Ergosterin und Fusarientoxine in Weizenkleie und Weizen

Müller, Hans‐Martin; Metzger, K.‐U.; Modi, R.; Reimann, Jens

doi:10.1111/j.1439-0396.1994.tb00338.x

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…Low ERG concentrations were recorded in flours with a high degree of purification, while higher levels were found in flours of lower milling grades. When comparing the results reported in this study with literature data we may state that, e.g., for wheat flour Müller & Schwadorf (1993) found concentrations ranging from 4.0 to 35.8 mg/kg, while Müller et al (1994) reported 11.7 mg/kg; for corn flour Maupetit et al (1993) reported the levels from 3.0 to 5.0 mg/kg. On the basis of the above results it may be suggested that ERG concentration in the presented investigations was lower than in the studies cited above.…”

Section: Resultsmentioning

confidence: 60%

Concentration of ergosterol in small-grained naturally contaminated and inoculated cereals

Perkowski¹,

Buśko²,

Stuper³

et al. 2008

Biologia

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Ergosterol (ERG) is a major sterol constituent of most fungi. Its concentration is negligible in higher plants, but can be used as a chemical marker of the presence of fungal contaminations. In this study, ERG concentration was assessed in randomly collected samples of naturally contaminated grain (wheat, barley and oat) and in samples of grain (wheat, barley, triticale and oat) harvested after inoculation of heads with conidia of different Fusarium species. Wheat samples were analysed at three stages of grain development. The lowest ERG concentration was found in non-inoculated samples at the first stage of grain development. This concentration was increasing with grain ripening. In naturally contaminated samples collected after harvest, ERG concentration was lower in wheat than in barley and oat. ERG concentrations in inoculated samples varied significantly, but were always significantly higher than in naturally contaminated samples. In the above cereal samples it was much lower than the levels assayed in laboratory cultures inoculated with fungi from genus Fusarium. The content of ERG was also analyzed in milling products of small-grained cereals and other foodstuffs, where a considerable variation was observed. The lowest ERG amounts were assayed in flours with a high degree of purification, while the highest ones in case of flours and products with a low purification rate. The results indicate the potential application of HPLC combined with microwave-assisted extraction both when assaying samples with low ERG concentrations (naturally contaminated) and those characterized with high contents of fungal biomass (strongly infected, artificially inoculated). It also facilitates analyses of fungal biomass in technological processes, where results may be expected to vary considerably.

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Section: Resultsmentioning

confidence: 60%

Concentration of ergosterol in small-grained naturally contaminated and inoculated cereals

Perkowski¹,

Buśko²,

Stuper³

et al. 2008

Biologia

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“…These observations upon effects of storage on chemical composition of the pelleted concentrates are in line with fi ndings on the hygienic quality of the pellets. Signifi cant modifi cations of chemical composition during storage would have indicated enhanced microbial activity and growth, paralleled by an increase in microbial and, particularly fungal, biomass for which ergosterol has been used as a chemical marker in cereal grains and grain by-products (Müller and Lehn, 1988;Müller et al, 1994) and compound feeds (Bailly et al, 1999). The vast majority of ergosterol concentration was considerably lower than 'preliminary normal ranges' for these types of feeds (6.1 to 6.6 mg/kg; calculated according to Schwadorf, 1988, 1990), therefore indicating products of excellent hygienic quality.…”

Section: Discussionmentioning

confidence: 99%

Quality characteristics of pelleted compound feeds under varying storage conditions as influenced by purity and concentration of glycerol from biodiesel production

Südekum¹,

Schröder²,

Fiebelkorn³

et al. 2008

J. Anim. Feed Sci.

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The effects of concentrates, in which glycerol plus soyabean meal replaced wheat, on physical, chemical and hygienic pellet quality characteristics were investigated. Three purities of glycerol were used, refl ecting different stages of the biodiesel production process. Glycerol inclusion levels were 50, 100 and 150 g/kg concentrate dry matter (DM). Concentrates were stored under good (15°C, 60% relative humidity) or bad (20°C, 70% relative humidity) environmental conditions and for 4 or 8 weeks. Chemical quality was only slightly affected by purity and concentration of glycerol and likewise by storage conditions or duration. Ergosterol concentration indicated that glycerol of different purity had a preserving effect. The physical quality of pellets was not affected by the purity of glycerol or by glycerol concentration of up to 150 g/kg DM. Glycerol at different purity may help to stabilize the hygienic quality of pelleted compound feeds without compromising the physical quality of pellets.

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Estimation of conversion factors for fungal biomass determination in compost using ergosterol and PLFA 18:2ω6,9

Klamer

Bååth

2004

Soil Biology and Biochemistry

232

133

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Ergosterin und Fusarientoxine in Weizenkleie und Weizen

Cited by 4 publications

References 21 publications

Concentration of ergosterol in small-grained naturally contaminated and inoculated cereals

Concentration of ergosterol in small-grained naturally contaminated and inoculated cereals

Quality characteristics of pelleted compound feeds under varying storage conditions as influenced by purity and concentration of glycerol from biodiesel production

Estimation of conversion factors for fungal biomass determination in compost using ergosterol and PLFA 18:2ω6,9

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