Procyanidin Concentrations and H-ORAC of Apples Cultivated in Japan

Administration of Apple Polyphenol Supplements for Skin Conditions in Healthy Women: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial

“…8-OHdG [30] and thymine dimers [31] have been reported to stimulate melanogenesis in melanocytes. In our previous study, we reported that apple procyanidin concentrations were significantly correlated with hydrophilic oxygen radical absorbance capacity (H-ORAC) values (r = 0.8284, p < 0.0001) in 30 varieties of apple cultivars [25]. SOD-like activity measurement using WST-1 showed that apple procyanidins have strong SOD-like activity, although the relationship between polymerization degree of apple procyanidins was not clearly observed.…”

“…Procyanidins have been suggested to have strong antioxidative activity [18,19] and various physiological functions [20][21][22][23][24], as demonstrated with in vitro molecular investigations and in vivo animal studies. Apples are widely consumed throughout the world and are an important source of procyanidins in the human diet [17,25]. Apples contain different structural subclasses, including phenolic acids and flavonoids, comprising six major classes: phenolcarboxylic acids (e.g., chlorogenic acid), anthocyanins (e.g., cyanidin glycosides), flavonols (e.g., quercetin glycosides), dihydrochalcones (e.g., phloridzin), flavan-3-ols (e.g., catechin), and procyanidins (e.g., procyanidin B2) ( Figure S1).…”

Simultaneous estimation of scavenging capacities of peach extract for multiple reactive oxygen species by fluorescence fingerprint method

“…4.6 Â 250 mm; 5 mm) at 30°C by the method of Obara, Masumoto, Ono, Ozaki, and Shoji (2016). Mixtures of acetonitrile and acetic acid (mobile phase A, CH 3 CN/HOAc, 98:2, v/v) and methyl alcohol, H 2 O and acetic acid (mobile phase B, MeOH/H 2 O/ HOAc, 95:3:2, v/v/v) were used as mobile phases.…”

Proximate, Anthocyanin and Oligomeric Proanthocyanidin Compositions of Cowpeas [Vigna unguiculata (L.) Walp] Cultivated in Southwest Japan

“…Oligomeric proanthocyanidin analysis of grain legume extract: Oligomeric proanthocyanidins were analyzed by HPLC equipped with a fluorescence detector according to the method reported by Obara et al (2016). Identification was performed by comparing retention times with oligomeric proanthocyanidin standards (monomer to heptamer) isolated from apple as described previously (Shoji et al, 2006).…”