Oxoester oxidoreductase activities in new isolates of Pichia anomala from apple, grape and cane juices

Thirty-nine yeasts isolated from apple, grape and cane juices were screened for their oxidoreductase activity. The two strains of Pichia, one isolated from apple and one from cane juices, appear to be promising strains for oxidoreductase activity on α-oxoesters. They showed similar high yields in co...

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Bibliographic Details
Published in:FEMS yeast research 2005-04, Vol.5 (6), p.685-690
Main Authors: Pérez-Mendoza, Francisco, Ruiz-Terán, Francisco, Abarca, Blanca Escudero, Navarro-Ocaña, Arturo, Aguilar-Uscanga, Guadalupe, Valerio-Alfaro, Gerardo
Format: Article
Language:English
Subjects:
Beverages - microbiology
Esters
Esters - metabolism
Fruit juices
Lactates - metabolism
Lactic acid
Malus - microbiology
Oxidoreductase
Oxidoreductase activity
Oxidoreductases - metabolism
Pantolactone
Pichia - enzymology
Pichia - isolation & purification
Pichia anomala
Pyruvates - metabolism
Pyruvic acid
Saccharomyces
Saccharomyces - enzymology
Saccharomyces - metabolism
Saccharomyces spp
Saccharum - microbiology
Stereoisomerism
Vitis - microbiology
α-Oxoesters
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Summary:Thirty-nine yeasts isolated from apple, grape and cane juices were screened for their oxidoreductase activity. The two strains of Pichia, one isolated from apple and one from cane juices, appear to be promising strains for oxidoreductase activity on α-oxoesters. They showed similar high yields in converting ethyl pyruvate to ethyl lactate as Saccharomyces spp. (86.6% and 85.3% versus 86.6%), and higher yields in the reduction of α-oxocarboxylic esters (ketopantolactone to pantolactone: 74% and 73.3%, respectively) compared to Saccharomyces spp. (yield 60%).
ISSN:1567-1356
1567-1364
DOI:10.1016/j.femsyr.2004.11.010