Further studies of extracellular enzyme profiles of xerophilic fungi isolates from dried medicinal plants

• Autorzy: Janda K , Ulfig K , Markowska-Szczupak A
• Języki publikacji: EN

Abstrakty

EN

The contamination of dried medicinal plants with microscopic fungi has been the subject of many studies. However, no data on extracellular enzyme activities of xerophilic fungi contaminating the plants have been found in the literature. Therefore, the objective of our study was to determine extracellular enzyme profiles of fast-growing xerophilic fungi, i.e. Aspergillus flavus, A. fumigatus, A. melleus, A. nidulans, A. niger, A. parasiticus and Trichothecium roseum isolated from dried medicinal plants from herbal shops in Szczecin, Poland. Solid media and the API ZYM® test were used for measuring enzyme activities. Among the fungi, A. melleus had the highest hydrolytic activity on milk, gelatin, starch, tributyrin, rapeseed oil and biodiesel oil agars, while A. fumigatus showed extremely high stimulation index values on rapeseed oil and biodiesel oil agars. The stimulation index increased during a 5-day incubation period. In the API ZYM® test A. nidulans showed the highest hydrolase activity. Among the hydrolases, ß-glucosidase activity was the highest, followed by acid phosphatase, N-acetyl-ß-glucosaminidase and naphthol-AS-BI-phosphohydrolase activities. The fungi contaminating dried medicinal plants are able to utilize a number of substrates and, therefore, possess high biodeterioration potential. Due to the ability to degrade hydrocarbons, fungal isolates from dried medicinal plants can be used for biotechnological purposes, e.g. in air biofiltration and waste or soil bioremediation.

Słowa kluczowe

EN

medicinal plant; dried plant; enzyme profile; xerophilic fungi; fungi; isolate; Aspergillus flavus; Aspergillus fumigatus; Aspergillus melleus; Aspergillus niger; Aspergillus parasiticus; Trichothecium roseum; extracellular enzyme; solid medium; API ZYM test

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2009
• Tom: 18
• Numer: 4
• Opis fizyczny: p.627-633,ref.

Twórcy

autor

Janda K

• Department of Microbiology and Environmental Biotechnology, Agriculture University of Szczecin, Slowackiego 17, 71-434 Szczecin, Poland

autor

Ulfig K

• Division of Biomaterials and Microbiological Technologies, Polymer Institute, Szczecin University of Technology, Pulaskiego 10, 70-322 Szczecin, Poland

autor

Markowska-Szczupak A

• Institute of Chemical and Environmental Engineering, Department of Biotechnology, Szczecin University of Technology, Pulaskiego 10, 70-322 Szczecin, Poland

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