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. 1974 Feb;27(2):346–350. doi: 10.1128/am.27.2.346-350.1974

Polygalacturonate Lyase Production by Bacillus subtilis and Flavobacterium pectinovorum

Owen P Ward 1, William M Fogarty 1
PMCID: PMC380033  PMID: 4207278

Abstract

Nutritional factors relating to the production of polygalacturonate lyases by strains of Bacillus subtilis and Flavobacterium pectinovorum were examined. Studies were carried out in shake flask cultures. In the case of B. subtilis the enzyme was produced constitutively, whereas in the case of F. pectinovorum it was only produced in quantity in the presence of pectic substances. Glucose was the most suitable carbon source for production of the polygalacturonate lyase of B. subtilis; of the nitrogen sources examined, the highest activities per milliliter of supernatant and per milligram of cells were obtained with glutamine and ammonium sulfate, respectively. The pattern of enzyme production and growth was similar although enzyme production ceased at pH 5.3. Sodium polypectate was the best inducer of polygalacturonate lyase with F. pectinovorum. Highest activity per milliliter of cell-free supernatant was obtained with skin milk powder as nitrogen source, although ammonium sulfate gave highest enzyme production per unit of biomass. Growth of F. pectinovorum occurred between pH 5.7 and 7.2. Enzyme production occurred during active growth and was independent of the pH of the medium.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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