Betaxanthin is the name given to any of the yellow pigments found only in plants of the family Caryophyllales. They always occur with betacyanins. Betaxanthin is a scientific formulation of two of the most effective immune support compounds ever discovered. Light stimulates the betaxanthin accumulation in Celosia plumosa. Lyophilized betaxanthin powders from yellow inflorescences of Celosia exhibited bright yellow color and high color purity with strong hygroscopicity. The present study provides an update on the betaxanthin (bx) compositions of red and yellow beetroots, yellow-coloured Swiss chard petioles, and yellow-orange cactus pear. The chemical stability and colorant properties of three betaxanthins recently identified from Celosia argentea varieties were evaluated. Twenty-five and thirteen betaxanthins were present in yellow Swiss chard petioles and the cactus pear cultivar 'Gialla', respectively. In darkness betaxanthins synthesis is promoted by kinetin.