نتایج جستجو برای: total volatile basic nitrogen
تعداد نتایج: 1188225 فیلتر نتایج به سال:
The effect of feeding chopped and unchopped groundnut haulm (Harawa) on nutrient intake, metabolism utilization was determined in 24 (12 each male female) growing Yankasa lambs. Feeding harawa significantly (P 0.05) Increased feed the digestibility nutrients liveweight gains. It also had an appreciable nitrogen retention production total rumen nitrogen, ammonia-nitrogen volatile fatty acids. ...
The by-product from tuna processing is a potential source of edible protein. Therefore, it is very important to extract protein from such raw materials for human food. In this study the optimum pH for protein extraction from tuna by-products was optimized by using isoelectric solubilization and precipitation processes. The Response Surface Methodology (RSM) and the single factor model were used...
A nitrogen deficiency always causes bog bilberry syrup wine to have a poor sensory feature. This study investigated the effect of nitrogen source addition on volatile compounds during bog bilberry syrup wine fermentation. The syrup was supplemented with 60, 90, 120 or 150 mg/L dibasic ammonium phosphate (DAP) before fermentation. Results showed that an increase of DAP amounts accelerated fermen...
Background: In recent years, there has been an increasing interest in using food additives from natural sources to improve taste and also extend shelf life of semi-preserved food. The aim of this paper was to examine chemical and microbiological changes promoted by a traditional marinating process in rainbow trout fillets during frozen storage. Methods: Fish fillets were immersed in traditio...
all of the food products are required to be packaged due to hygienic regard, storage, suitable transportation and preservation of quality and vacuum packaging is one of the prevention methods of spoilage. hence in this study, some of the quality factores changes of rutilus frissi kutum fillets storaged in vacuum and air packages were examined during 18 days in ice alike total volatile base-nitr...
This study was carried out to determine the effects of tomato powder (TP) on cooked pork patties during storage at 10±1°C in the dark. The total phenolic and flavonoid contents of TP extract were 26.22 mg gallic acid/100 g and 3.52 mg quercetin/100 g, respectively. The extract of TP showed a potential antioxidant activity in the DPPH radical-scavenging assay (EC50 = 16.76 μg/mL). Pork patties w...
امروزه اهمیت نگهداری و عرضه ماهی تازه با توجه به علاقه مصرف کنندگان به ماهی تازه نسبت به منجمد روز به روز بیشتر میشود. در این میان تعیین مدت زمان ماندگاری ماهی، جهت تعیین زمان مصرف آن، به دلیل فساد پذیری بالای ماهی اهمیت مییابد. این پژوهش به منظور بررسی روند تغییرات فسادی و تعیین زمان ماندگاری ماهی قزلآلای رنگینکمان (Oncorhynchus mykiss) طی نگهداری در دمای یخچال (°C4) صورت پذیرفت. بدین منظو...
In this study, changes in some quality parameters of fish chips produced from sand smelt (Atherina boyeri, RISSO 1810) during storage period (at -18 o C for 6 months) were determined. The difference between the amount of moisture, crude protein, crude fat and crude ash components of raw fish in fish chips was significant (P<0.05). Pre-frying process resulted in a decrease in all fatty acid c...
Tuna processing by-product is estimated at more than 100,000 metric tonnes annually in Iran, which could be a potential source of edible protein in human food. Hence, recovering proteins from tuna by-products is a big achievement in the seafood industry. In this work tuna protein isolates (TPI) were extracted from dark/ red meat using the isoelectric solubilization/ precipitation method. Oxidat...
This study was done to evaluate the antimicrobial and antioxidant effects of nisin Z (0.02 %) and sodium benzoate (1.5 and 2.5 %) in vacuum packed Caspian Kutum (Rutilus frisii) fillet stored at 4°C. Microbial changes [aerobic plate counts (APC), psychrotrophic counts (PTC) and lactic acid bacteria] and chemical indices [peroxide value and total volatile basic nitrogen (TVB-N)] were determined ...
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