Results 271 to 280 of about 62,631 (288)

Ultrasonic Assisted Cloud Point Extraction of Polyaromatic Hydrocarbons

Separation Science and Technology, 2007
Abstract Cloud point extraction (CPE) of three PAHs, anthracene, phenanthrene, and pyrene was performed in an ultrasonic environment with Tergitol TMN‐6 as extractant. During the process, surfactant micelle aggregates came out gradually and deposited to form a surfactant‐rich phase.
Bingjia Yao, Li Yang
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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
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Oil recovery from petroleum sludge through ultrasonic assisted solvent extraction

Journal of Environmental Science and Health, Part A, 2016
The effect of ultrasonic assisted extraction (UAE) process on oil recovery from refinery oily sludge was examined in this study. Two types of UAE treatment including UAE probe (UAEP) system and UAE bath (UAEB) system were investigated. Their oil recovery efficiencies were compared to that of mechanical shaking extraction (MSE). Three solvents including
Guangji, Hu, Jianbing, Li, Shuhui, Huang, Yubao, Li   +3 more
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Studies on Total Flavonoids Extraction from Perilla using Ultrasonic-Assisted Extraction

Advanced Materials Research, 2011
The extraction of total flavonoids from Perilla, using ultrasonic-assisted method, was investigated in this work. Various extraction conditions, such as ethanol concentraction (V/V), volume-weight ratio between the extraction solution and the weight of Perilla (V/W), the extraction time (t), pH, temperature (T), agent concentration (c) have been ...
Yuan Feng Wu, Jian Wei Mao, Shi Wang Liu, Huang Jun   +3 more
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Ultrasonic-Assisted Extraction of Gardenia Yellow from Fructus Gardeniae

Advanced Materials Research, 2011
Gardenia yellow was extracted from fructus Gardeniae using water as extracting solvent by means of ultrasonic-assisted extraction (UAE). The effects of ratio of water to raw material, exaction time and temperature were investigated by single factor and orthogonal experiments. The results showed that the optimal extraction parameters were the extraction
Xi Ping Wang, Sheng Xiong Dong, Feng Chen   +2 more
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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
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Ultrasonic-Assisted Extraction of Cannabidiolic Acid from Cannabis Biomass.

Journal of visualized experiments : JoVE, 2022
Industrial hemp (Cannabis spp.) has many compounds of interest with potential medical benefits. Of these compounds, cannabinoids have come to the center of attention, specifically acidic cannabinoids. The focus is turning toward acidic cannabinoids due to their lack of psychotropic activity.
Kenneth J, Olejar, Min, Hong, Sun-Yeop, Lee, Tae-Hyung, Kwon, Soo-Ung, Lee, Chad A, Kinney, Joon-Hee, Han, Sang-Hyuck, Park   +7 more
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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
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Ionic liquid-based ultrasonic-assisted extraction of piperine from white pepper

Analytica Chimica Acta, 2009
An ionic liquid-based ultrasonic-assisted extraction (ILUAE) method has been developed for the effective extraction of piperine from white pepper powder. A series of 1-alkyl-3-methylimidazolium ionic liquids differing in composition of alkyl chain and anion were evaluated for extraction efficiency.
Xiaoji, Cao, Xuemin, Ye, Yanbin, Lu, Yi, Yu, Weimin, Mo   +4 more
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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
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