Journal
FOOD CHEMISTRY
Volume 132, Issue 1, Pages 525-531Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2011.10.050
Keywords
Peanut (Arachis hypogaeo L.); Groundnut; Runner; Valencia; Phytochemical profile; LC-MS; Quercetin; Isorhamnetin
Funding
- Alabama Agricultural Experimental Station, Alabama Agricultural and Mechanical University, Normal, AL
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Peanuts are classified into four market-types (Runners, Spanish, Virginia and Valencia). Studies on their phytochemical composition have focused mainly on market-types other than Valencia. The objectives of this study are to evaluate the phytochemical composition of cultivars of Valencia and Runner market-types. Extracts of 25 peanut cultivars of Runner and Valencia market-types were analysed using HPLC-DAD-MS analysis. Results showed major differences in UV profile of the market-types. A major peak with rn/z 317 identified as isorhamnetin was present only in Valencia cultivars while its glycoside (isorhamnetin-3-O-rutinoside) having m/z 625 was identified in both market-types. Genistein, daidzein, rutin, quercetin and trans-resveratrol were also identified and quantified. Genistein and daidzein concentrations (0.03 mg/100 g) were similar in both market-types. trans-Resveratrol and rutin were significantly (p < 0.05) higher in Runner cultivars while quercetin was 10-fold higher (0.60 +/- 0.04 mg/100 g) in Valencia cultivars making them a better source of this phytochemical. (C) 2011 Elsevier Ltd. All rights reserved.
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