An Inhibitor of the Antimony Trichloride Test for Vitamin A in Cod Liver Oil

Nature ◽  
1933 ◽  
Vol 131 (3306) ◽  
pp. 364-364 ◽  
Author(s):  
A. EMMERIE
Keyword(s):  
Vitamin A ◽  
Antimony Trichloride ◽  
Cod Liver Oil

Nutrition

1937 ◽  
Vol 10 (4) ◽  
pp. 259-282
Keyword(s):  
Vitamin A ◽  
Normal Level ◽  
Laying Hen ◽  
Antimony Trichloride ◽  
Cod Liver Oil ◽  
Biochemical Journal ◽  
Hen’S Egg

The Effect of the Administration of Large Amounts of Vitamin A on the Vitamin A Content of the Hen's Egg. E. M. Cruickshank and T. Moore. Biochemical Journal, Vol. 31, 1937, p. 179.The administration of cod liver oil to a laying hen at the rate of 10 per cent. of the diet, which was otherwise low in vitamin ‘A’ and carotene, caused the vitamin ‘A’ content of the eggs, as determined by the antimony trichloride method, to be doubled. The vitamin ‘A’ content of the egg resumed its normal level soon after the withdrawal of the cod liver oil from the diet.

VITAMIN A REQUIREMENTS OF GROWING CHICKS: I. PRELIMINARY STUDIES WITH "REFERENCE" COD LIVER OIL

1936 ◽  
Vol 14d (3) ◽  
pp. 21-24 ◽  
Author(s):  
Jacob Biely ◽  
William Chalmers
Keyword(s):  
Growth Factor ◽  
Vitamin A ◽  
Oral Administration ◽  
Vitamin A Deficiency ◽  
Normal Rate ◽  
Cod Liver Oil ◽  
Basal Ration

In experiments conducted to determine the requirements of chicks for vitamin A up to eight weeks of age, vitamin A was supplied, in addition to the basal ration, by oral administration of Reference Cod Liver Oil at the rate of 25, 50, 75 and 100 International units per day. It was found that chicks receiving 75 units of vitamin A per day grew at a normal rate and did not show any signs of vitamin A deficiency. The chicks that received the basal ration only, showed symptoms of avitaminosis A at three weeks of age, while the group receiving 25 international units per day at eight weeks clearly had not received a sufficient supply of the growth factor.

Comparative Value of Three Sources of Vitamins A and D for Fattening Pigs

1954 ◽  
Vol 1954 ◽  
pp. 45-47
Author(s):  
R. S. Barber ◽  
R. Braude ◽  
M. E. Coates ◽  
G. F. Harrison ◽  
K. G. Mitchell ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin A ◽  
Intramuscular Injection ◽  
Fish Meal ◽  
List Type ◽  
Cod Liver Oil ◽  
Commercial Preparation ◽  
Single Intramuscular Injection ◽  
Fattening Pigs

The efficacy of three sources of vitamins A and D supplements was tested in an experiment with fattening pigs involving the following four treatments :(1) Control—basal meal.(2) As control, but at one week of age the pigs had been given a single intramuscular injection of a commercial preparation, supplying 500,000 i.u. of vitamin A and 100,000 i.u. of vitamin D3.(3) Basal meal + 1 % cod-liver oil (containing 500 i.u./g. of vitamin A and 68 i.u./g. of vitamin 3), supplying 2,270 i.u. of vitamin A and 309 i.u. of vitamin D3 per lb. of diet.(4) Basal meal + synthetic vitamins A and D concentrate (containing 50,000 i.u./g. of vitamin A and 5,000 i.u./g. of vitamin D3), added to supply 2,250 i.u. of vitamin A and 300 i.u. of vitamin D3 per lb. of diet.The basal meal which was the standard fattening diet used at Shinfield consisted of: fine miller’s offal 50, barley meal 30, flaked maize 10, white fish meal 10, all parts by weight. It should be noted that the diet contained a precursor of vitamin A, and it was calculated that this would provide about one-third of the recommended allowance of vitamin A for fattening pigs.

STUDIES ON ANTIOXIDANT ACTIVITY: I. ESTIMATION OF ANTIOXIDANT ACTIVITY IN STABILIZING VITAMIN A IN OILS

1941 ◽  
Vol 19b (1) ◽  
pp. 17-23 ◽  
Author(s):  
W. E. Parker ◽  
A. C. Neish ◽  
W. D. McFarlane
Keyword(s):  
Antioxidant Activity ◽  
Vitamin A ◽  
Wheat Germ ◽  
Chloroform Solution ◽  
Ultra Violet ◽  
Antimony Trichloride ◽  
Direct Application ◽  
Wheat Germ Oil ◽  
Destructive Action ◽  
Antioxidant Potency

The efficiency of wheat-germ oil in stabilizing vitamin A against the destructive action of ultra-violet radiations was investigated. A rapid and convenient method of estimating antioxidant potency is described which is based on ultraviolet irradiation of mixtures of halibut liver oil and antioxidant in chloroform solution and estimation of vitamin A by the direct application of the antimony trichloride reaction employing photoelectric colorimetry.

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