. 2015 Nov 4;53(3):1620–1632. doi: 10.1007/s13197-015-2076-9

Table 3.

Changes in quercetin Q4’G glucosidase and 4′-glucosyltransferase (nmole/gFW/min) in onions kept in the storage chamber for 9 months at 4 °C, 10 °C, 25 °C

	0	1	2	3	4	5	6	7	8	9
4 °C
Q4’G glucosidase	2.38 ± 0.20^ab	2.88 ± 0.23^b	2.90 ± 0.12^a	3.00 ± 0.24^a	3.13 ± 0.22^b	3.48 ± 0.19^ab	3.80 ± 0.12^ab	3.12 ± 0.22^ab	2.98 ± 0.19^a	2.45 ± 0.23^abc
Q4’glucos- yltransferase	13.60 ± 0.40^a	14.20 ± 0.06^b	15.48 ± 0.04^b	16.01 ± 0.18^a	16.92 ± 0.48^a	17.56 ± 0.52^a	18.20 ± 0.47^ab	16.20 ± 0.32^a	15.80 ± 0.35^a	15.20 ± 0.34^ab
10 °C
Q4’G glucosidase	2.38 ± 0.20 ^ab	2.48 ± 0.20^ab	2.59 ± 0.29^ab	2.98 ± 0.25^ab	3.03 ± 0.26^a	3.28 ± 0.20 ^a	3.40 ± 0.15^a	3.04 ± 0.22^a	2.78 ± 0.12^a	2.05 ± 0.29^a
Q4’glucos-yltransferase	13.60 ± 0.40^b	14.80 ± 0.45^a	16.48 ± 0.14^b	17.01 ± 0.49^a	18.92 ± 0.37^b	18.56 ± 0.11^a	18.90 ± 0.45^ab	18.20 ± 0.25^a	16.80 ± 0.32^a	15.52 ± 0.23^a
25 °C
Q4’G glucosidase	2.38 ± 0.20^a	2.28 ± 0.17^ac	2.39 ± 0.23^bc	2.18 ± 0.12 ^ab	3.03 ± 0.25^ab	2.98 ± 0.26^b	3.28 ± 0.18^ab	2.29 ± 0.19^a	2.28 ± 0.21^ab	2.15 ± 0.22^ab
Q4’glucos- yltransferase	13.60 ± 0.40^a	14.62 ± 0.22^b	15.52 ± 0.03^a	14.55 ± 0.06^a	16.80 ± 0.44^a	16.20 ± 0.38^a	16.70 ± 0.38^a	16.00 ± 0.38^a	15.80 ± 0.33^a	15.20 ± 0.48^ab
Calibration curve equations for quercetin-4’G glucosidase and quercetin 4′-glucosyltransferase
Enzymes	Equation	r ²
quercetin-4’G glucosidase	x = (y- 0.0211)/0.000204	0.9995
quercetin 4′-glucosyltransferase	x = (y- 0.052037)/0.000363	0.9955

At the 0.05 level, the mean difference values with different letters of superscript are significantly different from each other and the interaction between temperature and storage time is significant