The papaya lipase stored in the crude papain from spay-dried latex of Carica papaya has been discovered as a versatile enantioselectivity biocatalyst to obtain chiral acids by using hydrolytic resolution of their racemic esters. With adopting the enzyme screening, purification, medium engineering and substrate engineering tactics can effectively improve the ability of lipase- catalyzed hydrolysis of (R,S)-naproxen ester. By employing partially purified lipase or an appropriate organo-soluble base (ex: Triethylamine) addition in water-saturated isooctane, both have superior...