Using a sensitive photo electric spectrophotometer, carotene derived from carrots and dissolved in an oil, has been found to exhibit an absorption band in the region 325-330 Mμ. An absorption band in this region has been shown by Morton & Heilbron to be characteristic of vitamin A in fats derived from animal sources. The appearance of this band in carotene from a vegetable source, establishes an even closer relationship between these two growth-promoting factors
<p>Absorption spectra between 300 and 500 nm of various dilutions in H<sub>2</sub>O of (<b>A</b>) vi...
rations of radio-active materials, so it seems desirable to take the opportunity of studying their a...
The spectroscopic properties of nine all-trans-carotenoids, xanthophylls and model polyenes were stu...
Using a sensitive photo electric spectrophotometer, carotene derived from carrots and dissolved in a...
A continuation of our previous work on the ultra-violet absorption spectra of substances showing vit...
This is a continuation of the work previously reported by Woodrow and Cunningham (Phys. Rev., vol. 3...
For the purpose to confirm whether carotene is converted into vitamin A mainly in the intestine, flu...
The absorption of a [alpha] and B [beta] carotene crystals suspended in water have been measured, an...
The carotenoid pigments are very conspicuous in nature, owing to their yellow to red hues, and occur...
NUMEROUS investigators have shown that both carotene and vitamin A are unstable. Holmes, Corbet, and...
1. The extractability of carotene and vitamin A from human plasma by shaking with ether was found ...
IN 1919, Steenbock (1) called attention to the association between certain yellow pigments and vitam...
The spectrum of mercury is excited by hydrogen canal rays. The velocity of the canal rays is regulat...
The fluorescence was produced by the radiation from a Cooper Hewitt quartz mercury vapor lamp. A Cor...
Carotenoids are an extensive group of natural pigments employed by a majority of organisms on earth....
<p>Absorption spectra between 300 and 500 nm of various dilutions in H<sub>2</sub>O of (<b>A</b>) vi...
rations of radio-active materials, so it seems desirable to take the opportunity of studying their a...
The spectroscopic properties of nine all-trans-carotenoids, xanthophylls and model polyenes were stu...
Using a sensitive photo electric spectrophotometer, carotene derived from carrots and dissolved in a...
A continuation of our previous work on the ultra-violet absorption spectra of substances showing vit...
This is a continuation of the work previously reported by Woodrow and Cunningham (Phys. Rev., vol. 3...
For the purpose to confirm whether carotene is converted into vitamin A mainly in the intestine, flu...
The absorption of a [alpha] and B [beta] carotene crystals suspended in water have been measured, an...
The carotenoid pigments are very conspicuous in nature, owing to their yellow to red hues, and occur...
NUMEROUS investigators have shown that both carotene and vitamin A are unstable. Holmes, Corbet, and...
1. The extractability of carotene and vitamin A from human plasma by shaking with ether was found ...
IN 1919, Steenbock (1) called attention to the association between certain yellow pigments and vitam...
The spectrum of mercury is excited by hydrogen canal rays. The velocity of the canal rays is regulat...
The fluorescence was produced by the radiation from a Cooper Hewitt quartz mercury vapor lamp. A Cor...
Carotenoids are an extensive group of natural pigments employed by a majority of organisms on earth....
<p>Absorption spectra between 300 and 500 nm of various dilutions in H<sub>2</sub>O of (<b>A</b>) vi...
rations of radio-active materials, so it seems desirable to take the opportunity of studying their a...
The spectroscopic properties of nine all-trans-carotenoids, xanthophylls and model polyenes were stu...
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