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Ultrasound-assisted analytical emulsification-extraction
TrAC Trends in Analytical Chemistry, 2013The usefulness of ultrasound (US) for improving steps in analytical chemistry has been widely demonstrated in the past decade. One of the recent applications of US is to facilitate formation of emulsion for dramatic enhancement of the contact between surfaces of two immiscible phases. The effect is to enhance mass transfer between phases (liquid-liquid
M.M. Delgado-Povedano +1 more
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Ultrasound-assisted extraction and in situ derivatization
Journal of Chromatography A, 2013Ultrasound (US) is a type of energy of growing interest for analytical chemists. The favorable effect of US on mass transfer between two phases in the same or different state has been widely demonstrated as did the number of chemical reactions accelerated/improved under ultrasonic influence.
M M, Delgado-Povedano +1 more
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Ultrasound-assisted extraction of organic contaminants
TrAC Trends in Analytical Chemistry, 2019Abstract Ultrasound-assisted extraction is an efficient environmental friendly technique, since the solvent volume required in sample preparation is reduced and the extraction time is shortened in comparison to classical extraction procedures. Ultrasound radiation has been primarily applied to the extraction of analytes from solid samples.
Beatriz Albero +2 more
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CHAPTER 3. Ultrasound‐assisted Extraction
2013Ultrasound has been increasingly used in the food domain in processing, preservation and extraction processes. The effects of ultrasound arises from the cavitation phenomena caused by the irradiation of ultrasonic waves through the medium. The advantages of ultrasound are extensive, overcoming the shortcomings of conventional techniques on solvent and ...
Daniella Pingret +2 more
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Antimicrobial activity of ultrasound-assisted solvent-extracted spices
Letters in Applied Microbiology, 2004The objective of this research was to determine the antimicrobial activity of conventional and high-intensity ultrasound-assisted (HI-US) solvent-extracted Thai spices, including ginger (Zingiber officinale Rose), fingerroot (Bosenbergia pandurata Holtt) and turmeric (Curouma longa Linn).Extracts were obtained using hexane, isopropanol and a 7 : 3 ...
C, Thongson +3 more
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Ultrasound-Assisted Extraction of Stilbenoids from Grape Stems
Journal of Agricultural and Food Chemistry, 2013A new method for fast determination of stilbenoids from grape stems was developed. Ultrasound-assisted extraction was applied prior to chromatographic determination of stilbenoids in the extracts, and the stability of stilbenoids under extraction conditions was checked.
Z, Piñeiro +4 more
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Ultrasound-assisted extraction of pectin from sisal waste
Carbohydrate Polymers, 2015In this study, an efficient ultrasound-assisted extraction (UAE) of pectin from sisal waste was investigated and optimized. Response surface methodology (RSM) based on a three-level four-factor Box-Behnken response surface design (BBD) was employed to optimize the extraction conditions (ultrasonic power, extraction temperature, extraction time and ...
J Prakash, Maran, B, Priya
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MICROWAVE AND ULTRASOUND ASSISTED EXTRACTION OF SOYBEAN OIL
Transactions of the ASAE, 2004The effect of ultrasound and microwave assistance in enhancing extraction oil yields from soybeans when different solvents are used for extraction was investigated in two separate experiments. Each study involved a three-factor factorial following a completely randomized design that was replicated three times.
null Haizhou Li +3 more
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Ultrasound-assisted extraction of polysaccharides from mulberry leaves
Food Chemistry, 2011Ultrasound-assisted extraction (UAE) of polysaccharides from mulberry leaves was studied. The effects of four factors on the yield of polysaccharides were investigated. The results showed that optimum conditions were extraction power of 60W, extraction temperature of 60°C, extraction time of 20min and ratio of water to raw material of 15:1 (ml/g).
Zhi, Ying, Xiaoxiang, Han, Jianrong, Li
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Ultrasound assisted extraction of polysaccharides from hazelnut skin
Food Science and Technology International, 2015In this study ultrasound assisted extraction (UAE) of polysaccharides from hazelnut skin has been studied. Optimum sonication time has been evaluated depending on responses such as amount of carbohydrate and dried sample and thermogravimetric analysis.
Yilmaz, Tuncay, Tavman, Sebnem
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