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Oxidative and colour stability of salted sour cream dairy spread comparedto salted sweet cream dairy spread

机译:咸味酸奶油奶酱的氧化和颜色稳定性

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摘要

Salted sweet cream dairy spread was found to have better oxidative stability compared to salted sour cream dairy spread when evaluated by peroxide value and the Rancimat method during storage at -18 degrees C, 5 degrees C and 20 degrees C for 10 weeks. Sensory evaluation showed an increase in the intensity of the attributes oily and rancid for samples stored at 20 OC, irrespectively of type of spread. Colour changes measured as tristimulis L*, a*, b* values, showed that the storage temperature (18 degrees C, 5 degrees C or 20 degrees C) was most important as the product surface was found darker and more yellow and greenish while no time dependent change in colour could be observed during the storage period.
机译:当在18摄氏度,5摄氏度和20摄氏度的温度下存放10周时,通过过氧化物值和Rancimat方法评估时,发现咸甜奶油乳品涂抹酱与咸酸奶油乳品涂抹酱相比具有更好的氧化稳定性。感官评估表明,与涂抹类型无关,对于在20℃下储存的样品,油性和酸败性的强度增强。以三刺激L *,a *,b *值测量的颜色变化表明,存储温度(18摄氏度,5摄氏度或20摄氏度)最重要,因为发现产品表面更暗,更黄和绿色,而没有发现在存储期间可以观察到颜色随时间变化。

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