Effects of Litsea cubeba Essential Oil/Chitosan Coating on Storage Quality of Pelteobagrus fulvidraco
In order to study the synergistic effects of Litsea cubeba oil(LCO)and chitosan(CS)treatment on the storage quality of Pelteobagrus fulvidraco(yellow catfish),yellow catfish was used as experimental materials,and control group,chitosan coating group,and different concentrations of LCO/CS composite coating groups(0.2％,0.4％,0.6％)were set up for treatment.The samples were stored at 4 ℃ for 13 days,and changes in pH,total volatile basic nitrogen(TVB-N),microbial count,thiobarbituric acid value(TBA),texture,and sensory evaluation were determined.The results showed that the CS+LCO treatment could effectively delay the increase of pH,TBA value,TVB-N value,and microbial count.On the 9th day of storage,the pH,TBA value,TVB-N value,and microbial count of the CS+LCO treatment group were 3.3％,37.7％,38.17％,and 11.74％,lower than those of the control group,respectively.At the same time,the muscle texture indicators such as hardness,elasticity,chewiness,and resilience of the CS+LCO treatment group decreased slowly,and the sensory score was higher than that of other samples at the same period.It can be seen that LCO/CS coating can effectively maintain the storage quality of yellow catfish and prolong its shelf life,with the best effect of CS+0.6％LCO treatment.
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