Journal of Shanghai Jiaotong University
• Chemical Engineering • Previous Articles
SHAO Xiaolonga,b,ZHU Jiangweib,LI Yunfeib
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Abstract: To obtain the effect and quantitative information of water components in sweet corn by different blanching temperature, Statistical analysis system (SAS) was applied to deal with lowfield nuclear magnetic resonance (LFNMR) data of blanched sweet corn. Statistic analysis on batch raw data of LFNMR was performed by SAS system, including exponential fitting, principal component analysis (PCA) and partial least squares regression (PLSR). The corresponding SAS codes were provided. The fitting result of multiexponential model indicates that the percentages of two components with relaxation times (405-750 ms) and (50-70 ms) change distinctly. Three blanching temperature ranges: 20-40, 50-70 and 80-100 °C are roughly discriminated by PCA. PLSR does well in prediction of bound water in blanched sweet corn (determined coefficient is 0.974, root mean square error of crossvalidation is 0.32%). From the whole data processing, SAS programming performs efficiently on data management and analysis and gives valuable reference for LNNMR application.
CLC Number:
O657
SHAO Xiaolonga,b,ZHU Jiangweib,LI Yunfeib. Statistical Analysis for LowField Nuclear Magnetic Resonance Batch Data of Sweet Corn[J]. Journal of Shanghai Jiaotong University.
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https://xuebao.sjtu.edu.cn/EN/Y2011/V45/I01/144