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  • Articles  (2)
  • Blackwell Publishing Ltd  (1)
  • Springer  (1)
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  • Articles  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Influence of ethyl acetate production and ploidy on the anti-mould activity of Pichia anomala (2004)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 238 (2004), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A diploid and a haploid strain of Pichia anomala were tested for their biocontrol ability against the spoilage mould Penicillium roqueforti in glass tubes filled with grain at two water activities (aw). At aw 0.98, the two yeast strains grew and inhibited mould growth equally well and showed similar patterns of ethyl acetate production, reaching maximum values of 10–14 μg ml−1 headspace. At aw 0.95, both growth and biocontrol performance of the haploid strain were reduced. Ethyl acetate formation was also substantially reduced, with maximum headspace concentrations of 4 μg ml−1. We conclude that ethyl acetate is a major component of the anti-mould activity. The inhibitory effect of ethyl acetate was confirmed in a bioassay where the pure compound reduced biomass production of P. roqueforti.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.2004.tb09747.x
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of the Genetic System of the Xylose-Fermenting Yeast Pichia stipitis (1996)
    Springer
    Current microbiology 33 (1996), S. 237-242 
    Details
    ISSN: 1432-0991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. High mutant frequencies indicated that the wild-type strains of Pichia stipitis are haploid. Sporulation ability of these clones pointed to a homothallic life cycle. Mating was induced by cultivation under nutritionally poor conditions on malt extract medium. Conjugation was followed immediately by sporulation. However, hybrids could be rescued by transferring the nascent zygotes to complete medium before meiosis had started. Under rich nutritional conditions, hybrids were mitotically stable and did not sporulate. The segregation pattern of auxotrophic markers of diploid zygotes indicated regular meiosis, although asci contained preferentially spore dyads.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002849900106
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    Paper (German National Licenses)
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