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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.

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Journal Article

Journal Article

Betalainic and nutritional profiles of pigment-enriched red beet root (Beta vulgaris L.) dried extracts  [2011]

Nemzer, Boris; Pietrzkowski, Zbigniew; Spórna, Aneta; Stalica, Paweł; et al.

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Red beet root (Beta vulgaris L.) colourants (betalains) are available either as concentrates produced by evaporating beet juice under vacuum, or as powders made by spray-drying a concentrate. The degradation of the pigments is dependent upon temperature, duration of heat treatment, pH and water activity of a product. Recently, a new proprietary method of large-scale chromatographic purification of red beet root extract has been discovered and developed that allows the production of more concentrated betalain formulations. In order to trace the betalainic compositions of the new products in comparison to the currently in-use spray-, air- and freeze-dried concentrates, a chromatographic study on betalains and their degradation derivatives analysed by LC-DAD-ESI-MS/MS was performed. Additionally, nutritional characterisation of the extracts was accomplished. Besides the most prominent betanin/isobetanin, elevated levels of neobetanin, which previously had been frequently detected in red beet roots, were also observed in the product prepared by the new method. The principal betanin/isobetanin pigments measured spectrophotometrically, comprised a major portion of the total betalain content (41%), the highest concentration of betalains reported in industrial products to date. The presence of other decarboxylated and dehydrogenated betanin derivatives in the new products is also discussed.
From the journal
Food chemistry
ISSN : 0308-8146

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
127
Issue:
1
Start Page:
42
End Page:
53
Publisher:
[Amsterdam]: Elsevier Science
All titles:
"Betalainic and nutritional profiles of pigment-enriched red beet root (Beta vulgaris L.) dried extracts"@eng
Other:
"Includes references"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
127
Issue:
1
Start Page:
42
End Page:
53
Publisher:
[Amsterdam]: Elsevier Science
All titles:
"Betalainic and nutritional profiles of pigment-enriched red beet root (Beta vulgaris L.) dried extracts"@eng
Other:
"Includes references"