Determination of total vitamin A content of dairy butters - Spectrophotometric method

[1] *ASS OFF AGR CHEM, 1935, OFF TENT METH AN, P412

[2] BARTHEN C. L., 1937, Journal of the American Pharmaceutical Association, V26, P515

[3] Baumann CA, 1933, J BIOL CHEM, V101, P547

[4] DEMAREST BEAUMONT, 1939, ZEITSCHR VITAMINFORSCH, V9, P20

[5] FRAPS GS, 1938, TEXASAGR EXPT STA B, V560

[6] Variations in the quality of butter, particularly in relation to the vitamin A, carotene and xanthophyll content as influenced by feeding artificially dried grass to stall-fed cattle. [J]. BIOCHEMICAL JOURNAL, 1933, 27 : 878 - 888

[7] A modified spectrophotometric method for the assay of carotene and vitamin A in butter. [J]. BIOCHEMICAL JOURNAL, 1934, 28 : 79 - 83

[8] The relative vitamin a potency of carotene fed in butter fat and cottonseed oil [J]. JOURNAL OF NUTRITION, 1936, 11 (02) : 103 - 110

[9] SHREWSBURY CL, 1933, J BIOL CHEM, V101, P707

[10] WILKIE J. B., 1937, Journal of the Association of Official Agricultural Chemists, V20, P208

[1] *ASS OFF AGR CHEM, 1935, OFF TENT METH AN, P412

[2] BARTHEN C. L., 1937, Journal of the American Pharmaceutical Association, V26, P515

[3] Baumann CA, 1933, J BIOL CHEM, V101, P547

[4] DEMAREST BEAUMONT, 1939, ZEITSCHR VITAMINFORSCH, V9, P20

[5] FRAPS GS, 1938, TEXASAGR EXPT STA B, V560

[6] Variations in the quality of butter, particularly in relation to the vitamin A, carotene and xanthophyll content as influenced by feeding artificially dried grass to stall-fed cattle. [J]. BIOCHEMICAL JOURNAL, 1933, 27 : 878 - 888

[7] A modified spectrophotometric method for the assay of carotene and vitamin A in butter. [J]. BIOCHEMICAL JOURNAL, 1934, 28 : 79 - 83

[8] The relative vitamin a potency of carotene fed in butter fat and cottonseed oil [J]. JOURNAL OF NUTRITION, 1936, 11 (02) : 103 - 110

[9] SHREWSBURY CL, 1933, J BIOL CHEM, V101, P707

[10] WILKIE J. B., 1937, Journal of the Association of Official Agricultural Chemists, V20, P208