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擠壓復合酶法制備玉米多孔淀粉工藝參數(shù)優(yōu)化
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哈爾濱市學科帶頭人基金資助項目（2012RFXXN107）、“十二五”國家科技支撐計劃資助項目（2012BAD34B02）和黑龍江省教育廳科學技術(shù)研究重點資助項目（12511z006）


Optimization of Technology Parameters of Corn Porous Starch by Extrusion-Enzyme Synergistic Method
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    摘要:

    以擠壓機機筒溫度,、物料含水率,、螺桿轉(zhuǎn)速、?？字睆綖榭疾煲蛩?，多孔淀粉吸油率為評價指標，通過單因素與響應面試驗,，經(jīng)Design-Expert軟件處理,，建立各因素對指標影響的數(shù)值模型，分析模型各因素之間交互作用對指標的影響,。試驗結(jié)果表明,，在機筒溫度68℃,、物料含水率42%、螺桿轉(zhuǎn)速150 r/min,、?？字睆?2 mm擠壓條件下，多孔淀粉吸油率為62.13%,，比未經(jīng)擠壓的多孔淀粉吸油率提高29.78%,。掃描電鏡顯示擠壓復合酶法制備的多孔淀粉微觀結(jié)構(gòu)呈多孔的蜂窩狀。

    Abstract:

    Porous starch was produced with corn starch by using extrusion pretreatment before enzymolysis, and the effect of system parameters on oil absorption rate of porous starch were investigated. Barrel temperature, moisture content of material, rotation speed of screw and aperture diameter of extruding machine were considered as factors, the oil absorption rate of porous corn starch was employed as evaluation index. Through the experiment of single factor and response surface experiment, with the aid of Design Expert, the mathematical model of response factors on the index was established. The effect of interaction between factors of models on index was analyzed. The results indicated that the optimal extrusion conditions were barrel temperature of 68℃, moisture content of material of 42%, screw speed of 150 r/min and the aperture diameter of 12 mm. Under the optimal conditions, the oil absorption rate was 62.13%, and the oil absorption rate had increased by 29.78% compared with that not treated with extrusion. SEM indicated that the microstructure of porous starch was alveolate.

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劉宇欣,肖志剛,楊慶余,王利民,許慧,陳昊.擠壓復合酶法制備玉米多孔淀粉工藝參數(shù)優(yōu)化[J].農(nóng)業(yè)機械學報,2013,44(4):171-178. Liu Yuxin, Xiao Zhigang, Yang Qingyu, Wang Limin, Xu Hui, Chen Hao. Optimization of Technology Parameters of Corn Porous Starch by Extrusion-Enzyme Synergistic Method[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(4):171-178.

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  • 在線發(fā)布日期: 2013-03-28
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