Chitooligosaccharides의 마우스에 대한 급성 경구독성

Acute Oral Toxicity of Chitooligosaccharides in Mice

  • 박헌국 (동남보건대학 식품영양과)
  • 발행 : 2003.12.01

초록

Chitosan을 Bacillus pumilus BN-262 유래의 chitosanase로 처리하여 trimer, tetramer, pentamer가 전체 올리고당 중 64.3%에 달하는 비교적 저분자의 chitooligosaccharides로 구성된 LMW-chitooligosaccharides를 얻었으며, chitosan을 Trichodema viride 유래의 cellulase로 처리하여 중합도 7 이상의 것이 전체 올리고당 중 49.3%에 달하는 상대적으로 분자량이 큰 chitooligosaccharides로 구성된 HMW-chitooligosaccharides 를 얻었다. 제조된 Chitooligosaccharides의 마우스에 대한 급성경구독성을 조사하였다. Chitooligosaccharides는 마우스에 대하여 어떠한 독성 효과도 보이지 않았으며 반수치사량은 5g/kg 이상인 것으로 추정되었다.

Chitooligosaccharides were prepared by enzymatic hydrolyzing of crab shell chitosan. Low molecular weight chitooligosaccharides(LMW-chitooligosaccharides), 64.3% of which was composed of trimer, tetramer, and pentamer, was obtained by hydrolyzing chitosan with the chitosanase originated Bacillus pumilus BN-262. High molecular weight chitooligosaccharides(HMW-chitooligosaccharides), 49.3% of which was composed of chitooligosaccharides over heptamer, was obtained by hydrolyzing chitosan with the cellulase originated Trichoderma viride. Acute oral toxicity of chitooligosaccharides were tested in mice. Chitooligosaccharides did not have any toxic effect in mice and oral LD$\_$50/ value of chitooligosaccharides was over 5.0g/kg in mice.

키워드

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