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Determining sugar composition of food gum polysaccharides by HPTLC

Autor: L. W. Doner

Publikováno v: Chromatographia. 53:579-581

Most commercially important food gums, including gum arabic, guar gum, and carrageenan are polysaccharides which consist of multiple sugars, including uronic acids. For the first time, the sugars in these and other gums were determined by comparison

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef060460103eca1c0092b5593934eb37
https://doi.org/10.1007/bf02491627

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Effect of Vesicular–Arbuscular Mycorrhizal Fungi on Rooting of Sciadopitys verticillata Sieb & Zucc. Cuttings

Autor: P. E. Pfeffer, L. W. Doner, T. J. Dymant, G. Becard, David D. Douds, W. M. Kayser

Publikováno v: HortScience. 30:133-134

A vesicular-arbuscular mycorrhizal fungus in a peat-based medium signifi- cantly increased survival, callus development, and rooting percentage of Sciadopitys verticillata cuttings over noninoculated cuttings. The presence of a nurse host plant for t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::266373f7c8573e9a21de790427b0777b
https://doi.org/10.21273/hortsci.30.1.133

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Mass spectrometric 13C/12C determinations to detect high fructose corn syrup in orange juice: collaborative study

Autor: L W, Doner, D D, Bills, O, Carro, R, Drimmie, P, Fritz, J N, Gearing, C, Hillaire-Marcel, P L, Parker, F M, Reeseman, B N, Smith, H, Ziegler

Publikováno v: Journal - Association of Official Analytical Chemists. 65(3)

The 13C/12C ratios in orange juice are sufficiently uniform and different from those in high fructose corn syrup (HFCS) so that the addition of HFCS to orange juice can be detected. HFCS averages -9.7% (parts per thousand) delta 13C, orange juice ave

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::f79c55b53baac3e27d931bf2a5e57e7a
https://pubmed.ncbi.nlm.nih.gov/7096240

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Gas-liquid chromatographic test for honey adulteration by high fructose corn sirup

Autor: L W, Doner, J W, White, J G, Phillips

Publikováno v: Journal - Association of Official Analytical Chemists. 62(1)

A gas-liquid chromatographic (GLC) method has been developed to detect the addition to honey of high fructose corn sirup (HFCS). Samples are derivatized directly with trimethylsilane, cholestane is added as an internal standard, and the levels of mal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::3f184c149be176004f131fecea6b1c25
https://pubmed.ncbi.nlm.nih.gov/422500

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Stable Carbon Isotope Ratios for Detecting Added Sugars in Orange and Apple Juices and Added Citric Acid in Lemon Juices

Autor: L. W. Doner

Publikováno v: Analysis of Nonalcoholic Beverages ISBN: 9783642833458

The adulteration of many foods, including the fruit juices, with relatively inexpensive substitutes, has long been common practice in many parts of the world. Such undeclared additions are especially prevalent during periods of high demand, when ther

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d7659f4ef13f9c53dee8b0c68500fde
https://doi.org/10.1007/978-3-642-83343-4_7

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Charcoal column/thin layer chromatographic method for high fructose corn sirup and spectrophotometric method for hydroxymethylfurfural in honey: collaborative studies

Autor: J W, White, I, Kushnir, L W, Doner

Publikováno v: Journal - Association of Official Analytical Chemists. 62(4)

A new spectrophotometric method is described for determining hydroxymethylfurfural in honey in which interfering background absorption of honey is corrected for by use of a bisulfite-treated sample as blank. Two procedures for detecting high-fructose

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::3d74d7d1ce2ec720b73d213dc35068dd
https://pubmed.ncbi.nlm.nih.gov/500541

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