직/편성물 가공

Structural Aspects of Alpha and Beta Chitin Crystals.

  • 출판일1998.10
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 345
In the crystals of beta chitin, the chains are packed in a parallel mode. There is some controversy, however, about the packing (parallel or antiparallel) of crystals in alpha chitin. To address this problem, researchers conducted a structural study of alpha chitin from the grasping pines of Sagitta. Results indicate that the large chitin crystals found in these specimens were crystallized in the P2(1)2(1)2(1) space group and corresponded to an antiparallel arrangement. Researchers also investigated the solid state conversion of beta chitin to alpha chitin by using highly crystalline beta chitin microfibrils from the tubes of hydrothermal vent worms, such as those of Tevnia jerichonana. The conversion could be accounted for by a shish-kebab type mechanism where the antiparallel alpha chitin crystal recrystallized progressively on the underlying parallel beta chitin crystals. Abstract.
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