Analysis of cyclopropenoid and cyclopropanoid acids in fats and oils View Full Text


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Article Info

DATE

1965-04

AUTHORS

F. C. Magne

ABSTRACT

The analysis of cyclopropenoid acids may be considered, from a historical standpoint, to have started with the discovery of the Halphen test. Although this test as orginally conceived was utilized as a means of detecting adulteration of premium edible oils with cottonseed oil, it has since been shown to be a characteristic test for cyclopropenoid fatty acids and has been adapted with various modifications as a quantitative colorimetric test for these substances. More recently, spectrophotometric methods particularly in the IR region have been applied to the analysis of these substances. The 9.8 µ band, characteristic of the cyclopropane, and the 9.91 µ band, characteristic of the cyclopropene group, as well as the 11.0 µ band, characteristic of some of the noncyclic degradation derivatives, have been utilized. Gasliquid chromatography (GLC) has been applied to the methyl esters of cyclopropanoid and hydrogenated cyclopropenoid acids. The reactivity of the cyclopropene ring toward hydrohalogens has been the basis of several analytical methods developed for use with cyclopropene acid-containing oils. Both aqueous and nonaqueous solutions of hydrohalogens have been employed. The hydrohalogenation methods are the most precise methods currently available for these analyses but only GLC has the inherent potential of identifying the specific cyclopropenoid or cyclopropenoids involved. More... »

PAGES

332-336

References to SciGraph publications

  • 1963-12. Methods for the determination of cyclopropenoid fatty acids. II. A stepwise hydrogen bromide titration method for cyclopropenid and epoxy derivatives in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1962-10. Analyses of seed samples from 113 plant families in ECONOMIC BOTANY
  • 1962-03. Sterculic derivatives and pink egg formation in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1943-12. The preparation of purified methyl linoleate by chromatography in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1955-07-09. Structure of Sterculic Acid and other Analogous Fatty Acids in NATURE
  • 1961-11. Nuclear magnetic resonance in lipid analysis in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1956-08. Sterculic Acid and its Halphen Reaction in NATURE
  • 1960-12. Epoxy acid in seed oils ofMalvaceae and preparation of (+)threo-12,13-Dihydroxyoleic acid in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1956-01. A Biologically Active Fatty-acid in Malvaceae in NATURE
  • 1906-08. Zur Kenntnis der Halphen'schen Reaktion auf Baumwollsamenöl in EUROPEAN FOOD RESEARCH AND TECHNOLOGY
  • 1961-12. Characterization of cyclopropenoid acids in selected seed oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1960-07. Differentiation of hydrogen bromide-reactive acids in seed oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1957-04. Malvalic Acid and its Structure in NATURE
  • 1957-09. Composition of the seed oil of sterculia foetida, Linn in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1959-07. Search for new industrial oils. I. Selected oils from 24 plant families in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1960-09. Search for new industrial oils. IV in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1961-04. Occurrence of Cyclo-Propene Acids in Some Plants of the Order Malvales in NATURE
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    URI

    http://scigraph.springernature.com/pub.10.1007/bf02540141

    DOI

    http://dx.doi.org/10.1007/bf02540141

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1005502913


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