بررسی اثر پوشش خوراکی کامپوزیتی پروتئین تغلیظ شده شیر- پکتین تقویت شده با کلسیم کلرید و اسانس سیاه دانه بر ویژگی‌های فیزیکو شیمیایی، آنتی‌اکسیدانی و میکروبی توت‌‌فرنگی طى انبارمانى

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دکتری تخصصی بیوتکنولوژی مواد غذایی، گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه تبریز، تبریز

2 دانشکده کشاورزی و منابع طبیعی دانشگاه ارومیه

3 دکتری تخصصی، گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران

چکیده

هدف از این مطالعه افزایش ماندگاری و حفظ کیفیت میوه توت­فرنگی با استفاده از پوشش خوراکی کامپوزیتی پروتئین تغلیظ شده
شیر- پکتین تقویت شده با کلسیم کلرید و اسانس سیاه­دانه طی زمان 10 روز انبارمانی در دمای 1±4 درجه سلسیوس بود. تأثیر پوشش خوراکی بر پایه پروتئین تغلیظ شده شیر (4/6 و 8%)، پکتین (0/ 2 و 4%)، کلسیم کلرید (1/ 2 و 3%)، گلیسرول (2/ 3 و 4%) و اسانس سیاه دانه (2%) بررسی شد. پس از بهینه­سازی کیفیت میکروبی، خصوصیات فیزیکو شیمیایی، آنتی اکسیدانی، محتوای آنتوسیانین و سفتی بافت توت­فرنگی­های پوشش داده شده، در روزهای 5 و 10 پس از انبارمانی با نمونه­های کنترل مقایسه شدند. تمام ویژگی­های کیفی مورد مطالعه در نمونه پوشش داده شده با نمونه­های کنترل تفاوت معنی دار داشت (05/0p<). نتایج نشان دادند که این پوشش خوراکی به‌دلیل کاهش پوسیدگی، کیفیت توت­فرنگی­ها را  بهتر از نمونه­های شاهد (بدون پوشش) حفظ کرد.  

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The Effect of Milk-Pectin Protein Concentrate Composite Edible Coating Reinforced by Calcium Chloride and Nigella Sativa L. Essential Oil on the Physicochemical, Antioxidant and Microbial Characteristics of Strawberries During Storage

نویسندگان [English]

  • Saber Amiri 1
  • Mahmoud Rezazadehbari 2
  • Laya Rezazad Bari 3
1 PhD. of Food Biotechnology, Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, Tabriz
2 Professor, Department of Food Science and Technology, Faculty of Agriculture and Natural Resources, Urmia University, Urmia, Iran
3 PhD Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
چکیده [English]

The aim of this study is to increase the shelf life and quality of strawberries, using a composite coating of concentrated milk protein-pectin reinforced with calcium chloride and Nigella sativa L. essential oil during 10 days of storage at 4±1°C. The effect of edible coating based on condensed milk protein (4, 6 and 8%), pectin (0, 2 and 4%), calcium chloride (1, 2 and 3%), glycerol (2, 3 and 4%) and Nigella sativa L. essential oil (2%) is investigated. After optimizing the microbial quality of coated strawberries, their physicochemical properties, antioxidant activity, anthocyanin content, and tissue hardness were compared with the control samples at 5 and 10 days after storage. All the studied qualitative characteristics of the coated samples were significantly different from the control samples (p <0.05). The results showed that this edible coating maintains the quality of strawberries in comparison to the uncoated control samples due to rot reduction. 

کلیدواژه‌ها [English]

  • Edible Coating
  • Nigella Sativa L Essential oil
  • Strawberry
  • Storage
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