تازه ها در میکروب شناسی دامپزشکی

تازه ها در میکروب شناسی دامپزشکی

بررسی آلودگی باکتریایی میگو پرورشی (Litopenaeus Vannamei) در استان بوشهر و اثر فرآیند انجماد بر ویژگی‌های میکروبیولوژیکی و فیزیکوشیمیایی آن

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانش‌آموخته کارشناسی ارشد، گروه علوم و مهندسی صنایع غذایی، واحد صفادشت، دانشگاه آزاد اسلامی، تهران، ایران
2 استادیار، گروه علوم و صنایع غذایی، واحد صفادشت، دانشگاه آزاد اسلامی، تهران، ایران
چکیده
میگو یکی از منابع غذایی مهم برای انسان است. مسمومیت‌های غذایی ناشی از خوردن مواد غذایی دریایی و میگو به‌عنوان یک خطر مهم جهت سلامتی انسان می‌باشد. لذا هدف از مطالعه حاضر بررسی آلودگی باکتریایی میگو پرورشی پاسفید در استان بوشهر و اثر فرآیند انجماد بر ویژگی‌های میکروبیولوژیکی و فیزیکوشیمیایی آن می‌باشد. تعداد 120 نمونه میگو به‌صورت تصادفی انتخاب و جهت ارزیابی بار میکروبی و وضعیت شیمیایی به آزمایشگاه انتقال داده شد. برای آنالیز داده‌ها از نرم‌افزار SPSS نسخه21 و آزمون مقایسه دانکن در سطح معنی‌دار (05/0P<) استفاده شد. نتایج نشان داد که میزان آلودگی برای اشریشیاکلی 35/13 درصد، سالمونلا 18/14 درصد، استافیلوکوکوس اورئوس 83/45 درصد، لیستریا 83/10 درصد و ویبریو 35/13 درصد بود. آنالیزها نشان داد که بین میکروارگانیسم‌های مختلف و درصد آلودگی ارتباط معنی‌داری وجود نداشت. با توجه به نتایج حاصل آنالیز آماری از 120 نمونه کشت میگو در محیط کشت و نتایج حاصل آن که مورد بررسی قرار گرفت نشان داد، میزان TVN در چهار مورد روش نگهداری با هم تفاوت معناداری داشتند، همچنین کمترین و بیشترین میزان TVN را به‌ترتیب نمونه‌های بسته‌بندی در تونل انجماد و بلافاصله داشتند. نتایج آلودگی به کلی‌فرم نشان داد که میزان بار کلی‌فرم در چهار مورد بررسی کمتر از CFU/g 100 و در محدوده استاندارد (کمتر از CFU/g 100) بودند. با توجه به آلودگی بالایی که تمامی نمونه‌ها به میکروارگانیسم‌های پاتوژن داشتند، بکارگیری مقررات سختگیرانه توسط سازمان‌های نظارتی باید بیش از پیش افزایش یابد تا سلامت مردم و جامعه تضمین گردد.

موضوعات


عنوان مقاله English

Investigating the bacterial contamination of farmed white shrimp (Litopenaeus vannamei) in Bushehr province and the effect of the freezing process on its microbiological and physicochemical characteristics

نویسندگان English

Mohamad Reza Ansari 1
Masoud Homopour 2
Maryam Moslehishad 2
1 Master's student, Department of Food Science and Engineering, Safadasht Branch, Islamic Azad University, Tehran, Iran
2 Assistant Professor, Department of Food Science and Industry, Safadasht Branch, Islamic Azad University, Tehran, Iran
چکیده English

Shrimp is one of the important food sources for humans. Food poisoning caused by eating seafood and shrimp is an important risk to human health. Therefore, the purpose of this study to investigate the bacterial contamination of Pasfid shrimp in Bushehr province and the effect of freeze process on its microbiological and physicochemical characteristics. 120 shrimp samples were randomly selected and transferred to the laboratory to evaluate the microbial load and chemical status. SPSS version 21 software and Duncan's comparison test were used for data analysis at a significant level of P<05.00. The results showed that the contamination rate for Escherichia coli was 13.35%, Salmonella 14.18%, Staphylococcus aureus 45.83%, Listeria 10.83% and Vibrio 13.35%. The analysis showed that there was no significant relationship between different microorganisms and the percentage of contamination. According to the results of the statistical analysis of 120 samples of shrimp cultivation in the culture medium and the results that were analyzed showed that the amount of TVN in four cases of storage methods had a significant difference, also the lowest and the highest amount of TVN according to the sample The packages were frozen in the tunnel immediately. The results of coliform contamination showed that the amount of coliform load in four investigated cases was less than 100 CFU/g and within the standard range (less than 100 CFU/g). Considering the high contamination that all the samples had with pathogenic microorganisms; The application of strict regulations by regulatory organizations should be increased to ensure the health of people and society.

کلیدواژه‌ها English

Microbial Contamination
chemical Contamination
Freezing process
seafood
white shrimp
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دوره 7، شماره 1
بهار و تابستان
شهریور 1403
صفحه 122-133

  • تاریخ دریافت 17 بهمن 1402
  • تاریخ بازنگری 22 اسفند 1402
  • تاریخ پذیرش 22 اردیبهشت 1403