Anatomical structure and antioxidant activity of red bulb plant(Eleutherine americana)on different plant age

Abstract

Kuntorini EM, Dewi M, Misrina. 2016. Anatomical structure and antioxidant activity of red bulb plant (Eleutherineamericana) on different plant age.Biodiversitas 17:229-233.Eleutherine americanaMerr is an medicinal herb named “red bulb” or“bawang dayak”. Red bulb plant is commonly used as anti-breast cancer in Kalimantan, which may be linked to their bioactivenaphtoquinone-derivatives properties. The aim of this study was to characterize the anatomical structure and antioxidant activity in redbulb of different ages. The anatomical structure of bulb was fixed and prepared following paraffin embedding techniques. Measurementof antioxidant activity carried out using the DDPH method. The anatomical structure of red bulb showed that the P2 (12 week afterplanting (WAP)) bulb is thicker in the upper and lower epidermis,parenchyma, and vascularbundles than P1 (6WAP) bulb. The resultof antioxidant activity of P2 (12WAP) with IC50 = 50.42 ppm have stronger antioxidant activity than the P1 (6WAP) with IC50 = 93ppm, but weaker than vitamin C (IC50 = 3.03 ppm) and BHT (IC50 = 5.52 ppm) as a control