Antioxidant Enriched Fractions from Zingiber Officinale Roscoe.

Ginger rhizome (Zingiber officinale Roscoe) has many diverse
properties and medicinal values such as antioxidant potential combined with
the properties of a spice. Dried ginger (DG) were extracted with aqueous
ethanol and freeze-dried. The extract was evaluated for antioxidant potential,
using 1,1’-diphenyl-2-picryl-hydrazyl radical scavenging, antioxidant capacity
and reducing power assays. DG extract was further fractionated into methanol
(Mfr) and water-soluble (Wfr) fractions. The Mfr exhibited higher antioxidant
capacity when compared to DG extract. Higher antioxidant potential of the
methanol fraction may be due to the presence higher polyphenols and [6]-
gingerol content. This suggests that alcoholic soluble fraction possess
enormous scope to enhance the antioxidant potential when used as a
supplement in various food as well as pharmaceutical formulations / products.