Soybean (Glycine max) hull valorization through the extraction of polyphenols by green alternative methods
- Cabezudo, Ignacio
- Meini, María Rocío
- Di Ponte, Carla C.
- Melnichuk, Natasha
- Boschetti, Carlos Eugenio
- Romanini, Diana
DOIAbstract
Soybean is one of the greatest crops in the world, with about 348.7 million tons being produced in 2018. Soybean hull is a by-product produced during the processing of soybean to obtain flour and oil. Though not being actually exploited, it is a source of polyphenols with antioxidant activity. Here, the extraction of polyphenols from soybean hull was performed by means of an alkaline hydrolysis treatment, which was optimized by the response surface methodology. At the optimal region, a total phenolic content of 0.72 g gallic acid equivalents per 100 g of soybean hull was obtained with an antioxidant activity of 2.17 mmoles of Trolox equivalents. Polyphenols responsible for the antioxidant activities were identified by LC–MS, including pheno...
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