Effect of Phycoerythrin on Antimicrobial Activity and Shelf-life Extension of the Nile Tilapia (Oreochromis niloticus) at Refrigerator Temperature

سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 30

فایل این مقاله در 11 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

JR_ARCHRAZI-78-6_017

تاریخ نمایه سازی: 30 بهمن 1402

چکیده مقاله:

The present study was performed to evaluate the effect of phycoerythrin (PE) treatment extracted from Nostoc sp. on the shelf-life extension of the Nile Tilapia (Oreochromis niloticus) fillet at ۴°C and ۸°C. After extraction and purification of pigment in BG-۱۱۰ medium, the pigment PE was extracted and purified with ۵۶% ammonium sulfate followed by dialysis. After that, the effect of pigment on Escherichia coli and Staphylococcus aureus were investigated. The fillet samples were immersed in pigment solution, and their physicochemical, microbiological and sensory properties were examined. The results showed that the concentration and purity of the pigments increased after the dialysis. The results from performed chemical tests and total number of living mesophilic bacteria, psychrotrophic bacteria, Staphylococcus aureus coagulase positive, and coliform bacteria of the samples compared to the blank sample showed that sample treated with algae extracts were able to control the increase in these parameters. In these tests, the highest levels belonged to Nile Tilapia fillet sample Nile Tilapia fillet coated with PE solution at a temperature ۸°C and the lowest amount was observed with fillet coated with PE solution at a temperature of ۴˚C (P≤۰.۰۵). The results of sensory evaluation showed that the highest score of taste, texture, color, and total acceptance were observed for Nile Tilapia fillet coated with PE solution at temperature ۸°C. In conclusion, the extract pigments from Nostoc sp. has strong antimicrobial activity and can maintain the quality parameters for controlling of spoilage bacteria and extend the shelf-life of Oreochromis niloticus.

نویسندگان

B Nowruzi

Department of Biotechnology, Faculty of Converging Sciences and Technologies, Islamic Azad University, Science and Research Branch, Tehran, Iran

S Jafari Porzani

Department of Biotechnology, Faculty of Converging Sciences and Technologies, Islamic Azad University, Science and Research Branch, Tehran, Iran

A Anvar

Department of Food Hygiene, Science and Research Branch, Islamic Azad University, Tehran, Iran