Near infrared (NIR) spectroscopy is widely used for non-destructive prediction of fruit traits. Common traits such as dry matter (DM) and soluble solids contents (SSC) can be predicted with reliable accuracy. However, the main problem with NIR spectroscopy is that a model developed on one batch may not perform very well when tested on other batches. Reasons for that are the physical, chemical and environmental

Ripe fruit is susceptible to postharvest rotting induced by microbial pathogens. The development of fruit storage technologies requires a comprehensive understanding of the overall microbial community involved in fruit storage. In this study, we investigated the microbiota of bacteria and fungi on cherry surfaces under room-temperature storage condition (25 ℃) and low-temperature storage condition

As Satsuma mandarin is a multi-layered fruit, the optical properties of the different tissue layers influence the performance of spectroscopy-based quality detection models. Therefore, the variation in the bulk optical properties (BOP) of the inner (juice vesicles) and outer (flavedo) tissue layer of Satsuma mandarin was investigated for different harvest times, fruit sizes and cultivars. Satsuma mandarin

The increasing market demand for Ready-To-Eat fresh produce promotes the keen interest in developing a rapid, sensitive and reliable method for determining the shelf life of fresh-cut produce. In this study, we developed a non-destructive headspace detection approach using gold nanoparticles (AuNPs) coated fibers coupled with surface-enhanced Raman spectroscopy (SERS), to detect volatile biochemical

Nutrition-sensitive agriculture is a novel concept in the agri-food system, which considers the implementation of techniques able to guarantee the nutritional value of the produce, the sustainability of the production and, at the same time, to reduce the ecological impact of agricultural practices. These principles can be also introduced in the fresh-cut market with the aim of maintaining the produce

The short shelf-life of dragon fruit is one of the inhibiting factors for the export of Vietnamese dragon fruit to distant markets. This study aimed at finding an optimal controlled atmosphere (CA) storage condition for dragon fruit by studying the effect of CA storage on fruit quality and its volatile organic compounds profile. Dragon fruit were stored at 4 different CA conditions and at ambient air

The effect of sodium isoascorbate (SI) on the browning of fresh-cut mushrooms was investigated. Results indicated that fresh-cut mushrooms treated with 10 g L−1 SI exhibited increased firmness, decreased weight loss, a lower respiration rate, a lower degree of browning, and lower polyphenol oxidase and tyrosinase activity, over 12 d of storage, relative to untreated mushrooms. The exogenous SI treatment

Dry rot is an emerging postharvest disease of garlic (Allium sativum) attributed to Fusarium proliferatum, which has caused huge economic losses in the past few years. In this study, we aimed to detect the presence of F. proliferatum on garlic bulbs postharvest during prolonged storage, and to identify other fungal species associated with garlic dry rot. We also quantified the level of fumonisins in

Pome fruit stored under a controlled atmosphere (CA) often suffers hypoxia due to the mismatch of O2 level in the storage rooms and the fruit’s O2 consumption. Fruit response-based O2 sensing and control could be an efficient approach to reduce the hypoxia-related physiological disorders and therefore increase the shelf life of stored fruit. This research aims to validate and evaluate the application

Browning is the major issue affecting the quality and shelf-life of fresh-cut potatoes. In this paper, in order to study the influences of maturity on browning and its mechanism, potatoes were harvested at three different stages, and the browning degrees, related physiological and biochemical properties of potatoes were evaluated. The results showed that with the increased maturity, potatoes are more

Hexokinase (HXK) is a bifunctional enzyme and plays a critical role in plants growth and stress response. HXK is encoded by a multi-gene family in a wide range of plants. However, information of HXK family members in peach and their expression pattern under disease stress remains unclear. In the present study, 5 PpHXK genes in peach fruit, including PpHXK1-3 and PpHKL1-2, were identified and isolated

Although superficial scald (SS) is well characterized on apples, there is still few information regarding the influence that initial fruit’s maturity heterogeneity may have on the development of this disorder on pears. In this study we aimed to understand the effect of growing season and site, harvest maturity, and their interaction with postharvest treatments on superficial scald development. Pears

Fresh-cut celery is an economically important crop, susceptible to postharvest disorders such as browning at cut ends, which can compromise quality and affect freshness perception. The study herein represents the most comprehensive attempt to date to determine the factors that mediate celery postharvest disorders and uncover the physiological and biochemical mechanisms involved. Three main experiments

“Algarve Citrus” are non-climacteric Protected Geographical Indication (PGI) commodities. They are harvested with minimal levels of juice content (≥35 %), soluble solids content (SSC) (≥10 %) and maturation index (MI) (≥8), as required by the respective PGI normative reference. These internal quality attributes (IQA) are usually determined in small samples of fruit collected from the orchards close

Fresh walnut seeds are vulnerable to germination during room-temperature storage, which can be delayed or inhibited by gamma radiation. However, the inhibitory mechanism involves the expression of multiple genes and remains unclear. ‘Liaohe 2’ fresh walnut seeds were exposed to a wide-spectrum dose of 60Co gamma rays and then stored in sand under a suitable humidity at 25 ± 1 °C. Six transcriptome

Near-infrared spectroscopy and hyperspectral imaging technologies have been proved to be able to detect invisible bruised kiwifruit. Therefore, it is doubted that the optical properties of kiwifruit are affected by bruises. However, it is not clear how bruises influence the optical properties of kiwifruit and whether different bruises have same effect on optical properties. To answer these questions

Phenolic biosynthesis in carrots is increased when subjected to wounding and ultraviolet (UV) light stresses. In this study, the physiological role of reactive oxygen species (ROS), ethylene (ET), and jasmonic acid (JA) as signaling molecules to elicit this stress response was evaluated. ROS (O2− and hydrogen peroxide) were the first signaling molecules produced, then ET, followed by lipoxygenase (LOX)

Methyl jasmonate (MeJA) and WRKY transcription factors (TFs) are documented to exert vital defensive functions. Research concerning WRKY TFs together with MeJA-primed defense against Rhizopus stolonifer in peach fruit is still in its infancy. In the present study, the mode of MeJA on inducing resistance against soft rot caused by Rhizopus stolonifer in peaches during the postharvest storage and the

Tomato is the fourth most popular fresh-market fruit, whereas most commercial tomato cultivars are particularly susceptible to B. cinerea. Nonexpressor of pathogenesis-related gene 1 (NPR1) is a critical regulator in plant resistance against various pathogens. However, the underlying mechanism of how SlNPR1 influences the defense against B. cinerea in tomato fruit remains unclear. In this study, two

Rhodotorula mucilaginosa cultured in a medium amended with chitosan significantly enhances biological control efficacy against postharvest fungal diseases of strawberries. The molecular mechanisms underlying the enhanced disease resistance of strawberries, however, have not been explored. In this study, a transcriptomic and proteomic approach was used to analyze the induced resistance response in strawberry

Oleocellosis, a physiological disorder that affects the appearance quality of citrus fruit, is usually accompanied by the lignification of fruit flavedo. However, the mechanism of lignin accumulation in citrus flavedo in response to oleocellosis remains largely unknown. Here, the molecular mechanism of flavedo lignification caused by oleocellosis in citrus was dissected by metabolome, histochemistry

Alternaria rot caused by Alternaria alternata and A. arborescens is a major postharvest disease affecting blueberries in California. The effectiveness of natamycin, a newly registered biofungicide in the United States, was evaluated for its potential as a postharvest treatment to control Alternaria rot. The baseline sensitivities to natamycin in A. alternata and A. arborescens were established. The

The B-box transcription factor plays an important role in plant growth and development processes. However, information is lacking on the B-box genes in peach (Prunus persica L. Batsch). Many studies have been published on the B-box genes’ response to light, but far fewer on abiotic stress response, especially to low temperature. Here, we identified 22 members of the B-box gene family in peach, and

The effect of melatonin treatment on color, chlorophyll degradation and chloroplast structure in broccoli during storage was evaluated. One hundred μmmol L−1 melatonin markedly extended the shelf life of broccoli. Compared with control florets, melatonin treatment delayed the decline of chlorophyll content, and maintained more intact chloroplasts. Meanwhile, melatonin also suppressed the activities

Suberin biosynthesis involves a large number of genes, and many of them are induced by abscisic acid (ABA). However, the regulation of transcription factor (TF) in response to ABA on suberin biosynthetic genes in kiwifruit has been unexplored. In this study, two genes, AchnCYP86A1 and AchnFAR respectively encoding a fatty acid ω-hydroxylase and fatty acyl-CoA reductase involved in suberin monomer biosynthesis

Penicillium digitatum acidifies the extracellular environments of fruit during decay development, this pH fluctuation decreased the efficacy of biological approaches under commercial conditions. Here, we explored the interaction between P. digitatum and an antagonistic yeast Rhodosporidium paludigenum to investigate potential mechanism behind the battle. P. digitatum was found in acidified citrus fruit

The change in the color of the lime peel from green to yellow is the main postharvest-period problem that is unacceptable to consumers. The purpose of this research was to study the effect of electron-beam (E-beam) irradiation and shellac coating on chlorophyll degradation and qualities in lime fruit. Lime fruit cv. Paan were treated with E-beam irradiation at dosages of 0 (control), 0.5 and 1 kGy

The balance between oxidative stress and antioxidant defense system was investigated in roots of the cold-sensitive (cvs. BRS Rubissol and BRS Cuia) and cold-tolerant (cv. Beauregard) sweet potato stored at 6 or 13 °C for 60 d. We hypothesized that the absence of chilling injury symptoms on cv. Beauregard stored at 6 °C depends on the induction capacity of enzymatic and non-enzymatic antioxidant systems

Enzymatic browning greatly affects the quality of fresh-cut potatoes (Solanum tuberosum L.). The transcript level of a novel aspartic protease inhibitor gene, StASPI, was found significantly higher in browning-less potatoes than in browning-susceptible potatoes, and exogenous aspartic protease inhibitor Pepstatin A inhibited the browning of potato pulp. Therefore, we speculated that StASPI plays important

Benchtop and portable devices based on near infrared (NIR) spectroscopy are increasingly used to evaluate the quality parameters of fruits. This study aims to compare the analytical performance of a benchtop spectrometer (XDS) and a handheld ultra-compact spectrometer (MicroNIR) and to investigate calibration transfer between these devices for quality parameters of apples (soluble solids content, titratable

This study evaluated, at a meso-scale, the antifungal effect of 405 nm LED illumination against Botrytis cinerea and Rhizopus stolonifer on tomatoes, as well as its effect of on the physicochemical properties. Tomatoes were surface-inoculated with B. cinerea and R. stolonifer, and illuminated with 87 W/m2 for twelve days. Subsequently, the antifungal effect, defined as the difference in mold populations

Sunlight includes UVA (320–400 nm). Since it is irrelevant for driving photosynthesis, less recognition is given to its usefulness in indoor cultivation. We examined how the cultivation under different UVA levels (0, 10 and 40 μmol m−2 s−1) affects the lettuce postharvest quality by evaluating the temporal dynamics of several underlying aspects, including weight loss, chlorophyll fluorescence, protein

This study described the rapid determination of potential aflatoxigenic fungi contamination on peanut kernels based on headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) coupled to fluorescence spectroscopy. Data-level and feature-level fusion strategies were introduced to integrate HS-GC-IMS and fluorescence spectra, aiming at improving the performances of identification and prediction

Induced disease resistance of fruit by bio-based compounds is a promising strategy to control fruit decay. This research was aimed at studying the resistance of cherry tomato fruit to Botrytis cinerea induced by the yeast cell wall component from Saccharomyces cerevisiae and investigate a role of MAPKs in regulating the resistance response. The disease resistance of cherry tomato fruit was effectively

Enzymatic browning is the main quality issue of fresh-cut potato. In this study, a widely targeted metabolomics approach was performed to investigate the response of metabolites to pre-cutting short-term warming (SW, an anti-browning treatment) by keeping potatoes at 25 ℃ for 12 h and screen the endogenous anti-browning compounds. Metabolomics analysis suggested that in SW treated potato, 13 metabolites

A range of modelling techniques were used in the estimation of dry matter content of intact mango fruit from short wave near infrared spectra, collected using an interactance geometry, with models developed on a data set collected across three seasons (n = 10,243) and tested on that of a fourth season (n = 1,448). Model types included Artificial Neural Network (ANN), Gaussian Process Regression (GPR)

This work was designed to assess the effects of acidic electrolyzed water (AEW) on disease occurrence, disease-resistant enzymes activities, H2O2 content, as well as the ROS scavenging systems in longans during postharvest storage. The harvested ‘Fuyan’ longan fruit were immersed in AEW with ACC of 80 mg/L at pH 2.5 for 10 min, and then stored at 25 °C. Results suggested that AEW treatment suppressed

Lignification is an important inducement of quality deterioration of postharvest Flammulina velutipes. In this study, phenylpropanoid pathway and mitochondrial reactive oxygen species (ROS) metabolisms were taken as breakthrough points to investigate the lignification mechanism in harvested F. velutipes packaged in nanocomposite packaging material (Nano-PM). In comparison with polyethylene packaging

To obtain robust near-infrared (NIR) spectroscopy data calibration models, variable selection and model updating with recalibration approaches were used for predicting quality parameters in pear fruit. For variables selection, interval partial least-squares regression and covariate selection approaches were used and compared. Model updating with recalibration was performed by incorporating a few new

Loquat (Eriobotrya japonica L.) is an important fruit for the economy of some regions of Spain that is very susceptible to mechanical damage and physiological disorders. These problems depreciate its value and prevent it from being exported. Visible (VIS) and near infrared (NIR) hyperspectral imaging was used to discriminate between external and internal common defects of loquat cv. ‘Algerie’. Two

Penicillium expansum is a major postharvest fungal pathogen and is the causal agent of blue mold decay in apples. Epsilon-poly-l-lysine (ε-PL) is a naturally-occurring polypeptide that has strong antimicrobial activity. It is primarily used to suppress foodborne pathogens in bread, beverage, meat products, etc. The potential application of ε-PL in the management of fungal postharvest diseases of fruit

Apple gray mold caused by Botrytis cinerea can reduce postharvest shelf-life and quality of apple produce, and thus causes serious economic losses. In this study, we investigated the biocontrol efficacy of Meyerozyma guilliermondii Y-1 with and without its combination with melatonin (MLT) against B. cinerea in the postharvest apple fruit, and the underlying physiological and molecular mechanisms. Our

A study of the physicochemical, structural, nanomechanical properties at macro, micro and nanometric scales was carried out to determine which features have the greatest influence on the firmness of selected apple cultivars (Golden Delicious, Granny Smith, Gala and Red Delicious). Physicochemical assays, microscopy techniques, image analysis, nanoindentation and spectroscopy were used to characterize

The contamination of foodborne Escherichia coli in fresh-cut products has become a major problem of public health around the world, so that early and rapid detection of contamination is crucial. This study explored the potential of hyperspectral imaging (HSI) measurement of contamination on the surface of fresh-cut potato slices in visible-near infrared (Vis-NIR, 400-1000 nm) region. Four preprocessing

Nitric oxide (NO), a major signalling molecule with various physiological functions in plants, participates in many responses to abiotic disorders such as cold stress. Chilling injury (CI) is the most costly postharvest problem in zucchini fruit (Cucurbita pepo L.), since it diminishes market acceptability and shelf life. This study investigates the effect of NO treatment on zucchini fruit during postharvest

The alteration of safety-secured yeast is a crucial step before scale applications. Based on previous studies, Pichia pastoris showed great potential and value to improve its biocontrol ability. The original sequences of antimicrobial peptide Ac-AMP2 and MiAMP1 were optimized according to the preference of Pichia pastoris and ligated into pPICZαA plasmid which is emerged as a high-performance vector

In order to investigate the effect of water loss on the different physiological metabolism of zucchini fruit under cold stress after harvest, two cold rooms (4 ℃) with different relative humidities (RH: 74 ± 2 % and 98 ± 2 %) were used for cold storage. The result suggested that high relative humidity (HRH) storage slowed down the increase of weight loss, chilling injury index, malondialdehyde (MDA)

Bitter pit (BP) is a physiological disorder of calcium deficiency in apple fruit and has not been fully characterized. The Ca2+/H+ exchanger (CAX) is a kind of Ca2+ transport protein. In this study, we analysed mineral contents in different parts of fruit, the expression levels of genes related to Ca transport and the functional roles of MdCAXs. The results showed lower water-soluble Ca content and

Wound healing is an inherent property of harvested potato tubers. However natural healing process usually needs 2-4 weeks, which increased water loss and pathogen invasion. Therefore, it is necessary to develop a technology to accelerate wound healing processing. Stroby is a biogenic fungicide with induced resistance and it has not been reported whether it can improve the wound ability of potato tubers

Radio frequency (RF) heating has been considered as one of the most potential thermal treatment technologies to disinfest postharvest agricultural products. A three-dimensional model was established based on single particle approach using a finite element software, COMSOL, to analyze temperature distribution and product quality, and mortality of Conogethes punctiferalis in chestnuts during combined

Lenticel breakdown (LB) mainly occurs in susceptible ‘Gala’ and ‘Red Delicious’ apples following storage. Postharvest calcium treatment increased LB of both cultiavrs as well as the less susceptible ‘Orleans’ and ‘Granny Smith’. Calcium increased the number and size of damaged lenticels. Callose was deposited in the sub-lenticular cells and the cuticle of the damaged lenticels, as well as in non- damaged

Peaches from the Yangshan region, a China-protected geographical indication product (CGIIA), has high economic value because of excellent quality, and price is premium over ordinary peaches. However, authentication of the origin of peaches from this region is challenging because of adulteration in the market and the similar appearance of different cultivar. This research was aimed at developing an

Browning is an important factor affecting the quality of fresh-cut apples, and studying this factor is valuable. Previous research has found that apple browning is due to an enzymatic reaction caused by polyphenol oxidase (PPO), which results in the darkening of apples through the oxidation of polyphenols to quinones. We screened two Fuji apple types, “flushed-skin color pattern” (Type P) and “striped-skin