TABLE 4.

Comparison of extractants on different parameters based on a five-point scale (1 to 5) and with different weights allocated to the different parameters^a

Parameter	Weightb	Acetone		Ethanol		Methanol		MCWc		Methylene dichloride		Water
		Ad	Ce	A	C	A	C	A	C	A	C	A	C
Quantity extracted	3	6	3	9	6	12	12	12	12	3	3	9	9
Rate of extraction	3	12	15	12	12	12	12	12	12	15	15	9	9
No. of compounds extracted	5	20	20	10	15	15	20	10	15	10	15	5	5
No. of inhibitors extracted	5	20	20	0	10	20	15	20	20	20	15	0	0
Toxicity in bioassay	4	16	16	8	8	0	0	8	8	8	8	16	16
Ease of removal	5	20	20	5	5	10	10	10	10	20	20	0	0
Hazardous to use	2	8	8	8	8	2	2	6	6	6	6	8	8
Total		102	102	52	64	71	71	78	83	79	79	47	47

^aReprinted from reference 61 with permission of the publisher. 

^bFive-point scale (5, best; 1, worst), based on Eloff’s (61) judgment of the importance of the parameter. 

^cMCW, methanol-chloroform-water. 

^dResults for Anthocleista grandiflora. 

^eResults for Combretum erythrophyllum.