CONTENTS. 



PREFACE 



SECTION I.— FATS, OILS, AND WAXES 



Fats .... 

 Occurrence 

 Constitution 

 Chemical properties 

 Saponification 

 Extraction 

 Characterization 

 Quantitative estimation 

 Quantitative methods for characterization 



Acid number . 



Saponification value. 



Unsaponifiable residue 



Iodine value . 



Reichert Meissl value 



Acetyl value . 

 Spontaneous changes 



Rancidity 



Drying and resinification 

 Industrial uses 



Hardening of oils 

 Physiological significance 



Microchemical reactions 

 Waxes 



Properties 

 Sterols 



Cholesterol 



Reactions 

 Phytosterols 



Distinction between cholesterol and phytosterol 

 Estimation of sterol content of an unsaponifiable residue 

 Lipins .... 



Phospholipins 



Lecithin . 



Kephalin 

 Cerebrosides or galactolipins 



Occurrence 



Physiological significance 



PAGE 

 V 



I 

 I 



4 



9 



lo 



12 



14 



i6 



20 

 21 

 21 

 22 



23 



26 

 27 

 28 

 28 

 29 



31 

 34 

 34 

 44 

 44 

 45 

 46 

 46 



47 

 48 



49 

 50 

 51 

 53 

 53 

 55 

 56 

 56 

 57 



SECTION II.— ALDEHYDES AND ALCOHOLS 



Formaldehyde 

 Alcohols 



Occurrence 



60 



65 

 69 

 69 



IX 



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