The Nutritive Value of Fractions of Butterfat Prepared by Cold Crystallization

Geyer, Robert P.; Geyer, Beverly Ransone; Derse, P. H.; Nath, H.; Barki, V. H.; Elvehjem, C. A.; Hart, E. B.

doi:10.3168/jds.s0022-0302(47)92353-9

Cited by 11 publications

(3 citation statements)

References 8 publications

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“…The discovery by Bertram (1928) of vaccenic (trans-octadec-l1-enoic) acid in ox-, sheep-and butter-fat has been confirmed by other investigators (Grossfeld & Simmer, 1930;Geyer, Nath, Barki, Elvehjem & Hart, 1947), who also found traces of this acid in lard. In addition, Gupta, Hilditch, Paul & Shrivastava (1950) showed that trans-octadec-10-enoic acid was also present in the depot and milk fats of oxen and sheep.…”

mentioning

confidence: 78%

The trans-unsaturated acid contents of fats of ruminants and non-ruminants

Hartman¹,

Shorland²,

McDonald³

1955

Biochemical Journal

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mentioning

confidence: 78%

The trans-unsaturated acid contents of fats of ruminants and non-ruminants

Hartman¹,

Shorland²,

McDonald³

1955

Biochemical Journal

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“…The Wisconsin school, believing it to be superior, has confirmed its original findings (cf. (l)) in several new publications (429,430,431,432,433,434,435,436). Further Support is given by (437,438,439,440,441,442,443,444,445,446,447,448); papers (438,439,440,441,442,443,444) underline the special value of fat produced by cows on pasture, and paper (447) the marked variations in response of rats in different laboratories to supposedly similar diets.…”

Section: (Iii) Fatmentioning

confidence: 92%

“…They have lately offered the simple and clear-cut explanation that the superiority is due to the vaccenic acid present in butter (440,441,442,443), and have shown that the addition to rape-seed oil of vaccenic acid, chemically prepared from tung oil, markedly increased its growth-promoting properties (443). Further support to their view is given by Brouwer & Jonker-Scheffener(474), who found significantly more vaccenic acid in pasture butter than in that of cows fed indoors, and by the analytical data of Geyer, Nath, Barki, Elvehjem & Hart (475), who state that butterfat contains more vaccenic acid than other animal fats studied by them, but detected none in various vegetable oils. Axelrod, Hofmann & Daubert (476) found biotin-like activity in a vaccenic acid fraction prepared from beef tallow.…”

Section: (Iii) Fatmentioning

confidence: 92%

Section D. Nutritive value of milk and milk products

Kon

Henry

1949

Journal of Dairy Research

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III. Nutritive value as estimated in laboratory andVitamin B, (pyridosrin) after parturition contained 14, 25, 36 and 29/xg./g. fat (0-9,1-1, 1-3 and 1-3 mg./l.) of carotene and 48, 91, 67 and 165 jig./g. fat (2-8, 3-7, 3-0 and 6-9 mg./l.) of vitamin A, and the effects of the supplements were still evident in later samples of colostrum. It is of interest that the addition of carotene did not increase the vitamin A, and that the administration of vitamm A did not depress the .carotene, in colostrum.Unpublished work at Shinfield(77) gave very similar results, but the high vitamin A ration depressed the carotene content of the colostrum. Corroborative evidence comes from Russia (78), and from the U.S. Bureau of Dairy Industry (79). The colostrum of two cows which had been on pasture had a higher vitamin A potency than that of two cows on a ration low in vitamin A (79).Several authors have studied the vitamin A and carotene content of colostrum of different breeds under normal and experimental conditions. Valuable information comes from the Ohio State University herd for which two sets of values are available, one for groups of five to nine Ayrshire, Guernsey, Friesian (Holstein) and Jersey cows which calved while on winter feed (80) and another for similar cows of the same breeds, with the addition of Brown Swiss, which calved a year or two later on pasture (81). The values are not strictly comparable as they are given for separate days in the first study and for separate milkings in the second. On both occasions the carotene concentration in the first sample was lowest for Friesian cows (1-97 and 2-89 mg./l.) and highest for Guernseys (4-97 and 8-64 mg./L). For vitamin A, Jerseys were bottom of the four breeds on both occasions (2-18 and 1-44 mg./L), but Ayrshires led in the first study with 2-94 mg./l. and Guernseys in the second with 2-79 mg./l. The values for the Brown Swiss were 4-97 mg./l. for carotene and 3-48 mg./l. for vitamin A. It is noteworthy that the colostrum of the cows which calved in winter was relatively poorer in carotene and richer in vitamin A than that of the cows on pasture. The differences were much less marked in later samples. An interesting feature of these findings was that, on both occasions, the concentration of carotene in the Jersey colostrum was at first much less than for Guernseys, and even less than for Ayrshires, but the concentration declined more slowly, and the Jerseys were leading, for example, from the fourth to the seventh milking in the second experiment. The results indicate a marked individual variation in the concentration of vitamin A and carotene in colostrum, a fact emphasized by the findings of most other authors. In the first 3 days after calving some 50 mg. of vitamin A and 60 mg. of carotene were secreted in colostrum (80).Hansen, Phillips & Smith (82) followed the vitamin A and carotene content of the colostrum, and its change with the progress of lactation and method of milking, of eighteen Friesian cows which were uniformly fed indoors throughout their first ...

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Die Grundstoffe der Nahrung

Glatzel¹

1962

Ernährung

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The Nutritive Value of Fractions of Butterfat Prepared by Cold Crystallization

Cited by 11 publications

References 8 publications

The trans-unsaturated acid contents of fats of ruminants and non-ruminants

The trans-unsaturated acid contents of fats of ruminants and non-ruminants

Section D. Nutritive value of milk and milk products

Die Grundstoffe der Nahrung

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