Bioprocessing of Brewers’ Spent Grain Enhances Its Antioxidant Activity: Characterization of Phenolic Compounds and Bioactive Peptides

Show full item record



Permalink

http://hdl.handle.net/10138/320724

Citation

Verni , M , Pontonio , E , Krona , A , Jacob , S , Pinto , D , Verardo , V , Díaz-de-Cerio , E , Coda , R & Rizzello , C 2020 , ' Bioprocessing of Brewers’ Spent Grain Enhances Its Antioxidant Activity: Characterization of Phenolic Compounds and Bioactive Peptides ' , Frontiers in Microbiology , vol. 11 , 1831 . https://doi.org/10.3389/fmicb.2020.01831

Title: Bioprocessing of Brewers’ Spent Grain Enhances Its Antioxidant Activity: Characterization of Phenolic Compounds and Bioactive Peptides
Author: Verni, Michela; Pontonio, Erica; Krona, Annika; Jacob, Sera; Pinto, Daniela; Verardo, Vito; Díaz-de-Cerio, Elixabet; Coda, Rossana; Rizzello, Carlo
Other contributor: University of Helsinki, Department of Food and Nutrition



Date: 2020-07-31
Language: eng
Number of pages: 15
Belongs to series: Frontiers in Microbiology
ISSN: 1664-302X
DOI: https://doi.org/10.3389/fmicb.2020.01831
URI: http://hdl.handle.net/10138/320724
Abstract: Brewers' spent grain (BSG) is the major by-product of the brewing industry which remain largely unutilized despite its nutritional quality. In this study, the effects of fermentation on BSG antioxidant potential were analyzed. A biotechnological protocol including the use of xylanase followed by fermentation withLactiplantibacillus plantarum (Lactobacillus plantarum)PU1, PRO17, and H46 was used. Bioprocessed BSG exhibited enhanced antioxidant potential, characterized by high radical scavenging activity, long-term inhibition of linoleic acid oxidation and protective effect toward oxidative stress on human keratinocytes NCTC 2544. Immunolabelling and confocal laser microscopy showed that xylanase caused an extensive cell wall arabinoxylan disruption, contributing to the release of bound phenols molecules, thus available to further conversion through lactic acid bacteria metabolism. To clarify the role of fermentation on the antioxidant BSG potential, phenols were selectively extracted and characterized through HPLC-MS techniques. Novel antioxidant peptides were purified and identified in the most active bioprocessed BSG.
Subject: BIOAVAILABILITY
CHROMATOGRAPHY
EXPLOITATION
EXTRACTS
LACTIC-ACID BACTERIA
PROANTHOCYANIDINS
SELECTION
SOURDOUGH FERMENTATION
STARTERS
WHEAT BREAD
antioxidant activity
bioactive peptides
bioprocessing
brewers' spent grain
phenolic compounds
11832 Microbiology and virology
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
fmicb_11_01831.pdf 2.668Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record