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

date sample to measure nutraceuticals including ORAC and levels of total phenolics, total anthocyanins, total ellagitannins, total flavonols, and resveratrol by methods previously described in Cho et al. (2004 , 2005) , Hager et al. (2008) , and

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Andrés Olivos, Scott Johnson, Qin Xiaoqiong and Carlos H. Crisosto

-RAD Laboratories, CA). The reactions were linear within the time range. PPO activity was expressed as ΔA420 nm·min −1 ·g −1 fresh weight. Total phenolics and antioxidant extraction. A sample of 0.4 g finely ground fruit powder was extracted with 1 mL 80% methanol

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Ki-Ho Son, Jin-Hui Lee, Youngjae Oh, Daeil Kim, Myung-Min Oh and Byung-Chun In

treatment were used to calculate the planting density and the total phenolic content per unit area (square meters). Secondary metabolites Lyophilized shoots were ground using a blender (MFM-002H; Hibell, Hwaseong, Korea) and stored at 4 °C until they were

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Ferit Celik, Sezai Ercisli, Suzan O. Yilmaz and Attila Hegedus

, total carotenoid, total phenol, and antioxidant activity. Fruit weight was measured by using a digital balance with a sensitivity of 0.001 g. Flesh per seed ratio were counted considering fruit and seed weights. Fruit shape index were counted by the

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Valentina Schmitzer, Robert Veberic, Gregor Osterc and Franci Stampar

compounds were expressed as micrograms per gram DW. Determination of total phenolic content. Extraction of petal samples for determining total phenolics was done as described above, but without the addition of BHT. The total phenolic content (TPC

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Anne Frary, M. Ali Keçeli, Bilal Ökmen, Hasan Ö. Şιğva, Ahmet Yemenicioğlu and Sami Doğanlar

, pepper was found to be a good source of phenolic compounds, ranking fourth in total phenolic content after broccoli, spinach, and onion ( Chu et al., 2002 ). In addition to their antioxidant role, phenolic compounds contribute to fruit color, flavor, and

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Aekaterini N. Martini, Maria Papafotiou and Stavros N. Vemmos

vitro and the pre-existing phenolic content of the explants ( Yu and Meredith, 1986 ). Shoot tip explants of ‘Koroneiki’ olive trees exhibited higher browning rates together with higher total phenol and polyphenoloxidase activity compared with single

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Juan C. Díaz-Pérez, Dan MacLean, Smiljana Goreta, Sarah Workman, Erick Smith, Harwinder Singh Sidhu, Gunawati Gunawan, Anthony Bateman, Jesús Bautista, William Lovett, Maja Jukić Špika, Gvozden Dumičić and Mira Radunić

. Titratable acidity was expressed as the percentage of malic acid present in juice. Total phenols were determined as a measure of the total antioxidant capacity following the Follin-Ciocalteau method ( Singleton et al., 1999 ), and data were expressed as

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Valentina Schmitzer, Maja Mikulic-Petkovsek, Franci Stampar and Vlasta Cunja

calculations, and mass spectrometry specifications. Table 2. A list of flavonols identified in four hybrid primrose cultivars and their MS specifications. Determination of total phenolic content. A similar protocol was used for the extraction of total phenols

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Desire Djidonou, Amarat H. Simonne, Karen E. Koch, Jeffrey K. Brecht and Xin Zhao

acid), carotenoids, and total phenolics. Materials and Methods Experimental design and fruit sampling. Tomato fruit were sampled from field experiments carried out at the University of Florida Suwannee Valley Agricultural Extension Center in Live Oak