Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Studies on Hemicellulase System in Aspersillus niger - Bioconversion of Cellulosic Wastes for the Production of D-xylose -

Aspergillus niger의 Hemicellulase계 효소에 관한 연구 -생물전환공정에 의한 D-Xylose의 생산-

  • Moon Hi. Han (Biotechnology Research Division Korea Advanced Institute of Science and Technology) ;
  • Park, Yang-Do (Biotechnology Research Division Korea Advanced Institute of Science and Technology) ;
  • Park, Myung-Ok (Biotechnology Research Division Korea Advanced Institute of Science and Technology)
  • Published : 1983.09.01
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Abstract

Systematic bioconversion process for the production of xylose from agricultural wastes such as barley straw and corn cobs was studied. After the pretreatment in 1 % NaOH solution for 24 hours at 3$0^{\circ}C$, enzymatic hydrolysis of barley straw for 48 hours at 3$0^{\circ}C$ resulted in the liberation of 15.8% of reducing sugar which is equivalent to 87% of total D-xylose content. Among various agricultural wastes, corn cob as well as barley straw was demonstrated to be potent sources for the production of D-xylose by the process of enzymatic conversion.

보리짚이나 옥수수 속과 같은 농산폐자원으로부터 xylose를 생산하기 위한 생물전환공정에 관한 연구를 수행했다. 보리짚이나 1% 가성소다용액으로 24시간 3$0^{\circ}C$ 전처리한후 3$0^{\circ}C$에서 48시간 효소 가수분해를 시킨 결과 15.8%의 환원당을 유리시켰다. 이 환원당의 량은 보리 짚에 들어있는 전 D-xylose 함량에 87%에 해당하는 것이다. 여러 가지 농산폐자원의 효소전환공정을 시험한 결과, 보리짚과 옥수수속이 D-xylose 생산에 가장 적합한 원료가 픽수 있음을 관찰하였다.

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