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Influence of ethyl acetate production and ploidy on the anti-mould activity of Pichia anomala

Fredlund, Elisabeth (author)
Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
Druvefors, Ulrika Ädel (author)
Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
Olstorpe, Matilda Nilsson (author)
Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
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Passoth, Volkmar (author)
Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
Schnürer, Johan, 1957- (author)
Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
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 (creator_code:org_t)
Elsevier, 2004
2004
English.
In: FEMS Microbiology Letters. - : Elsevier. - 0378-1097 .- 1574-6968. ; 238:1, s. 133-137
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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 (a(w)). At a(w) 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 mug ml(-1) headspace. At a(w) 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 mug 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.

Subject headings

NATURVETENSKAP  -- Biologi -- Mikrobiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)

Keyword

Pichia anomala
mode of action
ethyl acetate
Penicillium roqueforti
biocontrol
water-activity

Publication and Content Type

ref (subject category)
art (subject category)

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