Effect of Aluminium oxide on inhibition activity of a deep-sea Penicillium sp. against Aspergillus parasiticus

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Li, Wei^1 ; Yan, Peisheng^1 ; Wang, Jingying^1 ; Shi, Cuijuan^1 ; Zhou, Ying^1 ; Gao, Xiujun^1 ; Li, Mengying^1

College of Marine Science and Technology, Harbin Institute of Technology, Weihai Campus, West culture road 2, Shandong Province, Weihai

264209, China^1

关键词: Aluminium oxide;    Aspergillus parasiticus;    Experimental verification;    Fermentation broths;    Inhibition activity;    Micro particles;    Optimal combination;    Rotational speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/2/022026/pdf
DOI  :  10.1088/1757-899X/394/2/022026

来源: IOP

【 摘 要 】

In this study, the effects of aluminium oxide content, micro particle diameter and rotational speed on the activity of fermentation broth of deep-sea Penicillium MHE1 in inhibiting the growth of Aspergillus parasiticus NFRI-95 hypha and aflatoxin production were studied by uniform design. The optimal combination is obtained by regression analysis and experimental verification. The optimal combination is 1.015 g/L and 101.5 mesh in diameter for aluminium oxide, and 108.6 r/min for rotation incubation. Under these conditions, the mycelium inhibition rate of fermentation broth of strain MHE1 to Aspergillus parasiti NFRI-95 reached 85.88%, and the aflatoxin inhibition rate reached 100%, which increased by 7.1% and 9.2% respectively compared with that before optimization.