d- and l-lactic acid production from fresh sweet potato through simultaneous saccharification and fermentation

•A method for l- and d-lactic acid production from fresh sweet potato.•The method produced l-lactic acid at 122.91–198.32gL−1 with yields over 90% (w/w).•The method produced d-lactic acid at 122.49–186.40gL−1 with yields of 90.11–84.92% (w/w).•This study would benefit the tuber and root-based lactic...

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