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
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
Chapter 3 Controls for the room, products, and panel
3.1 Introduction
3.2 Test controls
3.3 product controls
3.4 Panelist controls
Chapter 4 Factors influencing sensory verdicts
4.1 Introduction
4.2 Physiological factors
4.3 Psychological factors
4.4 Poor physical condition
Chapter 5 Measuring responses
5.1 Introduction
5.2 Psychophysical theory
5.3 Classification
5.4 Grading
5.5 Ranking
5.6 Scaling
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
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
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
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
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
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
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
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
Chapter 15 Guidelines for choice of technique
15.1 Introduction
Chapter 16 Guidelines for reporting result
16.1 Introduction
16.2 Summary
16.3 Objective
16.4 Experimental
16.5 Result and discussion
Chapter 17 Statistical tables
Index
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