نوع مقاله : مقاله کامل علمی - پژوهشی
نویسندگان
1 فرآوری محصولات شیلاتی، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران
2 گروه فرآوری محصولات شیلاتی، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران
3 گروه فراوری محصولات شیلاتی، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگانف گرگان، ایران
4 گروه علوم و صنایع غذایی، دانشکده علوم و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this study, a functional supplement powder containing marine bioactive compounds (fish protein hydrolysate, fish oil and shrimp lipid extract) was prepared using encapsulation technique of nanoliposomes. The prepared nanoliposomes were coated with whey protein (WPC) and chitosan (CS) as mono/bilayer and composite, then dried by a freeze drier for 72 h. Analysis of proximate compounds, solubility, primary oxidation compounds and color evaluation of the treatments were investigated during 0, 1, 2, and 3 months of storage at 4 ◦C. According to the results, the type of coating, the storage time and the moisture level showed a significant effect on the physicochemical properties and oxidative stability of the treatments (P < 0.05). With increasing storage time, the amount of ash, moisture, solubility, primary oxidation compounds and brightness index of the treatments had a significant increase, but the amount of protein, fat and redness index of the treatments had a significant decrease (P < 0.05). Chitosan monolayer treatment and bilayer (WPC/CS) treatments showed the highest and lowest amount of changes in physicochemical properties and oxidative stability, respectively. Therefore, bilayer treatments had better protection than other treatments. According to the results, the presence of WPC as a wall compound had a favorable effect on the physicochemical properties of the treatments, while the presence of chitosan in combination with WPC as bilayers had a protective effect on the core materials and the oxidative stability of the treatments during storage time. Therefore, encapsulation of marine bioactive compounds in liposomal carriers and coating by whey protein as a mono/bilayer could be a useful approach to protect sensitive compounds in food products or as a nutritional supplement powder during storage.
کلیدواژهها [English]