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-Fructofuranosidases from roots of dandelion (Taraxacum officinale Weber).


ABSTRACT: 1. Three beta-fructofuranosidases were separated by chromatography on a DEAE-cellulose column from the soluble protein extracted from dandelion (Taraxacum officinale Weber) roots. 2. One enzyme, which acted on sucrose, was characterized as an invertase, with a K(m) of 2.00x10(-2)m and pH optimum of 7.5. 3. The other two enzymes are hydrolases (A and B), which act on the inulin series of oligosaccharides [general formula glucose-fructose-(fructose)(n)]. They both have a pH optimum of 4.0 and K(m) of 1.54x10(-2)m but differ in their chromatographic behaviour on DEAE-cellulose. Neither of the hydrolases is inhibited by sucrose. 4. The physiological role of these three hydrolytic enzymes is discussed.

SUBMITTER: Rutherford PP 

PROVIDER: S-EPMC1178413 | biostudies-other | 1972 Feb

REPOSITORIES: biostudies-other

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