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Solid–Liquid Extraction by Manothermosonication: Recapturing the Value of Pomegranate Peels and Nanocomplexation of Extracts with Pea Protein
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-10-26 , DOI: 10.1021/acssuschemeng.0c06316
Nihal Güzel 1, 2 , Ozan Kahraman 1 , Hao Feng 1
Affiliation  

Manothermosonication (MTS) is a treatment that combines ultrasonication with mild temperature and pressure. MTS extraction was evaluated for recapturing bioactive compounds of pomegranate peel waste. The influence of extraction time (0.5–3 min), temperature (25–50 °C), and pressure (100–500 kPa) on the yield of total phenolic content (TPC) and antioxidant activity (AOA) was assessed. Pea protein isolates (PPIs) and PPI-modified starch (PPI-S) were used to form nanocomplexes with the phenolic extract (PE). Lyophilized peels were extracted with an ethanol/water (30%, v/v) mixture, at a peel:solvent ratio of 1:50. MTS extraction reduced the extraction time by 40 times compared with conventional extraction (35 °C and 60 min) for achieving the same amount of 2,2-diphenyl-1-picrylhydrazyl (DPPH). The samples treated under 500 kPa for 3 min had the highest TPC (1007 μmol GA/g DW) and AOA (1.57 mmol TE/g DW). Nanocomplexes produced from PPI-PE and PPI-S-PE had similar encapsulation efficiency (∼73%). The mean diameters of freeze-dried PPI-PE complexes were 54.5 ± 19.7 nm, as determined by ImageJ, while that of PPI-PE in emulsion was 111.3 ± 6.4 nm measured by dynamic light scattering (DLS). MTS is shown to be a green and efficient alternative to improve the extraction of bioactive compounds from pomegranate peel waste.

中文翻译:

Manothermosonication的固液萃取:重新获得石榴皮的价值和豌豆蛋白与萃取物的纳米复合

Manothermosonication(MTS)是一种将超声处理与温和的温度和压力相结合的治疗方法。评估了MTS提取物对石榴皮废料中生物活性化合物的捕获能力。评估了萃取时间(0.5–3分钟),温度(25–50°C)和压力(100–500 kPa)对总酚含量(TPC)和抗氧化活性(AOA)的影响。豌豆蛋白分离物(PPI)和PPI改性淀粉(PPI-S)用于与酚提取物(PE)形成纳米复合物。冻干的果皮用乙醇/水(30%,v / v)混合物以果皮:溶剂的比例为1:50提取。与常规萃取(35°C和60分钟)相比,MTS萃取将萃取时间减少了40倍,从而获得了相同量的2,2-二苯基-1-吡啶并肼基(DPPH)。在500 kPa下处理3分钟的样品具有最高的TPC(1007μmolGA / g DW)和AOA(1.57 mmol TE / g DW)。由PPI-PE和PPI-S-PE生产的纳米复合物具有相似的包封效率(〜73%)。通过ImageJ测定,冻干的PPI-PE复合物的平均直径为54.5±19.7 nm,而通过动态光散射(DLS)测量,乳液中PPI-PE的平均直径为111.3±6.4 nm。MTS被证明是一种绿色有效的替代方法,可以改善石榴皮废料中生物活性化合物的提取。通过动态光散射(DLS)测量的4 nm。MTS被证明是一种绿色有效的替代方法,可以改善石榴皮废料中生物活性化合物的提取。通过动态光散射(DLS)测量的4 nm。MTS被证明是一种绿色有效的替代方法,可以改善石榴皮废料中生物活性化合物的提取。
更新日期:2020-11-09
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