Chitin is a large water-insoluble, linear aminocarbohydrate homopolymer composed of P^-linked N-acetyl-D-glu-cosamine units with a three-dimentional a-helix configuration (Fig. J). Intramolecular hydrogen bondings stabilize the a-helical configuration of the macromolecule. In nature, chitin polymers coalesce extracellularly by intermolecular hydrogen bonds to form crystalline microfibrils that may appear in various polymorphs (a, P, and y). The most abundant one in insects is the antiparallel arrangement of the a-chitin polymorph.
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Make money with honey How to be a Beekeeper. Beekeeping can be a fascinating hobby or you can turn it into a lucrative business. The choice is yours. You need to know some basics to help you get started. The equipment needed to be a beekeeper. Where can you find the equipment you need? The best location for the hives. You can't just put bees in any spot. What needs to be considered when picking the location for your bees?