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Title of Journal: Appl Biochem Biotechnol

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Abbravation: Applied Biochemistry and Biotechnology

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Humana Press Inc

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DOI

10.1002/ange.201301468

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1559-0291

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Enzymatic Hydrolysis of Polylactic Acid Fiber

Authors: So Hee Lee Wha Soon Song
Publish Date: 2010/10/31
Volume: 164, Issue: 1, Pages: 89-102
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Abstract

This study investigated the optimization of the enzymatic processing conditions for polylactic acid PLA fibers using enzymes consisting of lipases originating from different sources The hydrolytic activity was evaluated taking into consideration the pH temperature enzyme concentration and treatment time The structural change of the PLA fibers was measured in the optimal treatment conditions PLA fiber hydrolysis by lipases was maximized for lipase from Aspergillus niger at 40 °C for 60 min at pH 75 with 60 owf concentration for lipase from Candida cylindracea at 40 °C for 120 min at pH 80 with 70 owf concentration and for lipase from Candida rugosa at 45 °C for 120 min at pH 80 with 70 owf concentration There was a change in protein absorbance of the treatment solution before and after all lipase treatments The analyses of the chemical structure change and structural properties of the PLA due to lipase treatment was confirmed by tensile strength differential scanning calorimetry wideangle Xray scattering diffractometry Fourier transform infrared spectroscopy and scanning electron microscopy

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