Barely Significant

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The results showed that the moisture content decreased while the oil content increased in AF and DF with frying time and the colour of AF samples was similar to the raw for preserving the fish skin of hairtail fillets well, meanwhile, the TBARS content in DF showed a trend of increasing first and then decreasing, According to these physicochemical indices and sensory evaluation, the optimal frying times for deep frying and air frying were 190 °C for 7 min and 24 min, respectively.
With the increase in ORP, P 22 showed a trend of significantly decreasing and then increasing, and all treatments were significantly lower than the control group ( p < 0.05); the mobility of water molecules in meat batter was reduced and a lower amount of free water was removed from the gel network, revealing that some free water was converted to immobile water with the addition of ORP.
It was clear that the contrast of the samples differed with increasing drying time, as denoted by the large differences in the gray value of the images, firstly exhibiting an increasing trend followed by a decrease in contrast ( Figure 8 a), which may be related to changes in the muscle texture during the shrimp-drying process.