Utilisation of spent brewer's yeast for yeast extract production by autolysis: The effect of temperature


Tanguler H., ERTEN H.

FOOD AND BIOPRODUCTS PROCESSING, vol.86, pp.317-321, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 86
  • Publication Date: 2008
  • Doi Number: 10.1016/j.fbp.2007.10.015
  • Journal Name: FOOD AND BIOPRODUCTS PROCESSING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.317-321
  • Keywords: Autolysis, Saccharomyces cerevisiae, Temperature, Spent brewer's yeast, Yeast extract, KLUYVEROMYCES-MARXIANUS, GROWTH
  • Çukurova University Affiliated: Yes

Abstract

In this study, autolysis was induced by incubating cell suspensions of spent brewer's yeast at elevated temperatures of 45, 50, 55 and 60 degrees C with a reaction time ranging from 8 to 72 h. Contents and yields of solid, a-amino nitrogen, protein and carbohydrate were determined. It can be said that optimum temperature and time for the production of yeast extract was 50 degrees C for 24 h on the basis of a-amino nitrogen and protein contents. Sensory analysis was also done by yeast extract powder and control and samples with the addition of 0.5 and 1.0% yeast extract had the highest overall acceptance. (C) 2007 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.