In this study, a medium voltage electrical stimulation (ES) system with three parameter combinations (A: 1A, 1.55 ms pulse width, 27 s; B: 0.55A, 1 ms pulse width, 34 s; C: 0.55A, 2 ms pulse width, 20s) were applied to beef carcases (n = 24; 319 ± 26.4 kg), in the context of a very slow pH decline rate in the abattoir. All the ES combinations significantly accelerated the rate of pH decline (reflected by [email protected] 6.0, i.e. temperature when pH drops to 6.0), resulting in a tenderness improvement even after 14 days ageing compared to the controls. Sarcomere length was not different between treatments and controls, and it was not a contributor to the tenderness improvement, instead, physical disruption revealed by transmission electron microscopic images may have led to the improvement. Retail colour was significantly improved by either combination B or C after 7 days of ageing. Combination B shows the most promise for commercial application, however, verification on more animals is required before commercial adoption.

在本研究中，具有三个参数组合的中压电刺激（ES）系统（A：1A，1.55 ms脉冲宽度，27 s; B：0.55A，1 ms脉冲宽度，34 s; C：0.55A，2 ms脉冲宽度为20s）应用于牛屠体（n = 24; 319±26.4 kg），因为屠宰场的pH下降速度非常缓慢。所有ES组合均显着加快了pH下降的速度（反映为[电子邮件保护] 6.0，即pH下降至6.0时的温度），与对照组相比，即使老化14天后，其嫩度也得到改善。肌节长度在治疗和对照组之间没有区别，并且不是导致压痛改善的原因，相反，透射电子显微镜图像显示的物理破坏可能导致了压痛的改善。老化7天后，组合B或C可显着改善零售颜色。组合B表示最有可能用于商业应用，但是，在商业采用之前，需要对更多的动物进行验证。