Table 1 TVB-N (mg/100 g oyster tissue) and BA (mg/kg oyster tissue) of the oysters during storage

Day		TVB-N	SPM	SPD	PHE	CAD	PUT
0	Control	4.29 ± 0.26^Aa	72.89 ± 7.70^Aa	54.99 ± 5.18^Aa	3.45 ± 0.84^Ac	nd	nd
	FSW	3.94 ± 0.13^Aa	67.40 ± 9.89^Aa	50.29 ± 10.27^Aa	3.51 ± 2.94^Aa	nd	nd
	FSW-CFS	4.09 ± 0.08^Aa	74.77 ± 7.04^Aa	52.49 ± 12.84^Aa	3.43 ± 0.87^Ab	nd	nd
	FSW-cells	4.37 ± 0.62^Aa	74.97 ± 3.06^Aa	54.81 ± 3.78^Aa	4.79 ± 0.56^Ab	nd	nd
4	Control	7.62 ± 0.23^Ab	50.64 ± 0.83^Ab	38.30 ± 3.35^ABb	6.08 ± 0.55^Ab	nd	nd
	FSW	6.31 ± 0.02^Bb	51.30 ± 6.27^Ab	37.24 ± 3.45^ABb	5.59 ± 0.65^Aa	nd	nd
	FSW-CFS	6.29 ± 0.24^Bb	50.99 ± 2.32^Ab	33.22 ± 2.41^Bb	5.46 ± 0.26^Aa	nd	nd
	FSW-cells	6.54 ± 0.17^Bb	56.26 ± 6.80^Ab	41.86 ± 4.08^Ab	6.07 ± 0.43^Aa	nd	nd
8	Control	9.66 ± 0.14^Ac	67.91 ± 6.51^Aa	37.28 ± 4.33^Ab	6.41 ± 0.78^Ab	3.49 ± 0.31^Ab	nd
	FSW	7.05 ± 0.30 ^Cc	43.80 ± 3.96^Cbc	27.87 ± 7.02^Bbc	5.44 ± 0.79^Aa	nd	nd
	FSW-CFS	7.38 ± 0.34 ^Cc	53.83 ± 7.71^Bb	27.97 ± 2.57^Bb	5.64 ± 1.97^Aa	nd	nd
	FSW-cells	8.43 ± 0.37^Bc	60.64 ± 2.40^ABb	29.54 ± 1.99^Bc	6.36 ± 0.70^Aa	1.74 ± 0.73^Bb	nd
12	Control	15.23 ± 0.70^Ad	55.41 ± 3.17^Ab	28.80 ± 2.45^Bc	10.10 ± 1.89^Aa	8.00 ± 0.64^Aa	26.59 ± 0.18
	FSW	8.52 ± 0.37 ^Cd	39.88 ± 1.56 ^Cc	20.16 ± 2.27 ^Cc	5.81 ± 0.37^Ba	2.51 ± 0.38^B	nd
	FSW-CFS	8.56 ± 0.51 ^Cd	46.54 ± 4.48^Bb	23.98 ± 2.84^Cb	6.74 ± 0.82^Ba	2.47 ± 0.89^B	nd
	FSW-cells	12.39 ± 1.05^Bd	52.43 ± 5.70^ABc	33.72 ± 3.22^Ac	6.63 ± 0.66^Ba	2.91 ± 0.01^Ba	nd

A–C: The mean values with different letters at the same time points are significantly different between different treatments (P < 0.05); a–c: The mean values with different letters of the same treatment are significantly different between different time points (P < 0.05).
nd: not detected.
Each data point is presented as the mean value of triplicates ± standard deviation (SD).
SPM spermine, SPD spermidine, PHE phenylethylamine, CAD cadaverine, PUT putrescin.

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