| 摘要 |
The invention relates to a process for preparing lyophilized aqueous total extracts from plantain - Plantago sp. and marigold - Calendula off., consisting of the water extraction of the plant material previously conditioned by drying and ground up to a particle size ranging from 2 to 5 mm, while boiling, at a plant material/water ratio of 50 g/l for Plantago sp. and 30 g/l for Calendula off., in a reactor provided with stirring means and steam heating mens, said operation being performed for 30 min, at a temperature of 92...95 degree C, while stirring at 80...100 rpm, followed by the separation of the extract by filtration or filtering centrifugation, after cooling, vacuum concentration at a temperature of 40...45 degree C and a concentration ratio of 1/8...1/10, pasteurization for 2...5 min at a temperature of 78...83 degree C, fast cooling on an ice bath and final liophylization for conditioning and stabilization, thereby resulting extracts whose composition, pointed out by specific determination procedures, indicates the presence of the biologically-active components identified by polyphenol-carboxylic acids and polyholosides.
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