A kinetic study of starch palmitate synthesis by immobilized lipase-catalyzed esterification in solvent free system

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	A kinetic study of starch palmitate synthesis by immobilized lipase-catalyzed esterification in solvent free system
	Wang, Yan 1; Xin JY(辛嘉英)1,2; Shi, Jia 1; Wu, Wenlong 1; Xia CG(夏春谷)2
刊名	Journal of Molecular Catalysis B: Enzymatic
	2014
卷号	101 页码:73-79
关键词	Synthesis of starch palmitate Lipase Novozym 435 Solvent-free system Kinetic model
ISSN号	1381-1177
通讯作者	辛嘉英
英文摘要	The objective of this work was to propose a reaction mechanism and to develop a rate equation for the synthesis of starch palmitate by acylation of the corn starch with palmitic acid using the lipase Novozym 435 in solvent-free system. Initial rate data and progress curve data were used to arrive at a suitable model. The initial rate studies showed that the kinetics obey the Ping-Pong bi-bi mechanism. An attempt to obtain the best fit of this kinetic model through computer simulation yielded in good approximation, the kinetic equation was v = (1.735 × C_fatty-acid × C_starch)/(C_fatty-acid × C_starch + 0.0156 × C_starch + 2.3947 × C_fatty-acid). The mathematical expressions have been tested using several sets of data obtained from reactions carried out under different reaction conditions. The predicted values provide very good fits of the experimental data for the molar of starch from 2 mmol to 10 mmol, the molar of palmitic acid from 5 mmol to 70 mmol, the reaction temperature from 50 °C to 70 °C, amount of lipase from 44 mg to176 mg, rotate speed from 100 r/min to 240 r/min, initial a_w from <0.01 to 0.57.
学科主题	物理化学与绿色催化
收录类别	SCI
资助信息	the National Natural Science Foundation of China (20873034;21073050);the Scientific Research Fund of Heilongjiang Provincial Education Department (2010td04);the Heilongjiang Provincial Funds for Distinguished Young Scientists (JC201106)
语种	英语
WOS记录号	WOS:000332142400011
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/19229]
专题	兰州化学物理研究所_OSSO国家重点实验室
作者单位	1.Harbin Univ Commerce, Key Lab Food Sci & Engn, Harbin 150076, Heilongjiang, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yan,Xin JY,Shi, Jia,et al. A kinetic study of starch palmitate synthesis by immobilized lipase-catalyzed esterification in solvent free system[J]. Journal of Molecular Catalysis B: Enzymatic,2014,101:73-79.
APA	Wang, Yan,Xin JY,Shi, Jia,Wu, Wenlong,&Xia CG.(2014).A kinetic study of starch palmitate synthesis by immobilized lipase-catalyzed esterification in solvent free system.Journal of Molecular Catalysis B: Enzymatic,101,73-79.
MLA	Wang, Yan,et al."A kinetic study of starch palmitate synthesis by immobilized lipase-catalyzed esterification in solvent free system".Journal of Molecular Catalysis B: Enzymatic 101(2014):73-79.