Nasser Sedaghat; Nafiseh Vahedi
Abstract
In this study, quality of white button mushrooms (Agaricus bisporus) treated by water and citric acid was evaluated during storage at 2 temperatures (room temperature and 4°C). The effect of modified atmosphere packaging (MAP, by 4±1% CO2, 6±1% O2 and the remaining N2) with or without ...
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In this study, quality of white button mushrooms (Agaricus bisporus) treated by water and citric acid was evaluated during storage at 2 temperatures (room temperature and 4°C). The effect of modified atmosphere packaging (MAP, by 4±1% CO2, 6±1% O2 and the remaining N2) with or without water absorbent (silicagel) was also evaluated. Samples were assessed for their organoleptic properties (texture, color and spoilage), colorimetery and respiration rate during 12 days of storage. Results showed that among all treatments, water treated samples packaged with MAP method contained silicagel sachet and also stored at refrigerator obtained the most organoleptis scores. This sample retained the optimum level of inter packaging gas composition and finally the best storage time was determined as 8 days.
Nafiseh Vahedi; Mostafa Mazaheri Tehrani; Seyed Mohammad Ali Razavi; Rassoul Kadkhodaee
Abstract
Low-fat butter is water in oil emulsion comprising a continuous fat phase including butter, emulsifiers and colorants and also a dispersed aqueous phase including water, stabilizers and proteins. In this research, by using protein components especially full-fat soy flour, a product were produced which ...
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Low-fat butter is water in oil emulsion comprising a continuous fat phase including butter, emulsifiers and colorants and also a dispersed aqueous phase including water, stabilizers and proteins. In this research, by using protein components especially full-fat soy flour, a product were produced which has extreme similarity to ordinary butter and also has good organoleptic properties. Water : butter ratio, soy flour : sodium caseinate ratio and emulsifier content were the designed factors and their effects on sensory properties of low-fat butter such as softness, spreadability, crumbling, hardness, adhesiveness, cohesiveness, melting rate, mouth coating, gumminess, butter flavor, soy flavor and finally overall acceptance were evaluated. The Central Composite Design (CCD) and Response Surface Methodology (RSM) were employed as experimental design and statistical analysis. Based on final results, the optimum formulation for low-fat butter were: water : butter ratio as 1.03 (50% water and 48.5% butter), soy flour : sodium caseinate as 1.57 (5% soy flour and 3.2% sodium caseinate) and 0.66% emulsifier. Apart from good nutritional effects of final product due to high protein content and lower fat content, that was spreadable at low temperatures and also has plastic characteristics of butter at ambient condition.
