2012•Hubei nongye kexueRequires access
Study on Autoclave Preparation Technology and Properties of Potato Resistant Starch
Fan Xin
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Abstract
The autoclave preparation technology and properties of potato resistant starch(RS) were studied.Orthogonal experiment was adopted to optimize the preparation technology base on single factor tests of starch milk concentration,thermal-press temperature,thermal-press time and starch milk pH.The optimum extraction conditions were starch milk concentration,200 g/L;thermal-press temperature,120 ℃;thermal-press time,60 min;starch milk pH,7,under which the RS yield was 4.66%.The enzyme resistance,water absorption and DSC profiles of potato RS were studied.The results showed that potato RS had strong anti-enzymatic ability;the water absorption of potato RS was higher than potato original starch;and the DSC profiles showed potato RS formed a variety of amylose structures which had tighter structure,thus had stronger heat resistance and anti-enzymatic ability.