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J GROSS

Publications and source records attributed to J GROSS.

At least 37 records · Page 2Linked to original sources
PubMed1963

PROVITAMIN A2 FROM LUTEIN.

Alfalfa lipids were treated with p-toluenesulfonic acid in benzene under reflux; after saponification, chromatography of the unsaponifiable portion yielded a carotenoid having a single absorption maximum at 460 mmicro in ethanol and hexane. Its properties correspond to those of the dehydration product of lutein, 3'-hydroxy-3,4-dehydro-ss-carotene, for which the name "anhydrolutein" is proposed. Vitamin A depleted chicks convert this pigment to vitamin A(2), as shown by the high ratio of absorbancies at 693 and 620 mmicro in a mixture of CHCI(3) and SbCl(3). and the absorption maximum at 350 mmicro in hexane exhibited by the liver lipids. The possible role of this pigment in the biogenesis of vitamin A(2) is discussed.

Animals↗
PubMed1963

Experimental lathyrism in the chick embryo. The distribution of beta-aminopropionitrile.

1. C(14)-labeled beta-aminopropionitrile distributed throughout the egg contents within 10 minutes postinjection. By ion exchange chromatography and electrophoretic analysis three major components of the extractable dialyzable radioactive material could be demonstrated, representing at least 80 per cent of the total. The acidic and basic components were identified as beta-aminopropionitrile and cyanoacetic acid, while the fraction isoelectric at pH 5.3, consisting of two components, remained unidentified. 2. Less than 1 molecule of betaAPN per 100 molecules of protein was present in the highly purified extractable lathyritic bone collagen indicating that binding of the lathyrogen is not a factor in collagen extractability. 3. The proximity of betaAPN to collagen in bone is not essential to its extractability. 4. The effect of incubation temperature of the embryo on collagen extractability suggests the involvement of a metabolic process in this phenomenon.

Aminopropionitrile↗
PubMed1961

Collagen.

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Collagen↗