NEW RESEARCH ARTICLE: Microwave pretreatment to improve extraction efficiency and polyphenol extract richness. Effect on antioxidant bioactivity

Microwave assisted extraction advantages are widely recognised. However, its implementation at an industrial scale is restricted due to microwave limitations. In this work, a microwave pretreatment is proposed as an easy scale-up alternative. The double effect of this pretreatment on extraction yield and on product richness is assessed. Microwaves accelerate the extraction kinetics of most […]

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[Paper]: Microwave-assisted extraction of polyphenols from Clinacanthus nutans Lindau medicinal plant: Energy perspective and kinetics modelling

Microwave-assisted extraction (MAE) of polyphenols from medicinal plant, Clinacanthus nutans (C.nutans) was developed. Affecting parameters on the extraction yield of polyphenols such as ethanol concentration, solvent-to-feed ratio (S/F) and energy absorbed were studied. The variations in the effect of ethanol concentration and S/F were also explained in view of energy absorption. Polyphenols yield was found […]

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[Award]: Microwave Working Party 3rd award to “Yield vs selectivity in grape pomace polyphenol microwave extraction”

Our PhD student Ana Álvarez was awarded third place in the scholarship competition at the Third Global Congress on Microwave Energy Application, hold in Cartagena (Spain) in July 2016. This prize was sponsored by the Microwave Working Group. A guild dedicated to formulate the path for microwave technology over the next decade. One of its […]

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[Paper]: Production of water soluble quercetin formulations by pressurized ethyl acetate-in-water emulsion technique

Quercetin is a strong antioxidant flavonoid with several bioactive properties such as anti-inflammatory and anticarcinogenic activities, becoming an interesting compound to be incorporated into pharmaceutical, cosmetic or food products. However, these applications are limited by the low bioavailability of this flavonoid. Quercetin is poorly soluble in aqueous media, such as gastrointestinal fluids, being also degraded […]

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