School of Food and Biological Engineering Shaanxi University of Science & Technology Xi''an 710021 China;
School of Food and Biological Engineering Shaanxi University of Science & Technology Xi''an 710021 China;
School of Food and Biological Engineering Shaanxi University of Science & Technology Xi''an 710021 China;
School of Food and Biological Engineering Shaanxi University of Science & Technology Xi''an 710021 China;
Nano-selenium; Bacteriostasis; Microorganism; Mechanism;