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Evolution trend of chlorophylls and carotenoids contents in baby mustard lateral buds during frozen storage at −20°C. (A) chlorophyll a; (B) chlorophyll b; (C) neoxanthin; (D) lutein; (E) violaxanthin; (F) β-carotene; (G) total chlorophylls; H: total carotenoids. Unblanched represents no blanching before freezing; Blanched represents blanching before freezing. Values not sharing the same letter are significantly different at p < 0.05.
