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International Journal of Molecular and Clinical Microbiology
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Jafarian, F., Chaichi Nosrati, A., Modiri, L., Faezi Ghasemi, M. (2013). A comparative investigation on zearalenone toxin production patterns during mycoprotein production by Fusarium solani using carbon and nitrogen resources. International Journal of Molecular and Clinical Microbiology, 3(1), 248-254.
Fereshteh Jafarian; Arash Chaichi Nosrati; Leila Modiri; Mohammad Faezi Ghasemi. "A comparative investigation on zearalenone toxin production patterns during mycoprotein production by Fusarium solani using carbon and nitrogen resources". International Journal of Molecular and Clinical Microbiology, 3, 1, 2013, 248-254.
Jafarian, F., Chaichi Nosrati, A., Modiri, L., Faezi Ghasemi, M. (2013). 'A comparative investigation on zearalenone toxin production patterns during mycoprotein production by Fusarium solani using carbon and nitrogen resources', International Journal of Molecular and Clinical Microbiology, 3(1), pp. 248-254.
Jafarian, F., Chaichi Nosrati, A., Modiri, L., Faezi Ghasemi, M. A comparative investigation on zearalenone toxin production patterns during mycoprotein production by Fusarium solani using carbon and nitrogen resources. International Journal of Molecular and Clinical Microbiology, 2013; 3(1): 248-254.

A comparative investigation on zearalenone toxin production patterns during mycoprotein production by Fusarium solani using carbon and nitrogen resources

Article 6, Volume 3, Issue 1, Winter and Spring 2013, Page 248-254  XML PDF (421.54 K)
Document Type: Research Article
Authors
Fereshteh Jafarian* ; Arash Chaichi Nosrati; Leila Modiri; Mohammad Faezi Ghasemi
Division Microbiology, Department of Molecular and Cell Biology, Faculty of Basic Sciences, Lahijan branch, Islamic Azad University (IAU), Lahijan, Gilan, I.R Iran,
Abstract
Fusarium is a fungus that is commonly found as saprophytes with parasitic life on some living organisms. Mycoprotein or fungus proteins with physical and chemical features are known as food in recent years. When they are involved in temperature and wet stress, release materials such as mycotoxins or fungus toxins remained in food. Zearalenone and dependent compounds have distinct role in many fungus toxicity and beings especially despite acute toxicity. Also the global allowed rate of zearalenone in foods is 30-1000 nano gr/ppb. The submerged culture environment to produce fungus biomass was Vogel basic medium.Then, the produced fungus biomasses were harvested at 4500rpm for about 20 minutes by centrifugation, washed and rinsed twice and desiccated overnight in room temperature. The dry weight biomass was measured and used in order to measure protein rate extracts for toxin estimating based on producer instructions. Then, 50ml substrate was added and after 5 minutes stopper enzyme was added. Finally, the zearalenone toxin amount was measured by ELISA reader system. The results show that after nitrogen resource, the carbon resource play the second role in production and increase of toxin rate in mycoprotein biomass extracts. Verifying the optimum submerged environment in which all optimal conditions of each steps were applied (the first priority of optimal environment include 0.25% of Starch originated carbon resource and 0.25% of Urea originated nitrogen resource) showed the rate of protein production was 0.642% that is have more increased about 0.207% in relation to basic submerged environment. In this environment the amount of zearalenone toxin was 0.99 ppb/gr. In the other way, when we use 2.64% of Rice bran as replacement carbon resource, using 0.75% of Urea in compare with 0.50% of Soy bean peptone as nitrogen resources we could observe an increase of toxin rate in biomass about 0.66 %. While the amount of Urea reduced to 33% and even we use 0.25% of Starch instead of Rice bran, the toxin in biomass reduced into 71% and reached to 0.99 ppb/gr. When we use 2.30% of Meat peptone, applying 0.50% of Urea in compares with 0.50% of Soy bean peptone increase up to 66% of zearalenone toxin in biomass and reached to 0.77 ppb/gr.
Keywords
Zearalenone toxin; Mycoprotein; Fusarium solani
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