title: Profiling of bioactive compounds in cultivars of Runner and Valencia peanut market-types using liquid chromatography/APCI mass spectrometry.
abstract: 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 m/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 (0.03mg/100g) 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±0.04mg/100g) in Valencia cultivars making them a better source of this phytochemical.
authors.affiliation: Department of Food and Animal Sciences, Alabama A&M University, PO Box 1628, Normal, AL 35762, United States.
authors.forename: Yvonne
authors.initials: Y
authors.lastname: Chukwumah
authors.affiliation: Department of Food and Animal Sciences, Alabama A&M University, PO Box 1628, Normal, AL 35762, United States. Electronic address: lloyd.walker@aamu.edu.
authors.forename: Lloyd
authors.initials: L
authors.lastname: Walker
authors.affiliation: Department of Chemistry, University of Alabama in Huntsville, 301 Sparkman Drive, Huntsville, AL 35899, United States.
authors.forename: Bernhard
authors.initials: B
authors.lastname: Vogler
authors.affiliation: Department of Food and Animal Sciences, Alabama A&M University, PO Box 1628, Normal, AL 35762, United States.
authors.forename: Martha
authors.initials: M
authors.lastname: Verghese
mesh_terms: D010367:Arachis / Q000737:chemistry*; D002853:Chromatography, Liquid / Q000379:methods*; D013058:Mass Spectrometry / Q000379:methods*; D011794:Quercetin; D000077185:Resveratrol; D013267:Stilbenes
chemical_list: D013267:Stilbenes; D011794:Quercetin; D000077185:Resveratrol
keywords: Groundnut; Isorhamnetin; LC–MS; Peanut (Arachis hypogaea L.); Phytochemical profile; Quercetin; Runner; Valencia