Near-infrared spectroscopy for sugar-content detection of Fuji apples using optical fiber

2004 ◽  
Author(s):  
Xiaping Fu ◽  
Yibin Ying ◽  
Yande Liu
Sugar Tech ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 162-169 ◽  
Author(s):  
Pisittinee Chapanya ◽  
Pitiporn Ritthiruangdej ◽  
Rattana Mueangmontri ◽  
Anutin Pattamasuwan ◽  
Wirat Vanichsriratana

2020 ◽  
Vol 57 (1) ◽  
pp. 013002
Author(s):  
刘燕德 Liu Yande ◽  
张雨 Zhang Yu ◽  
徐海 Xu Hai ◽  
姜小刚 Jiang Xiaogang ◽  
王军政 Wang Junzheng

2009 ◽  
Vol 42 (2) ◽  
pp. 285-291 ◽  
Author(s):  
Juan Fernández-Novales ◽  
María-Isabel López ◽  
María-Teresa Sánchez ◽  
José Morales ◽  
Virginia González-Caballero

2003 ◽  
Vol 128 (3) ◽  
pp. 391-396 ◽  
Author(s):  
Satoru Tsuchikawa ◽  
Emiko Sakai ◽  
Kinuyo Inoue ◽  
Kumi Miyamoto

Time-of-flight near infrared spectroscopy (TOF-NIRS) was applied to the detection of sugar and acid content in Satuma mandarin (Citrus unshiu Marc). The combined effects on the time resolved profiles of soluble solids, free acids, laser beam wavelength, and detection position of transmitted light were investigated in detail. Attenuance of peak maxima (At) and time delay of peak maxima (Δt) increased as sugar content increased. However, these optical parameters decreased with increases in acid content. In the case of a model sample of a polyurethane block immersed in specified solutions, At and Δt decreased by adding sucrose or citric acid. These results suggested that time resolved profile was governed not only by the concentration of soluble solid or free acid but also by other inherent factors of a fruit; for example, an optical characteristic of tissue or difference in refractive index between the tissue substance and the liquid. Results indicated the optimum optical parameters for detection of sugar and acid content were At and Δt, respectively.


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