Discriminating forchlorfenuron-treated kiwifruits using a portable spectrometer and Vis/NIR diffuse transmittance spectroscopy technology

2017 ◽  
Vol 9 (28) ◽  
pp. 4207-4214 ◽  
Author(s):  
Dayang Liu ◽  
Qianqian Li ◽  
Weiqiang Li ◽  
Biao Yang ◽  
Wenchuan Guo
Keyword(s):  
Optical Fiber ◽  
Wavelength Range ◽  
Near Infrared ◽  
Low Cost ◽  
Fiber Probe ◽  
Charge Coupled Device ◽  
Optical Fiber Probe ◽  
Spectroscopy System

To explore the feasibility of low-cost miniaturized spectrometers in discriminating forchlorfenuron treated kiwifruits, a visible and near infrared (Vis/NIR) diffuse transmittance spectroscopy system was constructed by using a miniaturized charge coupled device (CCD) spectrometer in the wavelength range of 400–1100 nm and a self-developed optical fiber probe.

Near-Infrared Spectroscopy: A Tool for Monitoring Submerged Fermentation Processes Using an Immersion Optical-Fiber Probe

2003 ◽  
Vol 57 (2) ◽  
pp. 132-138 ◽  
Author(s):  
E. Tamburini ◽  
G. Vaccari ◽  
S. Tosi ◽  
A. Trilli
Keyword(s):  
Optical Fiber ◽  
Real Time ◽  
Gas Flow ◽  
Near Infrared ◽  
Nir Spectroscopy ◽  
Real Time Monitoring ◽  
Difference Spectra ◽  
Fiber Probe ◽  
Selective Determination ◽  
Optical Fiber Probe

Near-infrared (NIR) spectroscopy has been developed as a noninvasive tool for the direct, real-time monitoring of glucose, lactic acid, acetic acid, and biomass in liquid cultures of microrganisms of the genera Lactobacillus and Staphylococcus. This was achieved employing a steam-sterilizable optical-fiber probe immersed in the culture (In-line Interactance System®). Second-derivative spectra obtained were subjected to partial least-squares (PLS) regression and the results were used to build predictive models for each analyte of interest. Multivariate regression was carried out on two different sets of spectra, namely whole broth minus the spectral subtraction of water, and raw spectra. A comparison of the two models showed that the first cannot be properly applied to real-time monitoring, so this work suggests calibration based on non-difference spectra, demonstrating it to be sufficiently reliable to allow the selective determination of the analytes with satisfactory levels of prediction (standard error of prediction (SEP) < 10%). Direct interfacing of the NIR system to the bioreactor control system allowed the implementation of completely automated monitoring of different cultivation strategies (continuous, repeated batch). The validity of the in-line analyses carried out was found to depend crucially on maintaining constant hydrodynamic conditions of the stirred cultures because both gas flow and stirring speed variations were found to markedly influence the spectral signal.

Dual-parameter optical fiber probe based on a three-beam Fabry-Perot interferometer

2020 ◽  
pp. 1-1
Author(s):  
Wen Zhang ◽  
Haoye Li ◽  
Lianqing Zhu ◽  
Mingli Dong ◽  
Fanyong Meng
Keyword(s):  
Optical Fiber ◽  
Fiber Probe ◽  
Optical Fiber Probe ◽  
Fabry Perot

scholarly journals Infrared Hollow Optical Fiber Probe for Localized Carbon Dioxide Measurement in Respiratory Tracts

Sensors ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 995 ◽  
Author(s):  
Takashi Katagiri ◽  
Kyosuke Shibayama ◽  
Takeru Iida ◽  
Yuji Matsuura
Keyword(s):  
Carbon Dioxide ◽  
Optical Fiber ◽  
Fiber Probe ◽  
Optical Fiber Probe ◽  
Carbon Dioxide Measurement

Development of a dual optical fiber probe for the hydrodynamic investigation of a horizontal annular drive gas/liquid ejector

2017 ◽  
Vol 56 ◽  
pp. 45-55 ◽  
Author(s):  
Aliyu Musa Aliyu ◽  
Yoon Kee Kim ◽  
Seong Hwan Choi ◽  
Joo Ha Ahn ◽  
Kyung Chun Kim
Keyword(s):  
Optical Fiber ◽  
Fiber Probe ◽  
Optical Fiber Probe

Detection properties of an optical fiber probe for laser speckle velocimetry

1985 ◽  
Vol 55 (6) ◽  
pp. 393-398 ◽  
Author(s):  
Hitoshi Fujii ◽  
Toshimitsu Asakura ◽  
Takashi Okamoto
Keyword(s):  
Optical Fiber ◽  
Laser Speckle ◽  
Fiber Probe ◽  
Optical Fiber Probe

scholarly journals A Surface Plasmon Resonance-Based Optical Fiber Probe Fabricated with Electropolymerized Molecular Imprinting Film for Melamine Detection

Sensors ◽  
2018 ◽  
Vol 18 (3) ◽  
pp. 828 ◽  
Author(s):  
Wei Li ◽  
Yongping Zheng ◽  
Tingwei Zhang ◽  
Songjie Wu ◽  
Jue Zhang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Optical Fiber ◽  
Surface Plasmon ◽  
Molecular Imprinting ◽  
Plasmon Resonance ◽  
Fiber Probe ◽  
Optical Fiber Probe

scholarly journals FABRICATION OF LARGE CONE ANGLE OPTICAL FIBER PROBE BY DYNAMIC CHEMICAL ETCHING METHOD

2001 ◽  
Vol 50 (12) ◽  
pp. 2382
Author(s):  
SUN JIA-LIN ◽  
TIAN GUANG-YAN ◽  
LI QIN ◽  
ZHAO JUN ◽  
GUO JI-HUA ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Chemical Etching ◽  
Cone Angle ◽  
Fiber Probe ◽  
Optical Fiber Probe ◽  
Etching Method ◽  
Large Cone Angle
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