Results 261 to 270 of about 48,793 (299)

Ultrasonication assisted lipid extraction from oleaginous microorganisms

Bioresource Technology, 2014
Various solvents, including water, hexane, methanol, and chloroform/methanol (1:1 v/v), were tested to identify the efficiency of lipid extraction from Trichosporon oleaginosus and an oleaginous fungal strain SKF-5 under ultrasonication (520 kHz 40 W and 50 Hz 2800 W) and compared with the conventional chloroform methanol (2:1 v/v) extraction method ...
Zhang, Xiaolei, Yan, Song, Tyagi, Rajeshwar Dayal, Drogui, Patrick, Surampalli, Rao Y.   +4 more
openaire   +3 more sources

Vesicle based ultrasonic-assisted extraction of saponins in Panax notoginseng

Food Chemistry, 2020
A simple and effective vesicle based ultrasonic-assisted extraction (UAE) method was developed for extraction of active compounds in functional food. The target analytes were determined by ultra-high performance liquid chromatography with ultraviolet detector. Surfactant vesicle was adopted as extraction solvent.
Qiu-Yan, Wang, Xin, Dong, Juan, Yang, Yu-Han, Hu, Li-Qing, Peng, Hui, Zheng, Jun, Cao   +6 more
openaire   +2 more sources

Ultrasonication-assisted extraction of resveratrol from grapes

Journal of Food Engineering, 2006
Abstract In order to search an effective extraction of resveratrol from grapes, superior to a conventional solvent extraction, an ultrasonication-assisted method was explored. When the new extraction of resveratrol was applied to fruit stem of Campbell and Gerbong grapes, the recovery yield was increased by 24–30%, compared to that by the ...
Yong-Jin Cho, Ji-Young Hong, Hyang Sook Chun, Sang Kook Lee, Hye-Young Min   +4 more
openaire   +1 more source

Extraction of SOD from Alfalfa with Ultrasonic Assisted

Advanced Materials Research, 2015
In this study, the new technological parameters have been optimized for running Single factor experiment and orthogonal design test. Furthermore, the optimal extractible condition of SOD activity from Alfalfa was determined by the assay of NBT photoreduction method.
Min Qu, Yu Jia Liu, Lin An Qin
openaire   +1 more source

Ultrasonic-assisted extraction of pectin from chaenomeles

Journal of Central South University, 2014
Ultrasound was applied for the extraction of pectin from chaenomeles. The content of pectin was evaluated by carbazole colorimetric method. Based on the results of the single factor experiment and the orthogonal tests, the optimum extraction parameters are as follows: the solid-to-liquid ratio is 1:4 g/mL, the ultrasonic power is 320 W, the ultrasonic ...
Xin-she Li, Zheng-yan Liu, Bu-shi Lu
openaire   +1 more source

Determination of tobramycin in soil by HPLC with ultrasonic-assisted extraction and solid-phase extraction

Journal of Chromatography B, 2011
Pharmaceuticals residues in the environment have become a growing scientific interest worldwide. In the light of the possible harmful effects of tobramycin, a rapid and sensitive analytical method for determination of tobramycin in soil was developed. The extraction and purification methods, derivatization conditions, and chromatographic conditions in ...
Shun, He, Qiyou, Chen, Yan, Sun, Yuncong, Zhu, Laixin, Luo, Jianqiang, Li, Yongsong, Cao   +6 more
openaire   +2 more sources

Efficiency of stilbene extraction- comparison of the conventional and ultrasonic assisted extraction

2008
Polyphenols are large family of natural antioxidants, bioactive compounds widely distributed in plants. They have been studied for several decades because of their potentially beneficial properties for human health. In recent times great interest is devoted to subclass of stilbenes, especially resveratrol and its derivatives. In this study, we analyzed
Skroza, Danijela, Ljubenkov, Ivica, Katalinić, Višnja, Generalić Mekinić, Ivana   +3 more
openaire   +2 more sources

Optimization of Ultrasonic-Assisted Extraction of Phenolic Compounds from Apples

Food Analytical Methods, 2015
In order to optimize conditions for the extraction of polyphenols from apples, peel and flesh of apples were subjected to an extraction process with different solvents consisting of various ratios of methanol and water (40%, 60%, 80%), 100% methanol or with methanol acidified with hydrochloric acid (0.1%). Extractions were performed using an ultrasonic
Lidija Jakobek, Martina Boc, Andrew R. Barron   +2 more
openaire   +1 more source

Optimization of ultrasonic-assisted extraction for herbicidal activity of chicory root extracts

Industrial Crops and Products, 2011
Abstract The present study evaluated the herbicidal potential of extracts from chicory (Cichorium intybus L.) roots on the germination of Echinochloa crusgalli L. Beauv and Amaranthus retroflexus L. Eight ultrasonic assisted-extraction (UAE) conditions were optimized, using an orthogonal matrix design.
Quanzhen Wang, Yuyan Liu, Jian Cui, Jinhong Du, Guo Chen, Haitao Liu   +5 more
openaire   +1 more source

Ultrasonic-assisted extraction of polyphenols and antioxidants from Picea abies bark

Journal of Biotechnology, 2020
Spruce bark represents a reservoir of bioactive compounds. The aim of this study was to investigate the effect of independent variables (temperature, liquid to solid ratio, time and methanol content) and their interaction within the extraction process by the response surface methodology (RSM).
Daniela, Chmelová, Dominika, Škulcová, Barbora, Legerská, Miroslav, Horník, Miroslav, Ondrejovič   +4 more
openaire   +2 more sources