カニおよび巻貝中の細菌による麻痺性貝毒の還元的変換〔英文〕

概要

論文の詳細を見る
Incubation of gonyautoxins with tissue extracts prepared from two species of crab, Atergatis floridus and Eriphia scabricuia, and from the turban shell, Turbo argyrostoma, confirmed trans-formation of gonyautoxins to saxitoxin through reductive elimination of C-11 hydroxysulfate and N-1 hydroxyl moieties. The reaction did not take place under bacteriostatic condition, indicating that bacteria rather than tissue enzymes were responsible for the reduction. The bacterial role was further confirmed by the fact that Pseudomonas sp. and Vibrio sp. isolated from the viscera of the above animals similarly converted gonyautoxins into saxitoxin. The bioconversion explained, at least partly, the discrepancy that saxitoxin and neosaxitoxin were predominant in the crabs and snails while their food alga, Jania sp., contained only gonyautoxin-I, -II, and -III. In-cubation with bacteria showed little effect on saxitoxin.
社団法人日本水産学会の論文