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Antonios Petridis, Magdalene Koukourikou, Thomas Sotiropoulos and Dimitrios Stylianidis

hand, plants produce a wide range of compounds with strong antioxidant activity such as vitamins C and E, flavonoids, and other phenolic compounds to protect themselves from pests and diseases ( De Gara et al., 2003 ; Garcia-Alonso et al., 2004

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Shiow Y. Wang, Kim S. Lewers, Linda Bowman and Min Ding

nematodes ( Hancock et al., 2001b , 2002 ; Pinkerton and Finn, 2005 ). The objectives of this study are 1) to identify wild strawberry genotypes with high anticancer and antioxidant activities for use in cultivar development, 2) to evaluate the

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Marcia Vizzotto, Luis Cisneros-Zevallos, David H. Byrne, David W. Ramming and W.R. Okie

( Vaccinium L.) ( Prior et al., 1998 ) and potatoes ( Solanum tuberosum L.) ( Reyes et al., 2004 ) to select genotypes with higher phenolic content and antioxidant activity. Likewise, the Prunus L. breeding program at Texas A & M University with the

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Malkeet S. Padda and D.H. Picha

leaves are consumed as a leafy vegetable in many parts of the world ( Villareal et al., 1982 ). Both sweetpotato roots and leaves are considered to be rich sources of phenolic compounds, which contribute toward the antioxidant activity of sweetpotato

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Kang Mo Ku and John A. Juvik

and year-to-year variation in environment growing conditions affect total phenolics, flavonoid concentrations, and antioxidant activity of broccoli floret and kale leaf tissues. To our knowledge, this is the first investigation of MeJA application to

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J.O. Kuti

Flavonoid content and antioxidant activity in peel and pulp samples of four different cactus pear fruit varieties were investigated. Major cactus fruit flavonoids were quercetin, kaempferol, and isorhamnetin. Greater amount of quercetin was found in the pulp compared with the peel samples in all varieties examined. Both kaempferol and isorhamnetin were found in at least three of the varieties (Opuntia ficus-indica; O. lindheimeri; O. streptacantha) exclusively in the peel samples. Generally, pulp tissue samples of all the cactus fruit varieties contained greater ascorbic acid, glutathione, alpha-tocopherol and beta-carotene and antioxidant activities than the peel tissue samples. Total flavonoids correlated well with antioxidant activity (r 2 = 0.89). Ascorbic acid had the highest antioxidant activity, followed by glutathione, beta-carotene, and alpha-tocopherol on equimolar basis.

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Md. Aktar Hossain, Sooah Kim, Kyoung Heon Kim, Sung-Joon Lee and Hojoung Lee

allelopathy. Flavonoids also contain chemical structural elements that are responsible for antioxidation, and their antioxidant activities have been well established biochemically. Lemon balm, Melissa officinalis , is a member of the mint family that is

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Malkeet S. Padda and David H. Picha

postharvest processing and storage conditions. Previous studies indicated an increase in total phenolic content and antioxidant activity in fresh-cut carrots, potatoes, jicama roots, and lettuce ( Aquino-Bolanos et al., 2000 ; Cantos et al., 2001 , 2002

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Valtcho D. Zheljazkov, Tess Astatkie and Vicki Schlegel

, composition, and bioactivity. We hypothesized that DT may affect essential oil composition, antioxidant activity, and, hence, may be used as a tool for obtaining pine oil with desirable characteristics to meet specific market requirements. The objective of

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Shiva Ram Bhandari, Bo-Deul Jung, Hum-Young Baek and Young-Sang Lee

., 2006 ). A number of phytochemicals that are present in peppers such as phenolics, vitamin C, vitamin E, and carotenoids may contribute to antioxidant activity and consequently show various pharmacological and nutritional activities ( Balasundram et al