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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

Stable carbon isotope ratio analysis of honey: validation of internal standard procedure for worldwide application  [1998]

White, J.W. (Honeydata Corp., Navasota, TX.); Winters, K.; Martin, P.; Rossmann, A.;

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Stable carbon isotope ratio analysis (SCIRA) of honey for undeclared presence of cane or corn sugars has been available for 20 years. Its use with domestic and imported honeys is reviewed. Six years of data from the internal standard isotope ratio analysis (ISCIRA) method support its worldwide validity for honey analysis. The ISCIRA database of pure honeys has been increased from 64 U.S. samples to 224 by addition of data from Germany, United Kingdom, Mexico, Italy, and Spain. ISCIRA analyses of 131 commercial honeys from the United States, Mexico, and Spain found that 17 are adulterated. Analyses of 303 Chinese honeys proves that they should have carbon isotope values similar to honeys from other areas, contrary to claims that the observed differences are intrinsic because of the variability of environmental conditions and of plants used in honey production in China. Addition of corn or cane (C4) sugars to honeys in amounts that do not produce a delta 13C value greater than -23.5 per thousand for the mixture cannot be detected by the original 1978 SCIRA procedure. Such adulteration however is detected by ISCIRA procedure from the delta 13C value of the protein contained in the honey, which shows the isotopic composition of the honey before addition of C4 sugars. Forty-three percent of 98 honeys received in the United States in 1994-1997 with delta 13C -23.5 per thousand were suspected and found to be adulterated
From the journal
Journal of AOAC International (USA)
ISSN : 1060-3271

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
1999
Volume:
81
Issue:
3
Start Page:
610
End Page:
619
All titles:
"Stable carbon isotope ratio analysis of honey: validation of internal standard procedure for worldwide application"@eng
Other:
"references"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
1999
Volume:
81
Issue:
3
Start Page:
610
End Page:
619
All titles:
"Stable carbon isotope ratio analysis of honey: validation of internal standard procedure for worldwide application"@eng
Other:
"references"