اثر پوشش خوراکی ژلاتین - اسانس نعناع (Mentha spicata) بر خصوصیات میکروبی، شیمیایی و حسی فیله مرغ تازه طی نگهداری در دمای 4 درجه سانتی گراد

نویسندگان
1 دانشجوی کارشناسی ارشد بهداشت و کنترل کیفی مواد غذایی، دانشکده دامپزشکی، دانشگاه شهید چمران اهواز، اهواز، ایران.
2 گروه بهداشت مواد غذایی، دانشکده دامپزشکی، دانشگاه شهید چمران اهواز،اهواز، ایران.
3 گروه بهداشت مواد غذایی، دانشکده دامپزشکی، دانشگاه شهید چمران اهواز، اهواز، ایران.
چکیده
مطالعه حاضر جهت ارزیابی تأثیر پوشش خوراکی ژلاتین 4% حاوی اسانس 2% نعناع برکیفیت گوشت مرغ در دمای یخچال انجام گرفت. نمونه­ها به سه گروه بدون پوشش (کنترل)، پوشش داده شده با ژلاتین و پوشش داده شده با ژلاتین و اسانس نعناع تقسیم شدند. نمونه ها به مدت 21 روز در یخچال (دمای 4 درجه سانتی گراد) نگهداری شده و جهت آزمون­های میکروبی (شمارش باکتری های مزوفیل و سایکروفیل هوازی)، شیمیایی (pH، مقادیر مواد ازته فرار (TVN) و تیوباربیتوریک اسید (TBA)) و حسی (شکل ظاهری، میزان الاستیسیته عضلات، بو و رنگ) مورد ارزیابی قرار گرفتند. نتایج بررسی باکتریایی نشان داد که تیمار ژلاتین و تیمار ژلاتین حاوی اسانس نعناع نسبت به گروه کنترل، اثر معناداری بر به تعویق انداختن روند افزایش بار میکروبی سایکروفیل و مزوفیل داشته است. از نظر شیمیایی نیز تیمار ترکیبی ژلاتین- نعناع مقادیر TBA، TVN و pH کمتری نسبت به دو گروه دیگر در طول نگهداری نشان داد (001/0> P). همچنین از نظر فاکتورهای حسی تیمار ژلاتین و تیمار ژلاتین حاوی اسانس نعناع باعث حفظ فاکتورهای حسی در سطح قابل قبول به مدت 6 روز شدند. بر اساس نتایج مطالعه حاضر، پوشش ژلاتین به تنهایی توانایی لازم جهت افزایش مدت ماندگاری فیله­های مرغ را نداشت، اما پوشش ژلاتین- نعناع ممکن است یک فناوری امیدوارکننده جهت کنترل تغییرات نامطلوب میکروبی، شیمیایی و حسی در نگهداری فیله مرغ باشد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Effect of edible gelatin- mint essential oil (Mentha spicata) coating on microbial, chemical and sensory characteristics of fresh chicken fillet during storage at 4 ℃

نویسندگان English

Zahra Farhadvand 1
Ali Fazlara 2
Maryam Ghaderi Ghahfarokhi 3
Mahdi Pourmahdi broojeni 3
1 M.Sc Graduate Student of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, ShahidChamran University of Ahvaz, Ahvaz,Iran.
2 Department of Food Hygiene, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz,Ahvaz, Iran.
3 Department of Food Hygiene, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
چکیده English

The present study was conducted to evaluate the effect of gelatin edible coating (4%) containing mint (Mentha spicata) essential oil (2%) on quality of chicken fillet during refrigerated storage (4o C). Samples were separated into three groups: uncoated (control), coated with gelatin and coated with gelatin contained mint essential oil (gelatin-mint). Samples were stored at refrigerator temperature for 21 days and microbial count (total aerobic mesophilic and psychrophilic bacterial counts), chemical properties (pH, total volatile nitrogen (TVN) and thiobarbituric acid (TBA)) and sensory characteristics (appearance, muscles elasticity, odor and color) were evaluated in 3 days interval. The results of bacterial analysis showed that coating with gelatin and gelatin-mint had significant effects on delaying the increase trend of psychrophilic and mesophilic bacterial counts as compared to control. Chemically, gelatin-mint treatment showed lower TBA, TVN and pH values ​​than the other two groups during storage (P <0.001). Also, the gelatin and gelatin-mint treatments maintained sensorial factors at acceptable levels for 6 days. Based on the results of the present study, gelatin coating did not have the ability to extend the shelf life of chicken fillets, on the basis of our results, the gelatin- mint coating may be a promising technology for the control of undesirable microbial, chemical, and sensorial changes during chicken fillet storage.

کلیدواژه‌ها English

Mint essential oil
Gelatin
Coating
chicken fillet
shelf life
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