Journal
MICROCHEMICAL JOURNAL
Volume 158, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.microc.2020.105255
Keywords
Mid-infrared spectroscopy; GO-TAP; Pu-erh tea; Chemometrics; Age prediction
Categories
Funding
- National Natural Science Foundation of China [31972164, 21776321, 21665022, 21776259]
- Guizhou Provincial Science and Technology Department [QKHJC [2017]1186, QKHZC [2019] 2816, QKHPTRC [2020]5009]
- Talented Researcher Program from Guizhou Provincial Department of Education [QJHKYZ [2018] 073]
- Tongren Science and Technology Bureau [TSKY2019-3]
- Talented Youth Cultivation Program from the Fundamental Research Funds for the Central Universities
- South-Central University for Nationalities [CZP20007]
Ask authors/readers for more resources
Pu-erh tea is a unique post-fermented tea with special quality and unique aroma characteristics, which are achieved by aging as part of the tea-making processing in China. In this work, we developed a new method, based on the combination of the mid-infrared (MIR) spectroscopy of graphene oxide-5,10,15,20-mesotetra (4-aminophenyl) porphyrin hybrid (GO-TAP), with chemometrics, for the variety identification and age prediction of twelve Pu-erh teas. Partial least squares discriminant analysis (PLSDA) and partial least squares regression (PLSR) models were respectively employed to classify the variety of and predict the age of Pu-erh teas based on the collected MIR spectra. Compared with traditional MIR spectroscopy, MIR spectroscopy based on GO-TAP gave better accuracy and specificity in variety classification and age prediction. The GO-TAP complex-based MIR spectroscopy sensor coupled with chemometrics could achieve 100% accuracy for variety classification and predicts storage time of Pu-erh tea. This method can be applied for the accurate identification and prediction of Pu-erh tea storage time, and it might have enormous potential for the application in storage time identification of other food stuff.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available