| abstract |
(57) [Summary] [Structure] When untreated chitin is hydrolyzed by chitinase (for example, chitinase produced by Vibrio arginorticus strain TK-24 (FERM P-12011)), boric acid and borax are added. , Sodium perborate, ammonium borate, etc. are added so as to have a borate ion concentration of 5 to 200 mM, The reaction is carried out under the conditions of pH 7.0 to 11.0 and temperature 20 to 40 ° C. [Effect] Penta-N-acetylchitopentaose can be selectively produced from untreated chitin. |