NDLI: Spectrofluorimetric method for the determination of large chlorophyll a/b ratios

Content Provider	Springer Nature Link
Author	Talbot, M.F.J. Sauer, Kenneth
Copyright Year	1997
Abstract	A practical spectrofluorimetric calibration method at room temperature is described for determining large chlorophyll a/b ratios on direct extracts from plant material of pigments in 80% aqueous acetone, dimethyl sulfoxide, and N,N′-dimethylformamide. The method is based on the work of Boardman and Thorne [Boardman NK and Thorne SW (1971) Biochim Biophys Acta 253: 222–231] who used diethyl ether as solvent. We repeated the calibration in diethyl ether and find significantly different parameters for the calibration curve. The range of standards in this work included solutions with chlorophyll a/b ratios of 10–125 in dimethyl sulfoxide, and of 10–220 in the other solvents. Fluorescence emission spectra were found to be a highly sensitive method for assessing chlorophyll purity. We determined the limits of sensitivity for each solvent from the calibration data. The empirically determined slope of the calibration curve was shown to be related to intrinsic properties of the chlorophylls in solution; this allows predictions of the performance of the method in other solvents.
Starting Page	73
Ending Page	79
Page Count	7
File Format	PDF
ISSN	01668595
Journal	Photosynthesis Research
Volume Number	53
Issue Number	1
e-ISSN	15735079
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1997-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science Medicine Biochemistry

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