Journal
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
Volume 65, Issue 2, Pages 480-483Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1271/bbb.65.480
Keywords
Actinidia deliciosa; actinidic acid; kiwi fruit; phytoalexin; 2 alpha,3 beta,23-trihydroxy-12,20(30)-ursadien-28-oic; acid
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Seven phytoalxins (1-7), including a new compound, were isolated from the peel of unripe kiwi fruit (Actinidia deliciosa cv. Golden King) that had been wounded and inoculated with Colletotrichum musae. The new phytoalexin (1) was identified as 2 alpha ,3 beta ,23-trihydroxy-12,20(30)-ursadien-28-oic acid, and named actinidic acid. Phytoalexins 2-6 are known triterpenes but have not previously been described as phytoalexins. Phytoalexin 7 is the same triterpene as the phytoalexin of nectarine fruit.
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