scholarly journals Substantiation of the composition of a semi-solid dosage form with a probiotic component for use in dermatology

2021 ◽  
pp. 54-63
Author(s):  
Alina Soloviova ◽  
Halyna Kukhtenko ◽  
Olha Kaliuzhnaia
Keyword(s):  
Sodium Alginate ◽  
Dosage Form ◽  
Colloidal Stability ◽  
Gelling Agent ◽  
Optimal Basis ◽  
Microbiological Methods ◽  
Rational Combination ◽  
Membrane Type ◽  
Semi Solid ◽  
Physical And Chemical

One of the important issues in the pharmaceutical development of a semisolid preparation for dermal use is the scientific and experimental justification for choosing the base-carrier of active substances. The aim of this study was to experimentally substantiate the choice of rational combination of excipients in the development of a semisolid dosage form with a probiotic component for use in dermatology. Materials and methods. Hydrophilic gelling agents were used as excipients in the study: Sepiplus 400, Aristoflex AVC, Carbopol 934, hydroxyethylcellulose HEC, sodium alginate. Physical and chemical, pharmaco-technological and microbiological methods were used to select the optimal basis. Colloidal stability was determined using a laboratory centrifuge at a speed of 6000 rpm for 5 min, an electronic thermometer and a water bath laboratory. Thermostability was determined in the thermostat at (40±2) °C for 24 hours. Investigation of the rheological properties of the samples was performed using a Rheolab QC (Anton Paar, Austria) rheoviscometer using a system of coaxial cylinders C-CC27/SS. The kinetics of water absorption of the samples were studied by dialysis through a semipermeable Cuprophan membrane, Type 150 pm at a temperature of (34±2) °C. The number of viable lactobacilli cells was determined by surface seeding on Petri dishes with dense MRS medium. Research results. The results of the study of the number of viable lactobacilli cells showed that the lowest number of viable cells was in sample based on HEC. Tests for thermostability and colloidal stability showed that for sample No. 5 based on sodium alginate, stratification was observed in the experiment, which indicates its instability. These samples were excluded. Samples on Sepiplus 400 and Aristoflex AVC on a set of rheological features have advantages both consumer and technological; and sample on t Aristoflex AVC has the best indicators of osmotic activity and the viability of cells in the dynamics for this study. Conclusions. As a result of physical and chemical (organoleptic, colloidal and thermostability), pharmaco-technological (osmotic and structural and mechanical properties) and microbiological studies (number of viable lactobacilli cells) studies it was found that further work should be carried out with a sample based on gelling agent Aristoflex AVC, which has the most optimal performance in this development for a semisolid dosage form with a probiotic component for use in dermatology

FORMULATION OPTIMIZATION AND EVALUATION OF TINIDAZOLE IN-SITU

2021 ◽  
Vol 10 (2) ◽  
pp. 20-26
Author(s):  
Yaduwanshi Payal ◽  
Goswami Anindya ◽  
Malviya Neelesh
Keyword(s):  
Factorial Design ◽  
Sodium Alginate ◽  
Dosage Form ◽  
Sodium Citrate ◽  
The Body ◽  
Gelling Agent ◽  
Formulation Optimization ◽  
Full Factorial ◽  
32 Full Factorial Design

The study deals with formulation optimization and evaluation of tinidazole gel by using sodium alginate as gelling agent calcium chloride, sodium citrate were used as cross linking agent. The polymeric solution of drug is in solution form before it administered to the body. But after administration when it comes in contact with acidic pH it’s converted into gel form and the drug tinidazole released from the dosage form constantly and slowly. The formulation is effective for the treatment of gastric ulcer because of Helicobacter pylori. 32 full factorial design were used for the optimization of the formulation 12 trial batches were prepared and 9 factorial design batches in which 2 factor 3 level factorial design were used for the optimization. The concentration of sodium alginate, were taken in 3 level low, medium, high and the prepared formulation were evaluated.

scholarly journals Metal-Ceramic Beads Based on Niobium and Alumina Produced by Alginate Gelation

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5483
Author(s):  
Enrico Storti ◽  
Marc Neumann ◽  
Tilo Zienert ◽  
Jana Hubálková ◽  
Christos Georgios Aneziris
Keyword(s):  
Sodium Alginate ◽  
Inert Atmosphere ◽  
Gelling Agent ◽  
Consolidation Process ◽  
Pure Alumina ◽  
Pure Niobium ◽  
Composite Beads ◽  
Calcium Hexaluminate ◽  
Metal Ceramic ◽  
Ductile Behavior

Full metal-ceramic composite beads containing different amounts of niobium and alumina, particularly 100 vol% alumina, 100 vol% niobium, and 95/5 vol% niobium/alumina, were produced by the alginate gelation process. The suspension for bead fabrication contained sodium alginate as gelling agent and was added dropwise into a calcium chloride solution to trigger the consolidation process. After debinding in air, sintering of the composite beads was performed under inert atmosphere. Samples in green and sintered state were analyzed by digital light microscopy and scanning electron microscopy equipped with energy dispersive X-ray spectroscopy. Investigations by mercury intrusion porosimetry revealed that pure alumina beads featured smaller pores compared to composite beads, although the open porosities were comparable. The fracture strength was evaluated on single beads. Contrary to the pure alumina, the composite beads showed a clear plastic deformation. Pure niobium beads showed a ductile behavior with very large deformations. XRD analyses revealed the presence of calcium hexaluminate and beta-alumina as minor phases in the alumina beads, while the composite ones contained about 25 wt% of impurities. The impurities comprised NbO arising from the oxidation, and β-Nb2C, from the reaction with the residual sodium alginate.

scholarly journals DESIGN, OPTIMIZATION & IN-VITRO EVALUATION OF SODIUM ALGINATE BASED IN-SITU GEL OF RANITIDINE HYDROCHLORIDE IN ULCER TREATMENT

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Sanket Kumar ◽  
Mahesh Singh ◽  
Babulal Patel
Keyword(s):  
Peptic Ulcer ◽  
Drug Release ◽  
Sodium Alginate ◽  
Gelling Agent ◽  
Cross Linking ◽  
Physical Interaction ◽  
In Situ Gel ◽  
Ranitidine Hydrochloride ◽  
Ulcer Treatment

Peptic ulcer, it is the most common type of stomach disease, according to the American Gastroenterology Association. “We know that ulcers occur because there has been a disruption in the balance of factors that injure the digestive tract and those factors that protect it from injury,” The present investigation deal with the formulation, optimization and evaluation of sodium alginate based in situ gel of ranitidine hydrochloride (R-HCl) in ulcer treatment. The in-situ formulation are homogenous liquid when administration orally and become gel at the contact site. The evaluation of the formulation is dependent upon accurate results obtained by analytical method used during the study. Accurate results require the use of standard and a calibration procedure. Hence, standard plots of Ranitidine hydrochloride were prepared in (0.1N HCL, pH 1.2) solutions. Two, sodium alginate and calcium carbonate used as a polymer and cross-linking agent respectively in the formulation of in-situ gel. From the IR studies it may be concluded that the drug and carriers used undergo physical interaction there is no chemical change, and thus the gelling agent, cross-linking agent and other excipient is suitable for formulation of in-situ gel of ranitidine hydrochloride. Indicate that the formulation, DKF9 which was prepared by the Sodium alginate (2 gm) with Ranitidine Hydrochloride showed minimum drug release (sustained drug release) after 8 hrs. It can be concluded that the In-situ gel was beneficial for delivering the drug which needs sustained release to achieve the slow action. Keywords: In-situ gel, Peptic Ulcer, Ranitidine Hydrochloride (R-HCl), Sodium alginate.

scholarly journals Embedded 3D Printing of Novel Bespoke Soft Dosage Form Concept for Pediatrics

Pharmaceutics ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 630 ◽  
Author(s):  
Katarzyna Rycerz ◽  
Krzysztof Adam Stepien ◽  
Marta Czapiewska ◽  
Basel T. Arafat ◽  
Rober Habashy ◽  
...  
Keyword(s):  
Dosage Form ◽  
Drug Loading ◽  
Three Dimensional ◽  
Dosage Forms ◽  
Dose Titration ◽  
Step Method ◽  
Needle Size ◽  
Model Drug ◽  
Semi Solid ◽  
The Impact

Embedded three-dimensional printing (e-3DP) is an emerging method for additive manufacturing where semi-solid materials are extruded within a solidifying liquid matrix. Here, we present the first example of employing e-3DP in the pharmaceutical field and demonstrate the fabrication of bespoke chewable dosage forms with dual drug loading for potential use in pediatrics. LegoTM-like chewable bricks made of edible soft material (gelatin-based matrix) were produced by directly extruding novel printing patterns of model drug ink (embedded phase) into a liquid gelatin-based matrix (embedding phase) at an elevated temperature (70 °C) to then solidify at room temperature. Dose titration of the two model drugs (paracetamol and ibuprofen) was possible by using specially designed printing patterns of the embedded phase to produce varying doses. A linearity [R2 = 0.9804 (paracetamol) and 0.9976 (ibuprofen)] was achieved between percentage of completion of printing patterns and achieved doses using a multi-step method. The impact of embedded phase rheological behavior, the printing speed and the needle size of the embedded phase were examined. Owning to their appearance, modular nature, ease of personalizing dose and geometry, and tailoring and potential inclusion of various materials, this new dosage form concept holds a substantial promise for novel dosage forms in pediatrics.

scholarly journals DESIGN, DEVELOPMENT, AND EVALUATION OF AN ION-ACTIVATED OPHTHALMIC IN SITU GEL OF MOXIFLOXACIN HYDROCHLORIDE

2019 ◽  
pp. 94-103
Author(s):  
GIRISH KONDALKAR ◽  
ASISH DEV
Keyword(s):  
Drug Release ◽  
Sodium Alginate ◽  
Statistical Models ◽  
Bacterial Infections ◽  
Gelling Agent ◽  
Design Development ◽  
Sustained Drug Release ◽  
Exchange Method ◽  
In Situ Gelling

Objective: The objective of this study was to develop an in situ ophthalmic gel of an anti-infective drug, moxifloxacin (MOX) hydrochloride (HCL), for sustained ocular delivery for the treatment of bacterial infections of the eye. Method: In the present work the in situ gelling systems were prepared by ion exchange method with the help of various concentrations of gelling agent gelrite (0.08 g, 0.1 g and 0.12 g) and sodium alginate (0.6 g, 0.8 g and 1 g) as viscosity enhancer were added in the formulation; 9 formulations were prepared according to 32 factorial designs and evaluated. The responses were analyzed for the analysis of variance using Design-Expert version 10 software. Statistical models were generated for each response parameter. Results: Optimized formulation batch F7 (0.12% gelrite and 0.6% sodium alginate) was liquid before addition of simulated tear fluid (STF) and underwent rapid gelation on addition of STF and had given 84.05% cumulative drug release; the formulation was found to be clear, having good in situ gelling capacity, good antibacterial efficacy, having drug content 99.75%; optimized formulation was sterile and showed sustained drug release over 8 h period as compared to marketed eye drop. Conclusions: From the above results, we can concluded that 32 full factorial design and statistical models can be successfully used to optimize the formulations, and it was concluded that the trial batch F7 (0.12% gelrite and 0.6% sodium alginate) is the best formula (percentage cumulative drug release over 84.05%) and it is possible to formulate in situ ophthalmic gels of MOX HCL using gelrite in combination with sodium alginate for the treatment of various bacterial infections of the eyes.

The influence of Surelease and sodium alginate on the in-vitro release of tamsulosin hydrochloride in pellet dosage form

2005 ◽  
Vol 57 (6) ◽  
pp. 735-742 ◽  
Author(s):  
Min-Soo Kim ◽  
Seoung Wook Jun ◽  
Sibeum Lee ◽  
Tae Wan Lee ◽  
Jeong-Sook Park ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Dosage Form ◽  
In Vitro Release ◽  
Vitro Release

Rheology of Blast Furnace Slags with Defined Concentrations of Titanium Oxides

2014 ◽  
Vol 611-612 ◽  
pp. 1645-1656
Author(s):  
Piotr Migas ◽  
Marta Korolczuk-Hejnak
Keyword(s):  
Blast Furnace ◽  
Chemical Properties ◽  
Viscosity Coefficient ◽  
Reduction Reaction ◽  
Reducing Conditions ◽  
Rheological Character ◽  
Semi Solid ◽  
Solid Slag ◽  
Physical And Chemical ◽  
Titanium Compounds

800x600 The applying of burden materials containing titanium compounds in the blast furnace process and the processes of forming titanium carbides and nitrides has a directly impact on the physical and chemical properties of slag and pig iron. Thereby affecting the course of the process, its efficiency and economy. It is known that the dynamic viscosity coefficient of slag – with an increased titanium compounds content in the reducing conditions of the blast furnace - may rapidly change. The products of the reduction reaction, precipitation and separation of titanium compounds are responsible for the thickening effect of the slag and the problems of permeability of blast furnace, causing anomalies in the functioning of the unit. The presence of solid components (particles) in the melts determines the rheological character of the entire system.Authors have performed a rheological study of synthetic furnace slag concentration of TiO2 in the range of 6% to 30%. The measurements were performed at temperatures in the range between 1310-1490oC. The obtained results made it possible to analyze the rheological characteristics of liquid and semi-solid slag systems and produce flow curves. Identifying the rheological character of semi-solid slag systems provides opportunities for the development of a mathematical model of liquid phase flow in a dripping zone of the blast furnace, allowing for example to indentify the unstable parts of a metallurgical aggregate. Normal 0 21 false false false PL X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:Standardowy; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";}

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