نتایج جستجو برای: total volatile bases nitrogen tvb
تعداد نتایج: 998166 فیلتر نتایج به سال:
Quality assessment of finfish fillets during storage is important to be able to predict the shelf life of the fresh product during distribution. Microbial, chemical (pH, TMA, and TVB-N), and sensory (Quality index assessment QIA, Torry scheme) changes in vacuum-packaged blue-spotted emperor (Lethrinus sp), saddletail (Lutjanus malabaricus), crimson snapper (Lutjanus erythropterus), barramundi (...
meat products, especially fish meat, are very susceptible to lipid oxidation and microbial spoilage. in this study, first, gas chromatography mass spectrometry (gc-ms) analysis of zataria multiflora essential oil (zeo) components was done and then two concentrations of zeo, (1% and 2%) and two concentrations of grape seed extract (gse), (0.5% and 1%) were used in carboxymethyl cellulose coating...
The study investigated the effect of 10% aqueous extracts ginger, garlic and onion on quality shelf life frozen chevon pork as reflected by changes in values 2-thiobartituric acid reactive substances (2-TBARS) total volatile basic nitrogen (TVB-N) over a 14 day storage under conditions. pH, 2-TBARS TVB-N were measured from at -20°C after days. resulted low pH 5.63, 5.79 5.67 for mixed...
Cod fillets (Gadus morhua) were packed under modified atmospheres, with four different gas compositions (60% CO2-10% O2-30% N2, 60% CO2-20% O2-20% N2, 60% CO2-30% O2-10% N2, 60% CO2-40% O2), and stored at 6 degrees C. Plate counts were carried out after 3, 4, 5, 6 and 7 days, to follow the growth of aerobic and anaerobic bacteria, lactic acid bacteria, H2S-producing bacteria and Enterobacteriac...
Keeping food quality among consumers is of high importance. In this study in order to maintain and improve the quality of fish meat, effect of pretreatment with polyphosphates have profound effects on the functional properties of the food products. Experiments were carried out to avoid drip during storage of Tilapia (Oreochromis niloticus)fish under modified atmosphere packaging (MAP).The resul...
This study aimed at determining the effect of chitosan coating on shelf life extension of salmon ( Salmo salar ) fillets. The success of edible coatings depends highly on their effective wetting capacity of the surfaces on which they are applied. In this context in a first stage the surface properties of salmon fillets and the wetting capacity of the coatings on fish were evaluated. In terms of...
Quality and shelf-life of whole and filleted Coryphaena hippurus, stored with modified atmosphere packaging (MAP) and natural antioxidants from halophytes (HAL), were investigated. Fillets were divided into control, simply sealed in trays; MAP, preserved by modified atmosphere (45% CO2, 50% N2, 5% O2); and MAP-HAL, pretreated with antioxidants and preserved by MAP. Whole and filleted fish were ...
The effect of adding 0.05% natural herb extracts obtained from rosemary (Rosmarinus officinalis), thyme (Thymbra spicata), and basil (Ocimum basilicum L.) on mackerel balls during 10 months frozen storage (-18oC) were investigated concerning sensory (raw cooked), biochemical (PV- peroxide value, FFA- free fatty acids, TVB-N -total volatile basic nitrogen, TBA- thiobarbituric acid pH) microbiolo...
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...
The purpose of this study was to investigate the therapeutic effects of propolis on biochemical and microbiological parameters in muscle tissues of carp (Cyprinus carpio, Linnaeus 1758) exposed to arsenic. A sublethal concentration of arsenic (0.01 ppm) and/or 0.01 ppm propolis were administered to fish for seven days. Biochemical parameters [pH, lactic acid, total volatile basic nitrogen (TVB-...
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