Publication: Carbon isotope composition as a tool for quality control of herbs, spices and medicinal plants
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Date
2006-01-01
Advisor
Coadvisor
Graduate program
Undergraduate course
Journal Title
Journal ISSN
Volume Title
Publisher
Int Soc Horticultural Science
Type
Work presented at event
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Abstract
Isotope screening is a simple and cheap test for determining the photosynthetic pathway used by plants. The scope of this work was to classify the photosynthetic type of Melissa officinalis L. and Cymbopogon citratus [DC.] Stapf. through studies of the carbon isotope composition (delta C-13), and we are proposing the use of carbon isotope composition results as a tool to control the quality of medicinal plants. For studies of delta C-13 (delta C-13% = [R (sample)/R (standard) - 1] x 10(-3)), dried, powdered leaves were analyzed in a mass spectrometer coupled with an elemental analyzer for determining the ratio R (R = (CO2)-C-13/(CO2)-C-12). As results, M. officinalis presented a C-3 photosynthetic type, and C citratus presented a C-4 photosynthetic type. The carbon isotope composition from this study can be used as quality control of M. officinalis adulterants.
Description
Language
English
Citation
Proceedings Of The Fourth International Conference On Quality And Safety Issues Related To Botanicals. Leuven 1: Int Soc Horticultural Science, n. 720, p. 185-187, 2006.
