SU1514240A3 - Method of producing stable cyclodextrin-pyrethrum complexes - Google Patents

Abstract

An abstract of camomile plant material is stabilised as an inclusion complex with cyclodextrin. The complex can be formulated into pharmaceutical and cosmetic compositions or into animal feeds. The material complexed may be obtained from Flores chamomillae and/or Anthemis nobilis and/or Achillea collina. More specifically the complexed material may be "blue-oil" or aroma and/or flavour extracted from camomile plant material.

Description

The invention relates to biology and can be used in the manufacture of preparations containing cyclodec string chamomile inclusion complexes.

The purpose of the invention is to increase the stability of the target product.

Example 1. 10, Og β-cyclodextrin (moisture content of 14.46Ζ) is dissolved in 180 ml of 30Ζ-ηογο ethanolic solution of water at 50 ° C with constant stirring. A solution of 1 g of chamomile oil in ten-fold diluted ethanol is added dropwise to the solution of C-cyclodextrin. After 4-3 minutes after the addition, the mixture becomes cloudy and a crystalline adduct begins to precipitate. Then after 4.5-5 hours, the mixture is slowly cooled to room temperature. Stirring is stopped and the complex is held for

16 h in the refrigerator. The mixture is filtered through a glass filter and dried over phosphorus pentoxide at room temperature. Obtain 10.06 g of a crystal complex of chamomile oil with / C-cyclo dextrin.

The content of the active principle in the complex is 8.12 and the yield per chamomile oil is 75.04 Ζ. The efficiency of complexation can be enhanced by using a mixer with a large number of revolutions.

The empirical formula and molecular weight can be given only in respect of / z-cyclodextrin ₍₄ H, O ° F m ^'k' 'col · 1135.0. The average molecular weight of sesquiterpene derivatives chamomile oil is about 230, the average MO a peculiar ¹ weight of the complex with the content ^-

3,151

I eat about 77 water approximately! 460.

Obtained according to example 1, the product is a light blue microcrystalline powder with a faint smell of chamomile. The product does not have a melting point, but it begins to decompose at approximately 200 ° C, this temperature is characteristic of the decomposition of p-cyclodextrins.

Solubility in distilled water is 0.030-0.035 g / 100 mp; -in 96% ethanol - 0.030 g / 100 ml only oil dissolves in benzene and chloroform, p> -cyclodextrin is practically insoluble in these solvents. (These data refer to a temperature of 25 ° C).

Aqueous solutions of complexes are always slightly opalescent.

The complex is stable at room temperature and can be stored without decomposition for at least five months.

The stability of the product according to example 1 with respect to oxidation is shown in table. one.

From tab. 1 it follows that the absorption of oxygen by the complex compared to the absorption of oxygen by pure chamomile oil can be neglected.

When regimen is taken, neither chamomile oil nor cyclodextrin is toxic. These two components do not form a covalent bond and the complex dissociates under physiological conditions.

Proof of activity by examining the action of the reticulo-endotalial system. The functioning of phagocytes of the reticulo-endothelial system causes histamine, which is a chemical activator. Histamine makes possible the transition of peripheral capillary endothelial cells of veins in a short time into phagocytes, which accumulate in their body the injected dye similar to the cells of the reticulo-endothelial system of the liver, spleen or bone marrow.

Since chamomile also releases histamine and activates the reticulo-endothelial system, the effectiveness of pure chamomile oil and the inclusion complex can be compared in the sequence of the removal of the dye injected into the bloodstream.

4240 4

E as experimental animals were used male GHRP mice with a body weight of 25 ^ 2 g (SGHR means an international strain possessing this genetic information). 0.5 ml of a 107% solution of the dye (25 g body weight) in physiological saline was injected into the tail vein. In that

17 gelatin was added to stabilize the colloidal system. A suspension containing carbon particles with a diameter of not more than 0.2–1p was used, because a solution with large particles caused a blockage of the pulmonary veins and the animals died from embolism. Before injection of the dye, mice were subcutaneously injected twice with 0.5 ml of physiological saline 20 Pa salt. Animals were given 1 hour before the injection of the dye to reg 5 mg of chamomile oil or 5 MP containing the product described in Example 1. Isolation of the dye

25 controlled photometrically.

After intravenous administration of the dye, for all five minutes, 10 ml of blood was sucked into the measuring pipette; the blood was homogenized.

30 in weakly alkaline water, after which the absorption of light by the solution was determined photometrically.

The sequence of the selection of the dye from the blood of control animals

$ 3 and. Animals, which was administered the appropriate drug is given in Table. 2

The introduction of the dye increased blood extraction by an average of 257. Tab40 personal data show a decrease of this value in groups of 8 animals (on average).

Toxicity studies of p-cyclodextrin-chamomile complexes

45 inclusions show that the complex is non-toxic.

10 female mice (body weight 20–25 g) were obtained in the form of a suspension of chamomile regulative complex in an amount of up to 3000 mg / kg body weight (corresponding to 234 mg of active ingredient / kg body weight), as well as 10 male ml (body weight 20–20 kg). 25 g) received under the same conditions a complex in the amount of up to

55 3000 mg / kg body weight (corresponds to

264 mg active / kg

body). No toxic effects were observed, 10 females and 10

male rats (body weight 150-200 g) po1514240

6

5,000 mg of the chamomile complex per kg of body weight (corresponding to

430 mg of active principle / kg of body weight

body), in this case also not observable,

• about

given a toxic effect.

Example 2. Getting kompleh.a include flavoring compounds of chamomile and p-piclodextrin.

10 g of p> -cyclodextrin was dissolved (θ in 70% by volume aqueous ethanol at 50 ° C, after which 2.5 g of chamomile aromatic compounds obtained from 30 g of chamomile flowers were added as a solution in 10 ml of ethyl alcohol. 15 After 10-12 minutes after the addition, the system becomes turbid, after which the heating is stopped and the reaction mixture is cooled for 4 hours with constant stirring to room temperature.

temperature The mixture is kept for 16 hours in a refrigerator, filtered through a glass filter and dried over pentoxide phosphorus. 10.8 g of a yellow-white crystalline product are obtained which contain approximately 12% by weight of active principle.

To obtain a complex containing aromatic and fragrant substances of chamomile flowers, Roman chamomile extract is preferably used (Apieppv ηοΦϋΐβ), since it only slightly contains the components characteristic of the filtered paraffin distillate, and is mainly a source of flavoring and fragrant substances.

reactions

Saturated warm water-eta-1 zero cyclodext-solution | +

Rina>

warm ethanolic solution of chamomile oil or chamomile extract

(mixing)

warm water-ethanol solution of inclusion complexes

crystals of cyclodextrin-chamomile + mother liquor

"cyclodextrin-chamomile

(cooling)

of the inclusion complex +

(separation)

crystals of cyclodextrin and mashrack inclusions (target product)

removable mother liquor

Table 1

Time h Oxygen absorption, ml / mg Chamomile oil 5> -Ci Claude Chrome Mask Complex 70 6 2 80 14 four 120 18 five 160 23 7 200 thirty 7 240 58 7 280 80 7 320 100 7

eight

7

1514240

table 2

The period of time after injection of the dye Е С 1 ”Εϋ5 —————— · * - _to Е ₀ 100 Control Chamomile oil The product according to example 1 Between 10-20 min 2.63 7.78 6.75 Between 20-30 min 3.43 3.30 5.60 Between 30-40 min 1.69 5.47 4.67 Only between 10-40 minutes 8.15 16.55 17,12

Note. The exact value of the extinction at time 0 cannot be determined.

Εί is the extinction value measured at the time point * after injection of the dye.

E is the extinction value measured before injection of the dye.

Claims (1)

METHOD FOR OBTAINING STABLE CYCLODEXTRIN-ROMADISH COMPLEXES, inclusions, characterized in that, in order to increase the stability of the target product, they mix the water-ethanol solution of p-cyclodextrin with an ethanol content of 30Ζ with an ethanol solution of chamomile oil or chamomile extract at 50 ° C, and the resulting mixture of the ethanol solution of chamomile oil or chamomile extract at 50 ° C, the resulting extract of the ethanol 30Ζ with chamomile oil or chamomile extract at 50 ° C. stirring to room temperature, after which it is kept without stirring and the precipitated crystals of the cyclodextrin-chamomile inclusion complex are separated and dried,