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KMID : 1160220030310030157
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Mycobiology
2003 Volume.31 No. 3 p.157 ~ p.161
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Keratinolytic Activity of Five Aspergillus Species Isolated from Poultry Farming Soil in Korea
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Kim Jeong-Dong
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Abstract
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Various soil samples were collected from twenty-four areas of ten different poultry farms in Korea and screened for prevalence of keratinolytic fungi. Fourteen species of feather-associated fungi belonging to ten genera Acremonium, Alternaria, Aspergillus, Cladosporium, Curvularia, Fusarium, Monascus, Mucor, Penicillum, and Verticillium isolated from poultry soils were grown on keratin medium. Especially, Aspergillus spp. populations associated with the soil sample is 1×105 cfu/g. A. flavus, A. fumigatus, A. niger, A. nidulans, and A. terreus could utilize keratin of chicken feather and degrade it, producing sulphydryl-containing compounds detected as keratinase, cysteine and total proteins. Keratinolytic activities of five Aspergillus species also changed the pH of the medium more alkaline than those that were less keratinolytic.
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KEYWORD
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Feathers, Keratinase, Keratinophilic fungi, Aspergillus spp.
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