Stability of Carotene Added to Solid Carriers

Abstract

The addition, in pellet form, of carotene to certain dry carriers without protective measures results in very rapid loss. With protective measures (such as favorable storage conditions, the addition of certain oils and of very small amounts of antioxidants, and a reasonably low but significant concentration of carotene), the retention of carotene is greatly improved and suggests that pelleted mixtures containing extracted carotene may prove feasible as a supplementary feed.

Oxycarotenoids in Poultry Feeds

“…Inert gas storage has aided the retention of carotenes (407), as have treatment with an antioxidant, (83,270,340,458,511,579,600,802,890), and addition of animal fats (82,580). Inert gas storage has aided the retention of carotenes (407), as have treatment with an antioxidant, (83,270,340,458,511,579,600,802,890), and addition of animal fats (82,580).…”

Loss of Carotenoids in Stored Commercial and High‐Carotenoid Yellow Corn, Zea mays L.1

“…The over-all average xanthophyll losses durrng storage were much greater for the 2 high-carotenoid st~ains than for the commercial strain (53% vs. 36%). BICkoff and Williams (5) reported that increasing amounts of ca~o tenes added to a dry feed carrier resulted in a progressrve decrease in the stability of carotenes. In the present study, the greater percentage loss of xa_nthophylls in highcarotenoid strains vhan in commeroal corn may be explained on the basis of their initial pig_ment contents.…”

Determination of Carotene

“…Aphanicin may possibly be considered to be composed of two molecules of aphanin (3-keto-p-carotene) joined by an oxygen bridge. Echinenone may be identical with aphanin or myxoxanthin (14). Table I presents the carotenoids known at the time of writing to be vitamin A active.…”