Effective sample preparation method for extracting biologically active compounds from different matrices by a microwave technique

Ganzler, Katalin; Szinai, I.; Salgó, András

doi:10.1016/0021-9673(90)85109-9

Cited by 107 publications

(38 citation statements)

References 4 publications

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“…The use of microwave for extracting biologically compounds is recent. Some reports have shown its positive results for extracting phenolic compounds, essential oil, flavonoids and alkaloids, more effective than conventional extraction methods [9,[15][16].…”

Section: Resultsmentioning

confidence: 99%

Flavonoids extraction from Alpinia zerumbet (Pers.) Burtt et Smith leaves using different procedures

2010

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The current study aims to verify the best method for a rapid and efficient extraction of flavonoids from Alpinia zerumbet. Dried leaves were extracted using distillated water and ethanol 70% by extraction methods of shaking maceration, ultrasonic, microwave and stirring. By the application of TLC and reversed-phase HPLC techniques the rutin and kaempferol-3-O-glucuronide were detected. Ethanol 70% was more efficient for flavonoids extraction than water. No significant yielding variation was verified for ultrasonic, microwave and stirring methods using ethanol 70% (11 to 14%). Relative concentration of rutin and kaempferol-3-Oglucuronide, respectively, was higher by ultrasonic (1.5 and 5.62 mg g-1 dried leaves) and by microwave (1.0 and 6.64 mg g-1 dried leaves) methods using 70% ethanol. Rapid and simplified extraction proceeding optimize phytochemical work and acquisition of secondary metabolites.

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Section: Resultsmentioning

confidence: 99%

Flavonoids extraction from Alpinia zerumbet (Pers.) Burtt et Smith leaves using different procedures

2010

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“…In the microwave process, the oscillation of polar species and ionic conduction causes the temperature to rapidly increase, thereby improving the extraction efficiency (Ganzler et al, 1990). When microwaves irradiate the interior of a cell, the oscillation of polar substances causes rapid heating, moisture evaporation and increasing pressure, which lead to cell rupture followed by the release of the cell contents.…”

Section: Microwavementioning

confidence: 99%

A Review: Microalgae and Their Applications in CO2 Capture and Renewable Energy

Klinthong

Yang

Huang

et al. 2015

Aerosol Air Qual. Res.

215

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Fossil fuels, which are recognized as unsustainable sources of energy, are continuously consumed and decreased with increasing fuel demands. Microalgae have great potential as renewable fuel sources because they possess rapid growth rate and the ability to store high-quality lipids and carbohydrates inside their cells for biofuel production. Microalgae can be cultivated on opened or closed systems and require nutrients and CO 2 that may be supplied from wastewater and fossil fuel combustion. In addition, CO 2 capture via photosynthesis to directly fix carbon into microalgae has also attracted the attention of researchers. The conversion of CO 2 into chemical and fuel (energy) products without pollution via this approach is a promising way to not only reduce CO 2 emissions but also generate more economic value. The harvested microalgal biomass can be converted into biofuel products, such as biohydrogen, biodiesel, biomethanol, bioethanol, biobutanol and biohydrocarbons. Thus, microalgal cultivation can contribute to CO 2 fixation and can be a source of biofuels. This article reviews the literature on microalgae that were cultivated using captured CO 2 , technologies related to the production of biofuels from microalgae and the possible commercialization of microalgae-based biofuels to demonstrate the potential of microalgae. In this respect, a number of relevant topics are addressed: the nature of microalgae (e.g., species and composition); CO 2 capture via microalgae; the techniques for microalgal cultivation, harvesting and pretreatment; and the techniques for lipid extraction and biofuel production. The strategies for biofuel commercialization are proposed as well.

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“…The use of microwave for extracting biologically compounds is recent. Some reports have shown its positives results for extracting phenolic compounds, essential oil, flavonoids and alkaloids, more effective than conventional extraction methods [6,12,13]. Extraction methods, involving heating, raised the efficiency of solvents.…”

Section: Hplc Analysismentioning

confidence: 99%

Flavonoid extraction from Alpinia zerumbet (Pers.) Burtt et Smith leaves using different techniques and solvents

2009

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The current study aims to verify the best method for a rapid and efficient extraction of flavonoids from Alpinia zerumbet. Dried leaves were extracted using distillated water and ethanol 70% by extraction methods of shaking maceration, ultrasonic, microwave and stirring. By the application of TLC and reversedphase HPLC techniques the rutin and kaempferol-3-O-glucuronide were detected. Ethanol 70% was more efficient for flavonoids extraction than water. No significant yielding variation was verified for ultrasonic, microwave and stirring methods using ethanol 70% (11 to 14%). The relative concentration of rutin and kaempferol-3-O-glucuronide, respectively, was higher by ultrasonic (1.5 and 5.62 mg g-1 dried leaves, respectively) and by microwave (1.0 and 6.64 mg g-1 dried leaves) methods using ethanol. Rapid and simplified extraction proceeding optimize phytochemical work and acquisition of secondary metabolites.

show abstract

Effective sample preparation method for extracting biologically active compounds from different matrices by a microwave technique

Cited by 107 publications

References 4 publications

Flavonoids extraction from Alpinia zerumbet (Pers.) Burtt et Smith leaves using different procedures

Flavonoids extraction from Alpinia zerumbet (Pers.) Burtt et Smith leaves using different procedures

A Review: Microalgae and Their Applications in CO2 Capture and Renewable Energy

Flavonoid extraction from Alpinia zerumbet (Pers.) Burtt et Smith leaves using different techniques and solvents

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