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Comparison of the Aflatoxin B1 Production Pattern in Fungal Biomass and Growth Medium in ToxigenicAspergillus Species of Northern Isolates of Iran
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نویسنده
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Ahmadian Fatemeh ,Chaichi Nosrati Arash ,Shahriari Ali ,Faezi Ghasemi Mohammad ,Shokri Soheil
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منبع
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دامپزشكي ايران - 2020 - دوره : 16 - شماره : 2 - صفحه:14 -21
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چکیده
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Aflatoxin is the most economically important mycotoxin in the world. the most toxic form of aflatoxin isaflatoxin b1. it is one of the few fungal toxins that is regulated by the us food and drug administration; moreover, compared with other mycotoxins, more is known about its biology and biosynthesis. in the present study, our aim was to detect the ability of aflatoxin b1 to be produced in different aspergillus species that have been isolated from agro-ecological zones and processing plants in the north of iran. the concentration of afb1 in the samples was investigated by competitive enzyme-linked immunosorbent assay (elisa). also, through using the elisa method, the aflatoxin b1 production pattern was compared between fungal biomass and growth medium in toxicogenic isolates. the results showed that all of the studied aspergillus species isolates tended to produce aflatoxin b1. although there was a statistically significant difference in the mean of aflatoxin b1 in growth medium and cell extract in several species, in a. flavus, a. parasiticus, a. sojae, a. terreus, a. ostianus, a. carbonarius, a. wentii, storing the toxin in fungal cell was more than that of releasing toxin in matrix culture medium. in the other isolates including a. niger, a. foetidus and a. ocraceus, export of toxin was more than that of cell storage. we concluded that toxicogenic isolates of aspergillus spp can be found in all the studied geographic areas of northern iran. although the behavior of species in releasing of aflatoxin into the growth environment was different, wehypothesized that it depends on different mechanisms that effect export toxin into the external environment.
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کلیدواژه
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Aflatoxin ,Aspergillus ,Fungal Biomass ,Growth Medium ,Toxigenic
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آدرس
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Islamic Azad University, Lahijan Branch, Faculty Of Basic Sciences, Iran, Islamic Azad University, Lahijan Branch, Faculty Of Basic Sciences, Department Of Microbiology, Iran, Shahid Chamran University Of Ahvaz, Faculty Of Veterinary Medicine, Department Of Basic Sciences, Iran, Islamic Azad University, Lahijan Branch, Faculty Of Basic Sciences, Department Of Microbiology, Iran, Islamic Azad University, Lahijan Branch, Faculty Of Basic Sciences, Department Of Statistics, Iran
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Comparison of the aflatoxin B1 production pattern in fungal biomass and growth medium in toxigenic Aspergillus species of northern isolates of Iran
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Authors
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Shahriari Ali ,Chaichi Nosrati Arash ,Ahmadian Fatemeh ,Faezi Ghasemi Mohammad ,Shokri Soheil
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Abstract
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Aflatoxin is the most economically important mycotoxin in the world. The most toxic form of aflatoxin is aflatoxin B1. It is one of the few fungal toxins that is regulated by the US food and drug administration; moreover, compared with other mycotoxins, more is known about its biology and biosynthesis. In the present study, we aimed at detecting the ability of producing aflatoxin B1 in different Aspergillus species that have been isolated from agroecological zones and processing plants in the North of Iran. Also, through using the ELISA method, the aflatoxin B1 production pattern was compared between fungal biomass and growth medium in toxicogenic isolates. The results showed that all of the studied Aspergillus species isolates tended to produce aflatoxin B1. Although there was a statically significant difference in the mean of aflatoxin B1 in growth medium and cell extract in several species, in A. flavus, A. parasiticus, A. sojae, A. terreus, A. ostianus, A. carbonarius, A. wentii storing, the toxin in fungal cell was more than that of releasing toxin in matrix culture medium. In the other isolates including A. niger, A. foetidus, and A. ocraceus, export of toxin was more than that of cell storage. We concluded that toxicogenic isolates of Aspergillus spp can be found in all studied geographic areas of Northern Iran. Although the behavior of species in releasing of aflatoxin into the growth environment was different, we hypothesized that it depends on different mechanisms that effect on export toxin into the external environment.
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Keywords
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