L. Qinsheng, Our country vegetables processing and circulation present situation and trend of development [J]. Machinery For Cereals,oil and Food Processing, pp.1-4, 2000.

Z. Xuejie, Our country vegetables processing industry present situation and faced with WTO opportunity and challenge[J].Science and Technology of Food Indusry, pp.82-85, 2001.

A. Marí-a-pirovani, D. Piagentini, and . Güemes, Reduction of chlorine concentration and microbial load during washing-disinfection of shredded lettuce, International Journal of Food Science and Technology, vol.66, issue.3, pp.341-347, 2004.
DOI : 10.1111/j.1365-2621.2004.00791.x

Z. Likui and L. Zhaoxin, Study on predictive model for total coliform group reduction on fresh-cut lettuce treated with NaClO[J].Food Science, pp.67-71, 2004.

G. M. Sapers, Efficacy of Washing and Sanitizing Methods for Disinfection of Fresh Fruit and Vegetable Products, J.Food Technol, issue.39, pp.305-311, 2001.

M. Shihao?ling and B. , Hospital sewage disposal, Beijing?Chemical industry publishing house, 2000.