Lillard H S
United States Department of Agriculture, Agricultural Research Service, Richard B. Russell Agricultural Research Center, P.O. Box 5677, Athens, Georgia 30613.
J Food Prot. 1986 Jun;49(6):449-454. doi: 10.4315/0362-028X-49.6.449.
Poultry skin was immersed in a saline solution (0.85%) containing 10 Salmonella typhimurium /ml. After 0.25 min, 95% of the water uptake was in a surface film and 5% in the skin. After immersion for 30 and 60 min, a significant increase in total water uptake occurred at each immersion time. A significant increase in the surface film occurred after 30 min of immersion, but not from 30 to 60 min. After 0.25 min of immersion, 94% of bacterial cells was entrapped in the water film and 6% was on the skin. As immersion time increased, the percentage of bacteria in the surface film decreased, whereas the percentage on the skin increased. After 60 min of immersion, about 39% of bacterial cells was in the surface film and 61% was on the skin. These data indicate a possible transfer of water and bacteria from surface film to skin during prolonged water immersion. Preventing the formation of the surface film by altering surface tension may reduce carcass contamination during immersion processes.
将家禽皮浸入含有每毫升10个鼠伤寒沙门氏菌的盐溶液（0.85%）中。0.25分钟后，95%的吸水量存在于表面膜中，5%存在于皮肤中。浸泡30分钟和60分钟后，每次浸泡时总吸水量都显著增加。浸泡30分钟后表面膜显著增加，但从30分钟到60分钟没有增加。浸泡0.25分钟后，94%的细菌细胞被困在水膜中，6%在皮肤上。随着浸泡时间的增加，表面膜中细菌的百分比下降，而皮肤上的百分比增加。浸泡60分钟后，约39%的细菌细胞在表面膜中，61%在皮肤上。这些数据表明，在长时间水浸过程中，水和细菌可能从表面膜转移到皮肤。通过改变表面张力防止表面膜的形成可能会减少浸泡过程中胴体的污染。
