Slide 1

Ong, Law - Hygrothermal Properties of FVFs

Chapter 2

Hygrothermal Properties of Various Foods, Vegetables and

Fruits

Sze Pheng Ong and Chung Lim Law

Chemical and Environmental Engineering Department, The University of Nottingham, Malaysia

Campus

Contents

2.1. INTRODUCTION ....................................................................................................................... 33

2.2. HYGROTHERMAL EFFECTS ON CHEMICAL AND BIOCHEMICAL PROPERTIES .. 33

2.2.1. Food Chemistry .............................................................................................................................. 33

2.2.2. Browning Reactions ...................................................................................................................... 35

2.2.3. Proteins .............................................................................................................................................. 37

2.2.4. Vitamins ............................................................................................................................................. 38

2.2.5. Microbial Growth and Enzymes Activity .............................................................................. 40

2.3. HYGROTHERMAL EFFECTS ON PHYSICAL PROPERTIES ........................................... 43

2.3.1. Effective Moisture Diffusivity ................................................................................................... 43

2.3.2. Thermal Properties ....................................................................................................................... 47

2.3.3. Shrinkage and Volume Change ................................................................................................. 50

2.4. CLOSING REMARKS ................................................................................................................ 52

Ong, S.P. and Law, C.L. Hygrothermal Properties of Various Foods, Vegetables and Fruits, in Drying
of Foods, Vegetables and Fruits - Volume 1, Ed. Jangam, S.V., Law, C.L. and Mujumdar, A.S., 2010 ,
ISBN - 978 - 981 - 08 - 6759 - 1, Published in Singapore, pp. 31- 58.