| Autor: |
Rizzo, I, Varsavsky, E, Vedoya, G, Haidukowski, M, Frade, H, Chiale, C |
| Zdroj: |
Mycotoxin Research; Jun1998, Vol. 14 Issue 2, p46-53, 8p |
| Abstrakt: |
Since the consumption of aromatic and medicinal herbs has been increasing in the last years, the Argentinian Health Authorities are concerned to control the quality and security of them. Fungal and aflatoxin contamination are two parameters to be taken into account, to ensure the harmlessness of the phytomedicinal products. In 81 different samples, grouped in end products (EP), raw material (RM) and at harvest (SH), fungal flora (enumeration and identification) as well as natural Aspergillus flavus and aflatoxin occurrence were investigated. In all samples fungal counts fulfilled the international general recommendation limits (maximum 105 cfu/g). Predominant flora was made up by xerophilic species of Aspergillus(100%), by PeniciIlium (< 50%) and in less percentage by Fusarium (5.6%). Among the Aspergilli, A. flavus was present in all the three groups of samples. Using a TLC method, 47% of A. flavus isolates were toxinogenic, producing aflatoxin B1 and B2. In herbs, 4.7% of RM samples were naturally contaminated with aflatoxins B1 and B2. Considering the carcinogenic activity of aflatoxins it is essential to regulate them in the raw material (vegetal drug). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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