E3S Web Conf.
Volume 164, 2020Topical Problems of Green Architecture, Civil and Environmental Engineering 2019 (TPACEE 2019)
|Number of page(s)||7|
|Section||Agriculture and Biotechnologies|
|Published online||05 May 2020|
Residual brewing yeasts as a source of beta-glucans
1 ITMO University, 191002, Lomonosova Street, 9, Saint-Petersburg, Russia
2 Saint-Petersburg State Institute of Technology, 190013, Moskovsky pr., 26, Saint-Petersburg, Russia
* Corresponding author: email@example.com
Residual brewing yeast is one of the main solid wastes in brewing. Using residual brewing biomass as a source of biologically active substances is an important way of recycling these brewing by-products. According to the literature S. cerevisiae is considered as the promising source of polysaccharides, particularly beta-glucans. Beta-glucans are structural polysaccharides of the yeast cell and perform immune stimulating properties. At the same time, there is too little information about the content of these polysaccharides in brewing yeast of the genus Brettanomyces. The objects of this study were yeast cultures of Saccharomyces cerevisiae and Brettanomyces bruxellensis. In this work, the cultivations of the yeasts were carried out to compare them as possible sources of beta-glucans. The yeasts were cultivated in a simple periodic culture using a laboratory fermenter (Biostat A, Sartorius). As a result, the content of beta-glucans in the yeasts S. cerevisiae and B. bruxellensis biomass was measured by enzymatic method (Megazyme, Ireland). According to the obtained data, the yeast B. bruxellensis contains a higher amount of beta-glucans than the yeast S. cerevisiae.
© The Authors, published by EDP Sciences 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.