Ionene: A Thermal Degradation Product of β-Carotene

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Science  30 Aug 1963:
Vol. 141, Issue 3583, pp. 808
DOI: 10.1126/science.141.3583.808


Ionene has been identified as a thermal degradation product of β-carotene. The 5-percent yield of ionene represents the largest amount of any compound thus far identified from the degradation. Experimental evidence has been obtained indicating the presence of ionene in a marine sediment ment subjected to the same temperature used to degrade β-carotene.