نتایج جستجو برای: tba and pv
تعداد نتایج: 16832789 فیلتر نتایج به سال:
This study aimed to investigate the oxidation profile of wheat germ oil extracted from raw during stabilization with microwave (MW) treatment, and kinetics parameters (free fatty acids (FFA), peroxide value (PV), thiobarbituric acid (TBA), α-tocopherol, lipase (LA) lipoxygenase (LOX) enzymes activities) under different storage conditions. For stabilizing germ, MW was treated at 700 W for three ...
background: due to high content of unsaturated fatty acids, trout is susceptible to oxidative spoilage. in this study, the effects of thymus vulgaris essential oil (eo) and extract on oxidative stability of cooked rainbow trout fillet during four months frozen storage period were investigated. methods: three groups of fish fillets were treated with thyme eo and three other groups were treated w...
changes in the fatty acid composition and biochemical indices of mackerel (which has a substantial lipid content) and shark (which has negligible lipid content) fillets stored at - 18°c for up to six months were measured. lipid content was measured (6.35% and 1.38%) in mackerel and shark, respectively; however it decreased during frozen storage in both fish species. in analysis of fatty acids t...
یکی از روش های حفظ و نگهداری محصولات شیلاتی استفاده از نگهدارنده های طبیعی علی الخصوص عصاره های گیاهی می باشد. در این تحقیق اثر عصاره آبی سماق ایرانی روی زمان ماندگاری فیله کپور نقره ای هنگام نگهداری در دمای 4 درجه سانتی گراد مورد بررسی قرار گرفت. ماهی ها پس از فیله شدن و آماده سازی اولیه، در عصاره های 1، 5/2 و 5 درصد سماق غوطه ور و بسته بندی شدند و در یخچال (c?4) قرار گرفتند. فراسنجه های شیمیا...
one of the simplest methods for short-term handling and storage of fish is the refrigeration in combination with dip treatments. this study was conducted to determine the effect of pre-storage α-tocopherol acetate dipping treatments on lipid stability of refrigerated rainbow trout fillets. trout fillets were dipped in α-tocopherol acetate solutions (200 and 500 mg kg-1 flesh) and subsequently s...
the use of natural extracts as one of good antioxidant source is increasing to improve fish quality. the present study aims at investigating antioxidant effect of orange peel extract on the quality of common carp fillet during refrigerated storage (4°c). fish fillets were treated by 0, 1 and 5 % concentration of orange peel extract, packed and then stored in refrigerator. chemical parameters (p...
Silver carp fillets were treated with liposomal encapsulated and unencapsulated pomegranate peel extract at 0.5 and 1% w/w to evaluate the effect of the extracts on the shelf life of the fillets during 15 days of refrigerated storage. Quality changes of the samples were investigated in terms of total volatile basic nitrogen (TVB-N), peroxide value (PV), thiobarbituric acid (TBA) and microbial c...
this study evaluated the antibacterial and antioxidant effects of tamarind water solution on shelf life of silver carp ( hypophthalmicthys molitrix ) fillet during refrigerator storage. treatments of this study were unwashed samples (control), and samples washed with 1% and 2% tamarind water solution. microbial, physicochemical and sensory analysis including total viable count (tvc), peroxide v...
One of the simplest methods for short-term handling and storage of fish is the refrigeration in combination with dip treatments. This study was conducted to determine the effect of pre-storage α-tocopherol acetate dipping treatments on lipid stability of refrigerated rainbow trout fillets. Trout fillets were dipped in α-tocopherol acetate solutions (200 and 500 mg kg-1 flesh) and subsequently s...
Smoking is one of the efforts to maintain quality smoked fish. Phenol compounds in smoke can act as natural antioxidants inhibit lipid oxidation. Milkfish have a high content after protein, which undergo oxidation during processing and storage. The aim this study was observe effect antioxidant activity on different smoking methods storage time for 28 days at freezing temperature milkfish. Corn ...
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