Investigation of microbiological characteristics of canned tomato pasteproduct in IRAN

Background and Aim : Tomato paste is one of the processed tomato products that has a longshelf life and is used as an important food ingredient all over the world. According to globalstatistics, Iran is among the top ten producers of tomato paste in the world, Iran ranks sixth toseventh among producers in the world, and is among the ten producers that play a role ininternational trade.Methods : In order to investigate the possible contamination of canned tomato paste in the country,۴۶ samples of canned tomato paste in the amount of ۱۸۴ cans of ۸۰۰ grams were purchased fromthe market. The samples incubate at of ۳۰C◦ ± ۱C◦ for ۱۴ days and ۵۵ C◦ ± ۱C◦ for ۷ days.Results : The contents of both test containers were tested separately for mesophilic bacteria,thermophilic bacteria, mold and yeast. Out of ۴۶ samples of canned tomato paste, ۲۹ samples(۶۳%) showed contamination with thermophilic bacteria.Conclusion : phenotypic and genotypic tests were performed to determine the type of thermophilicbacteria on the obtained colonies and the type of the desired species was examined inpathogenicity.

کلیدواژه ها:

canned tomato paste ، thermophilic bacteria ، mesophilic bacteria