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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

Effects of different maturity periods and processes on nutritional components of rose hip (Rosa canina L.)  [2010]

Türkben, Cihat; Uylaşer, Vildan; İncedayı, Bige; Çelikkol, Işıl;

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Rosa canina L. fruits, known as brier rose or rose hip, grow naturally in Bursa (Turkey) and its environs. In this study, rose hips were harvested at two different maturity periods. Some of them were then dried naturally and others processed traditionally as rose hip marmalade. Phenolic acids (ellagic acid, ferulic acid, caffeic acid, p-coumaric acid, p-hydroxybenzoic acid, protocatechuic acid), ascorbic acid, flavonols (quercetin, kaempferol, myricetin, (+)-catechin) were detected with LC-ESI-MS/MS (Liquid Chromatography Electrospray Ionization Mass Spectrometry). Mineral compounds (Na, Mg, K, Ca, P) were detected using ICP-OES (Inductively Coupled Plasma Optic Emission Spectroscopy) in fresh and processed rose hip samples. The lycopene level was also determined in the samples. Statistical differences were found in all parameters related to the maturity and processing methods in the observed samples. It was found that quercetin and (+)- catechin were the main phenolic acids.

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Journal of food, agriculture & environment

ISSN : 1459-0255