Evaluation of a methylation procedure to determine cyclopropenoids fatty acids from Sterculia striata St. Hil. Et Nauds seed oil

Aued-Pimentel, Sabria; Lago, João Henrique G.; Chaves, Mariana Helena; Kumagai, Edna Emy

doi:10.1016/j.chroma.2004.07.090

Cited by 110 publications

(85 citation statements)

References 19 publications

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“…Spectra can be provided upon request. Degree of saturation of the corresponding fatty acids (FA) was confi rmed by gas chromatography with fl ame ionization detector (GC-FID) in a Clarus 400 (Perkin Elmer) ( 34 ). Analysis was carried out in triplicate in at least three samples from each group.…”

Section: Animals and Experimental Designmentioning

confidence: 99%

LXR activation by GW3965 alters fat tissue distribution and adipose tissue inflammation in ob/ob female mice

Archer¹,

Stolarczyk

Dória

et al. 2013

Journal of Lipid Research

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Section: Animals and Experimental Designmentioning

confidence: 99%

LXR activation by GW3965 alters fat tissue distribution and adipose tissue inflammation in ob/ob female mice

Archer¹,

Stolarczyk

Dória

et al. 2013

Journal of Lipid Research

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“…There are reports in the literature that compounds containing a cyclopropene ring are associated with multiple biological effects on animals including carcinogenic activities and co-carcinogenic [11][12][13]. Although B. glabra seeds are consumed by humans, their ingestion is not recommended due to the presence of CPFA.…”

Section: Introductionmentioning

confidence: 99%

“…The divergence in the results of the analyses is because the CPFA are unstable and easily decompose under heating in acidic medium, depending, therefore, on the form of extraction, the conditions of derivatization and chromatographic analysis [12,13].…”

Section: Introductionmentioning

confidence: 99%

Biodiesel Production from Bombacopsis glabra Oil by Methyl Transesterification Method

et al. 2017

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Abstract:The objective of this work was to produce methyl biodiesel from Bombacopis glabra (B. glabra) oil degummed with H 3 PO 4 . The methyl biodiesel was prepared in an alkaline medium, and characterized by physico-chemical parameters, thin-layer chrmatograghy (TLC), gas chromatograph (GC), (Nuclear magnetic resonance of hydrogen (H-NMR), thermogravimetry and infrared analysis. The physico-chemical parameters of biodiesel were in accordance with the limits established by National Agency of Petroleum, Natural Gas and Biofuels (ANP) Resolution 45/2014, except oxidation stability, where it was corrected with the addition of antioxidants such as TBHQ and BHT.

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“…Traditionally, fatty acids can be prepared from natural oils and fats using chemical catalysts (acid or base) (Murty et al, 2002;Satyarthi et al, 2011). However, according to the previous report (Aued-Pimentel et al, 2004), the structure of cyclopropene in sterculic acid can be destroyed by acid. When a base is used as catalyst, acidification is necessary to prepare fatty acids.…”

Section: Introductionmentioning

confidence: 99%

Enzymatic production of sterculic acid from the novel Phoenix tree seed oil: Optimization and kinetic study

Hou

Sun

2017

Grasas y Aceites

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SUMMARY:Phoenix tree (Firmiana simplex) seed oil is a novel oil which is rich in sterculic acid. Sterculic acid, a cyclopropene fatty acid, can be used as the inhibitor of the stearoyl-CoA desaturase system and mammary carcinomas growth. In this work, Lipozyme TLIM-catalyzed hydrolysis of the novel Phoenix tree seed oil was used to prepare sterculic acid. High temperature GC-FID and the degree of hydrolysis (DH) were used to monitor the reaction progress. Effects of reaction variables on the hydrolysis were evaluated and optimized using response surface methodology. Results showed that sterculic acid can be successfully prepared from the novel seed oil, and the effect of reaction variables on the hydrolysis decreased in the order of reaction time > enzyme load > temperature. RESUMEN: Producción enzimática de ácido estercúlico a partir del nuevo aceite de semillas del árbol fenix: optimización y estudio cinético. El aceite de semilla del árbol fenix (Firmiana simplex) es un nuevo tipo de aceite rico en ácido estercúlico. Este es un ácido graso ciclopropeno, que se puede utilizar como inhibidor del sistema de estearoyl-CoA desaturasa y del crecimiento de los carcinomas mamarios. En este trabajo, se utilizó la hidrólisis catalizada por Lipozyme TLIM del nuevo aceite de semilla de árbol fenix para preparar ácido estercúlico. Se utilizaron GC-FID a alta temperatura y el grado de hidrólisis (DH) para monitorizar el progreso de la reacción. Los efectos de las variables de reacción de hidrólisis se evaluaron y optimizaron utilizando la metodología de superficie de respuesta. Los resultados mostraron que el ácido estercúlico puede prepararse con éxito a partir del nuevo aceite de semilla, y el efecto de las variables de reacción en la hidrólisis disminuyó en el orden de tiempo de reacción> carga enzimática> temperatura. Se pueden obtener altos rendimientos de ácidos grasos (DH, 98,2 ± 0,8%) en condiciones optimizadas (45 ºC, relación masa de agua a aceite 10: 1, carga enzimática 10% y 18 h). La ecuación de Arrhenius para la hidrólisis fue LnV 0 = 9,12 − 4721/T. La energía de activación fue 39,25KJ/mol. Los valores cinéticos de Vmax, K/m fueron 0,232 mol/(L • min) y 0,084 mol/L, respectivamente. Citation/Cómo citar este artículo: Hou X, Sun S. 2017. Enzymatic production of sterculic acid from the novel Phoenix tree seed oil: Optimization and kinetic study. Grasas Aceites 68 (2), e197. http://dx

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Evaluation of a methylation procedure to determine cyclopropenoids fatty acids from Sterculia striata St. Hil. Et Nauds seed oil

Cited by 110 publications

References 19 publications

LXR activation by GW3965 alters fat tissue distribution and adipose tissue inflammation in ob/ob female mice

LXR activation by GW3965 alters fat tissue distribution and adipose tissue inflammation in ob/ob female mice

Biodiesel Production from Bombacopsis glabra Oil by Methyl Transesterification Method

Enzymatic production of sterculic acid from the novel Phoenix tree seed oil: Optimization and kinetic study

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