نتایج جستجو برای: polyphenols extraction

تعداد نتایج: 175477  

Journal: :Journal of the Air & Waste Management Association 2010
Arhontoula Chatzilazarou Evangelos Katsoyannos Olga Gortzi Stavros Lalas Yiannis Paraskevopoulos Euthalia Dourtoglou John Tsaknis

Cloud point extraction (CPE), a promising and simple technique for the separation of organic compounds using surfactants (Genapol X-080 [oligoethylene glycol monoalkyl ether] and PEG 8000 [polyethylene glycol with molecular weight of 8000]), was used to recover polyphenols from wine sludge (wine production waste). The effect of various parameters such as surfactant concentration, temperature, a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

Journal: :Eng 2023

The objective of this study was to investigate the feasibility using Cloud Point Extraction (CPE) isolate natural antioxidants (polyphenols) from apricot cannery waste (ACW). Four different food-grade surfactants (Genapol X-080, PEG 8000, Tween 80, and Lecithin) were tested at varying concentrations evaluate effectiveness technique. It observed that low in one-step CPE resulted less than 65% po...

2014
Jun Peng Zihao Xia Ling Chen Minjing Shi Jinji Pu Jianrong Guo Zaifeng Fan

Small RNAs, including microRNAs (miRNAs) and small interfering RNAs (siRNAs), are important regulators of plant development and gene expression. The acquisition of high-quality small RNAs is the first step in the study of its expression and function analysis, yet the extraction method of small RNAs in recalcitrant plant tissues with various secondary metabolites is not well established, especia...

2015
Qiang Zhang

The effects of extraction solvents (hexane, ethyl-acetate, acetone, ethanol, methanol, and water) on the content of phytochemicals including total polyphenols, flavonoids and condensed tannins, as well as antioxidant activities of walnut green husk were investigated. The results showed that extraction solvents significantly affected phytochemicals content and antioxidant activities of walnut gr...

Journal: :Malaysian Journal of Fundamental and Applied Sciences 2020

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