74 



INDEX 



m-3-Decenoic acid, Cont. 



as growth promoter for Lacto- 

 bacillus casei, 58-61 

 as growth promoter for Lacto- 

 bacillus delbriieckii, 58-61 

 Dibasic acids, separation by chro- 

 matography, 44, 45 

 Dihydrosterculic acid, see DL-di- 

 9,10-Methyleneoctadecanoic 

 acid 

 Dihydroxyoctadecanoic acids, X- 

 ray diffraction patterns of, 36 

 cf5-5-Dodecenoic acid, as growth 

 promoter for Lactobacillus 

 arabinosus, 58-61 

 as growth promoter for Lacto- 

 bacillus casei, 58-61 

 as growth promoter for Lacto- 

 bacillus delbrueckii, 58-61 



Elaidic acid, biotin-like growth 

 promoting activity of, 21 

 biotin-sparing action of, 28 



Ergosterol, methionine as source 

 for carbon atom 28 in, 55 



Formate-Ci4, incorporation into 

 lactobacillic acid, 49-53 



incorporation into Lactobacillus 

 arabinosus cells, 52 



incorporation into olefinic acids, 

 53 



Gas-liquid chromatography of bac- 

 terial fatty acid methyl esters, 

 33 



d5-7,8-Hexadecenoic acid, labeling 

 pattern in biosynthetic, 64 



cij-7,8-Hexadecenoic acid, Cont. 

 occurrence in Clostridium bu- 

 tyric um, 38 



c«-9,10-Hexadecenoic acid, label- 

 ing pattern in biosynthetic, 64 



Hydroxylation of unsaturated fatty 

 acids, 33 



Iodoform, formation from cyclo- 

 propane fatty acids, 46 

 from labeled lactobacillic acid, 

 53 

 lodomethyl zinc iodide, in cyclo- 

 propane ring synthesis, 18 

 reaction with olefins, 18 

 reaction with oleic acid, 18 

 reaction with palmitoleic acid, 

 18 



Labeled precursors, incorporation 

 into Lactobacillus arabinosus 

 fatty acids, 49-54 

 Lactobacillic acid, ability to sub- 

 stitute for d5-vaccenic acid in 

 bacterial metabolism, 40 



amide, 15 



biosynthesis of, 40, 48, 49 



biotin-like growth promoting ac- 

 tivity of, 21 



composition of, 4 



cyclopropane ring in, 6, 7 



density of, 23 



dibasic acids from degradation 

 of, 46 



electron density map of, 26 



hydrogen bonding in, 27 



hydrogenolysis of, 6, 7 



identity with phytomonic acid, 5 



infrared spectrum of, 4, 7, 8, 14 



