Existance of Microbial Species in Vermicomposts Derived from Mixed Sesame Crust and Cow Manure Treatments

سال انتشار: 1395
محل انتشار: فصلنامه بهداشت محیط و توسعه پایدار، دوره: 2، شماره: 1
کد COI اختصاصی: JR_JEHSD-2-1_006
زبان مقاله: انگلیسی
تعداد مشاهده: 497

نویسندگان

International Campus, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

Environmental Science and Technology Research Center, Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

Hossein Karimi

Isfahan university of Medical Sciences, Isfahan, Iran.

Mehdi Mokhtari

Environmental Science and Technology Research Center, Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

چکیده

Introduction: The presence of pathogenic microbial agents and pathogens in organic fertilizers causes health problems and disease transmission.Therefore ,the aim of this study was to identify bacterial and fungal species present in vermicompost production. Materials and Methods: This experimental study was conducted in pilot scale in the laboratory of Public Health School in Shahid Sadoughi Univerity of Yazd. Sesame crust obtained from sesame pudding factory and cow manure mixed in three reactors with the dimension of 50 × 30 × 15 cm were used and went under the vermicompost process. Another reactor was also provided from cow manure as the control variable. Treatments were studied simultaneously during 60 days. Experiments were conducted to detect bacterial and fungal species. Results: Totally 18 species of negative-gram bacterial species, i.e., Salmonella typhimurium, Salmonella Paratayfi A, Acinetobacter baumannii, Escherichiacoli, Proteus mirabilis, Proteus vulgaris, Providencia alkali Fasyns, Klebsiella oxy-Toka, Ponomonya Klebsiella, Citrobacter frondii, Citrobacter Diorsus, Serratia Marsns, Hafnya Olovia, pseudomalle Burkholderia, EnterobacterPeinous, Enterobacter Anrogenious, Enterobacter de Solonos, as well as Neisseria polysakarya, and 3 positive-gram bacterial species, i.e., Bacillus subtilis, Bacillus cereus, Isteria monocytogenes grew. Overally, a total of five fungi species; Aspergillus flavus, Aspergillus niger, Cladosporium, Penicillium, yeasts, and Unknown fungal species grew. Conclusion: The results of this study showed that presence of the organism in vermicompost depends on various factors, such as the action of enzymes of gut earthworms, coelomic fluid secretion, as well as competition between different groups of microorganisms

کلیدواژه ها

Microbial Species, Vermicompost, Sesame Crust, Cow Manure

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