Skip to main content
. 2020 Jun 26;58(3):862–869. doi: 10.1007/s13197-020-04600-5

Table 3.

Furan levels in instant coffee, coffee mix and liquid coffee (canned coffee, Americano)

Type Sample Furan (ng/g, ng/mL)
Instant coffee I_1 139.13 ± 6.72b
I_2 214.61 ± 8.61c,d
I_3 1197.96 ± 66.39j
I_4 609.56 ± 25.43h
I_5 161.21 ± 2.86b,c
I_6 405.78 ± 5.26f
I_7 1345.70 ± 17.37k
I_8 2155.47 ± 42.39m
I_9 517.82 ± 22.60g
I_10 49.93 ± 0.77a
I_11 831.13 ± 60.63i
I_12 870.64 ± 54.69i
I_13 206.05 ± 5.38c,d
I_14 276.31 ± 4.55e
I_15 276.20 ± 4.44e
I_16 1715.24 ± 53.84l
I_17 259.37 ± 6.39d,e
Coffee mix M_1 22.19 ± 0.63a,b
M_2 81.11 ± 11.19e
M_3 161.51 ± 11.27f
M_4 42.80 ± 5.97b,c,d
M_5 182.57 ± 26.00f,g
M_6 63.47 ± 6.68d,e
M_7 39.30 ± 1.29b,c
M_8 65.50 ± 5.44d,e
M_9 60.32 ± 9.64c,d,e
M_10 201.91 ± 30.08g
M_11 10.87 ± 1.38a
M_12 12.83 ± 1.92a
Canned coffee C_1 15.49 ± 2.49a
C_2 27.34 ± 2.14b
C_3 36.64 ± 0.90c
C_4 99.35 ± 6.82d
Americano A_1 77.35 ± 3.79a
A_2 144.59 ± 23.11b
A_3 209.09 ± 8.89c
A_4 169.27 ± 16.51b

1. All values are shown as mean ± standard deviation

2. Different letters show significant mean differences between samples by Duncan’s test (p < 0.05)

3. In case of canned and Americano coffee unit of concentration is ng/mL