Work

Bioactive Phenolic Compounds of Soybean (Glycine max cv. Merit): Modifications by Different Microbiological Fermentations

Year: 2012

Type: article

Abstract: In this work, the effect of solid-substrate fermentation with Aspergillus oryzae, Rhizopus oryzae and Bacillus subtilis of soybean seeds on bioactive phenolic compounds was studied.Among the analysed sample extracts several phenolic compounds, hydroxybenzoics, hydroxycinnamics and fl avonoids, such as fl avonols, fl avanones, isofl avones were identifi ed by HPLC-DAD-ESI/MS.The results obtained indicate that fermentation process carried out in seeds inoculated with different microorganisms produced signifi cant changes in fl avonoids and phenolic acids contents.A signifi cant increase in the content of phenolic acids was observed in the samples fermented with the different microorganisms with respect to soybean without fermentation and fermented naturally.Fermentation process produced also important changes in fl avonoids compounds, with a signifi cant formation in isofl avone aglycone contents such as daidzein, glycitein and genistein as a consequence of glucosidase activity of microorganism in this process, showing signifi cant differences (p<0.05) with respect to control.Therefore, this process was shown to be a good way to increase the phenolic content of soybean, which could confer health-promoting effects.

Source: Polish Journal of Food and Nutrition Sciences

DOI: 10.2478/v10222-012-0060-x

Authors: Montserrat Duenas, Teresa Hernandez, Sergio Robredo, Grzegorz Lamparski, Isabel Estrella, Rosario Munoz