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SENSORY EVALUATION TECHNIQUES
Contents
Chapter 1 Introduction to sensory techniques
1.1 Introduction
1.2 Development of sensory testing
1.3 Human subject as instruments
1.4 Conducting a sensory study
References
Chapter 2 sensory attributes and the way we perceive them
2.1 Introduction
2.2 Sensory attributes
2.3 The human senses
2.4 Perception at threshold and above
References
Chapter 3 Controls for the room, products, and panel
3.1 Introduction
3.2 Test controls
3.3 product controls
3.4 Panelist controls
References
Chapter 4 Factors influencing sensory verdicts
4.1 Introduction
4.2 Physiological factors
4.3 Psychological factors
4.4 Poor physical condition
References
Chapter 5 Measuring responses
5.1 Introduction
5.2 Psychophysical theory
5.3 Classification
5.4 Grading
5.5 Ranking
5.6 Scaling
References
Chapter 6 Overall difference tests: Does a sensory difference exits between sample?
6.1 Introduction
6.2 The unified approach to difference and similarity testing
6.3 Triangle test
6.4 Duo-trio test
6.5 Two-out-of-five test
6.6 Same/difference test (or simple difference test)
6.7 “A”-“Not A” test
6.8 Difference-from-control test
6.9 Sequential test
References
Chapter 7 Attribute Difference test: how does attribute X differ between samples?
7.1 Introduction: Paired comparison designs
7.2 Directional difference test: Comparing two sample
7.3 Pairwise ranking test: friedman analysis-comparing several samples in all possible pairs
7.4 Introduction: Multisample difference test- block designs
7.5 Simple ranking test: Friedman analysis-Randomized (complete) block design
7.6 Multisample difference test: rating approach –evaluation by analysis of variance (ANOVA)
7.7 Multisample difference test: BIB ranking test (Balanced incomplete block design)- Friedman analysis
7.8 Multisample difference test: BIB ranking test (balanced incomplete block design)- Evaluation by analysis of variance
References
Chapter 8 Determining threshold
8.1 Introduction
8.2 Definitions
8.3 Applications of threshold determinations
Reference
Chapter 9 Selection and training of Panel members
9.1 Introduction
9.2 Panel development
9.3 Selection and training for difference tests
9.4 Selection and training of panelists for descriptive testing
9.5 Panel performance and motivation
Appendix 9.1 Prescreening questionnaires
Appendix 9.2 Panel leadership advice
Reference
Chapter 10 Descriptive analysis techniques
10.1 Definition
10.2 Field of application
10.3 Components of Description analysis
10.4 Commonly used descriptive test methods
10.5 Application of descriptive analysis panel data
Reference
Chapter 11 The spectrum tm descriptive analysis method
11.1 Designing descriptive procedure
11.2 Myths about the spectrum descriptive analysis method
11.3 Terminology
11.4 Intensity
11.5 Other options
11.6 Modified short-version spectrum descriptive procedures for quality assurance, shelf-life studies, etc
Appendix 11.1 Spectrum terminology for descriptive analysis
Appendix 11.2 Spectrum intensity scales for descriptive analysis
Appendix 11.3 A streamlined approach to spectrum reference
Appendix 11.4 Spectrum descriptive analysis product lexicons
Appendix 11.5 Spectrum descriptive analysis example of full product descriptions
Appendix 11.6 Spectrum description analysis training exercises
Reference
Chapter 12 Affective tests: consumer tests and in-house panel acceptance tests
12.1 Purpose and applications
12.2 The subjects/consumer in affective tests
12.3 Choice of test location
12.4 Affective test methods-fuzzy front end
12.5 Affective methods: qualitative
12.6 Affective methods: quantitative
12.7 Internet research
12.8 Using other sensory methods to uncover insights
Appendix 12.1 Screeners for consumer studies-focus group,CLT,and HUT
Appendix 12.2 Discussion guide-group or one-on-one interviews]
Appendix 12.3 Questionnaires for consumer studies
Appendix 12.4 Protocol design for consumer studies
Appendix 12.5 Additional fuzzy front end references
Reference
Chapter 13 Basic statistical methods
13.1 Introduction
13.2 Summarizing sensory data
13.3 Statistical hypothesis testing
13.4 Thurstonian scaling
13.5 The statistical design of sensory panel studies
13.6 Appendix on probability
Reference
Chapter 14 Advance statistical methods
14.1 Introduction
14.2 Data relationships
14.3 Preference mapping
14.4 The treatment structure of an experimental design
Reference
Chapter 15 Guidelines for choice of technique
15.1 Introduction
Reference
Chapter 16 Guidelines for reporting result
16.1 Introduction
16.2 Summary
16.3 Objective
16.4 Experimental
16.5 Result and discussion
Reference
Chapter 17 Statistical tables
Index