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KMID : 1024420110150010070
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Food Engineering Progress
2011 Volume.15 No. 1 p.70 ~ p.74
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Effects of High Pressure Homogenization on Physicochemical Properties of Starch Films
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Kang Eun-Jung
Lee Jae-Kwon
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Abstract
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The effects of high pressure homogenization (microfluidization) on physicochemical properties of normal maize and oxidized maize starch film were studied. The molecular dispersibility of amlyose and amylopectin and the disintegration of granular structure had a marked effect on the physicochemical properties of starch films. The high pressure homogenized starch films showed increased solubility and transmittance due to the absence of gelatinized starch granules. The tensile strength of starch film increased significantly with decreasing oxygen permeability after high pressure homogenization, indicating that starch molecules were more uniformly and fully dispersed during the film formation. As a result, a clear starch film with improved mechanical properties was obtained after high pressure homogenization due to the increased interactions between the uniformly dispersed starch molecules.
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KEYWORD
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starch films, microfluidizer, high pressure homogenization, film properties
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