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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

Journal Article

Journal article

Bioactive phytonutrients (omega fatty acids, tocopherols, polyphenols), in vitro inhibition of nitric oxide production and free radical scavenging activity of non-cultivated Mediterranean vegetables  [2011]

Conforti, Filomena; Marrelli, Mariangela; Carmela, Colica; Menichini, Federica; et al.

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Hydroalcoholic extracts from 18 non-cultivated vegetables traditionally consumed in Southern Italy were tested for their free radical scavenging activity (FRSA) in the DPPH (1,1-diphenyl-2-picrylhydrazil radical) screening assay and for their in vitro inhibition of nitric oxide (NO) production. The strongest activity was shown for Rubus caesius (leaves), Mentha spicata subsp. glabra (leaves) and Origanum vulgare subsp. viridulum (stems and leaves) with IC₅₀ values of 5, 6, 8μg/ml, respectively. Extracts from non-cultivated Foeniculum vulgare subsp. piperitum (seeds), Amaranthus retroflexus (leaves) and M. spicata subsp. glabra (leaves) showed high in vitro inhibition of nitric oxide production, with an activity comparable to a reference drug, indomethacin. A significant cytotoxic effect was shown for the seeds of F. vulgare subsp. piperitum. A. retroflexus (leaves) presented the highest content in linoleic acid. R. caesius and M. spicata subsp. glabra had relatively high polyphenols content, 482 and 334mg/g of extract, respectively.

来自期刊

Food chemistry

ISSN : 0308-8146