Method of utilization of wastes of process of extraction of medicinal plants

FIELD: chemico-pharmaceutical industry; methods of utilization of wastes of extraction of medicinal plants, for example hawthorn or dog rose.

SUBSTANCE: proposed method consists in washing hawthorn and dog rose berries till flushing water becomes colorless followed by drying first at temperature of 60-65 C and then at 100-105 C, grinding, dispersing and selecting fraction 0.2-2 mm. Proposed method makes it possible to obtain sorbents of required quality which are used for cleaning aqueous solutions from heavy metals and organic contaminants.

EFFECT: enhanced efficiency.

7 ex

 

The invention relates to chemical-pharmaceutical industry, specifically to methods of disposal processes of extraction of medicinal plants such as hawthorn fruit and hips.

Extraction of medicinal plants often spend water when heated to the boil at a ratio of from 1:10 to 1:30 followed by cooling, separation of the extract (tincture) and using it for medicinal purposes [1].

Waste extraction processes often remain unused, sent to the dump and pollute the environment.

The disadvantages of this method is uncertain composition of the waste, environmental pollution.

The purpose of the invention is the recycling of waste in the finished product with quality indicators, the exclusion of environmental pollution.

This goal is achieved by the fact that solid waste processes of extraction of medicinal plants, such as fruits, hawthorn, dog-rose, is recycled to the sorbents that can be used for the purification of aqueous solutions of heavy metals, such as copper and cadmium, and organic pollutants, such as methylene blue.

To obtain sorbents waste washed with water unpainted wash water, dried gradually, first at a temperature of 60-65° (1-2 hours) then at 100-105°to posto is authorized mass crushed, scatter, selected fraction of 0.2-2 mm

Get sorbents - finished products in the form of powders with a bulk weight of 0.35-0.75 g/cm3, fiber content not less than 15% wt. and proteinbound component (the rest), characterized by a nitrogen content by Kjeldahl method is not less than 0.8 wt.%.

Sorbents when the test enable clear aqueous solutions of heavy metals, such as copper and cadmium, with sorption capacity to 5.3 mg/g of organic pollutants, such as methylene blue to 0.6 mg/g

Example 1

40 g of waste extraction hawthorn fruit is washed several times with water to an unpainted water wash, dried for 1 hour at 60-65°With, then at 100-105°C to constant weight, ground, scatter, selected fractions of 0.2-2 mm; get 10 g powder product with a bulk weight of 0.71 g/cm3, fiber content of 24.0% wt. and nitrogen by Kjeldahl method 1,6% wt.

Example 2

Similarly to example 1.64 g waste rosehip extract is treated with water, dried, crushed, dissolved, selected fraction of 0.2-2 mm, obtain 15.6 g of a powdery product with a bulk weight of 0.39 g/cm3, fiber content of 17.2% wt. and nitrogen by Kjeldahl method of 0.95 wt.

Example 3

Testing

In a flask with a capacity of 50 cm3contribute 0.5 g of sorbent waste extraction hawthorn fruit, and 20 ml of an aqueous solution, terasawa 100 mg/l of copper sulfate, mixed, incubated at room temperature for 4 h (until the termination of the sorption analysis for copper). The aqueous layer was separated, in which the chemical analysis found 21 mg/l of copper.

The sorption capacity is 3.2 mg/g (the degree of purification of 70%.

Example 4

Into the flask in example 3 contribute 0.5 g of sorbent waste extraction hawthorn fruit, 20 ml of an aqueous solution containing 134 mg/l of cadmium in the form of sulfate, stirred, incubated in a water layer find 41 mg/l of cadmium.

The sorption capacity of 3.7 mg/g (the degree of purification of 70%.

Example 5

Into the flask for example contribute 0.5 sorbent - waste extraction process rosehip, 20 ml of an aqueous solution containing 100 mg/l of copper sulfate, stirred, incubated 4 h In a water layer find 28.5 mg/l copper. The sorption capacity of 2.9 mg/g (the degree of purification 72%).

Example 6

In example 4 in the flask contribute 0.5 g of sorbent - waste extraction process rosehip, 20 ml of an aqueous solution containing 134 mg/l of cadmium in the form of sulfate, stirred, incubated 4 h in a water layer of cadmium is not detected.

The sorption capacity of 5.3 mg/g (the degree of purification 100%).

Example 7

In a flask with a capacity of 50 cm3contribute 0.5 g of sorbent - waste extraction process hawthorn fruit, and 20 ml of an aqueous solution containing 15 mg/l methylene blue, organic dye, mixed, incubated for 1.5 h in a water layer visual what about in a cell with a thickness of 10 mm blue color is not found.

The sorption capacity of 0.60 mg/g (the degree of purification 100%).

Analogously to example 7 with the sorbent from waste extraction hips in the water layer detected 1.5 mg/l methylene blue.

The sorption capacity of 0.54 mg/l (degree of purification 90%).

Thus, the proposed method allows waste from processes of extraction of medicinal plants such as hawthorn fruit and hips, to obtain sorbents with quality indicators, the ability to use them for aqueous solutions of heavy metals, such as copper and cadmium, and organic pollutants, such as methylene blue.

The source of information

1. Kolesov V.G. and other Medicinal plants: myths and reality. Traditional (folk) medicine through the lens of science. St. Petersburg, SPFA, 1998 s, 148, 155.

The method of disposal processes of extraction of medicinal plants by adsorbents, characterized in that the waste extraction processes rosehips and hawthorn washed with water, dried first at a temperature of 60-65°With, then 100-105°C, crushed, dissolved, selected fractions of 0.2-2 mm



 

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