Instrumentation in Developing Chlorophyll Fluorescence Biosensing: A Review

Sensors

Arturo A. Fernandez-Jaramillo²  Carlos Duarte-Galvan²  Luis M. Contreras-Medina²  Irineo Torres-Pacheco²  Rene de J. Romero-Troncoso¹  Ramon G. Guevara-Gonzalez² 

[1] HSPdigital-CA Mecatronics, Engineering Faculty, Autonomous University of Queretaro, Campus San Juan del Rio, 249 Rio Moctezuma St., San Juan del Rio, 76807, Qro., Mexico; E-Mail:;Biosystems Engineering CA, Postgraduate Study Division, Engineering Faculty, Autonomous University of Queretaro, Cerro de las Campanas St., Querétaro, 76010, Qro., Mexico; E-Mails:

关键词: fluorescence;    chlorophyll;    photosynthesis;    instrumentation;    LED;    laser;    Kautsky;   

DOI  :  10.3390/s120911853

来源: mdpi

【 摘 要 】

Chlorophyll fluorescence can be defined as the red and far-red light emitted by photosynthetic tissue when it is excited by a light source. This is an important phenomenon which permits investigators to obtain important information about the state of health of a photosynthetic sample. This article reviews the current state of the art knowledge regarding the design of new chlorophyll fluorescence sensing systems, providing appropriate information about processes, instrumentation and electronic devices. These types of systems and applications can be created to determine both comfort conditions and current problems within a given subject. The procedure to measure chlorophyll fluorescence is commonly split into two main parts; the first involves chlorophyll excitation, for which there are passive or active methods. The second part of the procedure is to closely measure the chlorophyll fluorescence response with specialized instrumentation systems. Such systems utilize several methods, each with different characteristics regarding to cost, resolution, ease of processing or portability. These methods for the most part include cameras, photodiodes and satellite images.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.