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263. The passage of carotenoids from food to milk in the cow. The fate of lycopene

Published online by Cambridge University Press:  01 June 2009

A. E. Gillam  and
S. K. Kon
A. E. Gillam
Affiliation:
From the National Institute for Research in Dairying, University of Reading
S. K. Kon
Affiliation:
From the Department of Chemistry, University of Manchester
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Extract

The question whether the tomato pigment, lycopene, an isomer of carotene, can pass from food into milk in the cow has been submitted to direct test by feeding three different cows with tomato purée and examining the resulting milk fats separately for lycopene. No evidence of the presence of lycopene has been detected in the unsaponifiable matter of the butter fat when this was subjected to careful chromatographic adsorption and it is concluded that, although the cow normally absorbs α- and β-carotene and certain oxidation products of these substances from its food it completely excludes the isomeric and very similar lycopene which has been found in the faeces in considerable quantity after tomato feeding. The mechanism of this selective absorption of one isomer only is quite obscure.

2. Adsorption of the carotenoids of several colostrum fats gave no indication of the presence of lycopene but the adsorption columns contained two small zones above that of β-carotene due to traces of pigments having absorption maxima at 452 and 425 mμ. (petroleum ether b.p. 70–80°). These may be due to oxidation products of β-carotene.

Type
Original Articles
Information
Journal of Dairy Research , Volume 11 , Issue 3 , September 1940 , pp. 266 - 273
Copyright
Copyright © Proprietors of Journal of Dairy Research 1940

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References

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