Dairy Fats and Related Products

Whilst milk fat has always been appreciated for its flavour, the market had suffered from concerns over cardiovascular diseases associated with the consumption of animal fats. However, recent clinical studies have indicated benefits, particularly in relation to conjugated linoleic acids (CLA), in the prevention of certain diseases. The range of spreads has also increased, including the addition of probiotic organisms and/or plant extracts to reduce serum cholesterol levels.
The primary aim of this publication is to detail the state–of–the–art manufacturing methods for:CreamButterYellow fat spreads, both pure milk fat based and mixtures with other fatsAnhydrous milk fat and its derivatives
Coverage of the manufacturing technologies is complemented by examinations of the relevant nutrition issues and analytical methods. The authors, who are all specialists in their fields in respect to these products, have been chosen from around the world. It is hoped that the book will provide a valuable reference work for dairy scientists and technologists within the dairy industry and those with similar processing requirements, as well as researchers and students, thus becoming an important component of the SDT’s Technical Series.
The Editor
Dr Adnan Y. Tamime is a Consultant in Dairy Science and Technology, Ayr, UK. He is the Series Editor of the SDT’s Technical Book Series.
For information regarding the SDT, please contact Maurice Walton, Executive Director, Society of Dairy Technology, P.O. Box 12, Appleby in Westmorland CA16 6YJ, UK. email: execdirector@sdt.org
Also available from Wiley–Blackwell
Milk Processing and Quality Management
Edited by A.Y. Tamime
ISBN 978 1 4051 4530 5
Cleaning–in–Place
Edited by A.Y. Tamime
ISBN 978 1 4051 5503 8
Advanced Dairy Science and Technology
Edited by T. Britz and R. Robinson
ISBN 978 1 4051 3618 1
Internat ional Journal of Dairy Technology
Published quarterly
Print ISSN: 1364 727X
Online ISSN: 1471 0307

Spis treści:
Preface to Technical Series
Preface
Dedication
Contributors
1 Milk Lipids – Composition, Origin and Properties (T. HUPPERTZ, A.L. KELLY AND P.F. FOX).
1.1 Introduction
1.2 Composition of milk lipids
1.2.1 Fatty acids
1.2.2 Triacylglycerols
1.2.3 Mono– and diacylglycerols and free fatty acids
1.2.4 Phospholipids
1.2.5 Minor constituents
1.3 Origin of milk lipids
1.3.1 Biosynthesis and origin of the fatty acids in milk lipids
1.3.2 De novo synthesis of fatty acids
1.3.3 Uptake of fatty acids from the blood
1.3.4 Desaturation of fatty acids
1.3.5 Synthesis of triacylglycerols
1.4 Factors affecting the composition of milk lipids
1.5 Intracellular origin of milk lipid globules and the milk lipid globule membrane
1.5.1 Secretion of milk lipid globules
1.5.2 The milk lipid globule membrane
1.5.3 Lipids of the milk lipid globule membrane
1.5.4 Proteins of the milk lipid globule membrane
1.5.5 Enzymes of the milk lipid globule membrane
1.6 Physicochemical stability of milk lipid globules
1.6.1 Size distribution of milk lipid globules
1.6.2 Colloidal stability of milk lipid globules
1.6.3 Creaming of milk lipid globules
1.6.4 Coalescence of milk lipid globules
1.6.5 Homogenisation and properties of homogenised milk lipid globules
1.6.6 Temperature–induced changes in milk lipid globules
1.7 Crystallisation and melting of milk triacylglycerols
1.8 Conclusions
References
2 Milk Fat Nutrition (P.W. PARODI).
2.1 Introduction
2.2 Conjugated linoleic acid
2.2.1 Origin of rumenic acid
2.2.2 CLA nutrition
2.2.3 CLA as an anticancer agent
2.2.4 Rumenic acid and mammary tumour prevention
2.2.5 CLA, RA and colon tumour prevention
2.2.6 Rumenic acid and the prev ention of atherosclerosis
2.2.7 Trans fatty acids and coronary heart disease
2.2.8 Rumenic acid and immunomodulation
2.2.9 Rumenic acid and type 2 diabetes mellitus
2.2.10 Rumenic acid as a growth factor
2.3 Sphingolipids
2.3.1 Sphingolipids in colon cancer prevention
2.3.2 Sphingomyelin and cholesterol absorption
2.3.3 Sphingomyelin and the immune system
2.3.4 Sphingolipids and intestinal diseases
2.4 Butyric acid
2.5 Branched chain fatty acids
2.6 Fat–soluble components
2.6.1 The vitamins
2.6.2 Cholesterol
2.6.3 Other interesting components
2.7 Further nutritional benefits
2.8 Perceived nutritional negatives for milk
2.8.1 Milk fat and coronary artery disease
2.8.2 Saturated fatty acids
2.8.3 Fat intake and cancer
2.8.4 Dietary fat and obesity
2.9 Conclusions
References
3 Separation and Standardisation of the Fat Content (M. GUNSING, H.C. VAN DER HORST, D. ALLERSMA AND P. DE JONG).
3.1 Introduction
3.2 Overview of the history of milk fat separation
3.3 Physical models
3.4 Standardisation of the fat content of milk
3.5 Conclusion
References
4 Cream and Related Products (M.A. SMIDDY, A.L. KELLY AND T. HUPPERTZ).
4.1 Introduction
4.2 Cream processing
4.2.1 Separation
4.2.2 Standardisation
4.2.3 Heat treatment
4.2.4 Homogenisation
4.2.5 Quality of cream
4.3 Whipping cream
4.3.1 Production of whipping cream
4.3.2 Whipping of the cream
4.3.3 Characterisation of whipped cream
4.3.4 Influence of processing conditions on whipping characteristics of cream
4.3.5 Compositional factors affecting whipped cream characteristics
4.3.6 Influence of stabilisers and emulsifiers on whipping characteristics of cream
4.4 Aerosol–whipped cream
4.4.1 Production of aerosol–whipped cream
4.4.2 Properties of aerosol–whipped cream
4.5 Cream liqueur
4.5.1 Composition of cream liqueur
4.5.2 Processing of c ream liqueur
4.5.3 Shelf–life of cream liqueur
4.6 Cultured, fermented or sour cream
4.6.1 Background
4.6.2 Production of cultured, fermented or sour cream
4.7 Coffee cream
4.7.1 Processing of coffee cream
4.7.2 Properties of coffee cream
4.8 Other cream products
4.8.1 Frozen cream
4.8.2 Dried cream
4.9 Conclusion
References
5 Butter (R.A. WILBEY).
5.1 Introduction
5.2 Cream preparation
5.2.1 Sweet cream
5.2.2 Ripened/fermented/cultured cream
5.2.3 Modifications of cream ageing
5.3 Batch churning
5.4 Continuous butter manufacture
5.4.1 Cream feed to buttermaker
5.4.2 Conversion to butter–grains
5.4.3 Working
5.4.4 Salting
5.5 Alternative processes for cultured butters
5.6 Alternative technologies for continuous buttermaking
5.6.1 Low–fat route
5.6.2 Shearing high–fat cream
5.7 Recombined butter
5.8 Reduced–fat butters
5.9 Spreadable butters
5.10 Packaging
5.11 Flavoured butters
5.12 Quality issues
5.13 Concluding comments
References
6 Anhydrous Milk Fat Manufacture and Fractionation (D. ILLINGWORTH, G.R. PATIL AND A.Y. TAMIME).
6.1 Introduction
6.2 Definitions and properties
6.3 Production statistics
6.4 Anhydrous milk fat/butteroil manufacture processes
6.4.1 Principles
6.4.2 Manufacturing options
6.4.3 Quality of milk fat during and post manufacture
6.5 Milk fat fraction
6.5.1 Process options
6.5.2 Fraction properties
6.6 Ghee
6.6.1 Introduction
6.6.2 Methods of manufacture
6.6.3 Packaging
6.6.4 Chemical composition
6.6.5 Flavour
6.6.6 Physicochemical properties
6.6.7 Texture
6.6.8 Thermal oxidation
6.6.9 Shelf–life of the product
6.6.10 Nutritional aspects
6.6.11 Ghee as a medicine
6.7 Conclusion
6.8 Acknowledgements
References
7 Production of Yellow Fats and Spreads (B.K. MORTENSEN).
7.1 Introduction
7.2 Legislati