Antioxidant activity and structural features of Cinnamomum zeylanicum.
The antioxidants in food materials have recently attracted researchers' attention because many reports have shown that the oxidative stress is closely related to the aging process of the cells and acts as a trigger to various diseases including cancer. Since reactive oxygen species (ROS) is involved in initiating and promoting several diseases such as cancer and cardiovascular events, this study was designed to evaluate the antioxidant capacity of pectic polysaccharides extracted from the bark of Cinnamomum zeylanicum, locally known as Daruchini. An arabinogalactan (A), one partly methyl esterified galacturonic acid (B) and a neutral glucan (C) were isolated. The glucan is made up of β-(1 → 3)-linked glucopyranosyl residues and has a molecular mass of 7 kDa. The arabinogalactan is highly branched and has an average molecular mass of 40 kDa. The in vitro antioxidant capacity of the fractions was studied by ferric reducing antioxidant power (FRAP) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) assays. The arabinogalactan (A) showed the highest potential followed by the uronic acid (B) and glucan (C). Taken together, these findings demonstrate that these polysaccharides could be used as natural antioxidants by the food industry.
Department of Chemistry, Durgapur Government College, Durgapur, 713 214, West Bengal, India. tuhinghoshbuchem@gmail.com.
Tuhin
T
Ghosh
Department of Chemistry, The University of Burdwan, Burdwan, 713 101, West Bengal, India.
Ankita
A
Basu
Department of Botany, Hooghly Mohsin College, Hooghly, Chinsurah, 712 101, West Bengal, India.
Dipan
D
Adhikari
Department of Zoology, Acharya Brojendra Nath Seal College, Cooch, Behar, 736 101, West Bengal, India.
Debnarayan
D
Roy
Department of Zoology, Durgapur Government College, Durgapur, 713 214, West Bengal, India.
Achintya Kumar
AK
Pal
Antioxidant activity; Bark; Cinnamomum zeylanicum; Polysaccharides; Size exclusion chromatography; Spectrometry