The name is absent



Riboflavine             187

brings almost immediate improvement. It has also been sug-
gested that lack of it may predispose to chilblains. The skin-
protector for chicks has turned out to be pantothenic acid
and is probably universally needed by all living organisms.
Various other factors supposed to be necessary for normal
growth in birds or rats, or to prevent anemia, cataracts, giz-
zard lesions, failure of lactation, and even gray hair, have
been described, but the distinctness of many of these is doubt-
ful, and evidence of their need by human beings has yet to be
obtained. For the present, at least, we need not concern our-
selves about them as necessary parts of our daily diet.

RIBOFLAVINE

As noted above, when the principal growth-promoting
member of the vitamin G family was finally unmasked, it
proved to be a yellow dye of the flavine group which had
long been known as a component of milk, egg white, meat,
and many plant substances. Various names had been given
to it according to its source, e.g., lactoflavine, ovoflavine,
etc., but since these are apparently all alike, the name ribo-
flavine, which has only chemical significance, has been ap-
proved for it. It is not easily destroyed either by heat or
alkali. It forms combinations with phosphoric acid and
proteins, and in the combined form acts as an enzyme which
has an important function in the body in connection with
oxidations. An interesting interrelation of vitamins appears
from the fact that this “yellow enzyme” requires the as-
sistance of a compound in which nicotinic acid, another of
the vitamin B family, is an ingredient.

Young rats are unable to grow if deprived of riboflavine,
and older animals rapidly lose weight and become un-
healthy. Recently the failure of bone marrow cells to form



More intriguing information

1. Der Einfluß der Direktdemokratie auf die Sozialpolitik
2. The name is absent
3. Co-ordinating European sectoral policies against the background of European Spatial Development
4. Announcement effects of convertible bond loans versus warrant-bond loans: An empirical analysis for the Dutch market
5. Natural hazard mitigation in Southern California
6. Modeling industrial location decisions in U.S. counties
7. The name is absent
8. The name is absent
9. Trade Liberalization, Firm Performance and Labour Market Outcomes in the Developing World: What Can We Learn from Micro-LevelData?
10. A Computational Model of Children's Semantic Memory
11. ESTIMATION OF EFFICIENT REGRESSION MODELS FOR APPLIED AGRICULTURAL ECONOMICS RESEARCH
12. The name is absent
13. Estimating the Economic Value of Specific Characteristics Associated with Angus Bulls Sold at Auction
14. A Regional Core, Adjacent, Periphery Model for National Economic Geography Analysis
15. The name is absent
16. Indirect Effects of Pesticide Regulation and the Food Quality Protection Act
17. Target Acquisition in Multiscale Electronic Worlds
18. The name is absent
19. Cultural Diversity and Human Rights: a propos of a minority educational reform
20. The name is absent