Determination of Total Flavonoids Contents and Antioxidant Activity of Ginkgo biloba Leaf by Near-Infrared Reflectance Method

Table 1

The total flavonoids content (TFC) and total antioxidant activity (TAA) of Ginkgo biloba leaves.

Samples	TFC	TAA	Samples	TFC	TAA	Samples	TFC	TAA
1		0.47 ± 0.03	40	23.59 ± 1.79	2.98 ± 0.19	79	7.22 ± 0.46	1.01 ± 0.07
2	7.35 ± 0.42	0.99 ± 0.05	41	7.97 ± 0.48	1.06 ± 0.06	80	15.59 ± 0.95	1.96 ± 0.16
3	10.16 ± 0.76	1.93 ± 0.12	42	10.72 ± 0.98	1.14 ± 0.08	81	7.66 ± 0.68	1.64 ± 0.12
4	13.53 ± 0.87	2.12 ± 0.16	43	43.33 ± 3.16	3.97 ± 0.21	82	13.59 ± 0.97	1.93 ± 0.13
5	46.57 ± 3.25	3.48 ± 0.27	44	9.91 ± 0.69	1.19 ± 0.09	83	21.46 ± 1.46	2.94 ± 0.21
6	15.15 ± 0.93	2.33 ± 0.13	45	9.28 ± 0.64	1.75 ± 0.12	84	9.10 ± 0.54	0.83 ± 0.06
7	21.96 ± 1.98	2.67 ± 0.15	46	8.60 ± 0.63	1.00 ± 0.09	85	7.16 ± 0.58	0.57 ± 0.03
8	13.41 ± 1.15	1.52 ± 0.10	47	49.13 ± 2.67	3.84 ± 0.24	86	16.78 ± 1.07	1.24 ± 0.10
9	7.16 ± 0.63	1.51 ± 0.11	48	14.53 ± 0.93	1.99 ± 0.11	87	16.09 ± 0.99	1.39 ± 0.09
10	29.21 ± 1.92	2.45 ± 0.15	49	14.15 ± 0.96	1.47 ± 0.08	88	24.09 ± 1.54	2.81 ± 0.18
11	19.84 ± 1.82	2.34 ± 0.14	50	19.4 ± 1.65	2.51 ± 0.16	89	18.40 ± 1.48	1.68 ± 0.12
12	25.96 ± 2.29	2.83 ± 0.18	51	17.4 ± 1.34	1.68 ± 0.10	90	20.71 ± 1.35	2.79 ± 0.22
13	26.84 ± 2.32	2.59 ± 0.19	52	23.77 ± 1.87	2.69 ± 0.19	91	19.65 ± 1.28	2.62 ± 0.21
14	19.53 ± 1.75	1.82 ± 0.12	53	17.65 ± 0.95	1.99 ± 0.12	92	18.71 ± 1.23	1.66 ± 0.11
15	20.46 ± 1.69	2.08 ± 0.18	54	11.47 ± 0.73	1.19 ± 0.09	93	18.21 ± 1.01	2.23 ± 0.15
16	33.96 ± 2.98	3.26 ± 0.26	55	30.77 ± 1.98	3.15 ± 0.23	94	18.90 ± 1.42	2.18 ± 0.18
17	29.02 ± 1.92	2.33 ± 0.16	56	30.71 ± 1.85	2.84 ± 0.22	95	16.15 ± 0.97	1.60 ± 0.12
16	48.82 ± 3.44	4.42 ± 0.32	57	35.89 ± 2.45	3.18 ± 0.25	96	18.9 ± 1.12	2.78 ± 0.15
19	31.52 ± 2.76	2.60 ± 0.16	58	36.14 ± 2.24	3.50 ± 0.18	97	17.9 ± 1.53	2.91 ± 0.19
20	22.90 ± 1.54	2.04 ± 0.18	59	43.45 ± 2.89	3.57 ± 0.27	98	11.97 ± 0.98	1.22 ± 0.08
21	24.90 ± 1.59	2.67 ± 0.21	60	14.22 ± 1.07	1.47 ± 0.09	99	4.41 ± 0.35	0.72 ± 0.06
22	29.40 ± 1.97	2.96 ± 0.13	61	22.96 ± 1.48	2.64 ± 0.14	100	2.72 ± 0.17	0.32 ± 0.22
23	17.90 ± 0.98	1.61 ± 0.09	62	36.02 ± 1.91	3.59 ± 0.23	101	3.60 ± 0.23	0.52 ± 0.03
24	21.84 ± 1.89	2.57 ± 0.19	63	21.15 ± 1.58	2.62 ± 0.19	102	6.03 ± 0.51	0.84 ± 0.06
25	49.20 ± 2.92	4.65 ± 0.25	64	37.33 ± 2.68	3.78 ± 0.27	103	8.53 ± 0.64	1.40 ± 0.08
26	11.41 ± 0.70	1.19 ± 0.09	65	19.53 ± 1.39	1.72 ± 0.11	104	4.72 ± 0.36	0.55 ± 0.04
27	19.21 ± 1.06	1.80 ± 0.12	66	3.79 ± 0.27	0.71 ± 0.05	105	7.78 ± 0.42	1.35 ± 0.08
28	22.84 ± 1.42	2.93 ± 0.15	67	25.02 ± 1.52	2.07 ± 0.13	106	1.85 ± 0.12	0.97 ± 0.09
29	20.78 ± 1.39	2.50 ± 0.16	68	28.65 ± 1.86	2.31 ± 0.16	107	7.16 ± 0.58	1.91 ± 0.11
30	28.71 ± 2.35	3.41 ± 0.21	69	20.34 ± 1.53	2.17 ± 0.18	108	8.72 ± 0.63	2.41 ± 0.15
31	16.97 ± 1.04	1.65 ± 0.09	70	28.33 ± 1.94	2.19 ± 0.17	109	6.16 ± 0.51	0.55 ± 0.03
32	14.97 ± 0.78	1.32 ± 0.09	71	25.77 ± 2.05	2.42 ± 0.21	110	1.47 ± 0.93	0.24 ± 0.02
33	26.77 ± 1.85	2.99 ± 0.17	72	20.53 ± 1.86	2.18 ± 0.19	111	14.78 ± 0.54	2.81 ± 0.18
34	7.10 ± 0.55	0.81 ± 0.06	73	6.41 ± 0.51	0.88 ± 0.05	112	8.91 ± 0.61	1.42 ± 0.09
35	18.15 ± 1.07	2.63 ± 0.17	74	15.53 ± 1.27	1.46 ± 0.09	113	11.97 ± 0.85	2.42 ± 0.15
36	14.53 ± 0.96	1.39 ± 0.10	75	22.15 ± 1.75	2.28 ± 0.16
37	29.02 ± 2.14	3.73 ± 0.21	76	8.35 ± 0.61	1.09 ± 0.07
38	15.97 ± 0.98	1.28 ± 0.09	77	30.08 ± 1.98	3.00 ± 0.19
39	24.02 ± 1.40	2.11 ± 0.11	78	32.27 ± 2.21	3.35 ± 0.21

a: equivalent to rutin per g dry weight (mg g⁻¹); b: equivalent to Trolox per g of dry weight (mM g⁻¹).