Int. J. Mol. Sci. 2012, 13(6), 7226-7236; doi:10.3390/ijms13067226
Article

Biosysthesis of Corn Starch Palmitate by Lipase Novozym 435

1,2,* email, 1email, 1email, 1email, 1email and 2email
Received: 23 April 2012; in revised form: 12 May 2012 / Accepted: 23 May 2012 / Published: 12 June 2012
(This article belongs to the Special Issue Organic Synthesis Using Biocatalyst)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Esterification of starch was carried out to expand the usefulness of starch for a myriad of industrial applications. Lipase B from Candida antarctica, immobilized on macroporous acrylic resin (Novozym 435), was used for starch esterification in two reaction systems: micro-solvent system and solvent-free system. The esterification of corn starch with palmitic acid in the solvent-free system and micro-solvent system gave a degree of substitution (DS) of 1.04 and 0.0072 respectively. Esterification of corn starch with palmitic acid was confirmed by UV spectroscopy and IR spectroscopy. The results of emulsifying property analysis showed that the starch palmitate with higher DS contributes to the higher emulsifying property (67.6%) and emulsion stability (79.6%) than the native starch (5.3% and 3.9%). Modified starch obtained by esterification that possesses emulsifying properties and has long chain fatty acids, like palmitic acid, has been widely used in the food, pharmaceutical and biomedical applications industries.
Keywords: corn starch palmitate; micro-solvent system; solvent-free system; lipase esterification; emulsifying property
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MDPI and ACS Style

Xin, J.-Y.; Wang, Y.; Liu, T.; Lin, K.; Chang, L.; Xia, C.-G. Biosysthesis of Corn Starch Palmitate by Lipase Novozym 435. Int. J. Mol. Sci. 2012, 13, 7226-7236.

AMA Style

Xin J-Y, Wang Y, Liu T, Lin K, Chang L, Xia C-G. Biosysthesis of Corn Starch Palmitate by Lipase Novozym 435. International Journal of Molecular Sciences. 2012; 13(6):7226-7236.

Chicago/Turabian Style

Xin, Jia-Ying; Wang, Yan; Liu, Tie; Lin, Kai; Chang, Le; Xia, Chun-Gu. 2012. "Biosysthesis of Corn Starch Palmitate by Lipase Novozym 435." Int. J. Mol. Sci. 13, no. 6: 7226-7236.

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