摘要:

not available

ISSN:1923-4287    

DOI:10.1139/cjr40b-047

出版商:NRC Research Press    

年代:1940

数据来源: NRC

摘要:

The amounts of phosphorus and iodine in various British Columbia fish oils have been determined. It has been found that the concentration of phosphorus in the various fish oils is too low to exert much of an antioxidant effect, that samples of fish oil from different localities differ widely in their iodine content, and that fish oils are a relatively high source of iodine.

ISSN:1923-4287    

DOI:10.1139/cjr40b-048

出版商:NRC Research Press    

年代:1940

数据来源: NRC

摘要:

A large number of compounds present in a Turner Valley crude oil have been separated by fractional distillation in a 3-ft. Stedman column. The fractionation was continued up to 153 °C. The compounds have been identified by their physical properties, and the amount of each has been estimated. A comparison with another Turner Valley crude is made.

ISSN:1923-4287    

DOI:10.1139/cjr40b-049

出版商:NRC Research Press    

年代:1940

数据来源: NRC

摘要:

By treating a petrol ether solution of wheat-germ oil with 85% sulphuric acid, centrifuging, and washing the supernatant petrol ether with dilute alkali, carotenoids and other substances that interfere with the iron-dipyridyl method for determining tocopherol are removed. Tocopherol is not affected by the treatment. The tocopherol content of the solution is finally determined by a modification of Emmerie's method.

ISSN:1923-4287    

DOI:10.1139/cjr40b-050

出版商:NRC Research Press    

年代:1940

数据来源: NRC

摘要:

The decomposition of gaseous glyoxal tetra-acetate to acetic anhydride and glyoxal is homogeneous and unimolecular. Both the activation energy and the temperature independent factor of the first order rate constant are substantially larger than in the case of the diacetate esters. The decomposition velocity is given by the equationk = 1.8 × 1012e−39200/RT.

ISSN:1923-4287    

DOI:10.1139/cjr40b-051

出版商:NRC Research Press    

年代:1940

数据来源: NRC

摘要:

The alkaloid aurotensine is shown to have the same constitution as scoulerine. It is not the optical antipode nor thedl-form of the latter, but an addition compound of thel- and thedl-forms. Scoulerine diethyl ether and the mono-ethyl ethers of corypalmine and of isocorypalmine have been obtained in crystalline condition, thus facilitating the unambiguous characterization of the alkaloids.

ISSN:1923-4287    

DOI:10.1139/cjr40b-052

出版商:NRC Research Press    

年代:1940

数据来源: NRC