Degradation of bacterial lipopolysaccharides by digestive-gland extracts of marine bivalve molluscs

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Abstract

  • 1.

    1. Crude digestive gland extract (DGE) of 5 species of marine bivalve mollusc had glycosidase activity against lipopolysaccharides (LPS) of gram-negative bacteria.

  • 2.

    2. Most of these extracts, after ammonium sulphate precipitation, had higher glycosidase activity than commercial Helix pomatia gut juice.

  • 3.

    3. Inorganic phosphate was also released from LPS by the various DGE but the lipid moiety of LPS appeared to be resistant to attack except by a DGE from Cerastoderma edule, which released small quantities of only non-hydroxylated fatty acids.

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