文章基本信息

标题：The Effect of Various Light Source Illumination Intensity and Storage Period on the B2 Vitamin Losses in Pasteurised Milk
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作者：Tamer Turgut ; Songül Çakmakçı
期刊名称：Gida : Journal of Food
印刷版ISSN：1300-3070
电子版ISSN：1309-6273
出版年度：2003
卷号：28
期号：5
出版社：Association of Food Technology, Turkey
摘要：In this study, to determine the effects of various light sources, illumination intensity in destruction of B₂ vitamin during the storage of pasteurized milk was studied. For this purpose, raw cow milk was pasteurized at 72°C for 15 seconds and then 500 ml milk was filled into pre sterilized glass jars. The pasteurized milk was placed in two different refrigerators (4±1°C), which included different illumination systems, fluorescent and normal light source, in the intensities of 1100, 2400, 5800 lux. As a control group, pasteurized milk sample was stored at the same temperature and dark conditions. The amounts of B₂ vitamin of the milk samples were determined at the 0, 6, 12, 24, 48, 72, 96, 120^th hours of storage period. The experiment was planned as completely randomized factorial experimental design and conducted with six replications. The effect of light source, illumination intensity, light source x illumination intensity interaction, storage period and storage period x illumination intensity interaction on the amount of B₂ vitamin of the experimental milk samples were statistically significant (P< 0.01). B₂ vitamin content of the milk samples stored at dark conditions was higher than those of the samples stored under the fluorescent and normal lights. Additionally, the amount of B₂ vitamin of the milk samples stored under the fluorescent lights was less than that of those stored in normal lights. As illumination intensity increased, the losses of B₂ vitamin increased, and when the storage time extended, the amount of B₂ vitamin generally decreased. In conclusion, it could be suggested that to minimize the vitamin B₂ losses in pasteurized milk, lightproof packaging materials just after production should be used, if it is to be marketed in glass bottles, pasteurized milk should be stored in the conditions of no more than 1100 lux illumination intensity. Also, normal light conditions should be preferred instead of the fluorescent light.