| 光程变化对基于近红外光谱的黄酒品质检测的影响 |
| |
| 引用本文： | 林涛,于海燕,徐惠荣,应义斌. 光程变化对基于近红外光谱的黄酒品质检测的影响[J]. 光谱学与光谱分析, 2009, 29(4): 950-955. DOI: 10.3964/j.issn.1000-0593(2009)04-0950-06 |
| |
| 作者姓名： | 林涛 于海燕 徐惠荣 应义斌 |
| |
| 作者单位： | 浙江大学生物系统工程与食品科学学院,浙江,杭州,310029;浙江大学生物系统工程与食品科学学院,浙江,杭州,310029;浙江大学生物系统工程与食品科学学院,浙江,杭州,310029;浙江大学生物系统工程与食品科学学院,浙江,杭州,310029 |
| |
| 基金项目： | 国家科技支撑计划，教育部新世纪优秀人才支持计划 |
| |
| 摘 要： | 以绍兴酒为研究对象,利用近红外光谱分析技术和化学计量学分析方法,开展了光程变化对基于近红外光谱的黄酒品质检测影响的研究,建立了黄酒酒精度、糖度和pH值3个品质指标的分析模型.通过比较0.5,1,1.5,2,2.5和3 mm 6个不同光程,并比较原始光谱、一阶微分光谱和二阶微分光谱三种光谱预处理方式对模型性能的影响,确定了这3个指标的最佳检测方式.黄酒酒精度和pH的最佳检测方式为:光程2 mm,采用偏最小二乘回归结合原始光谱;糖度的最佳检测方式为光程1mm,采用偏最小二乘回归结合原始光谱.这一研究表明光程变化对基于近红外光谱的黄酒品质检测有影响,选择合适的光程能够有效地提高检测精度.
|
| 关 键 词： | 近红外光谱 黄酒 光程 光谱预处理 |
| 收稿时间： | 2007-10-26 |
Effect of Pathlength Variation on the NIR Spectra for Quality Evaluation of Chinese Rice Wine |
| |
| LIN Tan,YU Hai-yan,XU Hui-rong,YING Yi-bin. Effect of Pathlength Variation on the NIR Spectra for Quality Evaluation of Chinese Rice Wine[J]. Spectroscopy and Spectral Analysis, 2009, 29(4): 950-955. DOI: 10.3964/j.issn.1000-0593(2009)04-0950-06 |
| |
| Authors: | LIN Tan YU Hai-yan XU Hui-rong YING Yi-bin |
| |
| Affiliation: | LIN Tao,YU Hai-yan,XU Hui-rong,YING Yi-bin College of Biosystems Engineering , Food Science,Zhejiang University,Hangzhou 310029,China |
| |
| Abstract: | Near infrared (NIR) spectroscopy and chemometrics were applied to determine the effect of pathlength variation on the spectra of the Chinese rice wine and the consequences of the prediction precision of calibration models developed for measuring alcoholic degree,sugar content,and pH was investigated in the present research. Samples were scanned in transmission mode using a commercial FT-NIR spectrometer and a demountable liquid cell for versatile path length liquid sampling. By comparing the results of perf... |
| |
| Keywords: | Near infrared spectroscopy Chinese rice wine Optical pathlength Spectra pretreatment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
