Relation between polyphenol profile and antioxidant capacity of different Argentinean wheat varieties. A Boosted Regression Trees study.

PODIO NATALIA S.; BARONI, MARÍA V.; WUNDERLIN, DANIEL A.

FOOD CHEMISTRY

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2017 vol. 232 p. 79 - 88

0308-8146

We report the polyphenol profile and antioxidant capacity (AC)of 12 Argentinean wheat varieties from different regions. The polyphenolprofile was studied by HPLC-MS. The AC was measured by TEAC and FRAP.Twenty five polyphenols were identified. ACA 315 and KLEIN GUERREROvarieties showed the highest content of polyphenols, whereas BIOINTA3004, KLEIN CAPRICORNIO and LE 2330 showed the lowest one. ACA 315presented the highest AC, while BIOINTA 3004 and KLEIN CAPRICORNIO showedthe lowest one. Boosted Regression Trees (BRT) analyses helped findingsignificant correlations between AC and polyphenol profile, beinghydroxybenzoic acid diglucoside, tryptophan, chrysoeriol-6,8-di-Cpentosideand isomers 4, 5, 9 and 12 of diferulic acids key compounds toexplain the observed AC. To our knowledge, this is the first report onthe interaction between the environment and wheat genotypes evaluated byBRT, showing how the whole polyphenol profile can explain the AC inwheat.