Keywords
Abstract
The article presents the results of research of the technological parameters of the crushed plant material: the gerb of Chinese mint shrub (Elsholtzia Stauntonii Benth.) and Vietnamese balm (Elsholtzia ciliata, Elsholtzia Patrena Thunb.). These results are necessary for the development of optimal technology for
extracts obtaining in laboratory and industrial conditions. Such parameters as loss in mass after drying, specific mass, volumetric mass, bulk density, porosity, cleavage, free volume of the layer, the total ash, ash insoluble in hydrochloric acid and absorption coefficient of the extractant. The yield pattern of the extractive substances in both species was also determined, depending on the extractant used in the row (water, water-alcohol mixtures).
Instrumental and gravimetric methods were used.
The technological parameters of Elsholtzia Stauntonii herb were determined as: specific mass – (1,26 ± 0,08) g/сm3, volumetric mass – (0,46 ± 0,03) g/сm3, bulk density – (0,078 ± 0,005) g/сm3, porosity – (0,60 ± 0,04), cleavage – (0,76 ± 0,04), free volume of the layer – (0,90 ± 0,05), the total ash – (10,21 ± 0,61) %, ash insoluble in hydrochloric acid – (0,58 ± 0,03) %, loss in mass after drying – (7,82 ± 0,23) %. The technological parameters of Elsholtzia ciliate herb were determined as: specific mass – (0,82 ± 0,05) g/сm3, volumetric mass – (0,30 ± 0,02) g/сm3, bulk density – (0,051 ± 0,003) g/сm3, porosity – (0,39 ± 0,02), cleavage – (0,52 ± 0,03), free volume of the layer – (0,75 ± 0,04), the total ash – (8,75 ± 0,52) %, ash insoluble in hydrochloric acid – (1,20 ± 0,07) %, loss in mass after drying – (6,59 ± 0,19) %.
The majority contain of extractive substances from Elsholtzia Stauntonii herb was observed in 20 % ethanol extracts, and from Elsholtzia ciliate herb – in water extracts. Both raw materials are best extracted with the ratio of raw material to extractant as 1:50.