Relationship Between the B-Ring Hydroxylation Pattern of Condensed Tannins and their Protein-Precipitating Capacity
作者:
Haruo Kawamoto,
Fumiaki Nakatsubo,
Koji Murakami,
期刊:
Journal of Wood Chemistry and Technology
(Taylor Available online 1990)
卷期:
Volume 10,
issue 3
页码: 401-409
ISSN:0277-3813
年代: 1990
DOI:10.1080/02773819008050248
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A series of condensed tannin derivatives with non-, mono-, di- and tri-hydroxylated B-rings were synthesized starting from phloroglucinol and benzaldehyde derivatives. The protein-precipitating capacity of these condensed tannin derivatives showed 1) A condensed tannin with only a 4′-hydroxylated B-ring has almost the same protein-precipitating capacity as that of a condensed tannin with 3′,4′-dihydroxylated or 3′,4′,5′-trihydroxylated B-rings. 2) The complexing ability of phenolic hydroxyl groups in the B-ring are effective in the order ofp- >m- >o-positions.
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