INDONESIAN JOURNAL OF PHARMACY
Vol 25 No 2, 2014

BIOACTIVE COMPOUNDS IN BENGKOANG (Pachyrhizus erosus) AS ANTIOXIDANT AND TYROSINASE INHIBITING AGENTS

Endang Lukitaningsih (Dept. of Pharmaceutical Chemistry, Faculty of Pharmacy, Gadjah Mada University, Sekip Utara, Bulaksumur, Yogyakarta 55281, Indonesia)



Article Info

Publish Date
01 Apr 2014

Abstract

In Indonesia, the roots of bengkoang (Phacyrhizus erosus) have been used as the excipient for sun screening and skin whitening paste. Since the active compounds exhibiting skin whitening or sun screening effect have not previously been studied, the aim of this study was to identify compounds with antioxidant and tyrosinase inhibitor activities. Soxhlet extraction was used as the method of isolation with petroleum ether as the solvent and it was followed by fractionation using ethyl acetate to obtain three isoflavonoids (i.e. daidzein (2); daidzein-7-O-ß-glucopyranose (3); 5-hydroxy-daidzein-7-O-ß-glucopyranose (4)), and a new pterocarpan (i. e. 8,9-furanyl-pterocarpan-3-ol (1)) which antioxidant activities (SC50% values) of 2.11; 11.86; 0.69 and 7.86 respectively. All compounds showed tyrosinase inhibiting activities with IC50 values of 4.38; 5.35; 7.49 and 22.20 mM, respectively for compound 4, 2, 1 and 3. These compounds can be used as antioxidant and skin whitening materials.

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Journal Info

Abbrev

3

Publisher

Subject

Medicine & Pharmacology

Description

Indonesian Journal of Pharmacy (ISSN-e: 2338-9486, ISSN-p: 2338-9427), formerly Majalah Farmasi Indonesia (ISSN: 0126-1037). The journal had been established in 1972, and online publication was begun in 2008. Since 2012, the journal has been published in English by Faculty of Pharmacy Universitas ...