RIBOFLAVINE 



lucerne and a protein supplement, the amount of riboflavine in the 

 rumen exceeded that in the diet, but when the maize was omitted the 

 rumen contained less than the diet. 



References to Section 12 



1. L. Laszt and L. D. Torre, Z. Vitaminforsch., 1943, 13, 77. 



2. B. Sure and Z. W. Ford, /. Nutrition, 1943, 26, 659. 



3. H. G. Obermeyer, E. Wurtz and G. A. Emerson, Proc. Soc. Exp. 



Biol. Med., 1945, 59, 300. 



4. G. J. Mannering, D. Orsini and C. A. Elvehjem, /. Nutrition, 1944. 



28, 141. 



5. B. Sure, ibid., 1945, 29, 283. 



6. B. Sure, Arch. Biochem., 1947, 12, 389. 



7. B. S. Schweigert, L. J. Teply, I. T. Greenhut and C. A. Elvehjem, 



Amer. J. Physiol., 1945, 144, 74. 



8. B. S. Schweigert, J. M. Mclntire, L. M. Henderson and C, A. 



Elvehjem, Arch. Biochem., 1945, 6, 403. 



9. M. E. Coates, R. M. Henry, P. M. Kon, S. K. Kon, E. H. Mawson, 



J. E. Stanier and S. Y. Thompson, Nature, 1946, 157, 262. 



10. V, A. Najjar, G. A. Johns, G. C. Medairy, G. Fleischmann and 



L. E. Holt, /. Amer. Med. Assoc, 1944, 126, 357. 



11. M. L. Hathaway and D. E. Lobb, /. Nutrition, 1946, 32, 9. 



12. C. W. Denko, W. E. Grundy, J. W. Porter, G. H. Berryman, T. E. 



Friedemann and J. B. Youmans, Arch. Biochem., 1946, 10, 33. 



13. C. W. Denko, W. E. Grundy N. C. Wheeler, C. R. Henderson, 



G. H. Berryman, T. E. Friedemann and J. B. Youmans, ihid., 

 1946, 11, 109. 

 13a. S. E. Snyderman, K. C. Ketron, H. B. Burch, O. H. Lowry, 

 O. A. Bessey, L. P. Guy and L. E. Holt, /. Nutrition, 1949, 39, 

 219. 



14. R. C. Thompson, Univ. Texas Publ., 1942, No. 4237, p. 87 ; P. R. 



Burkholder and I. McVeigh, Proc. Nat. Acad. Sci., 1942, 28, 285. 



15. L. W. McElroy'and H. Goss, /. Nutrition, 1940, 20, 527. 



16. C. H. Hunt, C. H. Kirk, E. W. Burroughs, R. M. Bethke, A. F. 



Schalk and P. Gerlaugh, ihid., 1941, 21, 85 ; C. H. Hunt, E. W. 

 Burroughs, R. M. Bethke, A. F. Schalk and P. Gerlaugh, ibid., 

 i943» 25, 207. 



13. ANIMAL AND HUMAN REQUIREMENTS OF 

 RIBOFLAVINE 



Attempts to assess human and animal requirements of riboflavine 

 are complicated by the phenomenon of intestinal synthesis and, in 

 ruminants, synthesis in the rumen. Human requirements can be 

 calculated with a fair degree of certainty, however, as intestinal 

 synthesis does not appear to be a usual source of riboflavine in man. 



186 



