我国市售水果中微生物污染状况研究OACSTPCD

[Objective]To investigate the microbial contamination of fruits in China.[Method]A total of 3 492 samples of fruits were collected,including 3062 unprocessed fresh fruits and 430 peeled or pre-cut fruits.Escherichia coli(E.coli),Salmonella,Listeria monocytogenes and Diarrheagenic Escherichia coli in fruits were examined according to China national standard method.[Result]The aver-age dissatisfaction rate of E.coli in fruits was 2.32%(81/3 492).The dissatisfaction rate of E.coli in peeled or pre-cut fruits was 4.88%(21/430),which was higher than that of unprocessed fresh fruits(1.96%,60/3 062),and the difference was statistically significant(P＜0.05).The detection rates of pathogens in fruits were low,and the detection rates of Listeria monocytogenes,Salmonella and Diarrheagenic Escherichia coli were 0.40%(14/3 492),0.29%(10/3 492)and 0.52%(18/3 492),respectively.There was no statistical difference in the detection rate of three kinds of pathogens between peeled or pre-cut fruits and unprocessed fresh fruits(P＞0.05).Among all kinds of unprocessed fruits,cantaloupe has the most serious microbial contamination.[Conclusion]The dissatisfaction rate of Escherichia coli and the detection rate of pathogenic bacteria in fruits were low.