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The lipase-catalyzed esterification of sorbitan with oleic acid in a solvent-free system to form sorbitan oleate (commercial name Span80) was studied as a feasible approach aimed at meeting the demand for sugar alcohol-based surfactants. Screened results obtained from enzymatic synthesis of sorbitan oleate indicated that Novozym 435 had its highest catalytic activity in a solvent-free system. The...
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