. 2021 May 4;74:105582. doi: 10.1016/j.ultsonch.2021.105582

Table 1.

Effects of different ultrasound power and treatment time on the carbonyl content, total and reactive sulfhydryl (SH) content of pork myofibrillar proteins.

	Treat time (min)	Ultrasound power (W)				SE²	P-Values¹
	Treat time (min)	0	100	300	500		Power	Time	Time × Power
Carbonyl group (nmol mg/ protein)	0	0.19^ay	0.19^az	0.19^az	0.20^az	0.067	<0.001	<0.001	0.0001
	60	0.27^cx	0.43^by	0.51^aby	0.56^ay
	120	0.32^dx	0.56^cx	0.66^bx	0.77^ax
Total SH content (nmol /mg protein)	0	84.72^ax	84.45^ax	84.83^ax	84.84^ax	2.26	<0.001	<0.001	0.0102
	60	82.08^ay	79.73^ay	75.74^by	73.65^by
	120	80.17^ay	76.28^abz	72.75^bcy	71.44^cy
Reactive SH content (nmol /mg protein)	0	21.71^ay	22.21^ay	22.01^ay	21.58^ay	1.25	<0.001	<0.001	0.0262
	60	22.84^by	23.88^by	27.00^ax	22.25^by	1.25	<0.001	<0.001	0.0262
	120	25.02^bx	27.99^ax	28.92^ax	25.28^bx

³a ~ d in the same row indicate a significant difference between ultrasound power (P < 0.05).

⁴x ~ z in the same column indicate significant difference between treatment time (P < 0.05).

⁵indexes at the 0 min express the initial value of myofibrillar proteins before treatment.

P-Values indicate the level of significance including high-intensity ultrasound power, treatment time and their interaction.

SE: standard error.