ارزیابی کارآیی روش فرآوری با اشعه فرابنفش در کاهش بار میکروبی برخی از دانه های آجیلی پرمصرف

نویسندگان
بهروز اکبری 1
صبا صادقی 2
مسعود هماپور 3
فائزه شیرخان 4
1 سازمان غذا و دارووزارت بهداشت، درمان و آموزش پزشکی
2 گروه علوم و صنایع غذایی، دانشکده داروسازی، علوم پزشکی، دانشگاه آزاد اسلامی، تهران، ایران
3 Pharmacy Faculty, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
4 مرکز تحقیقات علوم تغذیه و صنایع غذایی، علوم پزشکی تهران، دانشگاه آزاد اسلامی، تهران، ایران
10.52547/fsct.17.101.31
چکیده
دانه ­های آجیلی می­توانند یک منبع آلودگی با انواع مختلف میکروارگانیسم­ها باشند لذا برخی از آن‌ها برای سلامتی عمومی مهم هستند. بنابراین با توجه به مصرف خانگی انواع دانه های آجیلی و کاربرد آن‌ها در صنایع غذایی و همچنین به دلیل اینکه برخی از آن‌ها از کشورهای دیگر وارد می‌شوند ممکن است احتمال آلودگی میکروبی از مبدأ را داشته باشند، لذا مطالعه حاضر با هدف تعیین کاهش بار میکروبی دانه‌های مصرف شده در اثر اشعه ماوراء بنفش انجام گرفت. شش نوع دانه آجیلی شامل تخمه آفتابگردان، هندوانه، کدو، مغز گردو، پسته و فندق خام به صورت فله از بازار تهران به طور تصادفی نمونه برداری شدند. آزمایه‌ها مطابق روش استاندارد ملی ایران و ضابطه سازمان غذا و دارو مورد آزمون قرار گرفتند. پس از آن دانه‌های آجیلی آلوده در ضخامت 1، 2 و 3 لایه و زمان­ 5، 10 و 15 دقیقه در کابینت فرابنفش با طول موج 254 نانومتر پرتودهی و پس از آن مورد آزمون­های میکروبی قرار گرفتند. براساس نتایج حاصل، زمان پرتودهی و ضخامت چیدمان دانه­ها بر شمارش کلی میکروبی در مغز پسته، گردو و فندق تاثیر کاملاً معنی­داری داشت (01/0>p). همچنین بر شمارش کلی­فرم مغز پسته، گردو و فندق، تخمه کدو، آفتابگردان و هندوانه و شمارش کپک پسته، گردو و فندق، تخمه آفتابگردان و هندوانه تاثیر کاملاً معنی دار بود (01/0>p). این تاثیر با شدت کمتر بر شمارش کپک برای تخمه کدو تاثیر معنی داری نشان داد (05/0>01/0). بنابراین پرتودهی با اشعه فرابنفش در شرایط بهینه مورد اشاره می­تواند بار آلودگی دانه­های آجیلی را تا حد قابل قبولی کاهش دهد.
کلیدواژه‌ها
اشعه فرابنفش
بارمیکروبی
دانه‌های آجیلی
فرآوری نوین

موضوعات

عنوان مقاله English

Evaluating the Effectiveness of UV Irradiation on Reducing Microbial Load of Some Highly Consumed Seed Nuts

نویسندگان English

Behrouz Akbari-adergani 1
Saba Sadeghi 2
Masoud Homapour 3
Faezeh Shirkhan 4
1 Food and Drug AdministrationMinistry of Health and Medical Education
2 Pharmacy Faculty, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
3 Pharmacy Faculty, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
4 Nutrition and Food Sciences Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
چکیده English

Nut's seeds can be a source of contamination with various types of microorganisms and so some of them are important for public health. Therefore, with regard to household consumption of those type of seeds and their application in food industries, and also due to the fact that some of them are imported from other countries so they may have the possibility of microbial contamination from the source, therefore the purpose of this study was to evaluate the efficacy of UV irradiation in reducing the microbial load of some consumed seed nuts. Six types of beans including sunflower seeds, watermelon, pumpkin, walnut, pistachio, and hazelnut were randomly sampled in bulk from Tehran retail market. Testimonials were tested by methods in the Iranian national standard and food and drug organization standards. Subsequently, infected seeds were irradiated in 1, 2 and 3 layers of thickness and time at 5, 10 and 15 minutes in a UV cabinet with a wavelength of 254 nm and subjected to appropriate microbial tests. According to the results, the irradiation time and thickness were significantly affected by the total microbial count of pistachio, walnut and hazelnut (p<0.01). Also, it has a significant effect on the coliform count of pistachio, walnut, hazelnut seeds, pumpkin seeds, sunflower and watermelon, and the mould count of pistachio, walnuts and hazelnuts, sunflower seeds and a watermelon (p<0.01). It had less significant effect on the number of molds in pumpkin seeds (0.01.

کلیدواژه‌ها English

UV-Radiation
Microbial load
Seed nuts
Modern Processing
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