Hochreutener Mirjam, Zweifel Claudio, Corti Sabrina, Stephan Roger
Institute for Food Safety and Hygiene, Vetsuisse Faculty University of Zurich, Zurich, Switzerland.
Ital J Food Saf. 2017 Sep 28;6(3):6864. doi: 10.4081/ijfs.2017.6864. eCollection 2017 Aug 16.
To assess the antimicrobial effect of a commercial steam-vacuuming system newly implemented after slaughtering, 105 cattle carcasses were examined for total viable counts (TVC) at four different areas. Before steam vacuuming, mean TVC of the excision samples were comparable at the perineal area and brisket (3.0-3.1 log CFU cm) or the hind leg and shoulder (2.6-2.7 log CFU cm). Steam vacuuming reduced mean TVC by 0.9, 0.7, 0.6, and 0.4 log CFU cm at the perineal area, hind leg, shoulder, and brisket, respectively. With regard to the distribution of counts, steam vacuuming increased the proportion of TVC results <3.0 log CFU cm from 74.8% (62.9-87.6% at carcass areas) to 86.7% (71.4-97.1% at carcass areas). Thus, steam vacuuming after slaughtering might be useful for the reduction of contamination in designated carcass areas, but the effect must not be overestimated and decontamination treatments always must be seen part of an integral food safety system.
为评估屠宰后新实施的商用蒸汽真空系统的抗菌效果,对105头牛的胴体在四个不同部位进行了总活菌数(TVC)检测。在蒸汽真空处理前,会阴区和胸部切除样本的平均TVC相当(3.0 - 3.1 log CFU/cm),后腿和肩部的平均TVC也相当(2.6 - 2.7 log CFU/cm)。蒸汽真空处理后,会阴区、后腿、肩部和胸部的平均TVC分别降低了0.9、0.7、0.6和0.4 log CFU/cm。关于菌数分布,蒸汽真空处理使TVC结果<3.0 log CFU/cm的比例从74.8%(胴体各部位为62.9 - 87.6%)增加到86.7%(胴体各部位为71.4 - 97.1%)。因此,屠宰后进行蒸汽真空处理可能有助于减少胴体指定部位的污染,但这种效果不应被高估,去污处理始终应被视为完整食品安全体系的一部分。