Changes of TVB-N values in fish samples during storage
were presented in Fig. 4. The initial TVB-N values ranged from
11.4 ± 2.9 to 13.3 ± 4.6 mg N/100 g of fish. TVB-N values of silver
carp fillets increased progressively with storage time in all the
treatments. However, it was obviously observed that the rate of
TVB-N enhancement was significantly slower in samples coated
with Ch and NCh than the controls. At the end of the storage period,
coated groups (Ch and Nch) had significantly (P < 0.05) lower TVBN
values than that of the controls (lots C and AC). Furthermore,
there were significant difference (P < 0.05) in TVB-N values among
Ch and Nch treatment groups on days 9 and 12, while TVB-N values
in Ch group were 39.3 ± 2.8 and 44.4 ± 3.3 mg N/100 g of fish, and in
Nch group were 24.6 ± 3.3 and 30.8 ± 1.5 mg N/100 g of fish,
respectively. This could be attributed to the higher antimicrobial
Fig.