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全南地方의 生乳와 市乳의 品質 및 衛生的 管理에 對한 調査硏究
林鳳鎬,趙成萬,金宇權,李載洪,崔洙亨,朴南鏞 全南大學校 農漁村開發硏究所 1976 農業科學技術硏究 Vol.11 No.-
A survey of sanitary and qualitative control of raw and market milk in Chonnam district was carried out in quest of the grade of propriety by the legal standards. For this study 149 raw milk samples, which were taken from the pastures in Chonnarn district, were collected from the milk plants and l61 market milk samples were collected from the shops in Gwang-3u city- In order to survey the status of control of raw milk in every pasture, the pastures were divided into three groups. A group was the pasture raising more than 20 cows; B group, 10 ~ 20 cows; C group, less 10 cows. The results obtained were as follows: 1. The mean value of specific gravity was 1.029, acidity was 0.14 per cent and fat content was 3.2 per cent in i49 raw milk samples, and 1.029, 0.13 per cent and 3. 1 per cent in 161 market milk respectively. The passing rates by legal standards of specific gravity, acidity and fat content in raw milk were 78.7 per cent, 96.7 per cent and 75.3 per cent, and in market milk 66.5 per cent, 97.5 per cent and 66.5 per cent respectively. The fact that except for acidity the passing rates of market milk in specific gravity and fat content were less than those of raw milk indicated unfit processing for market milk by the milk plants. 2. The acceptable level for bacterial numbers in raw milk by legal standard were 65.1 per cent by standard plate count and 69.8 per cent by direct microscopic count. The acceptable level by legal standards for bacterial number in raw milk among the pastures were 62.5 per cent in A group, 65.2 per cent in B group, 64.8 per cent in C group by standard plate count, and 68.8 per cent, 71.7 per cent and 71.8 per cent by direct microscopic count respectively. As mentioned above the sanitary and qualitative control and treatment of raw and market milk were yet unfit to date in Chonnam district, but it shall be improved gradually in the future.