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 […]

Read More

[Paper]: Hydrothermal fractionation of grape seeds in subcritical water to produce oil extract, sugars and lignin

The fractionation of grape seeds as a model biomass was studied using a combination of two processes: solvothermal extraction using ethanol and hydrothermal fractionation-autohydrolysis process in a semicontinuous reactor using subcritial water. Around 70% of the polyphenols were extracted in the first step and close to 80% of the sugars in the second step.

Read More

Adsorption/desorption characteristics and purification of polyphenols from grapes using macroporous resins

Grape fruit contains various nutrient elements, such as vitamins, minerals, carbohydrates, edible fibers and phytochemicals. Polyphenols are the most important phytochemicals in grape because they possess many biological activities and health-promoting benefits. The phenolic compounds mainly include anthocyanins, flavanols, flavonols, stilbenes (resveratrol) and phenolic acids. Anthocyanins are pigments, and mainly exist in grape skins. Flavonoids […]

Read More

Development of a novel process for the selective recovery of polyphenolic compounds from winemaking residues for the treatment and prevention of metabolic syndrome

Metabolic syndrome (MS) is one of the most prevalent diseases in the world; around the 24% of the adult population suffer it. The MS is a cluster of dysmetabolic features that can originate issues like central obesity, hyperglycemia, hypertension, hypercholesterolemia and/or diabetes Mellitus (also known as type II). The causes of the MS are unknown […]

Read More