Application of molecular sieves in the fractionation of lemongrass oil from high-pressure carbon dioxide extraction

Paviani, Losiane C.; Pergher, Sibele B. C.; Dariva, Cláudio

doi:10.1590/s0104-66322006000200009

Cited by 36 publications

(19 citation statements)

References 10 publications

(10 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The differential response of EOs for decay area caused by P. italicum or P. digitatum could be attributed to the components and biological activity of respective oil. Thus, better inhibition of P. digitatum and P. italicum by lemon grass oil may be due to high content of citral (Paviani et al 2006). Irrespective of essential oil treatment and storage, P. italicum caused higher decay area than P. digitaum.…”

Section: In Vivo Studiesmentioning

confidence: 99%

“…Differential inhibition of pathogens by EOs may be due to their composition, which contribute to their biological activity. For example, high content of citral (Paviani et al 2006) was found as the main compound in lemon grass oil, while clove oil contains eugenol, caryophyllene, furfurol, α-pinene and eugenyl acetate and eugenol a phenolic compound (70-90 %) was the main contributor (Matan et al 2006), and the antimicrobial activity of eucalyptus essential oil is due to the presence of a mixture of monoterpenes and oxygenated monoterpenes. (Aggarwal et al 2002).…”

Section: Effects Of Eos On Colony Diameter Of Test Pathogensmentioning

confidence: 99%

See 1 more Smart Citation

In vitro and in vivo activity of essential oils against major postharvest pathogens of Kinnow (Citrus nobilis × C. deliciosa) mandarin

2014

View full text Add to dashboard Cite

Section: In Vivo Studiesmentioning

confidence: 99%

Section: Effects Of Eos On Colony Diameter Of Test Pathogensmentioning

confidence: 99%

In vitro and in vivo activity of essential oils against major postharvest pathogens of Kinnow (Citrus nobilis × C. deliciosa) mandarin

2014

View full text Add to dashboard Cite

“…The major component of the essential oil of lemon grass, extracted from the plant grown in Southern Brazil was found to be citral (80-85%). 29 Thus, when a mixture of thiophenol (2a) and the essential oil of lemon grass was submitted to MW irradiation (548W) for 0.5 min in the presence of KF/Al 2 O 3 (50%, 0.07 g), 3,7-dimethyl-3-(phenylthio)oct-6-enal (3a) was obtained in 52% yield, together with unreacted mircene, linalool, geraniol and others minor constituents of the starting oil, that were recovered.…”

Section: Resultsmentioning

confidence: 99%

Green Michael addition of thiols to electron deficient alkenes using KF/alumina and recyclable solvent or solvent-free conditions

Lenardão¹,

Trecha²,

Ferreira³

et al. 2009

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Um método simples e eficiente foi desenvolvido para a adição conjugada de tióis ao citral na presença de KF/Al 2 O 3 em meio livre de solvente ou usando glicerina como solvente reciclável a temperatura ambiente. O método em meio livre de solvente foi aplicado com sucesso na reação direta do tiofenol com o óleo essencial de capim limão (Cymbopogon citratus), para fornecer diretamente 3,7-dimetil-3-(feniltio)oct-6-enal, um potencial agente bactericida. O método foi estendido a outros alcenos deficientes de elétrons com excelentes resultados. Para o método em meio livre de solvente, o uso de irradiação com microondas facilitou o procedimento e acelerou a reação. O sistema catalítico e a glicerina podem ser reutilizados até três vezes sem tratamento prévio, com atividade comparável.A general, clean and easy method for the conjugated addition of thiols to citral promoted by KF/ Al 2 O 3 under solvent-free or using glycerin as recyclable solvent at room temperature is described. It was found that the solvent-free protocol is applicable to the direct reaction of thiophenol with the essential oil of lemon grass (Cymbopogon citratus) to afford directly 3,7-dimethyl-3-(phenylthio) oct-6-enal, a potential bactericide agent. The method was extended to other electron-poor alkenes with excellent results. For the solvent-free protocol, the use of microwave irradiation facilitated the procedure and accelerates the reaction. The catalytic system and glycerin can be reused up to three times without previous treatment with comparable activity.

show abstract

“…Lemon grass reportedly contains 1% to 2% of essential oil on a dry basis. The oil is usually extracted and used as a raw material in food, cosmetic, and pharmaceutical industries (Paviani et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Active SiO2 from Cymbopogon citratus Ash Calcined at Different Temperature

et al. 2016

View full text Add to dashboard Cite

aCymbopogon citratus or lemon grass, is a potential renewable herbaceous biomass alternative. Lemon grass contains silica, which is available for extraction as a filler for various applications. Lemon grass ash is produced at calcination temperatures of 0, 400, 525, 600, and 700 ˚C. The silica content of the lemon grass ash was characterized by X-ray fluorescence (XRF), X-ray powder diffraction (XRD), scanning electron microcopy (SEM), and Fourier transform infrared (FTIR) analysis. The shape and texture of the lemon grass ash were studied by SEM. The highest silica content recorded was 24.00% for lemon grass calcined at 400 °C. The porosity of the lemon grass ash increased as the calcination temperature increased from 0 °C to 700 °C. XRD analysis showed that the crystallinity of silica in the lemon grass ash increased with increasing calcination temperature. FTIR analysis confirmed the presence of organic structure in lemon grass without calcination and the inorganic structure of siloxane and silanol bonds present in lemon grass calcined at different temperatures.

show abstract

Application of molecular sieves in the fractionation of lemongrass oil from high-pressure carbon dioxide extraction

Cited by 36 publications

References 10 publications

In vitro and in vivo activity of essential oils against major postharvest pathogens of Kinnow (Citrus nobilis × C. deliciosa) mandarin

In vitro and in vivo activity of essential oils against major postharvest pathogens of Kinnow (Citrus nobilis × C. deliciosa) mandarin

Green Michael addition of thiols to electron deficient alkenes using KF/alumina and recyclable solvent or solvent-free conditions

Preparation and Characterization of Active SiO2 from Cymbopogon citratus Ash Calcined at Different Temperature

Contact Info

Product

Resources

About