A general rule for the assignment of the carbon-13 NMR peaks in fatty acid chains

Bengsch, E.; Perly, Bruno; Deleuze, Colette; Valero, Antonio

doi:10.1016/0022-2364(86)90311-2

Cited by 27 publications

(18 citation statements)

References 23 publications

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“…Table 3 shows the TI values measured for some triglycerides. The results agree with those previously reported by Bengsch et al (1986). The carbons relax increasingly slowly going from the central glycerol (C,!)…”

Section: Discussionsupporting

confidence: 95%

High resolution ¹³C NMR spectroscopy of rendered animal fats: degree of saturation of fatty acid chains and position on glycerol

Bonnet¹,

Denoyer²,

Renou³

1990

Int J of Food Sci Tech

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This work describes the application of high resolution 13C nuclear magnetic response (NMR) to the study of fatty acid composition in animal fats. It allows both the proportions of saturated, mono-and polyunsaturated fatty acid chains and the positional isomerism on glycerol to be determined. Olefinic carbon shifts gave quantitative information on the distribution of saturated, mono-and polyunsaturated fatty acid chains in animal fat triglycerides. Carbonyl carbon shifts gave information about the degree of saturation of fatty acid chains and their positions on the glycerol. The NMR values agree with the results from gas chromatographic analysis. KeywordsQuantitative triglyceride isomer analysis, unsaturated fat analysis.

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Section: Discussionsupporting

confidence: 95%

High resolution ¹³C NMR spectroscopy of rendered animal fats: degree of saturation of fatty acid chains and position on glycerol

Bonnet¹,

Denoyer²,

Renou³

1990

Int J of Food Sci Tech

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“…This was further confirmed by appropriate cross-peak correlations in 1 H-1 H COSY and HMBC spectra. Protons of methyl group that resonated at 0.880 ppm showed connectivity in HMBC spectrum with two methylene carbons (DEPT experiment), at δ 22.714 and 31.949 ppm, suggesting the existence of BCH 3 -CH 2 -CH 2 -^structural moiety (Bengsch et al 1986). Assignments of certain structural fragments of compounds from FR11 to appropriate signals in 1 H-and 13 C-NMR spectra, based on 2D homo-and heteronuclear-NMR experiments and available literature data, are shown in Fig.…”

Section: Resultsmentioning

confidence: 96%

Structural diversity and possible functional roles of free fatty acids of the novel soil isolate Streptomyces sp. NP10

Ilić-Tomič

Genčić

Živković

et al. 2015

Appl Microbiol Biotechnol

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Herein, a novel soil bacterium Streptomyces sp. NP10 able to grow outside usual streptomycetes optimum conditions (e.g., at 4 °C, pH 9 and high NaCl concentration), exhibiting atypical hemolytic, DNAse, and cellulolytic activities, is described. This strain produces and excretes into the growth medium large amounts of free long-chain fatty acids (FAs). A concurrent lipidomics study revealed a large structural diversity of FAs with over 50 different n- and branched-chain, (un)saturated, and cyclopropane FAs (C7-C30) produced by this strain. Two of these, i-17:0cy9-10 and a-18:0cy9-10, represent new natural products and the first ever identified branched cyclopropane FAs. Both free and bound lipid profiles of Streptomyces sp. NP10 were dominated by saturated branched chain FAs (i-14:0, a-15:0, and i-16:0). Although these free FAs showed only a moderate antimicrobial activity, our results suggest that they could have an ecophysiological role in interspecies signaling with another soil microorganism Pseudomonas aeruginosa. This work represents the first comprehensive report on the structural diversity and complexity of the free FA pool in Streptomyces. A naturally occurring streptomycete, such as Streptomyces sp. NP10, which secretes significant amounts of free long-chain FAs (non-cytotoxic) into the medium, could be useful in microbial biodiesel production.

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“…4a-4d, respectively). The chemical shifts for each carbon of the DDA alkyl chain are determined with chemical-shift order of the 13 C pyramid proposed by Bengsch et al (24) and reported in Table 1. For all partial pressures, the resolution is low and a 2.3 ppm signal shift is observed.…”

Section: Resultsmentioning

confidence: 99%

Immersion Microcalorimetry and13C CP/MAS NMR Study of the Structure of Organoclays

Khatib¹,

François²,

Tékély³

et al. 1996

Journal of Colloid and Interface Science

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A general rule for the assignment of the carbon-13 NMR peaks in fatty acid chains

Cited by 27 publications

References 23 publications

High resolution ¹³C NMR spectroscopy of rendered animal fats: degree of saturation of fatty acid chains and position on glycerol

High resolution ¹³C NMR spectroscopy of rendered animal fats: degree of saturation of fatty acid chains and position on glycerol

Structural diversity and possible functional roles of free fatty acids of the novel soil isolate Streptomyces sp. NP10

Immersion Microcalorimetry and13C CP/MAS NMR Study of the Structure of Organoclays

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A general rule for the assignment of the carbon-13 NMR peaks in fatty acid chains

Cited by 27 publications

References 23 publications

High resolution 13C NMR spectroscopy of rendered animal fats: degree of saturation of fatty acid chains and position on glycerol

High resolution 13C NMR spectroscopy of rendered animal fats: degree of saturation of fatty acid chains and position on glycerol

Structural diversity and possible functional roles of free fatty acids of the novel soil isolate Streptomyces sp. NP10

Immersion Microcalorimetry and13C CP/MAS NMR Study of the Structure of Organoclays

Contact Info

Product

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High resolution ¹³C NMR spectroscopy of rendered animal fats: degree of saturation of fatty acid chains and position on glycerol

High resolution ¹³C NMR spectroscopy of rendered animal fats: degree of saturation of fatty acid chains and position on glycerol