Table 3.

Sensory evaluation indices of large yellow croakers.

Sensory Evaluation Indicators	Grading Principles	Scores
Gill brightness	The gills are bright and mucus-free	8~10
	The gills are darkened and mucus-free	6~8
	The gills are dark red with mucus	4~6
	The gills are black with mucus	2~4
Muscle elasticity	The texture is clear, tightly organized, and elastic	8~10
	The texture is clear, the tissue is soft, and the elasticity is reduced	6~8
	The texture fades, and the tissue is soft and slightly elastic	4~6
	The texture is blurred, the tissue is floating, and it is inelastic	2~4
Volatile odor	No odor	8~10
	Slightly fishy	6~8
	The fishy smell is emanating and slightly putrid smell	4~6
	The whole smells of spoilage	2~4
eye appearance	The eyeball is clear, and the cornea is transparent	8~10
	The eyeball is darkened, and the cornea is clear but slightly sunken	6~8
	The eyeball is darkened, and the cornea is blurred and sunken	4~6
	The eyeball and cornea are blurred as a whole	2~4

Exegesis: sensory score = (gill brightness + muscle elasticity + volatile odor+ eye appearance)/4.