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Diversity in Phytochemical Composition and Antioxidant Capacity of Dent, Flint, and Specialty Corns

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Relation http://ir.cftri.com/11712/
http://cerealchemistry.aaccnet.org/doi/abs/10.1094/CCHEM-02-14-0030-R
http://dx.doi.org/10.1094/CCHEM-02-14-0030-R
 
Title Diversity in Phytochemical Composition and Antioxidant Capacity of Dent, Flint, and Specialty Corns
 
Creator Das, Amit Kumar
Sreerama, Y. N.
Singh, Vasudeva
 
Subject 04 Analytical Chemistry
09 Quantitative Analysis
 
Description Dent, flint, and specialty genotypes of Indian yellow maize were evaluated for phytochemical content and their hydrophilic antioxidant capacity. Solid-phase extraction coupled with solid–liquid extraction was used to obtain free phenolics and flavonoids from maize samples, reducing the use of excessive solvents and handling time. Bound phenolics were extracted with enhanced acidic hydrolysis to improve extractability. The phenolic contents in Indian maize genotypes ranged from 46 to 79 μmol of ferulic acid equivalents per gram of sample on a dry basis (db). Carotenoids in Indian maize genotypes were found to be equivalent to Chinese yellow maize and ranged from 13 to 24 μg/g of sample (db), whereas tocol content varied greatly in the range of 607–1,238 μg of α-tocopherol equivalents/g of sample (db). Dent and flint corn did not exhibit differences (P > 0.05) in their phenolic contents, whereas among the specialty genotypes sweet corn contained the highest phenolics but least carotenoids (P < 0.05). Bound extracts appeared to contribute largely to 2,2′-diphenyl-1-picrylhydrazyl free radical scavenging, hydrogen peroxide scavenging, and ferric reducing antioxidant power of maize genotypes. Sweet corn exhibited higher antioxidant capacity (P < 0.05) among all the genotypes. The antioxidant capacities correlated well with the total phenolic contents of the maize genotypes.
 
Publisher American Association of Cereal Chemists
 
Date 2014-12
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://ir.cftri.com/11712/1/Diversity%20in%20Phytochemical%20Composition%20and%20Antioxidant%20Capacity.pdf
Das, Amit Kumar and Sreerama, Y. N. and Singh, Vasudeva (2014) Diversity in Phytochemical Composition and Antioxidant Capacity of Dent, Flint, and Specialty Corns. Cereal Chemistry, 91 (6). pp. 639-645. ISSN 0009-0352