Robust and Automated Internal Quality Grading of a Chinese Green Tea (Longjing) by Near-Infrared Spectroscopy and Chemometrics
المؤلفون المشاركون
Yu, Xiao-Ping
Fu, Xian-Shu
Cui, Hai-Feng
Xu, Lu
Ye, Zi-Hong
المصدر
العدد
المجلد 2013، العدد 2013 (31 ديسمبر/كانون الأول 2013)، ص ص. 1-7، 7ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2013-03-28
دولة النشر
مصر
عدد الصفحات
7
التخصصات الرئيسية
الملخص EN
Near-infrared (NIR) spectroscopy and chemometric methods were applied to internal quality control of a Chinese green tea, Longjing, with Protected Geographical Indication (PGI).
A total of 2745 authentic Longjing tea samples of three different grades were analyzed by NIR spectroscopy.
To remove the influence of abnormal samples, The Stahel-Donoho estimate (SDE) of outlyingness was used for outlier analysis.
Partial least squares discriminant analysis (PLSDA) was then used to classify the grades of tea based on NIR spectra.
Different data preprocessing methods, including smoothing, taking second-order derivative (D2) spectra, and standard normal variate (SNV) transformation, were performed to reduce unwanted spectral variations in samples of the same grade before classification models were developed.
The results demonstrate that smoothing, taking D2 spectra, and SNV can improve the performance of PLSDA models.
With SNV spectra, the model sensitivity was 1.000, 0.955, and 0.924, and the model specificity was 0.979, 0.952, and 0.996 for samples of three grades, respectively.
FT-NIR spectrometry and chemometrics can provide a robust and effective tool for rapid internal quality control of Longjing green tea.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Fu, Xian-Shu& Xu, Lu& Yu, Xiao-Ping& Ye, Zi-Hong& Cui, Hai-Feng. 2013. Robust and Automated Internal Quality Grading of a Chinese Green Tea (Longjing) by Near-Infrared Spectroscopy and Chemometrics. Journal of Spectroscopy،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-448852
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Fu, Xian-Shu…[et al.]. Robust and Automated Internal Quality Grading of a Chinese Green Tea (Longjing) by Near-Infrared Spectroscopy and Chemometrics. Journal of Spectroscopy No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-448852
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Fu, Xian-Shu& Xu, Lu& Yu, Xiao-Ping& Ye, Zi-Hong& Cui, Hai-Feng. Robust and Automated Internal Quality Grading of a Chinese Green Tea (Longjing) by Near-Infrared Spectroscopy and Chemometrics. Journal of Spectroscopy. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-448852
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-448852
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر