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Carolina A. Torres, Omar Hernandez, Maria A. Moya-León, Ivan Razmilic and David R. Rudell

areas with standard curves using authentic standards purchased from Merck (Darmstadt, Germany) and Extrasynthese (Lyon, France). Phenolic compounds. Total phenolic content was estimated using the Folin–Ciocalteu reagent and ethanolic tissue extractions

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Michael P. Dzakovich, Celina Gómez, Mario G. Ferruzzi and Cary A. Mitchell

grown outdoors to establish a “garden-grown” quality benchmark in Expt. 1. Tomatoes were then tested using several physicochemical quality metrics including total soluble solids, citric/ascorbic acid content, pH, total phenolics, and prominent flavonoids

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Chenping Xu and Beiquan Mou

determined after 4.5 min-reaction. Trolox (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxyl acid) equivalent standard curve was prepared. For total phenolics content, 0.1 mL extract was added to a mixture of 0.15 mL H 2 O and 0.75 mL of 1:10 diluted Folin

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Bo-Ling Liu, Zhi-Bin Fan, Ze-Qun Liu, Xun-Hong Qiu and Yan-Hong Jiang

, the extracts were centrifuged at 7000 rpm (D-37520; Heraeus-Thermo, Osterode, Germany) for 10 min and the supernatant was employed in phytochemical analysis. The total phenol content of the extracts was evaluated following the theory of Folin

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

equatorial region of the fruit ( Navarro-Tarazaga et al., 2008 ). Folin–Ciocalteu reagent was used to measure the total phenolic content of pulp tissue and the results were expressed as fresh weight basis. Seven hundred microliter of extract mixed with 900 μL

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Chieri Kubota, Mark Kroggel, Mohammad Torabi, Katherine A. Dietrich, Hyun-Jin Kim, Jorge Fonseca and Cynthia A. Thomson

Agricultural Center for analyses of total phenolics compounds and ascorbic acid (vitamin C). The analytical methods for total phenolics compounds (gallic acid equivalent) and ascorbic acid concentrations followed the methods described by Kim et al. (2007

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Derek W. Barchenger, John R. Clark, Renee T. Threlfall, Luke R. Howard and Cindi R. Brownmiller

) analysis, samples were filtered through 0.45-μm filters (Whatman PLC, Maidstone, U.K.). Total phenolics analysis. Total phenolics were measured using the Folin-Ciocalteu assay (Slinkard and Singleton, 1977) on a diode array spectrophotometer (8452A; Hewlett

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Togo Shinohara, Shinsuke Agehara, Kil Sun Yoo and Daniel I. Leskovar

Texas A&M Soil, Water and Forage Testing Laboratory in College Station, TX. Sample preparation for phenolic compounds. Total phenolics, chlorogenic acid, and cynarin content of artichoke heads were determined during harvest at three times (separated as

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Ibrahim I. Tahir and Hilde Nybom

(1993) and results expressed as mg·kg −1 dry weight. Total phenolics were determined with the Folin–Ciocalteau method as modified by Dewanto et al. (2002) . One gram of lyophilized and milled apple flesh was extracted in 20 mL 70% ethanol overnight on

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Daniela Borgognone, Mariateresa Cardarelli, Luigi Lucini and Giuseppe Colla

.01, and 0.001. Regression analyses were conducted to identify relationships between FRAP and total phenols, total flavonoids, and target polyphenols in cardoon leaves. Results Leaf dry biomass. The addition of different concentrations of NaCl and CaCl 2