The Balaton Symposium—'99 and in the future

Nyiredy, Szabolcs

doi:10.1007/bf02492790

Cited by 1 publication

(4 citation statements)

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“…The extraction solvents on the basis of the extraction yields , the amounts of lead compounds measured separately and conjointly, as well as the ratios 2 furocoumarins/extract and 2 flavonoid glycosides/extract were selected, according to our earlier results [8]. The furocoumarin containing raw extract of Heracleum sphondylium was obtained using ethyl acetate as extraction solvent.…”

Section: Methodsmentioning

confidence: 99%

“…The furocoumarin containing raw extract of Heracleum sphondylium was obtained using ethyl acetate as extraction solvent. The flavonoid glycoside containing raw extract from Betulae pubescens was extracted with methanol [8].…”

Section: Methodsmentioning

confidence: 99%

“…Of course, the components of each fraction differ also in substance type and hence in their polarity. The principle of the selection of mixture of solvents was published in [8].…”

Section: Description Of the Set-upmentioning

confidence: 99%

“…For the successful solid-liquid extraction of compounds from biological matrices such as medicinal and aromatic plants, a new strategy was presented [8]. The suggested solvents used for extraction were characterized on the basis of the Snyder theory [9].…”

Section: Introductionmentioning

confidence: 99%

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Medium-pressure solid-liquid extraction: A new preparative method based on the principle of counter-current

Nyiredy¹,

Botz

2003

Chromatographia

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SummaryA novel variant of continuous relative counter-current extraction, called medium-pressure solid-liquid extraction (MPSLE) is introduced as a new preparative separation method for laboratory purposes. This method is a special case of exhaustive extraction.On using MPSLE, the extraction column, i.e. a medium pressure liquid chromatographic (MPLC) column is filled with the fine-powdered solid phase to be extracted, and extraction solvent(s) is/are forced through the stationary bed by means of a pump. This method constitutes the relative counter-current extraction, and results in exhaustive and rapid extraction. By MPSLE, efficiency is achieved not just because the extraction solvent(s) is/are forced through the staying material to be extracted, but also clue to the overpressure in the extraction column and the suitable changes of the dissolution and diffusion periods of the process.The method can be used for the rapid extraction of various substance classes occurring as complex solid matrices. Experiments carried out with MPLC columns show that the exhaustive extraction of finely powdered plant material of 100-3000g can be extracted and concentrated with an automated equipment within a few hours. Further advantages of the environment-friendly process performed in closed system are full automation and operation with low qua ntil',/of extracta nt.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Of course, the components of each fraction differ also in substance type and hence in their polarity. The principle of the selection of mixture of solvents was published in [8].…”

Section: Description Of the Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations