The formation of polyols and fatty acids during L-lactic acid fermentation by Rhizopus arrhizus

Rosenberg, Michal; Krištofíková, Ľ.; Proksa, B.; Magdolen, Peter

doi:10.1007/bf01030912

Cited by 10 publications

(2 citation statements)

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“…Studies of lipid accumulation in fungi have been focussed on some genera of fungi [11][12][13][14][15][16]. To our knowledge since the work of Murray et al [17], Bailance [18], and Jones [19] on the total lipid content of Trichoderma viride mycelium, this present work constitutes the first qualitative and quantitative evaluation of different lipid classes in the genus Trichoderma in relation to culture conditions.…”

Section: Introductionmentioning

confidence: 98%

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Lipid accumulation in Trichoderma species

Serrano‐Carreón

1992

FEMS Microbiology Letters

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Two filamentous fungi, Trichoderma harzianum and Trichoderma viride, were compared for their ability to synthesize lipids on different carbon and nitrogen sources. Three culture media were selected for each strain after preliminary screening. All the test media were nitrogen‐deficient (C/N = 60) so as to stimulate lipid accumulation. For both microorganisms the glucose‐ammonium sulphate medium was the most conducive to lipid production: a lipid accumulation of 17% (w/w) of biomass dry weight was obtained for T. harzianum and of 32% (w/w) of biomass dry weight for T. viride. In sucrose‐sodium nitrate medium T. harzianum was able to accumulate almost 25% (w/w) of its biomass in lipid form. However the small quantity of biomass produced (2 g dry weight/l) limited the quantity of lipid obtained. Neutral lipids, free fatty acids and phospholipids were monitored during 8 days of cultivation of the two fungi.

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Section: Introductionmentioning

confidence: 98%

“…Studies of lipid accumulation in fungi have been focussed on some genera of fungi [11][12][13][14][15][16]. Table 1 Influence of carbon and nitrogen sources on growth and lipid accumulation of T. har:immm attd T. rirMe Medium…”

Section: Introductionmentioning

confidence: 99%

Lipid accumulation in Trichoderma species

Serrano‐Carreón

1992

FEMS Microbiology Letters

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Physiological restriction of the L‐lactic acid production by Rhizopus arrhizus

Rosenberg

Krišofíková

1995

Acta Biotechnologica

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The influence of basic physiological factors on the quality of inocula and L(+)-lactic acid production by Rhizopus arrhizus CCM 8 1 09 were studied. The most effective preparation of the spores (5 x 107 spores /ml) and subsequent good lactate production was achieved on the agar medium with soil extract and malt agar. The optimum initial amount of active spores for inoculation was 103-104 spores/ml. The preparation of inoculum required intensive stirring with lower aeration and pH maintained in the range from 4.8 to 6.0 by the addition of C a C 4 . The maximum yield of lactic acid production was achieved by using 5% (v/v) of 24-h-old inoculum. The intensity of lactic acid production in the inoculum was proportional to its production in the subsequent steps of fermentation and can be used as a fast control of the physiological state of the producers.

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