Low-temperature Crystallization of the Fatty Acids and Glycerides.

Brown, J. B.

doi:10.1021/cr60093a009

Cited by 56 publications

(12 citation statements)

References 46 publications

(56 reference statements)

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“…Enrichment of AA by low-temperature solvent crystallization. Low-temperature solvent crystallization was developed decades ago for separating FA or their esters (15,16). In earlier reports from this laboratory, the concentration of PUFA from borage and linseed oils (12) and the enrichment of EPA and DHA from menhaden oil (17) by low-temperature solvent crystallization were described.…”

Section: Resultsmentioning

confidence: 99%

An efficient method for the purification of arachidonic acid from fungal single‐cell oil (ARASCO)

Vali

Sheng

2003

J Americ Oil Chem Soc

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PUFA, such as arachidonic acid (AA), have several pharmaceutical applications. An efficient method was developed to obtain high-purity arachidonic acid (AA) from ARASCO, a single-cell oil from Martek (Columbia, MD). The method comprises three steps. In the first step, AA was enriched from saponified ARASCO oil by low-temperature solvent crystallization using a polar, aprotic solvent, which gave a FA fraction containing 75.7% AA with 97.3% yield. The second step involved enriching AA content via lipase-catalyzed selective esterification of FA with lauryl alcohol. When a mixture of 1 g FA/lauryl alcohol (2:1 mol/mol), 50 mg Candida rugosa lipase, and 0.33 g water was incubated at 50°C for 24 h with stirring at 400 rpm, the AA content in the unesterified FA fraction was as much as 89.3%, with ca. 90% yield. Finally, a solvent extraction procedure, in which acetonitrile was the extracting solvent, was used to enrich AA from FA fraction dissolved in n-hexane. The best results were obtained when 2 g FA was dissolved in 80 mL hexane and extracted twice, each time with 20 mL acetonitrile at -20°C, by allowing 2 h storage. This step gave a FA fraction containing 95.3% AA with 81.2% yield. By using this three-step process the AA content in the saponified single-cell oil (ARASCO) was increased from 38.8 to 95.3% with a total yield of ca. 71%.Paper no. J10517 in JAOCS 80, 725-730 (July 2003).

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Section: Resultsmentioning

confidence: 99%

An efficient method for the purification of arachidonic acid from fungal single‐cell oil (ARASCO)

Vali

Sheng

2003

J Americ Oil Chem Soc

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“…The saturated esters were obtained by fractional distillation of the methyl esters prepared from fatty acids which had been purified by fractional crystallization to essentially theoretical saponification equivalents. Methyloleate was prepared by crystallization, according to the procedure outlined by Brown (5). The more unsaturated methyl esters, linoleate and linolenate, were prepared by debromination of tetra-and hexabromostearic acids in acidified methyl alcohol (6).…”

Section: Methodsmentioning

confidence: 99%

The use of refractive index measurements in fatty acid ester analyses

Mattil

Longenecker

1944

Oil Soap

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“…Preparation of mixed FFAs from triglyceride is straightforward and well-developed. Methods of low temperature crystallization to remove the unsaturated FFAs are also well documented [48]. Most unsaturated FFAs are soluble in most organic solvents at temperature above 0°C while the saturated FFAs, which have higher melting points than unsaturated FFAs, are prone to form crystals/precipitates at low temperature in solvents like acetone or methanol.…”

Section: Physical Propertiesmentioning

confidence: 99%

Vegetable oil-derived epoxy monomers and polymer blends: A comparative study with review

Wang¹,

Schuman²

2013

Express Polym. Lett.

155

118

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Abstract. Glycidyl esters of epoxidized fatty acids derived from soybean oil (EGS) and linseed oil (EGL) have been synthesized to have higher oxirane content, more reactivity and lower viscosity than epoxidized soybean oil (ESO) or epoxidized linseed oil (ELO). The EGS and ESO, for comparison, were used neat and in blends with diglycidyl ether of bisphenol A (DGEBA). Thermosetting resins were fabricated with the epoxy monomers and either BF 3 catalyst or anhydride. The curing behaviors, glass transition temperatures, crosslink densities and mechanical properties were tested. The results indicated that polymer glass transition temperatures were mostly a function of oxirane content with additional influence of glycidyl versus internal oxirane reactivity, pendant chain content, and chemical structure and presence of saturated components. EGS provided better compatibility with DGEBA, improved intermolecular crosslinking and glass transition temperature, and yielded mechanically stronger polymerized materials than materials obtained using ESO. Other benefits of the EGS resin blend systems were significantly reduced viscosities compared to either DGEBA or ESO-blended DGEBA counterparts. Therefore, EGS that is derived from renewable sources has improved potential for fabrication of structural and structurally complex epoxy composites, e.g., by vacuum-assisted resin transfer molding.

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Low-temperature Crystallization of the Fatty Acids and Glycerides.

Cited by 56 publications

References 46 publications

An efficient method for the purification of arachidonic acid from fungal single‐cell oil (ARASCO)

An efficient method for the purification of arachidonic acid from fungal single‐cell oil (ARASCO)

The use of refractive index measurements in fatty acid ester analyses

Vegetable oil-derived epoxy monomers and polymer blends: A comparative study with review

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