KR101690864B1

KR101690864B1 - Preparation method of coating solution comprising rice starch and coating solution prepared thereby method

Info

Publication number: KR101690864B1
Application number: KR1020150040861A
Authority: KR
Inventors: 이범진; 박철훈; 정승호
Original assignee: 아주대학교산학협력단
Priority date: 2015-03-24
Filing date: 2015-03-24
Publication date: 2016-12-28
Also published as: KR20160114400A

Abstract

The present invention relates to a process for producing a coating solution containing starch derived from glutinous rice. The starch derived from glutinous rice is spray-dried thermally modified glutinous rice starch through physicochemical transformation. The glutinous rice starch crosslinks the molecular chains of starch through interaction with glycerol to form a rigid polymer network structure in starch particles, . The coating solution comprising the glutinous rice starch according to the present invention can be used to constitute a pharmaceutical preparation comprising particles, granules, pellets, tablets or film formulations, thereby preventing the pharmaceutical preparation from being palpable , A controlled release ability for a specific drug, and the stability of the active ingredient can be further secured. It can also be prepared as an aqueous solution and thus can be provided as a coating solution useful in terms of solvent cost and environmental pollution.

Description

The present invention relates to a method for preparing a coating solution containing glutinous rice starch and a coating solution prepared thereby,

The present invention relates to a manufacturing method and a utilization thereof as a coating solution containing physicochemically modified starch derived from glutinous rice.

Starch is highly utilized as a food and medicine material, and plays a role of an excipient as a very important basic material in the pharmaceutical industry and plays a role in maintaining the shape of a molding in the production of tablets. Most natural starches, however, tend to be destroyed by long-term heating, high shear rate and high pH, and are unstable in the process of aging and aging, which limits their application to pharmaceuticals. Therefore, in order to improve these physical properties, modified starch modified with physicochemically modified starch is used. Modifying starch, which is a major component of glutinous rice, not only has new properties but also improves the original disadvantages of starch. That is, starch modified starch is converted to physical and chemical treatment to overcome the limitation of general starch. Modified starch imparts new functions to utilize starch more usefully and expand its range of use, Food, and paper industries.

Cross-linking, which is widely used among various chemical modification methods, cross-links the molecular chains of starch to form a rigid polymer network structure within the starch particles, thereby imparting properties such as electrical conductivity, heat resistance and acid resistance.

Soft capsules using starch as the main film base consist of starch or starch derivatives, gums, plasticizers, buffer (metal salts) and purified water. Starch, which occupies the highest mixing ratio in forming a film, shows a phenomenon of retrogradation that is hardened and left to return to its original crystalline state when left untreated.

On the other hand, a coating composition for soft capsules characterized by using Kappa-carrageenan and water-soluble or water-dispersible protein and potassium salt and defining the ratio of plasticizer has been disclosed (see Patent Document 1), and kappa-carrageenan A coating composition for soft capsules prepared using Ramda-carrageenan was disclosed instead (see Patent Document 2). In this case, the soft capsule coating composition is prepared by blending starch, lambda-carrageenan, metal salt, dextrin, plasticizer and purified water.

However, in addition to the aforementioned patents, due to the material limitations of the present day mechanism, the possibility of using starch from glutinous rice as a coating agent for various solid preparations has not been disclosed.

1. U.S. Patent No. 6,214,376. 2. PCT International Patent Publication No. WO 2008/117682.

Accordingly, it is an object of the present invention to provide a process for producing a coating solution containing starch derived from glutinous rice.

It is another object of the present invention to provide a coating solution containing starch derived from glutinous rice.

In order to accomplish the above object, the present invention provides a method for producing thermally modified rice starch, comprising the steps of: preparing a thermally modified rice starch by dispersing glutinous rice starch in a solvent and heating and then slurrying the mixture; A second step of spray drying the heat-denatured glutinous rice starch to prepare spray dried thermally modified rice starch; Drying the thermally modified glutinous rice starch powder in purified water, mixing the glutinous rice starch powder with at least one additive selected from the group consisting of a plasticizer, a coating aid, a pigment, and an anti-adhesion agent; The present invention provides a method for producing a coating solution containing glutinous rice starch.

According to another aspect of the present invention, there is provided a coating solution containing glutinous rice starch prepared by the above method.

The present invention relates to a method for producing a coating solution containing starch derived from glutinous rice, and more particularly, to a method for producing a thermally modified glutinous rice starch by slurry obtained by dispersing glutinous rice starch in a solvent, ; A second step of spray drying the heat-denatured glutinous rice starch to prepare spray dried thermally modified rice starch; Drying the thermally modified glutinous rice starch powder in purified water, mixing the glutinous rice starch powder with at least one additive selected from the group consisting of a plasticizer, a coating aid, a pigment, and an anti-adhesion agent; The coating solution of the present invention solves the problem of glutinous rice starch which does not swell in cold water by physically and chemically modifying amylose and amylopectin of glutinous rice starch, and thus is useful as a pharmaceutical coating agent .

1 is a graph showing the average particle size distribution of thermally modified glutinous rice starch derived from glutinous rice and spray dried thermostable glutinous rice starch according to the present invention,
FIG. 2 shows the results of observing the shape of thermally modified glutinous rice starch and spray-dried thermostable glutinous rice starch from glutinous rice according to the present invention,
FIGS. 3 and 4 are graphs showing roughness of a film surface sprayed with a coating solution containing thermally modified glutinous rice starch derived from glutinous rice and spray-dried thermostable glutinous rice starch according to the present invention,
FIG. 5 shows the results of evaluation of the suitability of a coating solution containing thermally modified glutinous rice starch derived from glutinous rice according to the present invention and spray-dried thermostable glutinous rice starch,
FIG. 6 is a graph showing the dissolution of a preparation coated with a coating solution containing glutinous rice-derived heat-denatured glutinous rice starch and spray-dried thermostable glutinous rice starch according to the present invention.

Hereinafter, the composition and the preparation method of the coating solution containing the glutinous rice starch of the present invention will be described in detail.

The glutinous rice starch is composed of linear amylose and branched amylopectin represented by the following formula 1 and has a high amylopectin ratio of 99.70% as compared with other starches, so that the starch can not be swollen in cold water, It is difficult to utilize it.

[Chemical Formula 1]

Accordingly, the inventors of the present invention prepared spray-dried thermally modified glutinous rice starch by spray-drying thermally denatured glutinous rice starch modified with heat of glutinous rice starch to solve the above problems, and developed a coating solution containing the same. Completed.

Accordingly, the present invention relates to a method for producing thermally modified rice starch (TMR), comprising the steps of: preparing a thermally modified rice starch (TMR) by dispersing glutinous rice starch in a solvent and heating the slurry; A second step of spray drying the thermally modified glutinous rice starch to prepare spray dried thermally modified rice starch (SDTMR); Drying the thermally modified glutinous rice starch powder in purified water, mixing the glutinous rice starch powder with at least one additive selected from the group consisting of a plasticizer, a coating aid, a pigment, and an anti-adhesion agent; The present invention provides a method for producing a coating solution containing glutinous rice starch.

The thermally-modified glutinous rice starch of the first step is prepared by drying at a temperature of 100 to 200 ° C for 3 to 6 hours.

If the above range is exceeded, the amylose and amylopectin of the glutinous rice starch may be less denatured or excessively denatured.

In addition, the spray-dried thermostable glutinous rice starch of the second stage is heated at a temperature of 100 to 150 ° C., an air temperature of 80 to 90 ° C., an inflow rate of 0.5 to 1.0 M ³ / min, a pump of 1.0 to 10.0 mL / X 10 kPa. &Lt; / RTI >

If the spray drying condition is exceeded, clogging of the slurry in the nozzle of the spray dryer may occur, and it may become difficult to obtain spongy aggregates through drying of the powder.

The plasticizer may be at least one selected from the group consisting of glycerol, hydroxypropylmethylcellulose (HPC-LF) and polyethylene glycol (PEG), more preferably glycerol, It is not.

The film aid is selected from the group consisting of polyethylene glycol, ethyl cellulose, glycerides, titanium oxide, talc, diethyl phthalate, triethyl citrate, and mixtures thereof.

The method may further include a fourth step of homogenizing and stabilizing the mixed mixture after the third step.

Accordingly, the present invention can provide a coating solution containing the glutinous rice starch prepared through the above-described method.

The coating solution may be used to formulate pharmaceutical preparations comprising particles, granules, pellets or tablets and film formulations. By forming the coating layer, the stability of the active ingredient can be further secured.

The method of forming the coating layer may be appropriately selected by those skilled in the art from among the methods capable of forming a film-like coating layer on the surface of the tablet layer, and a fluid bed coating method or a pan coating method may be applied, A fan coating method can be applied.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to the following examples.

< Example 1> Spray drying from glutinous rice Thermal degeneration Production of glutinous rice starch

First, the glutinous rice was ground in a blender for 10 to 30 minutes and sieved through a No. 60 sieve to obtain glutinous rice starch powder. Then, 160.0 g of glutinous rice starch powder was dispersed in 200 ml of purified water for 6 hours, homogenized with a homogenizer for 10 minutes, and then applied to a drying table. The drying rack was placed in an oven and dried at a temperature of 130 ° C for 3 hours or more, and then sieved through a No. 60 sieve to obtain a thermally modified rice starch (TMR).

An additional process through the spray dryer of thermally denatured glutinous rice starch has the advantage of reducing the particle size and increasing the solubility and homogeneity of the starch as a coating base.

Thus, the heat-denatured glutinous rice starch was prepared by spray-dried thermally modified rice starch (SDTMR) using a spray dryer (Model: Eyela SD-1000 spray dryer) according to the process conditions shown in Table 1 below.

Spray drying conditions Process variable Set Injection air temperature 120 DEG C Exhaust air temperature 80 ± 5 ° C Inflow rate 0.5 to 1.0 m < ³ > / min Pump 1.0 to 5.0 ml / min Spray pressure 10 x 10 kPa

< Example 2> Spray drying from glutinous rice Thermal degeneration Manufacture of coating solution containing glutinous rice starch

The components of Comparative Examples and Preparation Examples of the coating solution using the spray-dried heat-denatured glutinous rice starch as the main coating agent of the glutinous rice according to the present invention are shown in Table 2 below. As a comparative example, a coating solution containing thermally modified glutinous rice starch not spray-dried was prepared. In addition, to evaluate the suitability as a coating solution, a coating solution was prepared by mixing polyvinyl alcohol or hydroxypropylmethylcellulose with Opadry ); Colorocon, USA) and hydroxypropylmethylcellulose were dissolved in purified water together with polyethylene glycol 8000, a plasticizer, to prepare a control.

In the case of Opadry I, which is a control example, the product name is a film coating solution commercially available as Opadry 03B64650. The composition ratio of the film coating agent and the film auxiliary agent in the film coating solution was 62.5% for hydroxypropylmethylcellulose 2910, 30.79% for titanium oxide, 6.25% for polyethylene glycol 400, 0.27% for yellow iron oxide, 0.18% for red iron oxide and 0.01% And Comparative Example 1 was prepared by dissolving 24.0 g of the coating solution in 120 g of purified water. In the case of Opadry II, which is a comparative example, Opadry 85F28751 is a film coating solution. The coating solution is composed of polyvinyl alcohol, polyethylglycol 3000, talc and titanium oxide. 24.0 g of the coating solution is dissolved in 120 g of purified water In water to prepare Control Example 2.

In the case of Formulation Examples 1 to 4, 2.4 g of a plasticizer was added to 2.40 g of each polymer as a main coating agent, and the mixture was mixed for 2 hours. Then, the pigment and anti-adhesion agent were added thereto and homogenized at a rate of 250,000 RPM for 10 minutes using a homogenizer .

Usage Encapsulation
(Film former) The plasticizer (g)
( Plasticizer ) Attach
Inhibitor
(g) Pigment (g)
(Pigment) Coating Solvent (g)
(Solvent) Material name Polymer * PEG 8000 HPC-LF Glycerol Talc Water soluble blue No.1 Purified water Control Example One Opadry I
(HPMC based) - - - - - 120.0 Control Example 2 Opadry II
(PVA based) - - - - - 120.0 Control Example 3 HPMC 6cps 2.4 - - 0.72 0.005 135.6 Comparative Example One Heat-denatured glutinous rice starch
(TMR) - - 2.4 0.72 0.005 135.6 Formulation example One Spray drying
Heat-denatured glutinous rice starch
(SDTMR) - - - 0.72 0.005 135.6 Formulation example 2 Spray drying
Heat-denatured glutinous rice starch
(SDTMR) 2.4 - - 0.72 0.005 135.6 Formulation example 3 Spray drying
Heat-denatured glutinous rice starch
(SDTMR) - 2.4 - 0.72 0.005 135.6 Formulation example 4 Spray drying
Heat-denatured glutinous rice starch
(SDTMR) - - 2.4 0.72 0.005 135.6

* 24.0g of each polymer was used.

< Test Example 1> Particle size analyzer (PSA)

The average particle size distribution of thermally modified glutinous rice starch and spray-dried thermostable glutinous rice starch from glutinous rice prepared by Example 1 was measured using a laser diffraction method (HELOS, Helium-Neon Laser Optical System) The results are shown in Fig. At this time, sample injection was performed at a pressure of 3 bar using a dry module. As a result, it was confirmed that the mean particle size distribution of the thermally modified glutinous rice starch after spraying was 7.8 μm, and the average volume particle size of the thermally modified glutinous rice starch was reduced by about 20 times as compared with 132.7 μm of the conventional thermally modified glutinous rice starch.

< Test Example 2> Scanning electron microscopy (SEM) SEM )

In order to confirm the surface morphology and the formation of the particle size of the heat-denatured glutinous rice starch and spray-dried thermostable glutinous rice starch from glutinous rice prepared in Example 1, the shape was observed using a scanning electron microscope. As a result, as shown in FIG. 2, the conventional thermally modified glutinous rice starch had a spongy shape in the case of heat-denatured glutinous rice starch after spray-drying process, while the non-uniform modified starch was large and wide, It was confirmed that the particles of one size are gathered close to each other and gathered. It was also confirmed that the heat-denatured glutinous rice starch particles having a size of 100 μm or more sharply decreased to 20 μm or less upon spray drying. This is expected to have a significant influence on the film formation through the preparation of the coating solution of Comparative Example 1 and Preparation Example 4. [

< Test Example 3> Physicochemical properties of films coated with coating solution containing glutinous rice starch

1) Thickness, tensile strength and toughness

The coating solution containing glutinous rice-derived heat-denatured glutinous rice starch or spray dried thermostable glutinous rice starch prepared in Example 2 was coated on the OHP film to have a suitable thickness.

Then, tensile strength and toughness were measured using a TA-XTS texture analyzer (Model: TA-XTS Texture Analyzer), and the thickness of the film layer was measured by a vernier caliper measuring machine.

Example Thickness (mm) Tensile strength (N) Toughness (mm) Control Example 1 (Opadry I) 0.112 + 0.012 26.17 + - 4.02 1.6 ± 0.2 Control Example 2 (Opadry II) 0.107 ± 0.008 13.43 + - 4.88 0.8 ± 0.2 Comparative Example 1
(TMR + glycerol) 0.123 + 0.022 2.52 ± 0.29 0.3 ± 0.2 Preparation Example 1 (SDTMR) 0.103 ± 0.009 5.15 + 1.05 0.5 ± 0.1 Formulation Example 2
(SDTMR + PEG8000) 0.112 + 0.014 0.57 ± 0.16 0.2 ± 0.1 Formulation Example 3
(SDTMR + HPC_LF) 0.121 + 0.014 11.58 ± 1.57 0.6 ± 0.1 Formulation Example 4
(SDTMR + glycerol) 0.109 0.010 9.12 ± 2.44 0.9 ± 0.3

2) roughness degree

The degree of roughness of the film coated in Test Example 3 was measured using a confocal microscope (Model: OLS 3000-300 mm autostage), and the results are shown in FIG. In addition, the Roughness index (SRa), i.e., the roughness value, calculated by the CLSM software is shown in Table 4 below. The roughness value means that the lower the value, the lower the roughness. Therefore, it was confirmed that Formulation Example 4 has the lowest roughness value.

Furtherance Roughness index, SRa Comparative Example 1 5.751 Formulation Example 1 0.734 Formulation Example 2 0.925 Formulation Example 3 0.691 Formulation Example 4 0.565

< Test Example 4> Thermal degeneration Properties of tablets coated with coating solution containing glutinous rice starch

The coating solutions of Control Example 3 and Preparation Examples 1 to 4 prepared in Example 2 were coated on a placebo using a coating pan (Hi-coater, Freund), and the properties were evaluated and shown in FIG. The suitability of the coating solution was evaluated through property confirmation. The surface and the cross section were visually observed or confirmed by a confocal microscope. As a result, in Comparative Example 3, a film coating layer having a smooth surface and a constant thickness was formed. In the case of Formulation Example 1 using only SDTMR, irregular thickness and the edge And in the case of Formulation Example 2 using polyethylene glycol, a very irregular coating film and a surface were observed to be torn out. As a result, it was confirmed that the interaction between SDTMR and polyethylene glycol was not good. In the case of Formulation Example 3, smooth surface and coating film were formed, but it was confirmed that the coating film was slightly torn off at the corner portion. In the case of Formulation Example 4, a coating film having the smoothest and constant thickness among the SDTMR coatings was formed, . Thus, it was confirmed that the composition of Formulation Example 4 is suitable for the coating of pharmaceutical tablets.

< Test Example 5> Thermal degeneration Elution test of tablets coated with coating solution containing glutinous rice starch

A dissolution test was carried out using an oral preparation (100 mg formulation) of a saponyl nitrate hydrochloride coated with a coating solution prepared according to the formulation of Preparation Example 4 in Example 2 above.

The dissolution experiment was carried out according to Korean Pharmacopoeia dissolution assay method No. 2 (paddle method), and the results are shown in FIG. 5 and FIG. At this time, the measurement conditions were set to the first and second disintegration test methods, the test liquid amount of 900 mL, the paddle rotation number of 50 RPM, and the temperature of 37.5 ° C.

One) Sapphire grill Preparation of tablets containing hydrochloride

First, granules containing the saponilate hydrochloride of Preparation Example 5 were prepared so as to have the same weight as in Table 5 per unit dosage form. Some microcrystalline cellulose, lactose monohydrate and polyvinylpyrrolidone (Polyvinylpyrrolidone K-30, Kollidon K 30, PVP-K30) were added to the saponyl chloride hydrochloride and mixed for about 2 minutes. Then, it was sifted in 30 mesh sieve and sifted twice. The sieved mixture was mixed with the remaining microcrystalline cellulose (Avicel pH 101) and purified water for 3 minutes. The granules were sieved with 18 mesh sieve, dried at 60 ° C for 1 hour, and sieved with 20 mesh sieves to obtain granules. Magnesium stearate was added to the sieving process. The final granulated product was tableted at a tabletting pressure of 50, a main pressure of 45 using a rotary tablet machine (DCM-Korea RT-8) so that the tablet had a circular shape with a diameter of 10.5 mm and a hardness of 12 to 12.0 kp.

Formulation example 5 function Material name mg / T drug Sarpogrelate HCl 100.0 Excipient Lactose monohydrate 122.0 Excipient Microcrystalline cellulose (Avicel pH 101) 60.0 Binder PVP K-30 (Kollidon K 30) 15.0 Lubricant Magnesium stearate 3.0 total 300.0

2) Coating solution preparation and coating

The tablet prepared in 1) of Example 6 was filled in a coating pan (Hi-coater, Freund), and then the coating solution prepared in the composition of Preparation Example 4 in Example 2 was sprayed with a spraying device operated by air pressure (Process conditions: injection air temperature 67 ° C, discharge air temperature 46 ° C, purification temperature 40-45 ° C, rotation speed 18.47, injection pressure 0.15 MPa) and air was further supplied for about 10 minutes to keep it dry. The coating amount of the tablet thus obtained was 3% to 15% (w / w) per tablet per the tablet.

As a result, in the oral preparation of the sapogenate hydrochloride, the tablets showed 80% release at 2 hours in the artificial gastric juice whereas tablets coated with 12 to 15% (w / w) coating release about 40% And the dissolution of the coating film in the artificial gastric juice state was relatively slow. In the case of artificial intestinal fluids, the coated tablet was controlled release within 60 minutes from the start of the test as compared to the weight of the conventional tablets at 9% (w / w) or more. After 90 minutes, It was confirmed that at least 80% by weight eluted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that such detail is solved by the person skilled in the art without departing from the scope of the invention. will be. Accordingly, the actual scope of the present invention will be defined by the appended claims and their equivalents.

Claims

A first step of preparing a thermally modified rice starch by dispersing glutinous rice starch in a solvent and heating and then slurrying the resulting slurry; A second step of spray drying the heat-denatured glutinous rice starch to prepare spray dried thermally modified rice starch; The spray dried thermostable glutinous rice starch is added to purified water, and then mixed with glycerol, a pigment and an anti-adhesion agent; &Lt; RTI ID = 0.0 > 1, < / RTI >

The method according to claim 1,
Wherein the thermally modified glutinous rice starch of the first step is prepared by drying at a temperature of 100 to 200 ° C for 3 to 6 hours.

The method according to claim 1,
The spray dried thermosensitive glutinous rice starch of the second step is heated at a temperature of 100-150 ° C., an air temperature of 80-90 ° C., an inflow rate of 0.5-1.0 M ³ / min, a pump of 1.0-10.0 mL / min and a spray pressure of 10 × Lt; RTI ID = 0.0 > 10 kPa. &Lt; / RTI >

delete

The method according to claim 1,
And a fourth step of homogenizing and stabilizing the mixed mixture after the third step. The method for producing a coating solution according to claim 1,

A coating solution comprising the glutinous rice starch prepared by any one of claims 1 to 6 and 6.

8. The method of claim 7,
Wherein the coating solution is coated with at least one pharmaceutical preparation selected from the group consisting of particles, granules, pellets, tablets and films.