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- Title
Glucosamine-mediated detoxification of p-benzoquinone and its removal by chitosan.
- Authors
Park, Sang Ho; Kwon, Oh Sung; Choi, Chang Won; Kim, Chang-Jin
- Abstract
p-Benzoquinone non-enzymatically reacted with d-glucosamine at physiological pH and moderate temperature. The reaction of p-benzoquinone with glucosamine was signaled by changes in the UV and visible spectra. The reactivity proceeded fastest at pH values above 7, with a sharp drop from pH 6.5 to 7.0, and the reaction was negligible in acidic conditions. The order of reactivity of amino sugars was d-mannosamine > d-glucosamine > d-galactosamine. From the reaction mixture, four conversion products were isolated and none was toxic to Escherichia coli even at 500–700 μg ml-1, while p-benzoquinone was cytotoxic to E. coli at 20 μg ml-1. Chitosan could react with p-benzoquinone efficiently and remove this toxicant in aqueous solution.
- Subjects
GLUCOSAMINE; HYDROGEN-ion concentration; ESCHERICHIA coli; SPECTRUM analysis; CARBOHYDRATES; ENTEROBACTERIACEAE
- Publication
Biotechnology Letters, 2000, Vol 22, Issue 1, p21
- ISSN
0141-5492
- Publication type
Article
- DOI
10.1023/A:1005648121726