Reliability and Chemical Composition Analysis of Tobacco Leaf Grade Model by Near-Infrared Spectroscopy

Yi-lin LIU; Hai-yan ZHANG; Hai-gen PENG; Long-lian ZHAO; Xiao-qiu TAO; Jun-hui LI

doi:10.3964/j.issn.1000-0593(2020)10-3260-05

Journals >Spectroscopy and Spectral Analysis >Volume 40 >Issue 10 >Page 3260 > Article

Spectroscopy and Spectral Analysis
Vol. 40, Issue 10, 3260 (2020)

Reliability and Chemical Composition Analysis of Tobacco Leaf Grade Model by Near-Infrared Spectroscopy

Yi-lin LIU^1、1、*, Hai-yan ZHANG^1、1, Hai-gen PENG^1、1, Long-lian ZHAO^1、1, Xiao-qiu TAO^1、1, and Jun-hui LI^1、1

Author Affiliations

¹[in Chinese]

¹1. College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China

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DOI: 10.3964/j.issn.1000-0593(2020)10-3260-05 Cite this Article

Yi-lin LIU, Hai-yan ZHANG, Hai-gen PENG, Long-lian ZHAO, Xiao-qiu TAO, Jun-hui LI. Reliability and Chemical Composition Analysis of Tobacco Leaf Grade Model by Near-Infrared Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2020, 40(10): 3260 Copy Citation Text

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Fig. 1. PPF projection with 8 principal components

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Fig. 2. Spectrum during 4 200~5 200 cm^-1

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部位	2014年	2015年	2016年	总计
上部	85	65	50	200
中部	85	65	50	200
下部	85	65	0	150

Table 1. Sample and parts

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部位类别	编码
部位类别	A	B	C
3类	100	010	001

Table 2. Category code

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识别合理率(%): 97.80
烟叶部位	上部	中部	下部
上部	92.86	7.14	0.00
中部	14.37	74.25	11.38
下部	2.20	26.37	71.43

Table 3. Part discrimination results based on near-infrared data (internal cross)

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波数/cm^-1	振动基团	主要结构
4 250~4 350	C—H等	纤维素
4 700~4 800	O—H等	淀粉等糖类物质
5 100~5 200	N—H, C=O等	酰胺

Table 4. Organic groups absorbed in different frequency ranges

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	总糖	烟碱	总氮	纤维素	酰胺
上部	低	高	高	高	高
中部	高	中	中	中	中
下部	高	低	低	低	低

Table 5. Chemical composition characteristics of different grades of tobacco in Sichuan Province

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