Inhibitory potential of traditional herbs on α-amylase activity

Figures & data

Table 1.  Percentage yields of extracts (%W/W) and IC₅₀ values of plant species investigated.

Plant species	Extracts used	Percentage yield of extracts	IC50 value (µg/mL)
T. arjuna (bark)	Aqueous	23	592 ± 0.34
	50% methanolic	28	302 ± 0.55
	100% methanolic	21	1503 ± 0.71
E. cumini (seed)	Aqueous	12	898 ± 0.46
	50% methanolic	10	632 ± 0.21
	100% methanolic	6	1680 ± 0.48
A. marmelos (leaves)	Aqueous	6.7	648 ± 0.18
	50% methanolic	2.98	503 ± 0.28
	100% methanolic	1.6	2168 ± 0.87

Figure 1.  Effect of T. arjuna extracts on α-amylase activity. Values are means ± SEM. Values are significantly different from control as well as within the groups at p < 0.001.

Figure 2.  Effect of E. cumini extracts on α-amylase activity. Values are means ± SEM. Values are significantly different from control as well as within the groups at p < 0.01.

Figure 3.  Effect of A. marmelos extracts on α-amylase activity. Values are means ± SEM. Values are significantly different from control as well as within the groups at p < 0.01.

Figure 4.  Comparative effect of most potent 50% methanolic extracts on α-amylase activity. Values are means ± SEM. Values are significantly different from control as well as within the groups at p < 0.01.

Figure 5.  Linear regression curve of percent inhibition of α-amylase at concentrations of aqueous T. arjuna extract.

Figure 6.  Linear regression curve of percent inhibition of α-amylase at concentrations of 50% methanolic T. arjuna extract.

Figure 7.  Linear regression curve of percent inhibition of α-amylase at concentrations of 100% methanolic T. arjuna extract.

Figure 8.  Linear regression curve of percent inhibition of α-amylase at concentrations of aqueous E. cumini extract.

Figure 9.  Linear regression curve of percent inhibition of α-amylase at concentrations of 50% methanolic E. cumini extract.

Figure 10.  Linear regression curve of percent inhibition of α-amylase at concentrations of 100% methanolic E. cumini extract.

Figure 11.  Linear regression curve of percent inhibition of α-amylase at concentrations of aqueous A. marmelos extract.

Figure 12.  Linear regression curve of percent inhibition of α-amylase at concentrations of 50% methanolic A. marmelos extract.

Figure 13.  Linear regression curve of percent inhibition of α-amylase at concentrations of 100% methanolic A. marmelos extract.