In:
Phytotherapy Research, Wiley, Vol. 25, No. 10 ( 2011-10), p. 1451-1456
Abstract:
Twenty compounds were isolated from the ethanol extract of Distylium racemosum branches and their inhibitory activities on tyrosinase, elastase and free radicals evaluated. The isolated compounds were identified as dibenzofurans (1–4), abscisic acid (5), 6′‐ O ‐galloylsalidroside (6), catechin derivatives (7–11), gallic acid derivatives (12–14), tyrosol (15), flavonoids (16–18), lupeol (19) and 1,2,3,6‐tetragalloylglucose (20). For study of tyrosinase inhibition activities, when compared with arbutin (IC 50 48.8 μg/mL), four compounds (8, 11, 13, 17) showed higher activities, with IC 50 values of 4.8, 30.2, 40.5 and 37.7 μg/mL, respectively. For the elastase inhibition test, dibenzofuran 1 showed greater activity than the positive control, oleanolic acid (IC 50 9.7 μg/mL), with an IC 50 of 7.7 μg/mL. In the studies on DPPH radical scavenging activities, five compounds (11, 12, 13, 14, 15) showed higher activities than ascorbic acid (IC 50 5.0 μg/mL), with IC 50 values of 4.6, 3.9, 2.9, 3.8 and 4.7 μg/mL, respectively. Copyright © 2011 John Wiley & Sons, Ltd.
Type of Medium:
Online Resource
ISSN:
0951-418X
,
1099-1573
Language:
English
Publisher:
Wiley
Publication Date:
2011
detail.hit.zdb_id:
1493490-5
SSG:
15,3
Permalink