Abstract
When grown on a sucrose-containing medium, Candida utilis synthesizes and secretes two invertases: one of molecular size of 280 kDa (the S-form – Slow-migrating) and a new form of Mr of 62 kDa (the F-form – Fast-migrating). Prior to immobilization, purification of S- and F-forms of invertase increased the immobilization yield to 89–100%, in comparison with that of crude invertase preparation (52%). The immobilized purified S- and F-form of invertase remained partially active after 15 min at 100 °C; the F-form retained almost 30% of its maximum activity. The immobilized S-form or F-form of invertase almost completely inverted (95% hydrolysis) 60% (w/v) sucrose over 5 h continuous reaction at 80 °C. Moreover, at 90 °C the immobilized F-form hydrolysed 70% of 60% (w/v) sucrose over 5 h, while the capability of the immobilized S-form of inverting sucrose over 5 h reaction decreased from 80% to 45%.
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Belcarz, A., Ginalska, G. & Lobarzewski, J. Immobilized, thermostable S- and F-forms of the extracellular invertase from Candida utilis can hydrolyse sucrose up to 100 °C. Biotechnology Letters 24, 1993–1998 (2002). https://doi.org/10.1023/A:1021138101897
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DOI: https://doi.org/10.1023/A:1021138101897