Combining near-infrared radiance of vegetation and fluorescence spectroscopy to detect effects of abiotic changes and stresses

2022 ◽  
Vol 270 ◽  
pp. 112856
Author(s):  
Yelu Zeng ◽  
Min Chen ◽  
Dalei Hao ◽  
Alexander Damm ◽  
Grayson Badgley ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Near Infrared ◽  
Infrared Radiance

Near infrared laser induced fluorescence spectroscopy of RuC

2014 ◽  
Vol 297 ◽  
pp. 25-31 ◽  
Author(s):  
Mei Yang ◽  
Tongmei Ma ◽  
B.W. Li ◽  
Man-Chor Chan ◽  
A.S.-C. Cheung
Keyword(s):  
Fluorescence Spectroscopy ◽  
Near Infrared ◽  
Laser Induced Fluorescence ◽  
Infrared Laser

scholarly journals Raman, near-infrared and fluorescence spectroscopy for determination of collagen content in ground meat and poultry by-products

LWT ◽  
2021 ◽  
Vol 140 ◽  
pp. 110592
Author(s):  
Olga Monago-Maraña ◽  
Jens Petter Wold ◽  
Rune Rødbotten ◽  
Katinka Riiser Dankel ◽  
Nils Kristian Afseth
Keyword(s):  
Fluorescence Spectroscopy ◽  
Near Infrared ◽  
Collagen Content ◽  
Ground Meat ◽  
By Products

scholarly journals Degradation of Bacteriochlorophyll a in Rhodopseudomonas sphaeroides R26

1985 ◽  
Vol 40 (9-10) ◽  
pp. 685-692 ◽  
Author(s):  
H. Haidl ◽  
K. Knödlmayr ◽  
W. Rüdiger ◽  
H . Scheer ◽  
S. Schoch ◽  
...  
Keyword(s):  
Low Temperature ◽  
Absorption Band ◽  
Fluorescence Spectroscopy ◽  
Near Infrared ◽  
Rhodopseudomonas Sphaeroides ◽  
Unknown Structure ◽  
Chemical Correlation ◽  
Bacteriopheophytin A ◽  
Predominant Product

Abstract A series of pigments of the bacteriopheophytin a spectral type have been isolated from ageing cultures of Rhodopseudomonas sphaeroides strain R26. These pigments are formed in varying amounts, and can be most readily analyzed in vivo by their absorption in the 530 nm spectral range. They are enriched in sedimenting cells, but their formation is not affected by light. By chromatographic comparison with authentic pigments and chemical correlation, the following pigments have been identified: bacteriopheophytin a, bacteriopheophorbide a (which is the predominant product), pyrobacteriopheophorbide a and a fourth, very polar bacteriopheophytin a-type product of unknown structure. The major portion of these newly formed pigments is present in the cells in a state, in which the near-infrared absorption band is shifted to longer wavelengths. As shown by low temperature fluorescence spectroscopy, these forms are very similar to bacteriopheophorbide a aggregates.

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