Physical Properties of Triglycerides. I. Density and Refractive Index

Gouw, T. H.; Vlugter, J. C.

doi:10.1002/lipi.19660680705

Cited by 36 publications

(24 citation statements)

References 22 publications

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“…The slight difference between the specific gravity of Tower oil and soybean oil can tea-sonably be ascribed to the basic variations in composition such as the difference between a high oleic oil and a high linoleic oil. For example, d~ 0 is 0.9125 for triolein, 0.9265 for trilinolein (5), although the arrangement of fatty acids on the triglycerol moiety is also a factor (6,7). Similarly the differences in specific gravity in Table I for the three Brassica oils, progressing from Canadian high erucic acid rapeseed oil through the variety Span to the variety Tower, allowing for other modifications such as in the proportions of eicosenoic and the C18 polyunsaturated acids, is in accord with the fatty acid densities demonstrated by the densities (d~ 0) of methyl erucate, 0.8706, and methyl oleate, 0.8740.…”

mentioning

confidence: 99%

Specific gravities of rapeseed and canbra oils

Ackman

Eaton

1977

J Americ Oil Chem Soc

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confidence: 99%

Specific gravities of rapeseed and canbra oils

Ackman

Eaton

1977

J Americ Oil Chem Soc

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“…4.6 x 10-4 for each increment in temperature of 1 C. At a given temperature, the difference between maximum and minimum density for the triglyceride marine oils studied in this report is less than 1.5%. The temperature coefficients of density (Table IV) reports (24,29). For harp seal oil our finding of (6 = 4.70 x 10-4 g/cc ~ is much lower than the result of 6.77 x 10 -4, which has been published recently for Caspian seal oil, although the iodine value of 187 for the latter is higher (30).…”

Section: Resultsmentioning

confidence: 53%

Bunsen coefficient for oxygen in marine oils at various temperatures determined by an exponential dilution method with a polarographic oxygen electrode

Ke¹,

Ackman²

1973

J Americ Oil Chem Soc

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A polarographic oxygen electrode has been applied to an exponential dilution method for the determination of the solubility of oxygen in oils. Results are compared with other chemical and physical methods for herring and olive oils and the same oils subjected to partial oxidation. The Bunsen coefficients for oxygen in nine marine oils have been determined by this procedure between 20 and 80 C, with a relative standard deviation of +-7% or less. The densities and viscosities of these oils have been measured for the same temperature range. In general, the Bunsen coefficient for oxygen in marine oils increases with an increase in temperature between 20 and 60 C, but then rapidly decreases between 60 and 80C to a value lower than that for room temperature. It appears that autoxidation should not be the major cause of this effect, as the measurement rate was relatively rapid. Some tentative correlations between the solubility of oxygen in marine oils and the fatty acid composition, iodine value, density and viscosity are discussed briefly.

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“…These values are dependent on the nature of the particles being measured. We selected polystyrene latex nanospheres (refractive index (1.615) [36]) over metallic nanoparticles (refractive index > 2.0) because the former’s refractive index is similar to that of individual organelles, such as mitochondria (1.41) [37], and triglycerides (1.43-1.48) [38], the main component of lipid droplets.…”

Section: Resultsmentioning

confidence: 99%

Sizing lipid droplets from adult and geriatric mouse liver tissue via nanoparticle tracking analysis

et al. 2018

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The significance of lipid droplets in lipid metabolism, cell signaling, and regulating longevity is increasingly recognized, yet the lipid droplet's unique properties and architecture make it difficult to size and study using conventional methods. To begin to address this issue, we demonstrate the capabilities of nanoparticle tracking analysis (NTA) for sizing of lipid droplets. NTA was found to be adequate to assess lipid droplet stability over time, indicating that lipid droplet preparations are stable for up to 24 h. NTA had the ability to compare the size distributions of lipid droplets from adult and geriatric mouse liver tissue, suggesting an age-related decrease in lipid droplet size. This is the first report on the use of NTA to size intracellular organelles. Graphical Abstract Light scattering reveals the temporal positions of individual lipid droplets, which are recorded with a camera. The two-dimensional diffusion constant of each lipid droplet is extracted from the data set, which is then used to calculate a hydrodynamic radius using the Stokes-Einstein equation.

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Physical Properties of Triglycerides. I. Density and Refractive Index

Abstract: Densities and refractive indices of the nil^, Ha, Hfi and the

Cited by 36 publications

References 22 publications

Specific gravities of rapeseed and canbra oils

Specific gravities of rapeseed and canbra oils

Bunsen coefficient for oxygen in marine oils at various temperatures determined by an exponential dilution method with a polarographic oxygen electrode

Sizing lipid droplets from adult and geriatric mouse liver tissue via nanoparticle tracking analysis

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