Pre‐chill broiler drumsticks were exposed to ultrasonic energy in water at 25 and 40°C for 15 and 30 min to study the effect on skin microbial counts. Aerobic plate counts (APC) after 0, 7, and 14 days at 4°C indicated no significant effects (p>0.05) due to ultrasonication. In another experiment, post‐chill broiler drumsticks were treated with ultrasonic energy in 1% lactic acid at pH 2 and 4 for 0.5, 2, and 3.5 min. After 0 and 10 days at 4°C there was no significant effect (p>0.05) of ultrasonication on APC.
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SAMS et al. (1991) studied this question.