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Shirin Shahkoomahally and Asghar Ramezanian

(2%) + HW (15 min)-treated fruit. Fruits dipped in HW + Ca showed a significant difference with respect to total phenolics, which was associated with lower PPO activity. PPO is involved in the oxidation of polyphenols into quinones ( Liu et al., 2005

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Zoltán Pék, Péter Szuvandzsiev, András Nemenyi, Lajos Helyes, and Andrea Lugasi

acidic hydrolysis with HCl at 65 °C for 5 min following the Schoorl-Regenbogen method ( Commission Directive, 1979 ). The total polyphenols were analyzed with the Folin-Denis method according to the AOAC official protocol 952.03 ( AOAC, 1990 ). The

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Jun Tang, Kang-Di Hu, Lan-Ying Hu, Yan-Hong Li, Yong-Sheng Liu, and Hua Zhang

water added. Reducing sugar was determined spectrophotometrically at 540 nm and the results are expressed as milligrams per gram fresh weight (FW). Determination of guaiacol peroxidase, polyphenol oxidase, lipoxygenase activities, and malondialdehyde

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Ting Min, Li-Fang Niu, Jun Xie, Yang Yi, Li-mei Wang, You-wei Ai, and Hong-xun Wang

), polyphenol oxidase (PPO), and peroxidase (POD) activity of fresh-cut ‘Wuzhi 2’ lotus root. PAL, PPO, and POD have been proposed as being involved in enzymatic browning. Fresh-cut lotus root was packaged by vacuum packaging [VP (circles)] and atmospheric

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Shugang Zhao, Jiamin Niu, Linying Yun, Kai Liu, Shuang Wang, Jing Wen, Hongxia Wang, and ZhiHua Zhang

sclereid was the longest of all cultivars. The other cultivars had comparable sclereid sizes. Lignin, cellulose, and polyphenol contents of the shell. Shell differentiation involves the transformation of the parenchymal cells of the endocarp into stone

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Ting-Ting Li, Zhi-Rong Li, Kang-Di Hu, Lan-Ying Hu, Xiao-Yan Chen, Yan-Hong Li, Ying Yang, Feng Yang, and Hua Zhang

), guaiacol peroxidase (POD) ( C ), lipoxygenase (LOX) ( D ), and polyphenol oxidase (PPO) ( E ) in kiwifruit. The activities were determined daily on Days 0 to 6 in kiwifruit treated with water, ethylene, H 2 S, or in combination at 25 °C. Control: H 2 O; H 2

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Adam D. Karl, Michael G. Brown, Sihui Ma, Ann Sandbrook, Amanda C. Stewart, Lailiang Cheng, Anna Katharine Mansfield, and Gregory M. Peck

juice sample. The SSC, pH, TA, YAN (primary amino nitrogen and ammonium ion), and total polyphenol concentrations (using the Folin Ciocalteu assay) were measured for each juice sample. The SSC was measured with an Atago PAL-1 digital refractometer (Tokyo

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Adam D. Karl, Michael G. Brown, Sihui Ma, Ann Sandbrook, Amanda C. Stewart, Lailiang Cheng, Anna Katharine Mansfield, and Gregory M. Peck

juice attributes, such as total polyphenol, soluble solid, and titratable acid concentrations. Materials and Methods Orchard site. This study was conducted in 2017 and 2018 at a Cornell University Agricultural Experiment Station research orchard in

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Sara Atrash, Asghar Ramezanian, Majid Rahemi, Reza Mostofizadeh Ghalamfarsa, and Elhadi Yahia

fruit. Fig. 8. Effect of savory essential oil at concentrations of 800 μL·L −1 (EO800) and 1000 μL·L −1 (EO1000), hot water at 40 (HW40) and 50 °C (HW50), and gum arabic at 2.5 (GA2.5) and 5% (GA5) on polyphenol oxidase enzyme activity (U·min −1 ·g −1

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Yuko Yoshizawa, Kenji Sakurai, Satoru Kawaii, Masayoshi Asari, Junichi Soejima, and Noboru Murofushi

Aqueous ethanol extracts prepared from 19 apple (Malus ×domestica Borkh.) cultivars were studied to explore their antiproliferative activity. Half of them showed strong inhibition on proliferation of human leukemic HL-60 cells, while the others were weak. Total polyphenols, 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, and total anthocyanins were measured and the results indicated that the antiproliferative activity was more strongly correlated to the polyphenols and radical scavenging activity than to the anthocyanin content. Several polyphenols in `Jonathan' were identified and quantified by high-performance liquid chromatography (HPLC) analysis. Among those compounds found during HPLC, catechin and epicatechin seemed partially responsible for HL-60 antiproliferation. A careful examination on parentage of the apple cultivars tested revealed that `Jonathan' and its progeny showed high antiproliferation toward HL-60. This is the first observation about the relationship between antiproliferative activity and parentage of apples, and the information would be useful to create new apple cultivars that posses more anticancer potential.