以安顺山药为原料,通过单因素试验(one-factor-at-a-time method,OFAT)及响应面分析法(response surface methodology,RSM)优化压热法制备抗性淀粉(resistant starch,RS)的工艺,并对抗性淀粉的结构进行X-射线衍射仪(X-Ray Diffraction,XRD)、傅立叶红外光谱仪(Fourier Transform Infrared Spectrometer,FT-IR)和扫描电镜(Scanning Electron Microscope,SEM)等表征分析.结果显示:通过工艺条件优化,在淀粉乳百分含量为14 %,pH值为6.0,压热温度为112℃,压热时间为1.5 h时,抗性淀粉得率为24.83 %,与响应面预测值高度相符,结果合理可靠.%Using Anshun yam as the experimental material,one-factor-at-a-time method and response surface methodology were applied to optimize the autoclave method for preparing resistant starch.Meanwhile,the struc-ture of yam RS was analyzed by X-Ray Diffraction, Fourier Transform Infrared Spectrometer and Scanning Electron Microscope.It was found that by optimizing the preparation process,the yield of resistant starch was 24.83 % when the starch milk percentage was 14 %,pH value was 6.0,pressure heat temperature was 112℃and pressure heat time was 1.5 h respectively.The experimental value was highly agreed with the predicted val-ue of response surface.
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