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Preparation and characteristics of beta-glucan concentrate from brewer's yeast as the additive substance in foods

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Author(s): Mária Kováčová | Ladislav Dodok | Livia Žofajová | Ľubomír Mikuš

Journal: Potravinarstvo : Scientific Journal for Food Industry
ISSN 1338-0230

Volume: 7;
Issue: 1;
Start page: 7;
Date: 2013;
Original page

Keywords: Saccharomyces cerevisiae | brewer's yeast | β-glucan | antioxidative activity

ABSTRACT
The brewer¢s yeast was used for preparation of concentrate with content of β-glucan. Hot water extraction (100°C, 5 hours) and subsequently an alkaline extraction of sediment using 1 M NaOH at 90°C for 1 hour were used. β-glucan concentrate containing 59,15 % of β-glucan had good functional properties (water binding capacity 13,34 g water/1 g concentrate, fat binding capacity 6,86 g fat/1 g concentrate) and indicated biological action too.  At concentration of 2 mg/ml DMSO (dimethylsulfoxid) was viability of murine L1210 leukemic cells reduced to 76.15 %. When observing the antioxidant activity it was identified, that the lipid peroxidation in linoleic acid samples was decreased during the presence of β-glucan concentrate. These results and good sensory properties like a bright colour and the pleasant taste and smell indicate, that prepared β-glucan concentrate has a potential to be used to improve the health – beneficial substances in the foods.doi:10.5219/258

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