Dynamic research on beta-carotene content of carrots during postharvest storage

There were four phases in the whole stage. At the first phase, with temperature dropping, fleshy roots entered dormant period, and beta-Carotene content decreased slightly; at the second stage, with lower stable temperature, fleshy roots remained in the dormant period and beta-Carotene content changed very slightly; at the third stage when temperature went up again, the dormancy was broken and beta-Carotene content went up more than doubled, at the fourth stage, with temperature going up slowly, the tender shoots grew continuously and beta-Carotene content began to go down.