Stable carbon isotope ratios for organic acids in commercial honey samples

被引：29

作者：

Kawashima, Hiroto ^{[1
]}

Suto, Momoka ^{[1
]}

Suto, Nana ^{[1
,2
]}

机构：

[1] Akita Prefectural Univ, Dept Management Sci & Engn, Fac Syst Sci & Technol, 84-4 Ebinokuchi, Yuri Honjyo, Akita 0150055, Japan

[2] Japan Automobile Res Inst, Energy & Environm Res Div, 2530 Karima, Tsukuba, Ibaraki 3050822, Japan

来源：

FOOD CHEMISTRY | 2019年 / 289卷

关键词：

Honey; Carbon isotope ratio; LC/IRMS; Glucose; Fructose; Organic acid; LIQUID-CHROMATOGRAPHY; MASS-SPECTROMETRY; ELEMENTAL ANALYZER; CHEMICAL-COMPOSITION; BOTANICAL ORIGIN; ADULTERATION; IDENTIFICATION; C-13/C-12; AUTHENTICITY; DISCRIMINATION;

D O I：

10.1016/j.foodchem.2019.03.053

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Stable carbon isotope ratios (delta C-13) for glucose, fructose, disaccharides, trisaccharides, and organic acids in 116 commercial honey samples were measured by LC/IRMS. On the basis of EA/IRMS and LC/IRMS authenticity criteria, 39 of the samples were judged to have been adulterated. The delta C-13 values for organic acids from pure honey, reported here for the first time, ranged from -33.6 to - 26.5 parts per thousand. The mean Delta delta C-13 (glucose-organic acids) value was +3.7 +/- 0.9 parts per thousand. Glucose and organic acid delta C-13 values were strongly correlated (R = 0.71, P < 0.001). Gluconic acid, the predominant organic acid in honey, has been reported to be produced via decomposition of glucose by bee glucose-oxidase and certain Gluconobacter spp. This fact was confirmed by isotope analysis.

引用

页码：49 / 55

页数：7

共 27 条

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