摘要
豬肉絛蟲在我國分佈甚廣,南北各地均有發现。其感染來源是由於人食入未熟含有囊尾蚴之豬肉而得。因此豬之囊尾蚴感染,爲人體豬肉絛蟲病流行之主要因素;根據上篗缊鲆荒陜戎y計,囊尾蚴病豬平均發病率爲0.2357%,天津爲2.5%,青島市屠塲1954年宰豬總數爲580971頭,囊尾蚴病豬數爲2728頭,其平均發病率爲0.469%。豬囊尾蚴感染率之高低與人類豬肉絛蟲病的感染有着密切關系。豬肉是我國人民主要的肉食(除個別民族外)。在食用方法上雖各地不同,但在食肉習慣方面多以鮮嫩爲宜,這就很難保證完全殺死豬肉中的囊尾蚴,也就不免有感染豬肉絛蟲病的危險。關於豬囊尾蚴耐熱力的研究,國內學者尚未有過研究報告罁庥涊dBelding氏。
That thorough cooking of pork will destroy all cysticerci of Taenia solium is an establi- shed fact; however, data concerning the exact tomperature and time required to kill this lar- val parasite are not in good agreement. The object of the present study is to obtain specific information on the time and temperature relations which are lethal to this parasite. A series of experiments was carried out to detemine the thermal death point of the pork cysticerci by gradually exposing them to various temperatures; they were then tested for vi- ability by the following criteria: (1) the ability of cysticerci to evaginate in warm bile solu- tion, and (2) the activity of the flame cells. The cysticerci used in the experiments were obtained from the seventeen naturally infected pigs supplied by the Tsingtao Slaughter House. The interval between the slaughter of the animals and the tests ranged from 5 to 36 hours. All cysticerci before using were tested for viability, and 3-13 cysticerci from each lot served as controls. The results showed that the decapsulated cysticerci heated at 51℃ for ten minutes, and 54℃ for one minute were killed, as shown by the viability tests in which they did not ev- aginate in bile solution and the flame cells did not show any activity. The cysticerci could survive at 48℃ for fifteen minutes. In order to test the viability of the cysticerci encapsulated in the meat, pieces of muscle tissue varying from 22. 5-36. 5 grams were tested. The results indicated that when heated at 54℃ for five minutes all cysticerci recovered from the muscle were killed. Cysticerci in 140-gram flesh would need ten minutes heating at boiling tempe- rature to kill them.
出处
《山东大学学报（哲学社会科学版）》
1955年第1期166-174,203-204,共11页
Journal of Shandong University(Philosophy and Social Sciences)
