title: Evaluation of antioxidant activity of leafy vegetables and beans with myoglobin method.
abstract: KEY MESSAGE                 :                                     Antioxidant activity of seven leafy vegetables and four beans against five reactive oxygen species and reactive nitrogen species was clearly characterized with a protocol using myoglobin as a reporter probe.                                                                  Antioxidant activity of seven leafy vegetables and four beans against peroxyl radical, hydroxyl radical, hypochlorite ion, and peroxynitrite ion has been measured using myoglobin as a reporter probe (myoglobin method). Conventional DPPH method was also used to evaluate antioxidant activity of the samples. Difference of activity against different reactive oxygen species (ROS) and reactive nitrogen species (RNS) was characterized by plotting the data in a 5-axe cobweb chart. This plot clearly showed the characteristics of the antioxidant activity of the leafy vegetables and the beans. The samples examined in this work were categorized into four groups. (1) The samples showed high antioxidant activity against all ROS and RNS: daikon sprout, spinach, Qing-geng-cai, and onion. (2) The samples showed high antioxidant activity against peroxyl radical: red bean and soy bean. (3) The samples showed high antioxidant against hypochlorite ion: broccoli floret, cabbage, and Chinese cabbage. (4) The samples showed weak antioxidant activity against all ROS and RNS: cowpea and common beans. Our protocol is probably useful to characterize antioxidant activity of the crops of different cultivars, the crops obtained in different growing environments and growing seasons, the crops harvested at different age, and the crops stored in the different conditions, as well as the changes of activity during cooking process of the crops.
authors.affiliation: Department of Biosphere Sciences, School of Human Sciences, Kobe College, 4-1 Okadayama, Nishinomiya City, Hyogo 662-8505, Japan. terasima@mail.kobe-c.ac.jp
authors.forename: Masaaki
authors.initials: M
authors.lastname: Terashima
authors.forename: Akiko
authors.initials: A
authors.lastname: Fukukita
authors.forename: Riho
authors.initials: R
authors.lastname: Kodama
authors.forename: Haruka
authors.initials: H
authors.lastname: Miki
authors.forename: Mayuko
authors.initials: M
authors.lastname: Suzuki
authors.forename: Maya
authors.initials: M
authors.lastname: Ikegami
authors.forename: Noriko
authors.initials: N
authors.lastname: Tamura
authors.forename: Akari
authors.initials: A
authors.lastname: Yasuda
authors.forename: Mami
authors.initials: M
authors.lastname: Morikawa
authors.forename: Saki
authors.initials: S
authors.lastname: Matsumura
mesh_terms: D000975:Antioxidants / Q000378:metabolism*; D001713:Biphenyl Compounds / Q000494:pharmacology; D007887:Fabaceae / Q000187:drug effects / Q000378:metabolism*; D006997:Hypochlorous Acid / Q000378:metabolism; D009211:Myoglobin / Q000378:metabolism; D010084:Oxidation-Reduction; D018384:Oxidative Stress; D010545:Peroxides / Q000378:metabolism; D010851:Picrates / Q000494:pharmacology; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism; D026361:Reactive Nitrogen Species / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism; D014675:Vegetables / Q000187:drug effects / Q000378:metabolism*
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D009211:Myoglobin; D010545:Peroxides; D010851:Picrates; D026361:Reactive Nitrogen Species; D017382:Reactive Oxygen Species; C049375:perhydroxyl radical; D006997:Hypochlorous Acid; C004931:1,1-diphenyl-2-picrylhydrazyl