Quercetin and isorhamnetin in sweet and red cultivars of onion (Allium cepa L.) at harvest, after field curing, heat treatment, and storage

Journal of Agricultural and Food Chemistry
Marie E OlssonIngunn Molund Vågen

Abstract

Effects of heat treatment and storage on quercetin and isorhamnetin content, major and minor components of isorhamnetin, and quercetin glucosides and aglycone, were investigated in onion (Allium cepa L.). The sweet onion 'Recorra' and red onions 'Hyred' and 'Red Baron' were cultivated in the south part of Norway and thereafter stored for eight months. The onions were either not field dried, but stored directly, or field dried and then stored, or field dried and then heat treated before storage. Neither storage nor heat treatment caused any major differences in total flavonol content in the investigated sweet onion as well as in the red onion cultivars. The two major quercetin glucosides differed in their changes in content during storage; quercetin-4'-glucoside did not show any consistent changes during storage in the two red cultivars, independent of treatment, whereas quercetin-3,4'-diglucoside increased significantly by 30 or 51%, respectively, during storage in 'Hyred' and 'Red Baron' in the 24 h heat treated onions. Isorhamnetin-4'-glucoside, which might possibly be of special interest from a human health point of view, was present at 2-3 times higher amount in the sweet onion cultivar than in the two red cultivars. Some o...Continue Reading

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Citations

May 27, 2011·Journal of Agricultural and Food Chemistry·Xiaonan LuBarbara A Rasco
Jul 10, 2012·Nutrition·Soo-Wang HyunYi-Sook Jung
Apr 17, 2012·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Eun-Ju YangKyung-Sik Song
Jul 21, 2014·Food Chemistry·Tuula H SoininenJouko J Vepsäläinen
Aug 4, 2012·Nutrition·Ryszard PlutaMirosław Jabłoński
Mar 15, 2011·Journal of Agricultural and Food Chemistry·Sarah Steimer, Per J R Sjöberg
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Sep 24, 2020·Antioxidants·Damini KothariSoo-Ki Kim
Mar 1, 2020·International Journal of Molecular Sciences·Kristina FerenczyovaMonika Bartekova
May 1, 2017·Reviews in Medical Virology·Enkhtaivan GansukhJudy Gopal
Mar 24, 2018·Journal of Food and Drug Analysis·Kavita SharmaYong Rok Lee
Feb 6, 2021·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·Muhammad Shoaib TahirWei Zhang
Apr 26, 2020·Food Research International·Feiyue RenCamila A Perussello

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