Summary
Two strains of Kluyveromyces marxianus (A1 and A2) isolated from ‘aguamiel’ (agave sap) and one strain of K. lactis var. lactis (P7) isolated from ‘pulque’ (its fermented product), were studied to make a survey of inulinase production. The strains of K. marxianus A1 and A2 were the best producers of inulinase, giving up to 2.5 times more enzyme than the control hyperproducing strain K. marxianus CDBB-L-278, and showed lower catabolic repression than this. One strain isolated from pulque was identified as K. lactis var. lactis and was also an excellent inulinase producer, being the first strain of this species reported as such. These strains were very good inulinase producers and they had low susceptibility to catabolic repression probably because the source from which they were isolated was rich in sucrose and oligofructans. They can be used in the transformation of inulin to produce fructose and/or oligofructans.
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Cruz-Guerrero, A.E., Olvera, J.L., García-Garibay, M. et al. Inulinase-hyperproducing strains of Kluyveromyces sp. isolated from aguamiel (Agave sap) and pulque. World J Microbiol Biotechnol 22, 115–117 (2006). https://doi.org/10.1007/s11274-005-9005-4
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DOI: https://doi.org/10.1007/s11274-005-9005-4