scholarly journals Uji Stabilitas Sediaan Mikroemulsi Menggunakan Hidrolisat Pati (DE 35–40) Sebagai Stabilizer

2006 ◽  
Vol 3 (1) ◽  
pp. 8-21
Author(s):  
Mahdi Jufri ◽  
◽  
Effionora Anwar ◽  
Putri Margaining Utami

Various solubilization techniques have been developed to enhance the bioavailability of hydrophobic drugs. One of the solubilization techniques is preparation of microemulsion. Microemulsion is a potential carrier in drug delivery system because it has many advantageous characteristics. In this research, hydrophobic drug was made in a dosage form of oil in water (O/W) microemulsion using ketoprofen as a model and investigated the influence of adding starch hydrolisates with dextrose equivalent (DE) 35-40 in variety concentrations (0,0%; 1,5%; 2,0%; 2,5%) to the stability of this microemulsion system. This microemulsion consisted of isopropyl miritate as oil phase, tween 80 and lechitin as surfactants, ethanol as cosurfactant, propylene glycol as cosolvent, starch hydrolisates DE 35–40 as stabilizer, and water as external phase. The evaluation was stability test both phisically and chemically. The result showed that the stability of microemulsion system increased significantly by adding starch hydrolisates DE 35-40 at 2,5%.

INDIAN DRUGS ◽  
2014 ◽  
Vol 51 (06) ◽  
pp. 16-26
Author(s):  
V Suthar ◽  
◽  
M Gokel ◽  
S Butani ◽  
A Solanki

The aim of the present study was to develop self-emulsifying drug delivery system (SEDDS) of aceclofenac for potential improvement in the in vitro dissolution. The Food and Drug Control Agency (FDCA) has put more stress on the quality, safety and efficacy of the dosage form. The use of design of experiments and quality by Design (QbD) in the development of self emulsifying drug delivery system (SEDDS) containing aceclofenac is demonstrated. The optimum formulation contained Labrafil M 1944 CS, Tween 80 and Transcutol P. The systematic approach enabled us in identifying the design space. The results revealed that while devising the control strategies during manufacturing, more attention should be focused on the ratios of oil to surfactant and surfactant to co-surfactant. The drug was released at a faster rate due to a large surface area. The current approach enabled us to develop a dosage form which is economic, patient-friendly and does not require assistance of a doctor or nurse, especially at remote places at odd hours.


2021 ◽  
Vol 12 (7) ◽  
pp. 25-31
Author(s):  
Pooja . ◽  
Pankaj Kumar Sharma ◽  
Viswanath Agrahari

Background: The aim of this study is to develop a liquid self-nano emulsifying drug delivery system for alverine (liquid-SNEDDS).Excipients in the alverine SNEDDS include Ethyl oleate as the oil phase, Tween 80 as a surfactant, and PEG600, Propylene glycol as a cosurfactant.The prepared eleven formulations of alverine SNEDDS were performed for emulsification time, percentage transmittance, particle size, drug release, in vitro dissolution and stability studies.The optimised alverine liquid SNEDDS formulation (D1) was studied for drug-excipient compatibility using infrared spectroscopy, as well as particle size, zeta potential, transmission electron microscopy, and stability. Alverine SNEDDS have a spherical shape with uniform particle distribution, according to their morphology. D1's optimised formulation's drug release percentage (96.6). The stability data revealed no discernible changes in drug content, emulsifying properties, drug release, or appearance. As a result, a potential SNEDDS formulation of alverine with improved solubility, dissolution rate, and bioavailability was developed.


MRS Advances ◽  
2017 ◽  
Vol 2 (19-20) ◽  
pp. 1095-1102 ◽  
Author(s):  
Ashok R. Patel

ABSTRACTSurfactant-free oil-in-water-in-oil (O/W/O) emulsions were successfully prepared through a facile approach using natural ingredients (biopolymers and crystalline fat particles) as stabilizers. Microstructure (PLM, cryo-SEM and confocal microscopy) and diffusive NMR studies revealed that emulsions with ultra-high loading of internal oil droplet phase with high storage stability could be easily prepared in absence of low-molecular weight synthetic surfactants. The internal oil droplets were stabilized by the presence of interfacial layers of gelled biopolymers while the encased water droplets were stabilized by a combination of interfacial crystal accumulation (Pickering stabilization) and network stabilization created by bulk crystallization of fat particles. Small (oscillatory shear rheology) and large (force-displacement measurements) deformation studies were used to gain important insights into the ‘structure-properties’ links. Furthermore, on monitoring the stability of these emulsions in terms of droplet size changes and diffusion of the internal oil phase (over a period of 3 months), they showed exceptional stability with absence of any droplet coalescence and minimal oil diffusion to the external phase. Such complex colloids stabilized by natural ingredients could find important industrial applications in development of novel products in bio-related fields of pharmaceuticals, cosmetics and foods.


2018 ◽  
Vol 1 (3) ◽  
pp. 099-105
Author(s):  
Nita Tirmiara ◽  
Anayanti Arianto ◽  
Hakim Bangun

Vitamin E merupakan salah satu bahan yang dapat melindungi kulit dari berbagai kerusakan kulit yang disebabkan radikal bebas seperti kulit menjadi kering dan berkeriput yang dapat menyebabkan penuaan dini. Bentuk sediaan nanoemulsi gel sangat bermanfaat digunakan sebagai anti-aging kulit karena memiliki kestabilan yang tinggi dengan ukuran partikel yang kecil dan penetrasi dari bahan aktif ke kulit yang lebih mudah. Penelitian ini bertujuan untuk memformulasikan vitamin E dalam sediaan nanoemulsi gel dan mengevaluasi aktivitas anti-aging kulit dari sediaan. Nanoemulsi gel diformulasi dalam 3 formula yaitu F1, F2 dan F3 dengan variasi jumlah vitamin E (1%, 3%, dan 5%), sebagai fase minyak adalah minyak zaitun, Tween 80 sebagai surfaktan dan sorbitol sebagai ko-surfaktan dengan basis gel karbopol 940. Evaluasi stabilitas sediaan nanoemulsi gel meliputi uji sentrifugasi, homogenitas, pengukuran viskositas, pH, pengamatan organoleptis dan pengukuran ukuran partikel dan evaluasi aktivitas anti-aging sediaan nanoemulsi gell dari formula terpilih, Semua formula nanoemulsi gel berwarna kuning transparan, stabil selama penyimpanan 12 minggu pada suhu kamar dan formula F3 menunjukkan ukuran partikel yang paling kecil yaitu 129,90 nm dan 492,93 nm setelah penyimpanan 12 minggu pada suhu kamar dan tetap stabil, sedangkan emulsi gel terjadi pemisahan fase (tidak stabil). Hasil aktivitas anti-aging sediaan nanoemulsi gel lebih baik dibandingkan sediaan emulsi gel dalam hal peningkatan kadar air, pengecilan pori, pengurangan noda dan jumlah keriput pada kulit. Kesimpulan dari penelitian adalah sediaan nanoemulsi gel vitamin E lebih stabil dan memiliki aktivitas anti-aging yang lebih baik dibandingkan dengan sediaan emulsi gel.   Vitamin E is acompound that can protect the skin from various skin damage caused by free radicals such as dry and wrinkled skin which can cause premature aging. Nanoemulsion gel dosage form is very useful to be used as anti-aging skin because it has high stability with small particle size and easier penetration of active ingredients to the skin.This study aimed to formulate vitamin E in nanoemulsion  geldosage form and evaluate its skin anti-aging activity. Nanoemulsion gel was formulated in 3 formulas namely F1, F2 and F3 with various amount of vitamin E (1%, 3% and 5%), as oil phase was olive oil, Tween 80 as surfactant and sorbitol as co-surfactant with carbopol gel base 940.The stability evaluation of nanoemulsion gel dosage form included centrifugation, homogeneity, viscosity, pH, organoleptic observation and particle size measurement and evaluation of anti-aging activity of nanoemulsion gel from selected formulas, all transparent nanoemulsion gel formulas were yellow in colour, stable for 12 weeks storage at temperature rooms and F3 formulas showed the smallest particle size of 129.90 nm and 492.93 nm after 12 weeks of storage at room temperature and remain stable, while the  emulsion gel was separated (unstable).The results showed that anti-aging activity of nanoemulsion gel were better than emulsiongel in terms of increased moisture content, pore reduction, reduction of stains and the amount of wrinkles on the skin. It can be concluded that that the vitamin E nanoemulsion gel is more stable and has better anti-aging activity compared to the emulsion gel.


Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1612
Author(s):  
Nana Adu-Gyamfi ◽  
Dipak K. Sarker

The effect of polymer adsorption on the stability and viable shelf life of 55 μm diameter oil-in-water (O/W) emulsions containing the steroid, betamethasone 21-phosphate was investigated. Two acrylate polymers, Carbopol® 971P and 974P, were added in the role of emulsion stabilizers to a model system, representing a non-ionic low molecular weight surfactant-stabilized emulsion (topically applied medicinal cream). For the purposes of this study the dosage of the viscosifier was maintained below 1% w/v and consequently, the consistency of the emulsion was measured in the diluted form. One of the polymers was responsible for elevated degrees of droplet creaming and coalescence and this was closely linked to its surface tension lowering capacity. This lowering was seen at 62 mN/m compared to the routine values at equivalent concentrations of 68 mN/m and 35 mN/m for the betamethasone drug and non-ionic surfactant-Tween 80, respectively. The same polymer also demonstrated a predisposition to form low-micron and greater sized aggregates of nanoparticles that led to extensive flocculation and the formation of a sedimentary precipitate, formed from an amalgam of the components found in the creamed droplet layer.


Author(s):  
Aybala Usta ◽  
Muhammad Rahman ◽  
Ramazan Asmatulu

Targeted drug delivery has a great importance in cancer treatment and is in interest of many scientists worldwide. Targeted drug delivery renders local treatment of cancerous cells possible without affecting healthy cells. Hydrogels are promising materials to be used in targeted drug delivery systems due to their biocompatible nature and injectable behaviors where they can be used to load drugs. However, considering that not all the drugs are water soluble, entrapment of some drugs into hydrogels is not practical in terms of poor drug solubility and burst drug release because of this. At this point, an oil phase can be considered as a drug carrying agent, and entrapment of this oil phase into hydrogel would make it possible for in-situ injection of dissolved drug in oil phase. Oil in water (O/W)-type nanoemulsions were prepared using black seed oil, which is known to cause apoptosis via p-53 dependent mechanism, water and Triton X-100, Span-80 surfactant combinations. Three different oil percentage and three different surfactant percentage were tested, and stability behaviors of nanoemulsions were investigated and compared. Dynamic light scattering analysis and zeta potential measurements were conducted for determination of particles sizes and surface charges of the nanoemulsions. The most stable nanoemulsion along with having smallest diameter and lowest polydispersity index (PDI) was used for further studies. Results indicated that using both hydrophilic and hydrophobic surfactants together increased the stability of nanoemulsions compared to those using either of them.


2018 ◽  
Vol 12 (02) ◽  
pp. 184
Author(s):  
Sih Yuwanti ◽  
Triana Lindriati ◽  
Renny Dwi Anggraeni

Coffe cherry tea or cascara contained the compound of polyphenol class such as tannin, flavanol, flavan-3-ol, hydrazine acid, antosianin. The compound is very sensitive to oxygen and light because it is easily oxidized. Microemulsions can control both the active ingredient and can protect the active component from undesirable oxidation. Mikoemulsions is composed of water, oil, and food surfactant. Vegetable oil sources that can be applied in microemulsion are coconut oil and palm oil. The addition of cascara extract to microemulsion is expected to provide functional value of microemultion. However, the addition of cascara extract in microemulsion formulation affected the stability of microemulsion system. The objective of the research was to determine the effect of oil and cascara to stability of microemulsion, content of polyphenol and the antioxidant activity of microemulsion. The result showed that the kinds of oil variation given significantly effect for the microemulsion stability. The palm oil resulted the higher absorbance than coconut oil. The concentration of cascara extract had significantly effect for the microemulsion stability. The variation of cascara extract increased the absorbance value and significantly effect to the polyphenol total and antioxidant activity. Keywords: cascara, coconut oil, lecithin, microemultion, palm oil, tween 80


2013 ◽  
Vol 465-466 ◽  
pp. 191-195 ◽  
Author(s):  
Amir Aziz ◽  
Asraf Jusoh ◽  
Rizalman Mamat ◽  
A. Adam Abdullah

Emulsified biodiesel are often stabilized using a combination ratio water, biodiesel and surfactant in achieving stable emulsions. The objective of this study was to evaluate the long-term stability of three phase oil-in-water-in-oil (O/W/O) with respect to the water content and Tween 80. Biodiesel emulsions containing 5 mL, 10 mL and 15 mL water were produce with combination of 95 mL, 90 mL and 85 mL B20 (80 % diesel + 20 % biodiesel) and surfactant by using a mechanical stirrer machine. The experimental results show that increasing concentration of Tween 80 more than 1.5g gave destructive effect on water in oil emulsion stability. In addition, lowering concentration of water content contribute to low polydispersity of emulsion which produced the high emulsification stability.


2021 ◽  
Vol 11 (2) ◽  
pp. 209-223
Author(s):  
Sujata Paul ◽  
Biplajit Das ◽  
Hemanta Kumar Sharma

Biopolymers are naturally found material and most of the materials are made in nature during the life cycles of plants, animals, fungi and bacteria. For any pharmaceutical formulation the two main ingredients are active pharmaceutical ingredient and excipients. As excipients in any kind of dosage form, the biopolymers play a vital function. Biopolymers are pharmacologically inert ingredients formulated along with the active ingredient to increase the volume; they help in the formulating dosage form and also simultaneously can improve the physicochemical parameters of the dosage form and so are widely used in the development of new drug delivery system. The biopolymers which are obtained from animal sources are usually non-toxic, biocompatible, stable and economic; and can control the release pattern of the drug. Natural polymers have more preponderant effects on fast dissolving tablets than synthetic polymers. Now-a-days, because of many problems regarding drug release and adverse effects of synthetic polymers, manufacturers are going towards using natural polymers. In this review article we mainly discussed about types of polymer, different alignment of natural polymer, advantages of natural polymers over synthetic polymers, drawbacks of natural polymers, mechanism of drug release of polymer, different methods of preparation of biopolymers, role of polymer in pharmaceutical industry and drug delivery systems. Keywords: Natural polymers, Chitin, Collagen, Sources, Preparation.


2013 ◽  
Vol 423-426 ◽  
pp. 378-381
Author(s):  
Bing Qing Zhu ◽  
Li Jing Lin ◽  
Ji Hua Li ◽  
Mao Fang Huang ◽  
Kang Yi Zhang

Oil-in-water (O/W) nanoemulsion of Macadamia integrifoblia oil was prepared. The nanoemulsion with the minimum diameter (22.13 nm) would be gained at the ratio of surfactant (Tween-80): cosurfactant (olive oil): oil phase (ethanol)=9:2:1, 86.4% distributing between 10~30 nm, spherical. The Macadamia integrifoblia oil nanoemulsion was still clarity, homogeneous and stable after the stability tests.


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