Métodos de extração e qualidade da fração lipídica de matérias-primas de origem vegetal e animal

Brum, Aelson Aloir Santana; Arruda, Lia Ferraz de; ́Arce, Marisa Aparecida Bismara Regitano-d

doi:10.1590/s0100-40422009000400005

Cited by 89 publications

(84 citation statements)

References 16 publications

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“…Encapsulation efficiency was determined by extracting the encapsulated oil using the modified Bligh and Dyer method (Brum, Arruda, Reginato-d'Arce, 2009). Dried microparticles were placed in 80 mL sodium phosphate buffer solution pH 7.4 for 12 hours.…”

Section: Encapsulation Efficiencymentioning

confidence: 99%

Production and characterization of alginate-starch-chitosan microparticles containing stigmasterol through the external ionic gelation technique

Fujiwara

Campos

Costa

et al. 2013

Braz. J. Pharm. Sci.

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Stigmasterol -a plant sterol with several pharmacological activities -is susceptible to oxidation when exposed to air, a process enhanced by heat and humidity. In this context, microencapsulation is a way of preventing oxidation, allowing stigmasterol to be incorporated into various pharmaceutical forms while increasing its absorption. Microparticles were obtained using a blend of polymers of sodium alginate, starch and chitosan as the coating material through a one-stage process using the external gelation technique. Resultant microparticles were spherical, averaging 1.4 mm in size. Encapsulation efficiency was 90.42% and method yield 94.87%. The amount of stigmasterol in the oil recovered from microparticles was 9.97 mg/g. This technique proved feasible for the microencapsulation of stigmasterol.Uniterms: Stigmasterol/ microencapsulation. Microencapsulation. Sodium alginate/drugs coating. Chitosan/drugs coating. Starch/drugs coating. Natural polymers/drugs coating.O estigmasterol, um fitoesterol com diversas atividades farmacológicas, é suscetível à oxidação quando exposto ao ar, calor e umidade. Neste contexto, a microencapsulação é uma forma de proteção contra oxidação, permitindo a incorporação do estigmasterol em diversas formas farmacêuticas e aumentar sua absorção. As micropartículas foram obtidas por gelificação iônica externa, em uma etapa, utilizando como revestimento polímeros naturais de alginato de sódio, amido de milho e quitosana. As micropartículas apresentaram formato esférico com tamanho aproximado de 1,4 mm. O rendimento foi de 94,87% e a eficiência média de encapsulação de 90,42%. A quantidade de estigmasterol no óleo recuperado das micropartículas foi de 9,97 mg/g. O método mostrou-se viável para a microencapsulação do estigmasterol.Unitermos: Estigmasterol/microencapsulação. Microencapsulamento. Alginato de sódio/revestimento de fámacos. Quitosana/revestimento de fámacos. Amido/revestimento de fámacos. Polímeros naturais/ revestimento de fámacos.

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Section: Encapsulation Efficiencymentioning

confidence: 99%

Production and characterization of alginate-starch-chitosan microparticles containing stigmasterol through the external ionic gelation technique

Fujiwara

Campos

Costa

et al. 2013

Braz. J. Pharm. Sci.

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“…The oil extraction must be performed by methods that present less impairment of quality of the oil. Study by Brum et al (2009) (19.9% and 19% by dry weight, respectively). In our work, extraction method using three solvents showed no statistical differences compared to the extraction system with two solvents, however had larger mean of total lipids, which was took into account in chosen the method.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the study by Brum et al (2009), which had demonstrated the method of Bligh and Dyer giving higher yield for oat flaks and chicken breast than Folch et al method. .…”

Section: Selection Of Strain With Improved Efficiency For the Productmentioning

confidence: 99%

Comparison of two lipid extraction methods produced by yeast in cheese whey

Castanha

Morais²,

Mariano

et al. 2013

Braz. arch. biol. technol.

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“…45,46 The hexane extract belongs to Group II and this solvent is frequently used in the lipid extraction. 47 The bands at 2918 and 2861 cm -1 are attributed respectively to the asymmetric and symmetric stretching vibrations of sp 3 hybridized C−H bonds. The band at 1464 cm -1 corresponds to the symmetrical angular deformation of methylene groups.…”

Section: Ftir Fingerprint Analysismentioning

confidence: 99%

Chemometric Analysis of UV Characteristic Profile and Infrared Fingerprint Variations ofCoffea arabicaGreen Beans under Different Space Management Treatments

Terrile¹,

Marcheafave²,

Oliveira³

et al. 2016

Journal of the Brazilian Chemical Society

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Ultraviolet characteristic profiles and infrared spectroscopic (FTIR) fingerprints of green bean extracts of Coffea arabica L., cv. IAPAR 59, cultivated in two planting patterns, rectangular and square, and at two different densities, 10,000 and 6,000 plants ha -1 , identified as R 10 , R 6 , S 10 , and S 6 were analyzed with principal component and hierarchical cluster analyses. A simplex centroid design for four solvents (ethanol, acetone, dichloromethane, hexane) was used for sample extraction. The largest chlorogenic acid (CGA) contents were found at the lower planting density. The dichloromethane extracts of the S 10 treatment showed the highest levels of unsaponifiable lipids (cafestol and kahweol). The R 6 treatment showed a slightly higher content of cafestol and kahweol. Cluster analysis of FTIR fingerprints confirmed that the CGA and caffeine levels differentiate the spatial arrangements. The FTIR fingerprints suggest that green beans from S 6 and R 10 were richer in lipids and the other two treatments had more sugars and proteins.

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Métodos de extração e qualidade da fração lipídica de matérias-primas de origem vegetal e animal

Cited by 89 publications

References 16 publications

Production and characterization of alginate-starch-chitosan microparticles containing stigmasterol through the external ionic gelation technique

Production and characterization of alginate-starch-chitosan microparticles containing stigmasterol through the external ionic gelation technique

Comparison of two lipid extraction methods produced by yeast in cheese whey

Chemometric Analysis of UV Characteristic Profile and Infrared Fingerprint Variations ofCoffea arabicaGreen Beans under Different Space Management Treatments

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