1 Authentication of orange juice.- 1.1 Introduction.- 1.1.1 Incidence of adulteration.- 1.1.2 The market for frozen concentrated orange juice.- 1.1.3 Factors affecting adulteration.- 1.1.4 Combating fake juice.- 1.2 Analysis.- 1.2.1 Minerals.- 1.2.2 Organic acids.- 1.2.3 Sugars.- 1.2.4 Isotopic methods.- 1.2.5 Photometric methods.- 1.2.6 Amino acids.- 1.2.7 Methods of limited application.- 1.2.8 Future possibilities.- 1.3 Statistics.- 1.3.1 Introduction...