The diffusion medium used was ml distilled water containing 0. The cellophane membrane acts as a barrier between the gel phase and distilled water containing 0. A quantity of 1 ml sample was withdrawn from receptor fluid at the time interval of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 hours. The released drug was estimated by using Shimadzu UV-visible spectrophotometer at nm.
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Rahil G. Bhura, Khushboo A. Bhagat and Samir K. Nano Emulgel emerged as one of the most interesting topical drug delivery system as it has dual release control system. Also the stability of emulsion is increased when it is incorporated into gel.
The Nano emulgel was developed using polymers like carbopol of gel and emulsion. Drug-excipients interaction was characterized by FTIR studies. The Nano emulgel was prepared by preparing emulsion and gel separately and incorporation emulsion into the gel. The emulgel was evaluated for their physical appearance, pH evaluation, Spreadability, rheological study, drug content, in- vitro permeation study and accelerated stability study.
After all evaluation it can be concluded that Adapalene emulgel could increase the drug permeability across the membrane and fast release of the drug could be achieved successfully. The term sublingual, rectal, parental, topical, inhalation etc.
So, oil and water stabilized by directly treat cutaneous disorder or the cutaneous an interfacial film of surfactant molecule. Biocompatible gels having weak interaction even medicated adhesive systems are in use. The dispersed phase can have either a have been exploited to increase the viscosity of hydrophobic-based oil-in-water , or be aqueous nanoemulsion for transdermal delivery.
It is based water-in-oil. Because there are two incorporation of nano emulsion into gel matrix can incompatible phases in close conjunction, the result in nanoemulgel which may be more relevant physical stabilizing system. In most pharmaceutical for transdermal application when compared to emulsions and the stabilizing system comprises nanoemulsion.
It promotes better stability of surfactant ionic or nonionic , polymers nonionic nanoemulsion by reducing the surface and polymers, polyelectrolyte, or biopolymers , or interfacial tension and also enhancing viscosity of mixtures of these.
Besides that, drug delivered through Emulsion of Adapalene using Soyabean oil as the nanoemulgel has larger concentration gradient oil phase and water as the aqueous phase with span towards the skin, hence influences better the skin 80, Tween 20 and tween 80 as emulsifying agents, penetration.
It was gel based formulation of Isopropyl alcohol as the permeation enhancer. Formulation of gel using thickening Glycerine used as humectant. Step 2: The gel agents, increase the consistency of any dosage formulation were prepared from with carbopol Finally nanoemulgel will be produced by the But the optimum concentration for the emulgel incorporation of nanoemulsion into the gel base with respect to consistency, Extrudability and with in continuous stirring.
Step 3: The obtained as a gift sample from Zydus emulsion and gel formulation were mixed in the pharmaceutical ltd. Carbopol , Tween 80, ratio of as and homogenized to get an uniform Glycerine, Soyabean oil, Isopropyl alcohol was emulgel of Adapalene. The different formulations procured from orbit pharmaceutical ltd. Adapalene was prepared in three steps. Determination of globule size: The globule size the Brook field viscometer Brookfield. The analysis of the optimized formulations was the emulgels were rotated using spindle 1 at 10, 50 and determined by Zetasizer.
Spreadability test: One of the criteria for the 2. Physical appearance: The prepared emulgel dermatological preparation is to meet the ideal formulations were inspected visually for their qualities of that it should be possessed good color, phase separation, homogenecity and Spreadability.
Spreadability is the term expressed consistency. The pH of affected area. The therapeutic efficiency to the the emulgel should be between 6 to 7 to mimic the formulation is depending on its Spreadability skin condition. The pH of the prepared emulgel is values. So determination of Spreadability is very acidic or basic. It causes irritation to the patient.
The Spreadability of the each sample was electrode into the emulgel. In triplicate the evaluated in triplicate using with fabricated measurement of the pH of each formulation was Spreadability apparatus with consists of two glass done and average values were calculated. Rheological study: The viscosity of the gel the sample.
Force was applied by adding increasing during handling, transport and storage is the weight slow at 1 min interval into the pan Khushboo et al. Sample was tested for diffusion apparatus having capacity of 10 ml three times the constant temperature and weight volume. Sigma dialysis Membrane was the isolated and the mean values of spread surface area on to and used for the study. Preweighed 1g emulgel the lower plate were calculated. The sigma dialysis membrane was clamped between donor 6.
Extrudability: It is a usual empirical test to and receptor compartment. The receptor measure the force required to extrude from material compartment was filled with 10 ml of purified tube. The sample 0. The emulgels were filled into crimped, discussed earlier.
Drug content determination: Drug 9. Stability studies: Stability of a drug is defined concentration in emulsified gel was measured by as the ability of particular formulation in specific HPLC. Adapalene content in the emulsified gel container to the remaining into its physical, was measured by dissolving accurately weighed toxicological, specification, chemical and 5gm in 50ml of emulsified gel in solvent purified therapeutic. Heated for 5 min and Sonication for 15 min.
Determination of globule size: The globule size analysis of the optimized formulations was 8. In-vitro drug permeation study: In-vitro determined by Zetasizer.
The pH of digital pH meter Lab India by dipping the glass the emulgel should be between to mimic the electrode into an emulgel. The measurement of pH skin condition. If the pH of the prepared emulgel is of each formulation was done in triplicate and acidic or basic, it may cause irritation to the patient. No Formulation code pH 1 F1 6. Rheological study: The viscosity of the gel a Brook field viscometer Brookfield. The during handling, transport and storage is an emulgels was rotated using spindle 1 at 10, 50 and important criteria.
The viscosity of different rpm and the viscosities were measured. Spreadability test: One of the criteria for a sample was evaluated in triplicate by using dermatological preparation is to meet the ideal fabricated Spreadability apparatus which consists qualities is that it should possess good of two glass plates. Spreadability is the term expressed the lower plate and the upper plate was placed on to denote the extent of area to the gel readily the top of the sample.
Force was generated by spreads on application to skin or the affected area. Each depends on its Spreadability values. So, sample was tested at least three times at constant determination of Spreadability is important in temperature and exerted weight and the mean evaluating gel characteristics.
The Spreadability of each were calculated. Formulation code Spreadability g. Extrudability: It is a usual empirical test to the applied shear in the region of the rheogram measure the force required to extrude the material corresponding to the shear rate exceeding the yield from tube. The method applied for determination of value and exhibiting consequent plug flow.
The Khushboo et al. Drug content determination 8,9 :Drug by Sonication phosphate buffer pH 7. Heated for concentration in emulsified gel was measured by 5 min Sonication for 15 min.
The test was HPLC. Sigma dialysis Membrane was isolated at suitable time intervals and analyzed for drug and used for the study. Preweighed 1g emulgel content by HPLC after appropriate dilutions as was spread evenly on to the membrane. The sigma discussed earlier. The same procedure was opted dialysis membrane was clamped between donor for Adapalene prepared by using carbopol The receptor Khushboo et al.
Hence, to concentration of gelling agent. The optimized overcome the above drawback it is required to formulations showed a shear thinning with administer the drug by topical route which is more thixotropic property with better Spreadability and beneficial over oral route of administration. In the study, it was observed that Spectrophotometry by comparing test with the concentration of span 80 tween 20 and tween 80 standard using polymer solvent system.
All the permeability. Amount of hydrogel mixed with the formulations were evaluated for stability and emulsion was also having the effect on drug gelling was done using carbopol Preliminary permeation from the formulation showing direct data shows that good stable emulsion can be drug retardant release from the successfully achieved using high pressure formulations. Adapalene emulgel which could homogenized converting globule size into increase the drug permeability across the nanometer.
When compared with the concentration was used for all the batches and was market preparation nanoemulgel formulation shows evaluated using design of experiment. On the basis better inviro permeation with confirm that of priliminary work we found that carbopol nanoemulgel can help in better penetration of this with concentration in ratio with shows better found of drug which are highly insoluble.
On the Khushboo et al. Amount of gel mixed with the F9 were produced. They were evaluated for emulsion was also having the effect on drug physical appearance, pH evaluation, rheological permeation from the formulation showing direct study, Spreadability study, drug content and in- drug retardant release from the formulations. Batch vitro permeation study.
Emulgel a recent approch for topical drug delivery system. Asian Journal. Formulation and evaluation of itraconazole emulgel for topical drug delivery. International journal of universals pharmacy band biosciences.
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EMULGELS: A NOVEL FORMULATION APPROACH FOR TOPICAL DELIVERY OF HYDROPHOBIC DRUGS
Mohamed, Phone: , Fax: , Email: moc. Corresponding author. Received Dec 31; Accepted May Abstract This study was conducted to develop an emulgel formulation of chlorphenesin CHL using 2 types of gelling agents: hydroxypropylmethyl cellulose HPMC and Carbopol The influence of the type of the gelling agent and the concentration of both the oil phase and emulsifying agent on the drug release from the prepared emulgels was investigated using a 23 factorial design. The prepared emulgels were evaluated for their physical appearance, rheological behavior, drug release, antifungal activity, and stability. Commercially available CHL topical powder was used for comparison.
Optimization of chlorphenesin emulgel formulation