
显示样式: 排序: IF: - GO 导出
-
Polyphenols from Nerone Gold 26/6, a new pigmented rice, via non‐conventional extractions: antioxidant properties and biological validation J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-06 Pier Francesco Ferrari; Margherita Pettinato; Alessandro Alberto Casazza; Giulia De Negri Atanasio; Domenico Palombo; Patrizia Perego
Pigmented rice is rich in coloured molecules known as anthocyanins, which exhibit a strong antioxidant activity and are used as additives to improve both the aspect and nutraceutical value of food.
-
Anaerobic structured‐bed reactor for azo dye decolorization in the presence of sulfate ions J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-11 Thaíla de Mello Florêncio; Leandro AG de Godoi; Vinícius Carvalho Rocha; Jean Maikon Santos Oliveira; Fabrício Motteran; Sávia Gavazza; Karina Ferrazzoli Devienne Vicentine; Márcia Helena Rissato Zamariolli Damianovic
Textile wastewater is known for its polluting potential and toxicity. Biological, affordable treatments are especially desirable in developing countries to fulfill legal and ecological demands during its treatment.
-
Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-11 Yu Guo; Yu Xiao; Hongmei Wu; Jingwen Xu; Qiangqiang Chen
Pb(II)‐containing wastewater causes serious pollution in our daily life. Adsorption is the technique most often used to remove heavy metals from aqueous solution. For improving the removal efficiency of Pb(II) ions from aqueous solution, adsorbent materials and the functionalization method of the adsorbent need to be further studied.
-
The effect of different types of lactose monohydrate on the stability of acetylcholinesterase immobilized on carriers designed to detect nerve agents J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-23 Jiří Zeman; Sylvie Pavloková; David Vetchý; Vladimír Pitschmann
Maintaining the stability of an immobilized enzyme during storage is generally very problematic. However, various substances have been reported to have a positive effect on enzyme stability. These include reducing disaccharide lactose, which is used in carriers in the form of pellets with immobilized cholinesterase. These carriers serve as a filling for detection tubes (biosensor), which are used for
-
Production and toxicological evaluation of PBS‐urea microspheres targeting bioremediation J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-23 Priscilla Braga Antunes Bedor; Pedro Rondelli; Sergio Thode Filho; Fernando Gomes de Souza; Selma Gomes Ferreira Leite
As population and fuel demand increase, many events of oil spills in the environment have been recorded. In order to restore these environments, several techniques have been proposed in the literature, especially in the field of bioremediation, with their main advantage being the low impact on the environment. In this work, poly(butylene succinate) micro spheres containing urea were produced, representing
-
Fabrication of ternary CoO/g‐C3N4/Co3O4 nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-23 Wenqiang Zhang; Weilong Shi; Haoran Sun; Yuxing Shi; Hao Luo; Shirong Jing; Yingqiang Fan; Feng Guo; Changyu Lu
Photocatalytic water treatment by using semiconductor material with low‐cost, green and environmental features is the main candidate for the actual application of photocatalytic reaction.
-
Vapor‐liquid behavior of phenol and cumene in ternary and quaternary mixtures J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-23 Lisette M.J. Sprakel; Gerrald Bargeman; Lara Galan Sanchez; Boelo Schuur
Although phenol is a key intermediate in the plastics and polycarbonate industry, it is also a toxic component that requires removal from dilute aqueous streams, potentially by liquid‐liquid extraction (LLX). For LLX, cumene is suggested as solvent as it is already present in processes in the polycarbonate industry. For the recovery of cumene from phenol by distillation, knowledge on vapor‐liquid equilibrium
-
Essential Oils‐loaded Bio‐nanomaterials for Sustainable Agricultural Applications J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-23 Matías Menossi; Romina P. Ollier; Claudia A. Casalongué; Vera A. Alvarez
The excessive and indiscriminate use of synthetic agrochemicals and toxic fumigants has become essential to maximize the agricultural production worldwide. Despite their beneficial roles in the field and during storage, they produce environmental pollution, increasing pesticide/herbicide resistance and destruction of beneficial insects, and placing the health of producers and consumers at risk.
-
Prilezhaev Epoxidation of Oleic Acid in the Presence and Absence of Ultrasound Irradiation J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-23 Adriana Freites Aguilera; Roosa Hämäläinen; Kari Eränen; Pasi Tolvanen; Tapio Salmi
Epoxidation of double bonds in vegetable oils gives valuable green intermediates for chemical industry. The epoxidation of oleic acid with hydrogen peroxide according to the Prilezhaev principle was studied experimentally in a multiphase laboratory‐scale batch reactor operated isothermally at 50°C and atmospheric pressure. Solid cation exchanger (Amberlite IR‐120) was used as the solid catalyst to
-
Discernment of synergy during the co‐pyrolysis of lipid extracted microalgae and digested municipal solid waste: A TG‐MS study J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-23 Arun K. Vuppaladadiyam; Elsa Antunes; S. S. V Varsha; Farrukh Shehzad; S. Murugavelh; Muhammad Zaki Memon; Qingbin Song; Weiguo Dong; Hubao Duan
The current study investigated the co‐pyrolysis nature of biomasses, gas yields, kinetics and thermodynamics of Chroococcus sp. (CC), digested municipal solid waste (DMSW) and the mixtures using thermogravimetric analyzer and mass spectrometer.
-
Thermophilic waste air treatment of n‐alkanes in a two‐phase bubble column reactor: the effect of silicone oil addition J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-06 Jan Chalupa; Ondřej Novák; Martin Halecký; Jiří Bárta; Evguenii Kozliak
Thermophilic waste air biofiltration was developed to overcome the often observed drop in pollutant removal efficiency caused by classical reactor overheating above the mesophilic temperature range. To date, only a few studies have been reported on thermophilic biofiltration of airborne hydrophobic pollutants. In this work, a bubble column reactor (BCR) operated at 50 °C was used to treat waste air
-
Enhanced Separation of Chlorogenic and Gallic Acids Extracted from Spent Coffee Ground using a Three‐Zone Simulated Moving Bed Process with Partial‐Feed and Partial‐Collection Strategies J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-21 Preuk Tangpromphan; Khwanchanok Nakkong; Attasak Jaree
Spent coffee grounds, a valuable source of phenolic compounds, are considered beneficial for human health because of their antioxidative properties. The liquid extract containing phenolic compounds (such as chlorogenic and gallic acid, etc.) can be obtained via extraction using environmental‐friendly organic solvent. The separation of chlorogenic and gallic acids from the liquid extract was carried
-
Facile Preparation of Hierarchical Heterostructured TiO2/Bi/Bi2MoO6 Photocatalyst for Phocatalytic Degradation of Toluene Gas J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-20 Zhiguo Sun; Jiaming Fan; Run Feng; Menglu Wang; Yue Zhou; Li Zhang
In recent years, the emission of volatile organic compounds (VOCs) from different sources has caused huge environmental problems. As a ‘green' terminal treatment technology, photocatalytic technology is a competitive technology that has practical application prospects for the emission reduction of VOCs. The core problem of photocatalysis technology is to construct a photocatalyst with higher activity
-
Influence of electric field strength on the microbial degradation of petroleum hydrocarbons J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-17 Xuecheng Zheng; Jia Tang; Nanjun Lai
Microbial remediation of petroleum‐contaminated soil is a low‐cost technology that does not produce secondary pollution. However, the microbial degradation cycle is often time consuming and inefficient on account of the strong hydrophobicity of petroleum hydrocarbons.
-
Bioprocessing of marine crustacean side‐streams into bioactives: a review J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-04 Yang Zou; Johan Robbens; Marc Heyndrickx; Jane Debode; Katleen Raes
This review summarizes the most common biological methods and their conditions for the recovery of bioactive compounds such as chitin/chitosan, proteins/peptides and carotenoids from marine crustacean processing side‐streams (MCPS). Chitin can be efficiently extracted from MCPS by adding proteases to hydrolyze the proteins (enzymatic hydrolysis), or by using (non‐)lactic acid fermentation to digest
-
Deactivation and regeneration of Pt‐modified zeolite Beta–Bindzil extrudates in n‐hexane hydroisomerization J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-01 Zuzana Vajglová; Narendra Kumar; Markus Peurla; Leena Hupa; Kirill Semikin; Dmitry A Sladkovskiy; Dmitry Yu Murzin
The metal–acid bifunctional catalysts are widely used in many industrially significant chemical processes, including hydroisomerization of n‐hexane. Deactivation and regeneration of metal–acid bifunctional extrudates was investigated in continuous n‐hexane hydroisomerization in a fixed‐bed reactor. Four Pt/H‐Beta‐25 catalysts containing 30% Bindzil binder were prepared with the same composition and
-
Economic and ecological benefits of a leaky E. coli strain for downstream processing: a case study for staphylococcal protein A J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-04 Jens Kastenhofer; Alessandro L Cataldo; Julian Ebner; Viktor L Sedlmayr; Alois Jungbauer; Oliver Spadiut
Downstream processing of soluble recombinant proteins from Escherichia coli is complicated by the need to access the intracellular product by cell disruption and to separate the target protein from impurities, particularly host cell protein, DNA, endotoxins and lipids. We previously demonstrated the ability of the E. coli X‐press strain to leak high amounts of product to the culture medium without
-
Evaluating a preparation of malathion‐tolerant Aspergillus niger MRU01 for accelerated removal of four organophosphorus insecticides J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-20 Debasish Mohapatra; Sakti K Rath; Pradipta K Mohapatra
Microbial degradation of organophosphorus (OP) insecticides has emerged as an efficient and cost‐effective technology for removal of pesticide residues from soil. Malathion‐tolerant Aspergillus (Aspergillus niger MRU01) was developed, mass cultured, harvested, mixed with coir pith at 3% on dry weight basis, shade‐dried aseptically to a 5% moisture level and stored for 60 days. The growth, metabolic
-
Thiosulphate driven autotrophic denitrification via nitrite using synthetic wastewater J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-04 Evangelos Statiris; Evanthis Hadjimitsis; Constantinos Noutsopoulos; Simos Malamis
The removal of biological nitrite from wastewater can occur by both heterotrophic and autotrophic bacteria. Autotrophic denitritation can be implemented by using different sulphur forms (e.g., S2−, S0 or S₂O₃2−) as electron donors, and there is no need for organic carbon availability, as is required in heterotrophic denitrification. This work investigated an alternative biochemical pathway for nitrite
-
Cellulose from oil palm empty fruit bunch fiber and its conversion to carboxymethylcellulose J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-01 Benyathip Yimlamai; Wanna Choorit; Yusuf Chisti; Poonsuk Prasertsan
Higher‐value products, such as cellulose and carboxymethylcellulose (CMC), may be produced from lignocellulosic agroindustrial residues, such as oil palm empty fruit bunch (EFB) fibers that are presently underutilized or discarded. Recovery of cellulose from EFB and its conversion of CMC are discussed as methods of creating value and reducing the environmental impact of EFB.
-
Green synthesis of sulfur‐doped g‐C3N4 nanosheets for enhanced removal of oxytetracycline under visible‐light irradiation and reduction of its N‐nitrosodimethylamine formation potential J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-17 Yicheng Dou; Xingyu Shen; Jinte Zou; Runzhe Shi; Tingting Yan; Qiya Sun; Lin Wang
In this study, sulfur‐doped g‐C3N4 (SCN) nanosheets were synthesized using thiourea as a precursor, and then used to catalyze the degradation of oxytetracycline (OTC) under visible‐light irradiation. OTC was chosen as target contaminant because of it being an important precursor of N‐nitrosodimethylamine (NDMA).
-
Characterization of The Microbial Community in A Biotrickling Filter Treating A Complex Mixture of Gaseous Compounds Causing Odor Nuisance J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-14 Alberto Aguirre; Juan Carlos Gentina; Luc Malhautier; Jean Louis Fanlo; Alberto Vergara‐Fernandez; Felipe Scott; Germán Aroca
Industrial gaseous emissions causing odor nuisance have become a major environmental issue in many countries. Biotrickling filters are suitable for treating mixtures of gaseous compounds with high removal efficiencies. The aim of this work was to determine the vertical distribution of microbial communities stablished in a biotrickling filter treating a mixture of gaseous compounds causing odor nuisance
-
A comprehensive biotechnological and molecular insight into plastic degradation by microbial community J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-20 Anshu Priya; Kasturi Dutta; Achlesh Daverey
Environmental pollution by petrochemical plastic is a matter of serious global concern. Several microbes have the potential to degrade synthetic polymers with the aid of various genes, enzymes, and metabolic pathways. However, the biodegradation of petrochemical plastics by natural microbes is inherently slow. The slow rate of degradation stems from the high molecular weight, strong chemical bonding
-
A novel energy‐efficient extraction‐assisted distillation design for isopropanol–butanol–ethanol purification for use of gasoline additive J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-10 Yinggui Xu; Jinlong Li; Qing Ye; Yudong Li; Lijuan Chen; Haoxiang Zhang; Naigen Wang
Biobutanol is considered to be a promising alternative biofuel in terms of sustainability and environmental friendliness because of its desirable properties. High purity isopropanol–butanol–ethanol (IBE) mixture can be directly used as gasoline additive. However, the purification process of IBE is hindered because of its low concentration and high energy consumption. In order to reduce energy consumption
-
The effect of caffeine, metronidazole, and ibuprofen on continuous flow activated sludge process J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-10 Yerkanat N Kanafin; Yerbolat Kakimov; Assyl Adamov; Ardak Makhatova; Abilmansur Yeshmuratov; Stavros G Poulopoulos; Vassilis J Inglezakis; Elizabeth Arkhangelsky
The aim of this work was to study the biological treatment of a synthetic wastewater containing emerging contaminants. The 95‐day experiment was conducted in an 81 L continuous flow conventional activated sludge apparatus consisting of anoxic and aerobic reactors with internal recycling, and a clarifier with activated sludge recycling. Real activated sludge from the municipal wastewater treatment plant
-
Bioaugmentation with Ruminiclostridium thermocellum M3 to enhance thermophilic hydrogen production from agricultural solid waste J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-24 Tao Sheng; Qingbin Meng; Xuechen Wen; Caiyu Sun; Lisha Yang; Lixin Li
High‐efficiency saccharification technology is one of the bottlenecks of cellulosic bio‐hydrogen production. Cellulosic feedstocks saccharification currently performed by commercial cellulase, which is composed of different fungal cellulase. Compared with fungi, thermocellulosic bacteria represented by Ruminiclostridium thermocellum have a complete cellulase system, and a higher cellulase catalytic
-
A critical evaluation of the use of accumulated energy as a parameter for the scale‐up of solar photoreactors during the treatment of simulated industrial wastewater by solar photo‐Fenton J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-19 Alejandro Cabrera‐Reina; Sara Miralles‐Cuevas; Paula Soriano‐Molina; Jose A Sánchez‐Pérez
This work presents a critical evaluation of the use of accumulated energy (QUV) as a parameter for the scale‐up of solar photoreactors. The combined effect of initial pollutant load, iron concentration and UV radiation on industrial wastewater treatment by solar photo‐Fenton was investigated to identify photolimitation and photosaturation conditions.
-
Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-10 Jacques R Njimou; Martin Pengou; Hervé K Tchakoute; Mary Sieugaing Tamwa; Chedly Tizaoui; Ulrich Fannang; Patrick N Lemougna; Charles P Nanseu‐Njiki; Emmanuel Ngameni
Water contaminated by heavy metals has many negative impacts on human health and the environment. According to the UN's sustainable development goals, preserving natural resources will have positive impacts on living conditions by reducing diseases. In this study, a novel adsorbent synthesized from phosphate‐based geopolymer cement composite material was developed and evaluated for lead removal from
-
Recent developments on magnetic molecular imprinted polymers (MMIPs) for sensing, capturing, and monitoring pharmaceutical and agricultural pollutants J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-23 Gulgun Aylaz; Joel Kuhn; Elizabeth CHT Lau; Chi‐Chung Yeung; Vellaisamy AL Roy; Memed Duman; Humphrey HP Yiu
Among the many classes of pollutants, bioactive contaminants including pesticides, herbicides, and other pharmaceutical active compounds (PhACs) are causing significant concern. These chemicals have been linked directly to contamination of freshwater and food sources, threatening water and food security. Contamination from antibiotics, one class of PhACs, is also considered to link strongly to the
-
Antimycotic nail polish based on humic acid‐coated silver nanoparticles for onychomycosis J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-20 Ketheleen N M Dantas; Lucas R Andrade; Erika Lisboa; Victoria L Santana; André L S Santos; Thaís P Mello; Leandro S Sangenito; Álvaro S Lima; Alini T Fricks; Andreza F Begnami; Amanda Cano; Aleksandra Zielinska; Cleide M F Soares; Eliana B Souto; Patrícia Severino
The objective of this work was the development of silver nanoparticles (AgNPs) coated with humic acid (HA) and their incorporation into an enamel for antifungal activity. AgNPs were synthesized by chemical reduction using sodium borohydride as a reducing agent and coated with HA. Uncoated AgNPs were synthesized as control. AgNPs and HA‐AgNPs were characterized by ultraviolet–visible spectrophotometry
-
Foliar spray application of CuO nanoparticles (NPs) and S‐nitrosoglutathione enhances productivity, physiological and biochemical parameters of lettuce plants J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-20 Milena T Pelegrino; Joana C Pieretti; Camila Neves Lange; Marcio Yukihiro Kohatsu; Bruna Moreira Freire; Bruno Lemos Batista; Paola Fincheira; Gonzalo R Tortella; Olga Rubilar; Amedea B Seabra
Green‐tea‐synthesized copper oxide nanoparticles (CuO NPs) and S‐nitrosoglutathione (GSNO), a nitric oxide (NO) donor, were applied individually and in combination to lettuce leaves. We aimed to investigate whether a combined application of CuO NPs and GSNO might enhance plant growth when compared to individual treatments and the control group.
-
Recent advances in biotransformation of 5‐Hydroxymethylfurfural: challenges and future aspects J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-16 Kongkona Saikia; Abiram Karanam Rathankumar; Ponnusamy Senthil Kumar; Sunita Varjani; Mohideen Nizar; Rashmi Lenin; Jenet George; Vinoth Kumar Vaidyanathan
In a biorefinery process, 5‐Hydroxymethylfurfural (HMF) is a promising biomass‐derived chemical with diverse industrial applications. The biotransformation of HMF to different high‐valued furanic derivatives, such as 2,5‐furandicarboxylic acid, 2,5‐diformylfuran, 5‐hydroxymethyl‐2‐furancarboxylic acid, and 5‐formyl‐2‐furancarboxylic acid, has led to the transition from fossil‐derived products to bio‐based
-
Acid mine drainage treatment and sequential metal recovery by means of bioelectrochemical technology J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-16 Luis Fernando Leon‐Fernandez; Hassay Lizeth Medina‐Díaz; Omar González Pérez; Luis Rodríguez Romero; José Villaseñor; Francisco Jesús Fernández‐Morales
This work studied the treatment of and metal recovery from a synthetic acid mine drainage (AMD) containing 500 mg L−1 copper (Cu2+) and iron (Fe+3), and 50 mg L−1 nickel (Ni2+) and tin (Sn2+) by using a bioelectrochemical system (BES). The presence of electroactive bacteria improved the performance of such reactor configuration, by contrast with systems with abiotic anodes.
-
Techno‐economic analysis of the valorization of brewers spent grains: production of xylitol and xylo‐oligosaccharides J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-24 Lukas J Swart; Abdul M Petersen; Oscar KK Bedzo; Johann F Görgens
Brewers spent grains (BSG) represents ≤85% of a brewery's solid waste and common disposal to landfill is increasingly more difficult. Yet BSG is a food‐grade by‐product with potential economic valorization that can significantly improve resource efficiency and reduction in carbon emissions. This study investigated valorization of BSG through the application of novel high solids hydrothermal processing
-
Investigation of biomass production and harvesting of Isochrysis sp. using experimental design methodologies J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-20 Yu‐Ru Lee; I‐Li Chen; Jen‐Jeng Chen
Microalgal biodiesel is one of the best promising candidates as an alternative liquid fuel in response to the energy crisis. The timely development of cost‐effective and environmentally friendly culture systems for enhancing microalgae production on a commercial scale is extremely important. In this study, the effects of the process variables temperature, LED light source (blue, white, red), light
-
Immobilization of laccase from Bacillus subtilis DS on chitosan beads and standardization of process for biodegradation of textile dyes J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-01 Deepak Kumar; Aastha Khullar; Neha Sharma; Naveen Gupta
The textile industry generates a huge amount of effluents having different hazardous dyes. Indigo carmine and malachite green are most commonly used dyes in textile and dye industries. Pollution of these dyes affects aquatic life.
-
Contribution of Protein A step towards Cost of Goods for Continuous Production of mAb Therapeutics J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-01 Vikrant Bansode; Paridhi Gupta; Nikhil Kateja; Anurag S. Rathore
Monoclonal antibodies (mAbs) presently dominate the biotherapeutic market. However, biotherapeutics in general, and mAbs in particular are expensive therapies and outside the realm of affordability to most of the world. In an attempt to lower their cost of manufacturing, a novel in‐house non‐protein A continuous platform has recently been reported for mAb purification. In this paper, we perform an
-
Effects of membrane pore size and transmembrane pressure on ultrafiltration of red‐fleshed dragon fruit (Hylocereus polyrhizus) juice J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-17 Thanh TH Le; Linh TK Vu; Ngoc Lieu Le
Red‐fleshed dragon fruit contains high amounts of heat‐sensitive betacyanin pigments that require non‐thermal technologies in their processing. Ultrafiltration (UF) can be a promising alternative technique for fruit juice clarification and cold sterilization.
-
Improvement of natamycin production by controlling the morphology of Streptomyces gilvosporeus Z8 with microparticle talc in seed preculture J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-11 Chaoping Yue; Haitao Xu; Yingying Yu; Xin Yu; Min Yu; Chen Zhang; Qian You; Shaofan Xia; Zixian Ding; Hao Fu; Xin Zeng; Feng Li
Natamycin, an antifungal agent, has been widely used as a food preservative and medicine for fungal disease therapy. Seed preculture plays a crucial role in natamycin production, while studies on the effects of seed morphology on natamycin biosynthesis and corresponding regulation approaches are still absent.
-
CPO‐Fe3O4@mTiO2 nanocomposite with integrated magnetic separation and enzymatic and photocatalytic activities in efficient degradation of organic contaminants in wastewater J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-09 Xun Wang; Hanping Cheng; Fengqin Gao; Jing Wang; Quanguo Zhai; Mancheng Hu; Shuni Li; Yucheng Jiang
Immobilization of enzymes on a nanocarrier can improve their stability, but is often accompanied by a reduction of the initial catalytic activity. Meanwhile, inevitable mass loss during centrifugal separation inhibits reusability. It is still a challenge to design and prepare an immobilized enzyme with both improved catalytic activity and reusability simultaneously.
-
NiO‐MnO2/Nb2O5‐TiO2 catalyzed reaction integration of butanal self‐condensation and successive hydrogenation and its kinetics J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-17 Sibo Li; Jiaxun Zhang; Hualiang An; Guirong Wang; Xinqiang Zhao; Yanji Wang
The reaction integration of butanal self‐condensation and successive hydrogenation (that is, one‐step synthesis of 2‐ethylhexanol from butanal) is an efficiency way to simply process flow and reduce energy consumption for the commercial manufacture of 2‐ethylhexanol (2EHO). In the present work, a NiO‐MnO2/Nb2O5‐TiO2 catalyst was prepared for the integration reaction to reach a high 2‐ethylhexanol selectivity
-
Alternative acetone–water separation process through the application of aqueous two‐phase systems J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-11-25 José Omar García Gómez; Nancy Eloisa Rodríguez Olalde; Ana Alejandra Vargas Tah; Marco Rito‐Palomares; Fabricio Nápoles‐Rivera; Agustin Jaime Castro Montoya
The central stage of biotechnological production is the transformation of renewable raw materials into bioproducts in a water‐based bioreactor. The fermentation broth usually has a low concentration (less than 10%) of the bioproduct, which requires the application of subsequent separation and purification processes. For many bioproducts, separation is complicated by the presence of non‐ideal thermodynamics
-
Overcoming Challenges of Improving Legacy Biopharmaceutical Processes J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-31 Ying Gao; David Gervais
Continuous process improvement of biopharmaceutical processes is an expectation of the current regulatory environment (e.g., ICH Q8 and Q10), and extends to older products as well as new licenses. Particularly in the case of older products, process changes are also often simply required to improve process efficiency, to facilitate easier manufacture and to update materials such as chromatography resins
-
Retraction: The fabrication of magnetic recyclable nitrogen‐doped titanium dioxide/calcium ferrite/diatomite heterojunction nanocomposite for improved visible‐light‐driven degradation of tetracycline J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-02-01
Chen Y, Wu Q, Wang J, Song Y, The fabrication of magnetic recyclable nitrogen‐doped titanium dioxide/calcium ferrite/diatomite heterojunction nanocomposite for improved visible‐light‐driven degradation of tetracycline. J Chem Technol Biotechnol 2019, 94, 2702–2712 (https://doi.org/10.1002/jctb.6082).
-
Fe doped CeO2 nanocubes with the exposure of active (100) facets for photocatalytic ozonation of 4‐chlorophenol under solar irradiation J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-11 Shiting Xu; Xixi Chen; Shujuan Zhan; Shuanghong Tian; Ya Xiong
To strengthen the treatment efficiency of photocatalytic ozonation, it is necessary to develop a stable bifunctional catalyst active in both processes of photocatalysis and catalytic ozonation.
-
Advanced purification platform using circularly permuted caspase‐2 for affinity fusion‐tag removal to produce native fibroblast growth factor 2 J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-11 Nico Lingg; Monika Cserjan‐Puschmann; Andreas Fischer; Petra Engele; Christina Kröß; Rainer Schneider; Cécile Brocard; Matthias Berkemeyer; Gerald Striedner; Alois Jungbauer
Recombinant proteins produced for use as biopharmaceuticals need to harbor their native N‐terminus. A drawback in expression of recombinant proteins as fusion proteins with an affinity fusion‐tag is that enzymatic or chemical processing is required to trim the artificial tag and release the true protein of interest. In many cases, however, this processing step generates an incorrect N‐terminus.
-
Enhancement of chromate bioaccumulation by engineered Escherichia coli cells co‐expressing chromate reductase (YieF) and a rice metallothionein isoform (OsMT1) J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-07 Azar Shahpiri; Zahra Majnoun; Akram Kazemi‐Nasab; Mohsen Zarei
Hexavalent chromium Cr(VI) is a toxic and carcinogenic heavy metal. It is highly water soluble and one of the most widely used metals in industry, resulting in soil and water contamination. Nowadays engineering microbes provide new strategies for remediation of heavy metals.
-
Continuous culture of Nitrosomonas eutropha and biomethanol production using whole cell biotransformation J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-08 Tushar Sabale; Mohan Babu; Shruti Panchwagh; Anand Ghosalkar
Nitrosomonas eutropha is a chemolithoautotrophic organism with an ability to oxidize ammonium to nitrite and nitrate. Continuous culture with and without cell recycling was used to enhance production of N. eutropha cell biomass using a 40‐L bioreactor. Whole cell biotransformation was used to convert methane (CH4) present in the biogas into biomethanol using N. eutropha.
-
Particle size distribution as a major characteristic of domestic wastewater: implications for the modeling and design of membrane bioreactors J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-10 Serdar Doğruel; Derin Orhon
This study reviews the evolution of the concept and the methodology of particle size distribution (PSD) analysis for sewage. Evaluation of experimental data indicated that the analytical approach started with an empirical identification of soluble, colloidal and supra‐colloidal organic matter. Then, it evolved into a sequential filtration and ultrafiltration methodology, yielding results useful enough
-
Novel ceric dioxide nanospheres as sulfur hosts for advanced electrochemical performance of lithium‐sulfur batteries J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-10 Dawei Zhou
Metal oxides are promising sulfur host materials because of their superior adsorption ability. Based on this theme, ceric dioxide (CeO2) nanospheres with mesoporous structure were synthesized and designed as host materials to form CeO2 nanospheres/sulfur (CO‐NSs/S) composites.
-
Enhancement of Enzymatic Hydrolysis of Lignocellulose by Tetrabutylammonium Hydroxide (TBAOH) and Tetramethylammonium Hydroxide (TMAOH) Aqueous Solution Pretreatment J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-09 Qiao‐Zhi Zhang; Ran Ding; Jian‐Fei Sun; Xin Li; Wen‐Ting Luo; Jian‐Zhong Yin
Lignocellulose is usually pretreated as a raw material, and then it undergoes hydrolysis, fermentation, and other processes to produce biofuels, which is conducive to improving the utilization of agricultural and forestry wastes. However, most pretreatments, such as acid–base, CO2 explosion, and microbial degradation, could enhance the yield of enzymatically hydrolyzed (EH) sugars, but the conditions
-
Sorption behavior of tungsten and molybdenum on TVEX‐TOPO resin from nitric acid solution J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-07 Botros A Masry; Jacqueline A Daoud
TVEX‐TOPO, which is a commercial low‐cost macroporous copolymer resin containing 50% (w% Extractant fraction of total adsorbent mass) trioctylphosphine oxide (TOPO) was used for solid–liquid extraction of tungsten(VI) (W(VI)) and molybdenum(VI) (Mo(VI)) from nitric acid solution. The different parameters affecting the sorption process of both metal ions such as contact time, [HNO3], initial concentrations
-
Optimization of biogas production through anaerobic digestion of municipal solid waste: a case study in the capital area of Reykjavik, Iceland J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-20 Tamara Llano; Carlos Arce; David C Finger
Biogas is a valuable carbon‐free renewable energy source that can be produced from anaerobic digestion of organic waste. Accordingly, biogas production is promoted worldwide in efforts to reduce carbon emissions and optimize the recovery of resources from waste streams. In this paper the biogas production from bioresidues collected in the capital area of Reykjavik was modelled in Aspen Plus v10.
-
Impact of failure rates, lot definitions and scheduling of upstream processes on the productivity of continuous integrated bioprocesses J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-21 Peter Satzer; Daniel Komuczki; Magdalena Pappenreiter; Alessandro Luigi Cataldo; Bernhard Sissolak; Alois Jungbauer
The failure rates and the scheduling of bioprocesses have a substantial impact on process performance and economics but are often overlooked and neglected. Integrated continuous biomanufacturing is more flexible in respect to scheduling and the impact of failures can be reduced by appropriate scheduling and lot definitions.
-
Retraction: Self‐floating Cu/N co‐doped TiO2/diatomite granule composite with enhanced visible‐light‐responsive photoactivity and reusability J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2021-01-15
Chen Y, Wu Q, Wang J, Song Y, Self‐floating Cu/N co‐doped TiO2/diatomite granule composite with enhanced visible‐light‐responsive photoactivity and reusability. J Chem Technol Biotechnol 2019, 94, 1210–1219 (https://doi.org/10.1002/jctb.5871). The above article, published online on 13 November 2018 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the authors
-
Fabrication of recoverable magnetic composite material based on graphene oxide for fast removal of lead and cadmium ions from aqueous solution J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-20 Li Hou; Guangjiong Qin; Yaqing Qu; Chunlei Yang; Xiongfei Rao; Yun Gao; Xiaolan Zhu
In this study, a novel magnetic material was applied as an adsorbent for simultaneous removal of Pb(II) and Cd(II) ions from aqueous solutions. The adsorbent was synthesized using functionalized MnFe2O4 magnetic nanoparticles grafted to lamellar graphene oxide surface (MnFe2O4@SiO2‐NH2@GO) and characterized using X‐ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy
-
Photocatalytic and electrocatalytic CO2 conversion: from fundamental principles to design of catalysts J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-17 Zhuo Sun; Jiayu Dong; Chunguang Chen; Shuping Zhang; Yuanzheng Zhu
Carbon dioxide (CO2) is regarded as a major contributor to global warming and the climate crisis. To mitigate its negative impacts, a potential strategy is adopted, namely converting CO2 into renewable fuels or valuable chemicals. Because of the sluggish thermodynamic and kinetic processes, catalysts (photocatalysts or electrocatalysts) are essential during CO2 reduction. In this review, fundamental
-
Kinetic and thermodynamic characterization of lipase from Aspergillus melleus and its biocatalytic performance for degradation of poly(ɛ‐caprolactone) J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-17 Misbah Amin; Haq N Bhatti; Muhammad Bilal
Lipases are an interesting class of enzymes that can be used as biocatalysts for poly(ɛ‐caprolactone) degradation. This work reports on the biochemical characterization of a lipase produced through solid‐state fermentation by Aspergillus melleus and its application to degrade poly(ɛ‐caprolactone).
-
Chitin from seafood waste: particle swarm optimization and neural network study for the improved chitinase production J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-21 Nisha Suryawanshi; J Satya Eswari
The current system in the processing of seafood leads to accumulation of many waste products, such as shells, tails, heads and bones. This seafood waste can be exploited for the extraction of chitin, with numerous applications in different fields. Seafood waste treatment can produce some valuable products. For the valorization of chitin, its degradation is an important step that can be achieved using
-
An improved method for simple and accurate colorimetric determination of l‐asparaginase enzyme activity using Nessler's reagent J. Chem. Technol. Biotechnol. (IF 2.75) Pub Date : 2020-12-17 Rodrigo G Simas; Eduardo Krebs Kleingesinds; Adalberto Pessoa Junior; Paul F Long
Colorimetric determination of l‐asparaginase enzyme activity most commonly uses Nessler's reagent, but often yields unreliable results due to precipitation of tetraiodomercurate salts. Interference caused by some commonly used inorganic and organic compounds of biochemical buffers, reagents and microbiology fermentation media was determined. The stabilising effects of tartrate and polyvinyl alcohol