Table 3. Dipeptidyl peptidase-IV (DPP-IV) inhibitory activity of 181 plant extracts

Sample no.	Inhibitory activity (%)	Sample no.	Inhibitory activity (%)
Ile-Pro-Ile	86 ± 0.31^****	43.	51 ± 0.53^****
1.	51 ± 2.55^****	44.	52 ± 0.61^****
2.	54 ± 2.23^****	45.	50 ± 1.46^****
3.	54 ± 0.92^{1), ****}	46.	51 ± 0.96^****
4.	55 ± 5.97^{1), ****}	47.	49 ± 1.07^****
5.	50 ± 2.40^****	48.	49 ± 1.07^****
6.	48 ± 0.80^****	49.	52 ± 1.86^****
7.	51 ± 0.41^****	50.	52 ± 1.00^****
8.	52 ± 0.85^****	51.	50 ± 1.61^****
9.	52 ± 2.11^****	52.	53 ± 1.84^****
10.	49 ± 1.16^****	53.	47 ± 1.96^****
11.	53 ± 4.39^****	54.	16 ± 1.86^****
12.	53 ± 3.08^****	55.	51 ± 0.46^****
13.	50 ± 0.81^****	56.	53 ± 1.51^****
14.	50 ± 0.70^****	57.	53 ± 1.92^****
15.	52 ± 2.00^****	58.	50 ± 0.70^****
16.	50 ± 1.01^****	59.	53 ± 1.33^****
17.	47 ± 0.55^****	60.	51 ± 0.96^****
18.	49 ± 0.85^****	61.	51 ± 1.61^****
19.	52 ± 5.48^****	62.	12 ± 1.08^**
20.	52 ± 2.65^****	63.	12 ± 1.08^**
21.	48 ± 0.85^****	64.	16 ± 1.42^****
22.	55 ± 1.59^{1), ****}	65.	13 ± 1.42^***
23.	49 ± 0.55^****	66.	7 ± 0.82
24.	52 ± 2.39^****	67.	8 ± 1.42
25.	48 ± 0.55^****	68.	13 ± 1.48^***
26.	50 ± 0.81^****	69.	11 ± 2.49^**
27.	53 ± 3.99^****	70.	11 ± 2.69^**
28.	52 ± 0.93^****	71.	10 ± 2.56^**
29.	50 ± 3.57^****	72.	10 ± 4.16^**
30.	50 ± 1.07^****	73.	16 ± 2.13^****
31.	49 ± 0.61^****	74.	10 ± 2.05^*
32.	51 ± 1.07^****	75.	6 ± 1.23
33.	49 ± 2.13^****	76.	7 ± 1.78
34.	52 ± 0.85^****	77.	9 ± 1.42^*
35.	52 ± 0.41^****	78.	9 ± 1.48^*
36.	52 ± 1.60^****	79.	5 ± 3.64
37.	49 ± 0.41^****	80.	6 ± 3.35
38.	47 ± 2.92^****	81.	2 ± 2.28
39.	49 ± 3.57^****	82.	11 ± 2.58^*
40.	56 ± 2.76^{1), ****}	83.	12 ± 3.10^*
41.	50 ± 0.93^****	84.	18 ± 1.87^****
42.	55 ± 1.20^{1), ****}	85.	15 ± 2.68^***
86.	18 ± 1.14^****	130.	3 ± 2.08
87.	16 ± 1.55^***	131.	6 ± 1.91
88.	18 ± 0.74^****	132.	9 ± 2.53
89.	3 ± 3.72	133.	12 ± 1.10^**
90.	18 ± 2.39^****	134.	5 ± 2.16
91.	12 ± 4.65^**	135.	0 ± 2.53
92.	18 ± 4.49^****	136.	0 ± 3.63
93.	11 ± 6.36^*	137.	5 ± 3.70
94.	13 ± 5.21^**	138.	0 ± 5.51
95.	11 ± 5.28^*	139.	0 ± 5.41
96.	10 ± 6.70	140.	2 ± 5.07
97.	5 ± 3.72	141.	0 ± 5.51
98.	8 ± 4.23	142.	1 ± 4.73
99.	9 ± 4.23	143.	7 ± 2.73
100.	12 ± 4.49^**	144.	5 ± 4.50
101.	13 ± 3.36^**	145.	19 ± 4.02^****
102.	8 ± 3.72	146.	4 ± 5.12
103.	4 ± 4.88	147.	1 ± 2.20
104.	3 ± 4.79	148.	0 ± 3.70
105.	2 ± 3.24	149.	0 ± 2.91
106.	12 ± 2.39^*	150.	0 ± 4.41
107.	12 ± 2.39^*	151.	4 ± 2.51
108.	17 ± 2.23^***	152.	0 ± 1.24
109.	20 ± 1.97^****	153.	0 ± 0.41
110.	21 ± 4.53^****	154.	0 ± 2.30
111.	16 ± 2.23^***	155.	0 ± 2.89
112.	1 ± 1.55	156.	0 ± 1.09
113.	7 ± 3.75	157.	0 ± 0.71
114.	6 ± 3.01	158.	0 ± 2.30
115.	4 ± 5.07	159.	5 ± 2.30
116.	6 ± 5.69	160.	0 ± 2.58
117.	14 ± 6.71^**	161.	0 ± 4.59
118.	5 ± 6.09	162.	0 ± 3.11
119.	10 ± 5.37	163.	1 ± 3.27
120.	10 ± 6.70	164.	2 ± 3.30
121.	19 ± 6.02^****	165.	1 ± 1.49
122.	19 ± 4.55^****	166.	0 ± 5.71
123.	12 ± 4.10^*	167.	0 ± 4.12
124.	13 ± 3.94^*	168.	0 ± 3.52
125.	6 ± 5.28	169.	0 ± 2.18
126.	6 ± 3.82	170.	0 ± 4.59
127.	5 ± 4.10	171.	7 ± 9.72
128.	0 ± 2.08	172.	0 ± 0.82
129.	5 ± 2.50	173.	0 ± 3.67
174.	5 ± 5.67	178.	7 ± 3.17
175.	7 ± 1.06	179.	10 ± 2.80
176.	12 ± 5.25^*	180.	8 ± 4.33
177.	12 ± 10.74^*	181.	12 ± 3.67

Each extract was tested at a final concentration of 100 μg/mL, and results are presented as mean ± SD from triplicate experiments.
Differences between each extract (n = 181) and the control were assessed by one-way analysis of variance (ANOVA) followed by Dunnett’s multiple comparisons test.
Ile-Pro-Ile was used as the positive control, and the top five extracts with the highest activity.
Adjusted p-values are reported; statistical significance is denoted as
p < 0.05,
p < 0.01,
p < 0.001, and
p < 0.0001.