during the 4 h ( 12 ) co2-exposure period , which followed the 2 h ( 14 ) co2-incorporation time , the specific and total radioactivity of the alpha-and beta-carotene pools decrease with a concomitant increase in the alpha-ionone- ( lutein ) and beta-ionone xanthophylls ( violaxanthin , zeaxanthin , antheraxanthin ) .
C0043328
lutein
C0949636
xanthophylls