Wijnker J J, Haas B, Berends B R
Institute for Risk Assessment Sciences, Division Veterinary Public Health, P.O. Box 80.175 NL-3508 TD, University of Utrecht, The Netherlands.
Int J Food Microbiol. 2007 Apr 10;115(2):214-9. doi: 10.1016/j.ijfoodmicro.2006.10.030. Epub 2006 Dec 28.
Intestines are used for the production of natural casings as edible sausage containers. Derived from animals (pigs and sheep) experimentally infected with FMDV (initial dosage 10(7.3) PFU/ml, strain O(1Kaufbeuren)), these natural casings were treated with sodium chloride or a phosphate salts/sodium chloride mixture and the residual FMDV titres measured. After storage at about 20 degrees C, no remaining infectivity was found after either treatment, whereas casings stored at 4 degrees C still contained infectivity. Storage of salted casings at about 20 degrees C for 30 days is already part of the Standard Operating Procedures (included in HACCP) of the international casing industry and can therefore be considered as a protective measure for the international trade in natural casings.
肠被用于生产作为可食用香肠肠衣的天然肠衣。这些天然肠衣源自实验感染口蹄疫病毒（初始剂量10(7.3) PFU/ml，O(1考夫博伊伦)株）的动物（猪和羊），用氯化钠或磷酸盐/氯化钠混合物处理后，测量残留的口蹄疫病毒滴度。在约20摄氏度储存后，两种处理后均未发现残留传染性，而在4摄氏度储存的肠衣仍有传染性。将盐渍肠衣在约20摄氏度储存30天已是国际肠衣行业标准操作规程（包括在HACCP中）的一部分，因此可被视为天然肠衣国际贸易的一项保护措施。
