Application of ε-poly-L-lysine٠HCl on Extending the Shelf-Life of Spiced Meats
International Journal of Nutrition and Food Sciences
Volume 8, Issue 2, March 2019, Pages: 40-45
Received: Jul. 3, 2019; Published: Aug. 27, 2019
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Authors
Gao Xiang, Beijing Key Laboratory of Agricultural Product Detection and Control of Spoil Age Organisms and Pesticide Residue, Beijing University of Agriculture, Beijing, China
Hao Yu, The Teaching Group of Food Chemistry, Faculty of Food Science and Engineering, Beijing University of Agriculture, Beijing, China
Wu Zhumeng, The Teaching Group of Food Chemistry, Faculty of Food Science and Engineering, Beijing University of Agriculture, Beijing, China
Wang Fang, Beijing Innovation Consortium of Swine Research System, Beijing, China
Pang Meixia, Beijing Innovation Consortium of Swine Research System, Beijing, China
Qi Jinghua, Beijing Innovation Consortium of Swine Research System, Beijing, China
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Abstract
In order to prolong the shelf life of spiced meats, ε-poly-L-lysine٠HCl (ε-p-L٠HCl) was used as preservative, and four kinds of corruption bacterium (Staphylococcus, Proteus, Bacillus and Serratia) were used as indicator bacterium. The minimum inhibitory concentration of preservatives against them was 500 ug/mL. The suitable concentration, temperature and pH were determined by single factor experiment. On the basis of single factor experiment, orthogonal experiment was used to get the best bacteriostasis conditions. The optimum condition for Staphylococcus and Proteus ware 1.2 mg/mL, 80°C and pH 3. The optimum condition for Bacillus and Serratia were 1.2 mg/mL, 80°C and pH4. According to the national standard, preservatives were added to the spiced meat with the use of 0.25 g/kg in the experimental group, and no preservatives were added in the control group. The total number of bacteria and the sensory score were used as evaluation indexes to explore the effect of preservatives on shelf life. Compared with the control group, at the same storage time, the sensory score was higher and the total number of colonies was less. It was concluded that added ε-p-L٠HCl could extend the shelf-life of the spiced pork for 8 days, added ε-p-L٠HCl could extend the shelf-life of the sauced bath chap for 7 days.
Keywords
ε-p-L٠HCl, Spiced Meats, Shelf-Life
To cite this article
Gao Xiang, Hao Yu, Wu Zhumeng, Wang Fang, Pang Meixia, Qi Jinghua, Application of ε-poly-L-lysine٠HCl on Extending the Shelf-Life of Spiced Meats, International Journal of Nutrition and Food Sciences. Vol. 8, No. 2, 2019, pp. 40-45. doi: 10.11648/j.ijnfs.20190802.13
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