A Defense Mechanism against Pathogenic Bacteria in the Digestive Tracts of Silkworm Larvae - in Vitro Evidence of the Formation of Caffeoquinone, a True Antibacterial Substance, and Synergism of Amino Compounds(Organic Chemistry)

概要

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For the defense mechanism against pathogenic bacteria in the digestive tracts of silkworm larvae reared mulberry leaves, in vitro evidence of the formation of a true antibacterial substance was obtained. Caffeic acid (CA) derived from chlorogenic acid (ChA) was converted into caffeoquinone (CQ) by base-catalyzed oxidation in a buffer solution (pH 10.0). CQ was trapped as 6´-phenylsulfonylcaffeic acid (6´-sulfone) by the addition of benzenesulfinic acid (BSA). The synergistic effects of amino compounds on the antibacterial activity of CQ are discussed in detail, and the probable reactions of CA with amino and thiol compounds in the alkaline solution are proposed.
社団法人日本農芸化学会の論文
1987-02-23