Spent yeast is one of the main fermentation process by-products and several bioactive ingredients have been extracted from it, such as mannans and Î²-glucans. These extraction processes generate waste streams rich in protein, that can still be used to produce peptide-rich extracts. This work describes the use of a scalable and low-cost process to obtain yeast peptide extracts in a circular economy concept. Peptide fractions produced contained 48.3 to 86.4% of protein (w/w) and essential amino acids amounts higher than those defined by FAO and WHO references. Regarding their bioactive properties, extracts exhibited strong antihypertensive and antioxidant activities. Furthermore, an inhibition of 62.0-71.3% in HMG-CoA reductase was observed, a feature hereby described for the first time, thus stating the cholesterol-lowering capacity of yeast peptides. In conclusion, due to their combined nutritional and bioactive characteristics, the produced yeast peptide extracts are good candidates for dietary supplementation and functional foods....
Peptide-rich extracts from spent yeast waste streams as a source of bioactive compounds for the nutraceutical market.
C. Ferreira, Universidade Catolica Portuguesa, CBQF - Centro de Biotecnologia e Quimica Fina - Laboratorio Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal. E-mail firstname.lastname@example.org
Oliveira, A. S., Pereira, J. O., Ferreira, C., Faustino, M., Durao, J., Pintado, M. E., Carvalho, A. P.; Peptide-rich extracts from spent yeast waste streams as a source of bioactive compounds for the nutraceutical market.. IFIS Food and Health Sciences Database 2022; doi:
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