SUBJECT INDEX 



383 



Talcum 26 

 Taraxanthin 320 



- Constitution 322 



- History and occurrence 320 



- Preparation 321 



- Properties 322, 358 



- Stereoisomers 323 

 Tetraketo-y6-carotene (astacene) 234 



1 : I : 20 : 20-Tetramethyldihydrobixi- 



nol 270 

 4 : 8 : 13 : 17-Tetramethyleicosane 267 

 4 : 8 : 13 : 17-Tetramethyleicosane- 1-20 



-diol (i : 20-dihydroxybixane) 266 

 2:6:11: 15-Tetramethylhexadecane 



279 

 2:6:11 : 15-Tetramethylhexadecane- 



I :i6-dicarboxylic acid diamide 266 



2 : 6 : II : 15-Tetramethylhexadecanedi- 



I : i6-diol 278 



3 : 7 : 12 : i6-Tetramethyloctadeca- 



i:i8-diol 266 

 3 : 7 : 12 : i6-Tetramethyloctane-i :i8- 



diol 166 

 Thermal degradation 48 

 Titanium trichloride 264 

 Toluene 118 

 w-Toluic acid 258 

 Tomato pigment 120 

 Tomato preserves 116 

 Torularhodin 35, 330 



- Constitution 330 



- History and occurrence 330 



- Preparation 330 



- Properties 331 

 Torularhodin methyl ester 332 

 Torulin 329 

 Trichloroacetic acid 7 

 Trichloroethylene 27 

 Tricyclocrocetin 278 

 TroUichrome 335 

 Trollixanthin 335 



U 



Ultraviolet light absorption 53 



Violaxanthin 34, 190, 193 



- Constitution 194 



- Derivatives 195 



- History 193 



- Occurrence 193 



- Preparation 194 



- Properties 351 

 Violaxanthin dibenzoate 196 



Violaxanthin di-^j-nitrobenzoate 196 



Violerythrin 333 



Visual process 16 



Visual purple 16, 17 



Vitamin A 12 



Vitamin Aj 17 



Vitamin Ag 17 



Vitamin A acid 13 



Vitamin A activity 13, 49 



Vitamin Aj-aldehyde 17 



Vitamin Ag-aldehyde 17 



Vitamin A methyl ester 13 



W 



Water 27 



Water solubility of carotenoids 5 



Xanthophyll 33, 197 



- Constitution 201 



- Derivatives 204 



- History 197 



- Occurrence 198 



- Preparation 200 



- Properties 202, 352 

 Xanthophyll diacetate 204 

 Xanthophyll dibenzoate 205 

 Xanthophyll dibutyrate 204 

 Xanthophyll di-«-caprate 204 

 Xanthophyll dicaprylate 204 

 Xanthophyll diiodide 204 

 Xanthophyll dioenanthate 204 

 Xanthophyll di-p-nitrobenzoate 

 Xanthophyll dipalmitate 205 

 Xanthophyll dipropionate 204 

 Xanthophyll distearate 205 

 Xanthophyll di-w-valerate 204 

 Xanthophyll epoxide 33, 206 

 Xanthophyll halogenides 204 

 Xanthophyll monomethyl ether 205 

 m- Xylene 49, 118 



Zeaxanthin 33, 180 



- Constitution 183 



- Derivatives 185 



- Formation 182 



- History 180 



- Occurrence 180 



- Preparation 182 



- Properties 184, 350 



- Stereoisomers 188 

 Zeaxanthin diacetate 185 

 Zeaxanthin dibutyrate 186 

 Zeaxanthin dicaprate 186 



