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Pyrosequencing investigation into the influence of Cu^(2+),Zn^(2+),Fe^(2+)and I^- mixtures on fungal diversity and toxigenic fungal growth in a fermented liquid feed

Pyrosequencing investigation into the influence of Cu^(2+),Zn^(2+),Fe^(2+)and I^- mixtures on fungal diversity and toxigenic fungal growth in a fermented liquid feed
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摘要 A L_9(3~4) orthogonal experiment was conducted to evaluate the influence of 9 mixtures which consisted of Cu^(2+), Zn^(2+), Fe^(2+) and I^- ions at different ion concentrations on fungal diversity and toxigenic fungal growth in a Bacillus subtilis-fermented liquid feed(FLF) using pyrosequencing. The maximal Chao estimator and Shannon index were achieved in the FLF with a mixture of Cu^(2+)(200 mg/kg), Zn^(2+)(160 mg/kg),Fe^(2+)(150 mg/kg) and I^-(2.4 mg/kg). The minimal relative abundance of Aspergillus was achieved when a mixture of Cu^(2+)(200 mg/kg),Zn^(2+), Fe^(2+) and I^-was added to the FLF. Compared with Zn^(2+), Fe^(2+) and I^-,Cu^(2+) was the most important ion in inhibitingAspergillus growth. Adding Zn^(2+)(160 mg/kg), Cu^(2+), Fe^(2+) and I^- to the FLF minimized the relative abundance ofFusarium. It was Zn^(2+) instead of Cu^(2+) played a critical role in suppressing the growth of Fusarium. The proper use of the mixture of Cu^(2+), Zn^(2+), Fe^(2+) and I^-in FLF contributes to inhibit the growth of mycotoxin-producing fungi during storage. The new findings of this study help farmers properly use the mixture of Cu^(2+),Zn^(2+), Fe^(2+) and I^- to inhibit the growth of mycotoxinproducing fungi in the production of high quality FLF and alleviate mycotoxins damages to animals and humans. A L_9(3~4) orthogonal experiment was conducted to evaluate the influence of 9 mixtures which consisted of Cu^(2+), Zn^(2+), Fe^(2+) and I^- ions at different ion concentrations on fungal diversity and toxigenic fungal growth in a Bacillus subtilis-fermented liquid feed(FLF) using pyrosequencing. The maximal Chao estimator and Shannon index were achieved in the FLF with a mixture of Cu^(2+)(200 mg/kg), Zn^(2+)(160 mg/kg),Fe^(2+)(150 mg/kg) and I^-(2.4 mg/kg). The minimal relative abundance of Aspergillus was achieved when a mixture of Cu^(2+)(200 mg/kg),Zn^(2+), Fe^(2+) and I^-was added to the FLF. Compared with Zn^(2+), Fe^(2+) and I^-,Cu^(2+) was the most important ion in inhibitingAspergillus growth. Adding Zn^(2+)(160 mg/kg), Cu^(2+), Fe^(2+) and I^- to the FLF minimized the relative abundance ofFusarium. It was Zn^(2+) instead of Cu^(2+) played a critical role in suppressing the growth of Fusarium. The proper use of the mixture of Cu^(2+), Zn^(2+), Fe^(2+) and I^-in FLF contributes to inhibit the growth of mycotoxin-producing fungi during storage. The new findings of this study help farmers properly use the mixture of Cu^(2+),Zn^(2+), Fe^(2+) and I^- to inhibit the growth of mycotoxinproducing fungi in the production of high quality FLF and alleviate mycotoxins damages to animals and humans.
出处 《Animal Nutrition》 SCIE 2016年第1期51-56,共6页 动物营养(英文版)
基金 supported by Jiangxi Provincial Key Technology R&D Program (20121BBF60032 and 20132BBF60039)
关键词 Trace elements Fungal growth Mixture of ions Fermented liquid feed PYROSEQUENCING Trace elements Fungal growth Mixture of ions Fermented liquid feed Pyrosequencing
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