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Application filed by Georgi P Ganchev, Vasil I Andreev, Elena G Kovacheva, Pencho V Burov, Veselina G Nalbantjan, Zoja N Demireva, Najden I Stefanov, Anastasija N ShopovafiledCriticalGeorgi P Ganchev
Priority to BG9346990ApriorityCriticalpatent/BG49706A3/en
Publication of BG49706A3publicationCriticalpatent/BG49706A3/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Extraction Or Liquid Replacement
(AREA)
Abstract
The concentrate is used in the manufacture of cosmetics, pharmaceutical preparations and foodstuffs. It offers a combination of carotenoides, tocopherols and phytosterols. By this method the basic plant material; nettle, sumac, stellaria and pine or their mixtures undergo a triple distillation with methanol. The combined fractions are vacuum-evaporated, the total extract dissolved in propylene glycol and the resulting solution triple-extracted with petroleum ether. The combined petroleum ether extracts are vacuum evaporated. The resulting fat-soluble residue is treated with alcoholic potassium hydroxide solution and the mixture is once again subjected to a triple extraction with petroleum ether. The combined extracts are washed with distilled water to neutral reaction and the organic solvent separated by vacuum distillation.
BG9346990A1990-12-171990-12-17Method for biology- active concentration
BG49706A3
(en)