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Removal of the Bittering Substances from Brewer's yeast by Supercritical Carton Dioxide  

전병수 (부경대학교 식품생명공학부)
윤성옥 (부경대학교 식품생명공학부)
김석규 (일신엔지니어링)
최승태 (창원대학교 유전공학연구소)
Publication Information
KSBB Journal / v.17, no.1, 2002 , pp. 68-72 More about this Journal
Abstract
Supercritical Carbon Dioxide was evaluated and optimized for the enrichment and fractionation of the essential oil and the bitter principles of hops, both of which contribute to the flavor of beer, Selected conditions of extraction(pressure, temperature and co-solvent) influenced the composition, the olfactory results and the colour of the extract. Optimal extraction conditions were 30 min, 1800 psia and $ >45^{\circ}C $ with co-solvent. Under these conditions, yield was 65% from brewer's yeast. The bittering substances from brewer's yeasts almost were removed.
Keywords
Supercritical Carbon Dioxide; Essential oil; brewer′s yeast; Humulones;
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