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Tytuł pozycji:

Quantification of Aspergillus fumigatusand enteric bacteria in European compost and biochar

Tytuł :
Quantification of Aspergillus fumigatusand enteric bacteria in European compost and biochar
Autorzy :
Franceschini, Selma
Chitarra, Walter
Pugliese, Massimo
Gisi, Ulrich
Garibaldi, Angelo
Lodovica Gullino, Maria
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Źródło :
Compost Science & Utilization; January 2016, Vol. 24 Issue: 1 p20-29, 10p
Periodyk
ABSTRACTAlthough most potential human pathogens (PHPs) can be inactivated during composting, the risk that such substrates represent for human health remains largely unknown due to the shortage of information on presence and abundance of PHPs in finished composts. This study focused on the assessment of Salmonellaspp., Listeria monocytogenes, Shiga toxin-producing Escherichia coli(STEC), and the opportunistic fungal pathogen Aspergillus fumigatusin different compost commodities. A total of fifteen European composts, made from different waste types and processes, were evaluated for the occurrence of the selected PHPs using molecular and traditional techniques. The analyses were extended to five biochar because of their growing application in agriculture, horticulture, floriculture, and private gardening.Enteric bacteria were detected by molecular methods in eight out of fifteen composts; however, viable propagules were confirmed for L. monocytogenesonly in two composts, and for STEC in three more composts. No bacterial pathogens were found in biochar. Living A. fumigatuswas present in eleven composts and two biochars. None of the eighteen isolates contained single nucleotide polymorphisms (SNPs) relevant for resistance to azole fungicides. The role of compost and biochar as a source of PHPs in the environment and the risk for human health is discussed.

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