Development of technology for the substance of poly[3-(3,4-dihydroxyphenyl) glyceric acidfrom Symphytum asperum

Comfrey (Symphytum L.) is used to treat bone fractures, tendon injuries, ulcer lesions of gastrointestinal tract. It promotes wound healing, accelerates exudates resorption in lungs and reduces joints' inflammation. In Georgian folk medicine, herbal remedies from comfrey are used to accelerate...

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Veröffentlicht in:Georgian medical news 2013-05 (218), p.72-77
Hauptverfasser: Gokadze, S I, Barbakadze, V V, Gogilashvili, L M, Amiranashvili, L Sh, Bakuridze, A Dzh
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container_issue 218
container_start_page 72
container_title Georgian medical news
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creator Gokadze, S I
Barbakadze, V V
Gogilashvili, L M
Amiranashvili, L Sh
Bakuridze, A Dzh
description Comfrey (Symphytum L.) is used to treat bone fractures, tendon injuries, ulcer lesions of gastrointestinal tract. It promotes wound healing, accelerates exudates resorption in lungs and reduces joints' inflammation. In Georgian folk medicine, herbal remedies from comfrey are used to accelerate regeneration processes. Comfrey contains hepatotoxic and carcinogenic pyrrolizidine alkaloids, besides the main active ingredient is poly [3 - (3,4-dihydroxyphenyl) glyceric acid] (PDPGA). The aim of present work was to develop a technology for the substance - poly [3-(3,4dihydroxyphenyl) glyceric acid] (PDPGA) from comfrey stems, free of toxic pyrrolizidine alkaloids. During the investigation the optimal conditions for extraction and purification have been established: on the first stage pyrrolizidine alkaloids were removed from plant material by supercritical extraction; then the crude polysaccharides' fraction was obtained by water extraction (raw materials/extragent ratio was 1:15 at 90oC, the procedure was carried twice for 60 and 90 minutes). The isolation of the final product - PDPGA from crude polysaccharides' fraction was carried out by ultrafiltration on membrane filters. Based on the results of the investigation the technological scheme for the substance has been developed.
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It promotes wound healing, accelerates exudates resorption in lungs and reduces joints' inflammation. In Georgian folk medicine, herbal remedies from comfrey are used to accelerate regeneration processes. Comfrey contains hepatotoxic and carcinogenic pyrrolizidine alkaloids, besides the main active ingredient is poly [3 - (3,4-dihydroxyphenyl) glyceric acid] (PDPGA). The aim of present work was to develop a technology for the substance - poly [3-(3,4dihydroxyphenyl) glyceric acid] (PDPGA) from comfrey stems, free of toxic pyrrolizidine alkaloids. During the investigation the optimal conditions for extraction and purification have been established: on the first stage pyrrolizidine alkaloids were removed from plant material by supercritical extraction; then the crude polysaccharides' fraction was obtained by water extraction (raw materials/extragent ratio was 1:15 at 90oC, the procedure was carried twice for 60 and 90 minutes). The isolation of the final product - PDPGA from crude polysaccharides' fraction was carried out by ultrafiltration on membrane filters. 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subjects Comfrey - chemistry
Glyceric Acids - administration & dosage
Glyceric Acids - chemistry
Glyceric Acids - isolation & purification
Humans
Neutrophils - drug effects
Plant Extracts - administration & dosage
Plant Extracts - chemistry
Plant Roots - chemistry
Pyrrolizidine Alkaloids - chemistry
Pyrrolizidine Alkaloids - isolation & purification
Regeneration - drug effects
title Development of technology for the substance of poly[3-(3,4-dihydroxyphenyl) glyceric acidfrom Symphytum asperum
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