سامانه همایش های موسسه پژوهشی علوم و صنایع غذایی

صفحه اصلی / سومین همایش ملی پژوهش های کاربردی امنیت غذایی: فرآوری، ایمنی و سلامت

Investigating the Effect of UV Treatment on the Microbial Profile and Quality Stability of Natural Mineral Water During Storage

نویسندگان :

Amir Iranshahi¹ ALI ZAMANPOUR BOROJUNY²

1- دانشگاه علوم کشاورزی و منابع طبیعی خوزستان 2- دانشگاه علوم کشاورزی و منابع طبیعی ساری

کلمات کلیدی :

فرآیند UV،پروفایل میکروبی آب معدنی،شاخص‌های آلودگی،کیفیت میکروبیولوژیکی،پایداری کیفی،UV treatment،mineral water microbial profile،fecal indicators،microbiological quality،storage stability

چکیده :

This study investigated the microbiological stability of commercially bottled mineral water compared to untreated raw spring water under controlled storage conditions (5°C and 25°C) over a 30-day period. Microbiological analyses were performed at 10-day intervals using selective culture media (VRB, SPS, LSB, Cetrimide Agar, KF) to detect indicator organisms including coliforms, Clostridium perfringens, presumptive Escherichia coli, Pseudomonas aeruginosa, and enterococci. The UV-sterilized bottled water exhibited no detectable microbial growth (0 CFU/1.5L) across all media, temperatures, and time points, confirming the efficacy of the industrial disinfection and aseptic packaging process. In contrast, raw spring water demonstrated a baseline microbial load at day 0, with significant proliferation observed over time, particularly at 25°C. Notably, counts of P. aeruginosa and enterococci increased by up to 300% under ambient storage conditions. pH remained stable in both samples (range: 7.51–7.71), indicating that microbial dynamics were not influenced by chemical shifts. These findings underscore the critical importance of validated disinfection protocols and temperature-controlled storage in ensuring the microbiological safety of bottled water products, and highlight the inherent risks associated with the consumption of untreated spring water without immediate use or proper preservation (Meyer et al., 2020; WHO, 2021).