Document Details
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Document Type |
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Thesis |
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Document Title |
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Factors affecting toxicity of both aflatoxins and ochratoxins produced from fungi separated from rains in some markets in Jeddah city in Kingdom of Saudi Arabia العوامل المؤثرة على سمية كل من.الافلاتوكسين والاوكراتوكسين المنتجة من الفطريات المعزولة من الحبوب في بعض أسواق مدينة جدة بالمملكة العربية السعودية |
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Subject |
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Factors affecting toxicity of both aflatoxins and ochratoxins produced from fungi separated from rains in some markets in Jeddah city in Kingdom of Saudi Arabia |
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Document Language |
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Arabic |
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Abstract |
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Factors affecting toxicity of both aflatoxins and ochratoxins produced from fungi separated from rains in some markets in Jeddah city in Kingdom of Saudi Arabia
This thesis dealt with one of the most important problems facing grains and legumes stored in Kingdom of Saudi Arabia, and the presence of fungi in these grains indicates bad storage, in this thesis, it was noticed the dominance of storage fungi and some of the isolated fungi produce dangerous fungal toxins due to processing of grains and legumes under wrong storage circumstances, from the separated toxins the aflatoxins with types B1, B2, G1 and G2, also the ochratoxins, the study dealt with the physical, chemical and biological factors affecting the production of aflatoxins and ochratoxins and their effects on chicken eggs embryo.
* Results :
During isolation and definitions of fungi polluting the grains and legumes, appeared thc dominance of some fungi, A. niger, Rhizopus, A. flavus, also some other species are isolated Glicolaium, Fusarium, Chaetomium, and Botryodiplodia, on testing the ability of the separated fungi to produce aflatoxins and ability of fungi A. ochraceus and Penicilium to produce ochratoxin, and by studying the factors affecting production of both toxins, it showed that the best suitable temperature (25oC), the natural environments is more suitable for production of toxins than the artificial environments, also the best percentage of humidity for production of aflatoxins and ochratoxins is (93%), the production is better in acidic media compared to alkaline or neutral media. |
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Supervisor |
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DR.ferdous bukhari |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1420 AH
1499 AD |
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Co-Supervisor |
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DR.Fatmah Tawfeeg |
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Added Date |
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Monday, March 2, 2015 |
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Researchers
| نهاد محمود قمقمجي | Kumkumje, Nehad Mahmoud | Investigator | Master | |
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