2022
DOI: 10.3390/molecules27041196
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The Rapid Non-Destructive Detection of Adulteration and Its Degree of Tieguanyin by Fluorescence Hyperspectral Technology

Abstract: Tieguanyin is one of the top ten most popular teas and the representative of oolong tea in China. In this study, a rapid and non-destructive method is developed to detect adulterated tea and its degree. Benshan is used as the adulterated tea, which is about 0%, 10%, 20%, 30%, 40%, and 50% of the total weight of tea samples, mixed with Tieguanyin. Taking the fluorescence spectra from 475 to 1000 nm, we then established the 2-and 6-class discriminant models. The 2-class discriminant models had the best evaluatio… Show more

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Cited by 15 publications
(8 citation statements)
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References 46 publications
(58 reference statements)
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“…Moreover, fluorescence hyperspectral imaging is a non-destructive spectral analysis technique [20], which provides a new way of thinking for the non-destructive testing of rice. This technology excites the electrons in the material to be measured by a laser or other light sources, causing the electrons to jump from a low to a high energy level [21]. When the electrons are at a high energy level, they immediately return to a low one, releasing energy [21].…”
Section: Introductionmentioning
confidence: 99%
See 3 more Smart Citations
“…Moreover, fluorescence hyperspectral imaging is a non-destructive spectral analysis technique [20], which provides a new way of thinking for the non-destructive testing of rice. This technology excites the electrons in the material to be measured by a laser or other light sources, causing the electrons to jump from a low to a high energy level [21]. When the electrons are at a high energy level, they immediately return to a low one, releasing energy [21].…”
Section: Introductionmentioning
confidence: 99%
“…This technology excites the electrons in the material to be measured by a laser or other light sources, causing the electrons to jump from a low to a high energy level [21]. When the electrons are at a high energy level, they immediately return to a low one, releasing energy [21]. This energy is emitted in the form of fluorescence, from which the spectral camera captures the image information and obtains a fluorescence hyperspectral image of the sample [21].…”
Section: Introductionmentioning
confidence: 99%
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“…In addition, this method may damage the structure of tea samples. Because of the shortcomings of the above methods, it is urgent to develop a rapid and nondestructive detection method [ 18 ].…”
Section: Introductionmentioning
confidence: 99%