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The growth characteristics and β-carotene content of the control strain Y.L-1 and the Hxk overexpression strain Y.L-2 in the YPD medium for 144 h shake-flask fermentation. (A) The growth characteristics analysis of Y.L-1 and Y.L-2 in the YPD medium for 144 h. (B) The β-carotene content of Y.L-1 and Y.L-2 in the YPD medium for 144 h. Error bars represent standard deviations (n = 3).
