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. 2017 Nov 1;55(1):424–430. doi: 10.1007/s13197-017-2910-3

Table 1.

Colour intensity, free and total SO2, and volatile compounds profile of white wines packed in bottles with two different cork stoppers (natural and Neutrocork) and in bag-in-box (BIB), before filling (Control) and after a storage period of 3, 6 and 12 months

Parameters Control Natural cork Neutrocork BIB
3 months 6 months 12 months 3 months 6 months 12 months 3 months 6 months 12 months
Colour intensity 0.070 (0.00)a 0.077 (0.001)a,b 0.077 (0.001)a,b 0.080 (0.001)d,e 0.076 (0.001)b 0.076 (0.000)b 0.079 (0.000)c,d 0.083 (0.001)f 0.083 (0.002)e,f 0.091 (0.003)g
Free SO2 27 (0)f 25.2 (1.1)e,f 23.6 (0.5)d,e 19.8 (2.3)b,c 23.2 (0.8)b,c 22.0 (0.0)d,e 17.2 (1.1)b 21.0 (2.2)c,d 22.2 (0.8)c,d 11.8 (2.3)a
Total SO2 119 (0)e 114 (1)d,e 114 (3)d,e 105 (6)b 115 (0)d,e 112 (3)c,d 106 (2)b,c 110 (4)b,c,d 111 (2)b,c,d 92.4 (4.9)a
Volatile compounds
Alcohol (mg/L)
 2-Phenylethanol 16.6 (0.4)e 16.2 (1.5)d,e 13.2 (1.3)c 9.13 (1.13)b 16.2 (1.2)d,e 13.0 (1.6)c 6.57 (0.59)a 14.7 (1.6)c,d 10.2 (1.3)b 5.54 (0.45)a
Esters (mg/L)
 2-Phenylethyl acetate 0.385 (0.024)e 0.230 (0.034)d 0.227 (0.011)d 0.213 (0.014)c,d 0.228 (0.012)d 0.236 (0.027)d 0.170 (0.022)b 0.225 (0.022)d 0.189 (0.022)b,c 0.086 (0.014)a
 Hexyl acetate 0.600 (0.007)d 0.305 (0.059)c 0.282 (0.065)c 0.179 (0.019)b 0.170 (0.024)b 0.138 (0.035)a,b 0.130 (0.011)a 0.100 (0.032)a 0.138 (0.035)a,b 0.099 (0.006)a
 Isoamyl acetate 1.67 (0.04)d 1.53 (0.14)d 1.13 (0.19)c 0.874 (0.083)b 1.20 (0.18)c 1.15 (0.21)c 0.520 (0.104)a 1.26 (0.06)c 1.07 (0.19)b,c 0.325 (0.038)a
 Ethyl butanoate 0.282 (0.020)e 0.272 (0.046)d,e 0.178 (0.024)b 0.164 (0.020)b 0.236 (0.032)c,d 0.190 (0.032)b 0.108 (0.026)a 0.233 (0.014)c,d 0.203 (0.035)b,c 0.080 (0.015)a
 Ethyl hexanoate 2.63 (0.06)d 1.81 (0.25)c 1.16 (0.27)b 0.805 (0.117)a 1.33 (0.21)b 1.02 (0.23)a,b 0.809 (0.058)a 1.20 (0.37)b 1.22 (0.38)b 0.702 (0.149)a
 Ethyl octanoate 3.57 (0.77)e 1.49 (0.20)c 1.51 (0.22)c 1.01 (0.15)a,b 1.24 (0.15)a,b,c 1.52 (0.11)c 1.01 (0.07)a,b 1.95 (0.63)d 1.32 (0.28)b,c 0.877 (0.186)a
Terpenes (µg/L)
 Linalool 3.91 (0.33)d 2.93 (0.34)b 4.03 (0.26)d 3.20 (0.93)b,c 3.15 (0.53)b,c 3.77 (0.66)c,d 1.19 (0.14)a 3.17 (0.28)b,c 3.16 (0.52)b,c 1.19 (0.14)a
 α-Terpineol 0.612 (0.010)d 1.17 (0.07)e 0.263 (0.236)b,c 0.301 (0.045)b,c 1.18 (0.06)e 0.344 (0.299)c 0.231 (0.039)b,c 1.08 (0.03)e nqa 0.149 (0.033)a,b
Norisoprenoid (µg/L)
 β-Damascenone 0.692 (0.046)f 0.332 (0.019)d 0.363 (0.030)d,e 0.150 (0.016)c 0.382 (0.010)e 0.365 (0.032)d,e 0.015 (0.004)b 0.335 (0.026)d 0.055 (0.045)a 0.060 (0.010)a

Values in parenthesis are standard deviations from four determinations; values not sharing the same superscript letter (a–g) within the horizontal line are different according to the Tukey test

nq not quantified