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Sensory Evaluation. A Practical Handbook

  • ID: 2182095
  • Book
  • 208 Pages
  • John Wiley and Sons Ltd
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Sensory testing in the food, cosmetic and household product industries is integral to the development and manufacture of products that consumers want to buy. A greater understanding of the benefits of sensory science has lead to rapid development and growth in the profession over recent years, and the demand for more technical staff increases as the number and size of sensory departments continue to expand.

This book is a practical guide to sensory evaluation methods and techniques, explaining the suitability of different testing methods for different situations and offering step–by–step instructions on how to perform the various types of test. Covering a broad range of product applications including food, beverages, personal care and household products, the book is spiral bound to allow for easy reference in the testing environment.

The objectives of the book are

  • to provide a practical guide and laboratory manual on how to carry out sensory evaluation techniques
  • to reach sensory practitioners, as well as sensory scientists, by using a simple, easy–to–read, easy–to–use format
  • to be affordable to a wide audience who would not ordinarily be able to afford to purchase standard sensory text books, including students, technicians and practitioners in developing countries
  • to cover the IFST PFSG accreditation scheme at foundation and intermediate levels

The book is suitable as a training manual, reference text, teaching aid and course book. Key audiences include sensory practitioners, junior sensory staff, sensory students and sensory trainers.

Also available from Wiley–Blackwell
Sensory and Consumer Research in Food Product Design and Development
H.R. Moskowitz, J.H. Beckley and A.V.A Resurreccion
ISBN 9780813816326

Flavor Perception
Edited by A.J. Taylor
ISBN 9781405116275

Note: Product cover images may vary from those shown
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Preface vii

Author biographies ix

Acknowledgements xi

1 Introduction 1

1.1 What is sensory evaluation? 1

1.2 What is the role of sensory evaluation? 2

1.3 What drives successful sensory testing? 3

2 Sensory perception 4

2.1 The human senses 4

2.2 Factors affecting sensory measurements 6

3 Planning your sensory project 11

3.1 Setting objectives 11

3.2 Product type 11

3.3 Budget 12

3.4 Timings 12

3.5 Selecting the test method 12

3.6 Setting action standards 13

3.7 Experimental design 14

3.8 Data analysis 19

4 Requirements for sensory testing 30

4.1 Professional conduct in sensory testing: health, safety, ethical and legal considerations 30

4.2 Good working and laboratory practices 37

4.3 Resources needed for sensory testing 41

4.4 Samples 49

4.5 Assessors 54

4.6 Data capture 63

5 Sensory test methods 66

5.1 Selecting the test 66

5.2 Discrimination tests 66

5.3 Descriptive analysis tests 96

5.4 Affective/consumer tests 118

5.5 Linking consumer, sensory and product data 136

6 Completing the project 138

6.1 Reporting 138

6.2 Documentation and data storage 140

6.3 Dos and don ts 141

7 Appendices 142

Appendix 1: Examples of Latin Square and Williams Latin Square designs for selected number of samples 142

Appendix 2: IFST PFSG professional code of conduct for sensory professionals 143

Appendix 3: Critical values table for triangle test 147

Appendix 4: Critical values table for duo–trio test and paired comparison test for difference (one tailed) 149

Appendix 5: ANOVA explained 151

Appendix 6: Critical values table for chi–squared 156

Appendix 7: Critical values table for paired comparison and paired difference test (two tailed) 157

Appendix 8: Critical values table for Friedman test 159

Appendix 9: Types of scales 160

Appendix 10: Case study: modified quantitative descriptive analysis of chocolate texture 163

Appendix 11: R index explained 174

8 Glossary 178

9 References 185

Index 189

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Sarah E. Kemp
Tracey Hollowood
Joanne Hort
Note: Product cover images may vary from those shown