Microwave-assisted extractions of active ingredients from plants

Chan, Candy King-Chi; Yusoff, Rozita; Ngoh, Gek Cheng; Kung, Fabian Wai-Lee

doi:10.1016/j.chroma.2011.07.040

Cited by 522 publications

(294 citation statements)

References 93 publications

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“…Over of solvents caused microwave warming became worse so that microwave radiation was absorbed by solvent and energy required when warming became too much (Chan et al, 2011). On the research of conventional solvent was used in the method of MAE is isopropanol caused gamma oryzanol was due to a combination of alcohol triterpene and ferulate acid slightly polar, thus easy to dissolve in the polar solvent like isopropanol (Xu and Godber, 1999).…”

Section: Optimum Conditions Of Conventional Solvent-maementioning

confidence: 99%

Optimization of Ionic Liquid 1-Butyl-3-Methylimidazolium Hexafluorophosphate ([Bmim] PF6 )-Based Microwave Assisted Extraction Method for Gamma Oryzanol from Rice Bran (Oryza Sativa L.)

Trinovita

Sigalingging

Saputri³

et al. 2017

J App Pharm Sci

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The effect of IL solvent and the microwave-assisted extraction (MAE) including concentration IL, the ratio of liquid/solid, time extraction and microwave power in the result of gamma oryzanol extract in rice bran (Oryza Sativa L.) were investigated. The application of IL [Bmim] PF6 as a selected solvent in the MAE method was developed for the extraction of gamma oryzanol from rice bran. The Box-Behnken design on four factors with response surface methodology version 10 was used to optimize experimental conditions. The optimum process for the MAE using ionic liquids ([Bmim]PF6) concentration 0.7 M [Bmim]PF6 solution, the ratio of liquid/solid 15mL/g, extraction time 10 min, and 30% microwave power with the gamma oryzanol value of 0.27 mg/g.The IL-MAE method is more efficient for the extraction of gamma oryzanol compounds from rice bran. Abbreviation:[Bmim] PF6 : 1-butyl-3-methylimidazolium hexafluorophosphate; IL : ionic liquid; MAE : microwave-assisted extraction; RSM : Response Surface Methodology; HPLC : High-performance liquid chromatography

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Section: Optimum Conditions Of Conventional Solvent-maementioning

confidence: 99%

Optimization of Ionic Liquid 1-Butyl-3-Methylimidazolium Hexafluorophosphate ([Bmim] PF6 )-Based Microwave Assisted Extraction Method for Gamma Oryzanol from Rice Bran (Oryza Sativa L.)

Trinovita

Sigalingging

Saputri³

et al. 2017

J App Pharm Sci

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show abstract

“…Extraction in a sealed system at high temperature is both faster, uses a much smaller volume of solvent than traditional methods such as soxhlet extraction and is often used in the extraction of organic molecules from environmental 25 or cellular matrices. 26 As, in this case, the products are sparingly soluble in methanol the use of lower volumes of solvent results in less product being lost. With the 1,4-dimethoxy substituted intermediate 6d'' 1H NMR of the product 7d'' after precipitation contained residual starting material, which was also successfully removed by the microwave extraction.…”

Section: <>mentioning

confidence: 99%

A rapid, chromatography-free route to substituted acridine–isoalloxazine conjugates under microwave irradiation

Johns

Crouch

Grieve

et al. 2014

Tetrahedron Letters

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“…The efficiency of MAE strongly relies on the selection of the operating conditions and the parameters affecting the extraction mechanisms and yield. The factors that may influence the performance of MAE are solvent nature, solvent to feed ratio, extraction time, microwave power, temperature, sample characteristic and effect of stirring [24]. …”

Section: Microwave-assisted Extractionmentioning

confidence: 99%

Introducing Organic Chemistry Students to the Extraction of Natural Products Found in Vegetal Species

Guntero¹,

Mancini²,

Kneeteman³

2017

WJCE

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This work constitutes a new strategy for teaching-learning the chemistry of natural products, being the students active participants in the process. Results showed in this activity contributed not only to the understanding of the subject but also turned out to be an important pillar of motivation. An essential oil is any of a class of volatile oils that give plants their characteristic odor. Essential oils are also known as ethereal oil, volatile oil, aetherolea, or simply as the oil of the plant from which they are extracted, such as oil of clove. The oil is "essential" in the sense that it contains the "essence of" vegetal specie fragrance, the characteristic fragrance of the plant from which it is derived. These can be extracted from different parts of plants such as stems, leaves and flowers. In this work, two conventional methods (steam distillation and Soxhlet extraction) and one non-conventional method (microwave-assisted extraction), was developed under different conditions from clove. The yield of clove oil and yield of eugenol were obtained; and the concentration of eugenol present was assessed by gas chromatography. The main objective was that the experimental activity with the theoretical foundation will provide to the students of organic chemistry the ability to link concepts and develop skills in the laboratory.

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Microwave-assisted extractions of active ingredients from plants

Cited by 522 publications

References 93 publications

Optimization of Ionic Liquid 1-Butyl-3-Methylimidazolium Hexafluorophosphate ([Bmim] PF6 )-Based Microwave Assisted Extraction Method for Gamma Oryzanol from Rice Bran (Oryza Sativa L.)

Optimization of Ionic Liquid 1-Butyl-3-Methylimidazolium Hexafluorophosphate ([Bmim] PF6 )-Based Microwave Assisted Extraction Method for Gamma Oryzanol from Rice Bran (Oryza Sativa L.)

A rapid, chromatography-free route to substituted acridine–isoalloxazine conjugates under microwave irradiation

Introducing Organic Chemistry Students to the Extraction of Natural Products Found in Vegetal Species

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