Comparison of classical and ultrasound-assisted extraction of polysaccharides from Salvia officinalis L

After preparation of medicine tinctures from the herbal plant Salvia officinalis by classical and ultrasound-assisted extraction with aqueous ethanol, the insoluble plant residues were subsequently treated with hot water and dilute alkali to isolate polysaccharide cell wall components. The yields of...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 1999, Vol.5 (4), p.163-168
Main Authors: HROMADKOVA, Z, EBRINGEROVA, A, VALACHOVIC, P
Format: Article
Language:English
Subjects:
Amino Acids - analysis
Biological and medical sciences
Extraction
General pharmacology
Lamiaceae - chemistry
Magnetic Resonance Spectroscopy
Medical sciences
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Plant Extracts - analysis
Plants, Medicinal - chemistry
Polysaccharides
Polysaccharides - analysis
Polysaccharides - isolation & purification
Sage
Salvia officinalis
Spectroscopy, Fourier Transform Infrared
Ultrasonics
Ultrasound
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Summary:After preparation of medicine tinctures from the herbal plant Salvia officinalis by classical and ultrasound-assisted extraction with aqueous ethanol, the insoluble plant residues were subsequently treated with hot water and dilute alkali to isolate polysaccharide cell wall components. The yields of the hot water extract as well as total extracted polysaccharides were higher in the case of the ultrasound-treated plant in both laboratory and pilot plant experiments. The water-extractable polysaccharide fractions, in all cases, contained glucose, galactose and arabinose as main sugar components, whereas the alkali-extractable fractions were rich in xylans. The fractions also contained considerable amounts of proteins. The water-soluble polysaccharides may contribute to the biological activity of the plant decoction. The results indicate that the addition of a subsequent extraction step during the preparation of the herbal tincture might contribute to a better exploitation of the raw material.
ISSN:1350-4177
1873-2828
DOI:10.1016/S1350-4177(98)00046-7