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Changes in sugar content and activities of invertase (EC 3.2.1.26) and sucrose synthase (EC 2.4.1.13) were measured throughout fruit development in tree tomato (Cyphomandra betacea (Cav.) Sendtn.). Fruit of C. betacea accumulated predominantly reducing sugars similar to Lycopersicon esculentum and in contrast to sucrose accumulation, which is characteristic of L. peruvianum. Soluble acid invertase,...
Three fractions with invertase activity (β-d-fructofuranoside fructohydrolase, EC 3.2.1.26) were isolated from mature Solanum tuberosum tubers: acid soluble invertase, invertase I and invertase II. The first two invertases were purified until electrophoretic homogeneity. They are made by two subunits with an apparent M r value of 35 000 and their optimal pH is 4.5. Invertase I was eluted...
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