This document discusses optimization techniques used in pharmaceutical development. It defines optimization as making a formulation or process perfect by finding the best use of resources while considering all influencing factors. It describes independent and dependent variables, different optimization methods like evolutionary operation, simplex method, and statistical experimental designs including factorial, response surface, and Plackett-Burman designs. The advantages of optimization include determining important variables, measuring interactions, and allowing extrapolation to find the best product. Optimization has applications in formulation development, dissolution testing, tablet coating, and capsule preparation.
Optimization technique is a rational approach for selecting the excipients, their concentrations and process conditions for obtaining the best possible product satisfying the quality characteristics.
Optimization is an act, process or methodology of making design, system or decisions as fully perfect, functional or as effective as possible.
Optimization technique is a rational approach for selecting the excipients, their concentrations and process conditions for obtaining the best possible product satisfying the quality characteristics.
Optimization is an act, process or methodology of making design, system or decisions as fully perfect, functional or as effective as possible.
Statistical modeling in pharmaceutical research and developmentPV. Viji
Statistical modeling in pharmaceutical research and development , Statistical Modeling , Descriptive Versus Mechanistic Modeling , Statistical Parameters Estimation , Confidence Regions , Non Linearity at the Optimum , Sensitivity Analysis , Optimal Design , Population Modeling
In this slide contains Quality-by-Design in Pharmaceutical Development.
Presented by: T. MOUSAMI BHAVASAR (Department of pharmaceutics). RIPER, anantapur
Statistical modeling in pharmaceutical research and developmentPV. Viji
Statistical modeling in pharmaceutical research and development , Statistical Modeling , Descriptive Versus Mechanistic Modeling , Statistical Parameters Estimation , Confidence Regions , Non Linearity at the Optimum , Sensitivity Analysis , Optimal Design , Population Modeling
In this slide contains Quality-by-Design in Pharmaceutical Development.
Presented by: T. MOUSAMI BHAVASAR (Department of pharmaceutics). RIPER, anantapur
Design Of Experiments (DOE) Applied To Pharmaceutical and Analytical QbD.SALMA RASHID SHAIKH
According to ICH Q8 Quality should be built into the product.
Design of Experiments (DoE) generate knowledge about a product or process and established a Mathematical relationship of dependent variables and independent variables.
The most common screening designs, such as two-level full factorial, fractionate factorial, and Plackett- Burman designs.
Optimization designs, such as three-level full factorial, central composite designs (CCD), and Box-Behnken designs.
Analysis of variance (ANOVA) used in multiple regression analysis to evaluate regression significance, residual error, and lack-of-fit adjustment.
Determination coefficients (R2, R2 -adj, and R2 -pred) is also evaluated.
Quality By Design:
QbD is “a systematic approach to pharmaceutical development that begins with predefined objectives and emphasizes product and process understanding and process control, based on sound science and quality risk management”
Goals Of Pharmaceutical QbD:
To achieve meaningful product quality specifications
To increase process capability and reduce product variability
To increase pharmaceutical development and manufacturing efficiencies and
To enhance cause-effect analysis and regulatory flexibility.
Design of experiments formulation development exploring the best practices ...Maher Al absi
Now days computer tools used in the formulation and development of pharmaceutical product. Various technique such as design of experiment are implemented for optimization of formulation and processing parameter.
Introduction & Basics of DoE
Terminologies
Key steps in DOE
Softwares used for DOE
Factorial Designs ( Full and Fractional)
Mixture Designs
Response Surface Methodology
Central Composite Design
Box -Behnken Design
Conclusion
References
QbD is “a systematic approach to pharmaceutical development that begins with predefined objectives and emphasizes product and process understanding and process control, based on sound science and quality risk management”
Goals Of Pharmaceutical QbD:
To achieve meaningful product quality specifications
To increase process capability and reduce product variability
To increase pharmaceutical development and manufacturing efficiencies and
To enhance cause-effect analysis and regulatory flexibility
Acoording to ICH Q8 Quality should be built into the product.
Design of Experiments (DoE) generate knowledge about a product or process and established a Mathamatical relationship of dependent variables and independent variables.
The most common screening designs, such as two-level full factorial, fractionate factorial, and Plackett- Burman designs.
optimization designs, such as three-level full factorial, central composite designs (CCD), and Box-Behnken designs.
Analysis of variance (ANOVA) used in multiple regression analysis to evaluate regression significance, residual error, and lack-of-fit adjustment.
determination coefficients (R2, R2 -adj, and R2 -pred) is also evaluated.
Experimental methods are widely used in industrial settings and research activities. In industrial settings, the main goal is to extract the maximum amount of unbiased information regarding the factors affecting production process form few observations, whereas in research, ANOVA techniques are used to reveal the reality. Drawing inferences from the experimental result is an important step in design process of product. Therefore, proper planning of experimentation is the precondition for accurate conclusion drawn from the experimental findings. Design of experiment is powerful statistical tool introduced by R.A. Fisher in England in the early 1920 to study the effect of different parameters affecting the mean and variance of a process performance characteristics
Taguchi's orthogonal arrays are highly fractional orthogonal designs. These designs can be used to estimate main effects using only a few experimental runs.
Consider the L4 array shown in the next Figure. The L4 array is denoted as L4(2^3).
L4 means the array requires 4 runs. 2^3 indicates that the design estimates up to three main effects at 2 levels each. The L4 array can be used to estimate three main effects using four runs provided that the twthree-factoro factor and three factor interactions can be ignored.
Introduction to Design of Experiments by Teck Nam Ang (University of Malaya)Teck Nam Ang
This set of slides explains in a simple manner the purpose of experiment, various strategies of experiment, how to plan and design experiment, and the handling of experimental data.
dxDOE design of experiment for students.ppttenadrementees
Text on statistics which can be used by students and professionals. This covers more topics which are relevant to professionals in the field who need the knowledge"
Statistics is not just a subject confined to textbooks; it's a powerful tool that permeates every aspect of our lives. Whether you're a student embarking on your academic journey or a seasoned professional navigating the complexities of your field, a solid understanding of statistics is indispensable. That's where this comprehensive text comes in.
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Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
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Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
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4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
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Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
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3. INTRODUCTION
The term Optimize is defined as “to make perfect”.
It is used in pharmacy relative to formulation and processing
Involved in formulating drug products in various forms
It is the process of finding the best way of using the existing
resources while taking in to the account of all the factors that
influences decisions in any experiment
21-Apr-15 3OPTIMIZATION TECHNIQUES
4. Final product not only meets the requirements from the bio-
availability but also from the practical mass production criteria
Pharmaceutical scientist- to understand theoretical
formulation.
Target processing parameters – ranges for each excipients &
processing factors
In development projects , one generally experiments by a
series of logical steps, carefully controlling the variables &
changing one at a time, until a satisfactory system is obtained
It is not a screening technique.
Continue….
21-Apr-15 4OPTIMIZATION TECHNIQUES
5. How we can make Formulation perfect ?
What should be characteristics?
What should be the conditions?
Questions Should be in mind
21-Apr-15 5OPTIMIZATION TECHNIQUES
7. Independent variables or primary variables :
Formulations and process variables directly under control of the
formulator.
These includes ingredients
Dependent or secondary variables :
These are the responses of the inprogress material or the
resulting drug delivery system.
It is the result of independent variables .
Optimization Parameters
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8. General optimization
By MRA the relationships are generated from experimental
data , resulting equations are on the basis of optimization.
These equation defines response surface for the system under
investigation
After collection of all the runs and calculated responses
,calculation of regression coefficient is initiated.
Analysis of variance (ANOVA) presents the sum of the squares
used to estimate the factor main effects.
21-Apr-15 8OPTIMIZATION TECHNIQUES
10. TERMS USED
FACTOR: It is an assigned variable such as concentration ,
Temperature etc..,
Quantitative: Numerical factor assigned to it
Ex; Concentration- 1%, 2%,3% etc..
Qualitative: Which are not numerical
Ex; Polymer grade, humidity condition etc
LEVELS: Levels of a factor are the values or designations
assigned to the factor
FACTOR LEVELS
Temperature 300 , 500
Concentration 1%, 2%
E.g.
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12. Continued………
Evolutionary Method:
Constant , Repetitive and Care full planning of
production process to move towards better process.
Simplex Method:
It is simplex algorithm i.e. mathematical process which
is adopted for simplex process & generally represented in
geometrical figers.
LAGRANGAIN METHOD:
It is extension of classical method for simplifying the
formulae & equations .the disadvantage of this method is
that it is applicable to for only two variable problems.
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13. CLASSIC OPTIMIZATION3
• Application to unconstrained problem
• Finding maximum or minimum of a function of independent
variable
Y= f(X) , where
Y- Response
X- Single independent variable
Y= f(X1, X2)
21-Apr-15 13OPTIMIZATION TECHNIQUES
14. Design Of Experiment4
(DOE)
It is a structured, organized method used to determine
relationship between the factor affecting a process and
output of that process.
Reduce experiment time
Reduce experimental cost
21-Apr-15 14OPTIMIZATION TECHNIQUES
15. Phases Of DOE4
Determine the goal
Identifying affecting factors
Selection of Experimental design
Generating a Design Matrix
Conducting an Experiment
Finding the optimum
Results
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16. Types of Experimental Design1-4
Completely Randomized Design
Randomised block Design
Factorial Design
Response surface design
Three level full factorial design
Full Factorial Design
Fractional Factorial Design
Central Composite Design
Box- Behnken Design
21-Apr-15 16OPTIMIZATION TECHNIQUES
17. Factorial Design
For evaluation of multiple factors simultaneously.
23 means 2 is level while 3 is factor
Factorial Design is divided into two types-
- Full Factorial Design
- Fractional factorial design
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18. Full Factorial Design
– Simplest design to create, but extremely inefficient
– Each factor tested at each condition of the factor
– Number of runs (N)
N = yx
Where, y = number of levels,
x = number of factors
E.g.- 3 factors, 2 levels each,
N = 23 = 8 runs
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19. 2X Design
2 = Level
X = Input Factors
x2
Number of
factors
Number of
runs
2 4
3 8
4 16
5 32
x1
x3
21-Apr-15 19OPTIMIZATION TECHNIQUES
20. Fractional factorial design
– Means “less than full”
– Levels combinations are chosen to provide
sufficient information to determine the
factor effect
– More efficient
– Used for more than 5-factors
x1
x2
x3
21-Apr-15 20OPTIMIZATION TECHNIQUES
21. Summary
Design Merits Limitations
Full Factorial Screening of factors Limited runs
Fractional Factorial
Design
For maximum
number of factors
Effects are not
uniquely estimated
Response surface
design
Curves of response
graphically
Become complex if
maximum number
of factors
21-Apr-15 21OPTIMIZATION TECHNIQUES
23. Homogenous fractional
Useful when large number of factors must be screened
Mixed level fractional
Useful when variety of factors need to be evaluated for main
effects and higher level interactions can be assumed to be
negligible.
Box-hunter
Fractional designs with factors of more than two
levels can be specified as homogenous fractional or
mixed level fractional
TYPES OF EXPERIMENTAL DESIGN
21-Apr-15 23OPTIMIZATION TECHNIQUES
24. Plackett-Burman
It is a popular class of screening design.
These designs are very efficient screening designs when only
the main effects are of interest.
These are useful for detecting large main effects economically
,assuming all interactions are negligible when compared with
important main effects
Used to investigate n-1 variables in n experiments proposing
experimental designs for more than seven factors and
especially for n*4 experiments.
TYPES OF EXPERIMENTAL DESIGN
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25. Two most common designs generally used in this response
surface modelling are
Central composite designs
Box-Behnken designs
Box-Wilson central composite Design
This type contains an embedded factorial or fractional
factorial design with centre points that is augemented with the
group of ‘star points’.
These always contains twice as many star points as there are
factors in the design
Continued………
21-Apr-15 25OPTIMIZATION TECHNIQUES
26. The star points represent new extreme value (low & high) for
each factor in the design
To picture central composite design, it must imagined that
there are several factors that can vary between low and high
values.
Central composite designs are of three types
Circumscribed(CCC) designs-Cube points at the corners of
the unit cube ,star points along the axes at or outside the cube
and centre point at origin
Inscribed (CCI) designs-Star points take the value of +1 & -1
and cube points lie in the interior of the cube
Faced(CCI) –star points on the faces of the cube.
Continued………
21-Apr-15 26OPTIMIZATION TECHNIQUES
27. Box-Behnken design
They do not contain embedded factorial or fractional
factorial design.
Box-Behnken designs use just three levels of each
factor.
These designs for three factors with circled point
appearing at the origin and possibly repeated for
several runs.
21-Apr-15 27OPTIMIZATION TECHNIQUES
28. Software's for Optimization
• Design Expert 7.1.3
• SYSTAT Sigma Stat 3.11
• CYTEL East 3.1
• Minitab
• Matrex
• Omega
• Compact
21-Apr-15 28OPTIMIZATION TECHNIQUES
29. Advantages
Helps to determine important variables
Helps to measures interactions.
Allows extrapolations of the data and search for the
best possible product .
Allows plotting of graphs to depict how variables
are related.
21-Apr-15 29OPTIMIZATION TECHNIQUES
31. Conclusion
Immense potential in development of pharmaceutical product and
processes
Less involvement of men, material, machine and money.
Improvement in formulation characteristics.
21-Apr-15 31OPTIMIZATION TECHNIQUES
32. REFERENCE
Modern pharmaceutics- vol 121
Textbook of industrial pharmacy by sobha rani
R.Hiremath.
Pharmaceutical statistics
Pharmaceutical characteristics – Practical and
clinical applications
www.google.com
21-Apr-15 32OPTIMIZATION TECHNIQUES
33. REFERENCES
1) Bolton S, BonC.Pharmacutical statistics practical & clinical
application, 5th ed. New York London ;informa healthcare
publishing ; 2010.p. (223- 39,424-51).
2) Jain NK,Pharmaceutical Product Development, New Delhi ;
CBS Publisher ; 2010. p. 295-340.
3) Schwartz JB,Connere RE,Schnaar RL,In: Banker GS & Rodes
CJ , editor . Modern Pharmaceutics, 4thed. informa healthcare
publishing ; 2010.p. 727-728.
4)Hirmanth RR,Vanjaka KI , Textbook of Industry Pharmacy
;Drug Delivery System and Cosmetics and Herbal Drug
Technology ; 2009.p.148-68.
5) Lewis GH, Mathieu DG, Pharmaceutical experimental design;
Dekker series publishing;Vol-92; 2008. p. 237-240.
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