über Polyphenole im Brauprozeß
- 1 January 1978
- journal article
- abstracts
- Published by Springer Nature in Zeitschrift für Lebensmittel-Untersuchung und Forschung
- Vol. 166 (4) , 228-233
- https://doi.org/10.1007/bf01126549
Abstract
Analytical methods for the determination of polyphenols of malt, barley, hop, wort, and beer are described. Malt or barley tannins has hitherto not received as much study as hop tannin. Polyphenols or tannins are classified. Studies on non-biological hazes are discussed in relation to the haze problem in brewing. The leucoanthocyanins of malt differ from those of hops in ability to form hazes. Subfractionation of polyphenol concentrates on sephadex columns allows isolation of individual tannins. Neben analytischen Nachweis-und Bestimmungsverfahren werden insbesondere die phenolischen Substanzen des Hopfens, der Gerste und des Malzes beschrieben. Die Veränderungen der „Gerbstoffe” bei der Malz- und Würzebereitung werden hervorgehoben und schließlich wird auf die Bedeutung der Polyphenole bei der Entstehung chemisch-physikalischer Biertrübungen eingegangen.Keywords
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