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Selective liquid CO2 extraction of purine alkaloids in different Ilex paraguariensis progenies grown under environmental influences.
J Agric Food Chem. 2007 Aug 22; 55(17):6835-41.JA

Abstract

In this investigation, liquid carbon dioxide at 20 degrees C and 150 bar was used for the selective extraction of caffeine and theobromine from dry leaves of mate. A comparison between the chromatograms from CO2 extraction and traditional solvent extraction supports the selectivity of carbon dioxide for these purine alkaloids. The advantages of selective liquid CO2 extraction in terms of speed and resolution of UV/HPLC is also evidenced. A randomized block design of experiments was proposed to investigate the influence of 16 progenies of Ilex paraguariensis grown in 3 diverse sites on the contents of caffeine and theobromine in liquors of mate leaves obtained by extraction with compressed CO2. A significant effect of both these factors on the parameters investigated was observed by involving the F distribution in the statistical analysis. A cluster analysis based on the experimental uncertainties in the contents of these two methylxanthines has identified from four to six different groups of mate progenies.

Authors+Show Affiliations

Universidade Paranaense, Department of Pharmacy, Av. Parigot de Souza, 3636 Jardim Prada, Toledo-PR, CEP: 85903-170, Brazil.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17650001

Citation

Cardozo, Euclides Lara, et al. "Selective Liquid CO2 Extraction of Purine Alkaloids in Different Ilex Paraguariensis Progenies Grown Under Environmental Influences." Journal of Agricultural and Food Chemistry, vol. 55, no. 17, 2007, pp. 6835-41.
Cardozo EL, Cardozo-Filho L, Filho OF, et al. Selective liquid CO2 extraction of purine alkaloids in different Ilex paraguariensis progenies grown under environmental influences. J Agric Food Chem. 2007;55(17):6835-41.
Cardozo, E. L., Cardozo-Filho, L., Filho, O. F., & Zanoelo, E. F. (2007). Selective liquid CO2 extraction of purine alkaloids in different Ilex paraguariensis progenies grown under environmental influences. Journal of Agricultural and Food Chemistry, 55(17), 6835-41.
Cardozo EL, et al. Selective Liquid CO2 Extraction of Purine Alkaloids in Different Ilex Paraguariensis Progenies Grown Under Environmental Influences. J Agric Food Chem. 2007 Aug 22;55(17):6835-41. PubMed PMID: 17650001.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Selective liquid CO2 extraction of purine alkaloids in different Ilex paraguariensis progenies grown under environmental influences. AU - Cardozo,Euclides Lara,Jr AU - Cardozo-Filho,Lucio, AU - Filho,Osvaldo Ferrarese, AU - Zanoelo,Everton Fernando, Y1 - 2007/07/25/ PY - 2007/7/26/pubmed PY - 2007/12/6/medline PY - 2007/7/26/entrez SP - 6835 EP - 41 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 55 IS - 17 N2 - In this investigation, liquid carbon dioxide at 20 degrees C and 150 bar was used for the selective extraction of caffeine and theobromine from dry leaves of mate. A comparison between the chromatograms from CO2 extraction and traditional solvent extraction supports the selectivity of carbon dioxide for these purine alkaloids. The advantages of selective liquid CO2 extraction in terms of speed and resolution of UV/HPLC is also evidenced. A randomized block design of experiments was proposed to investigate the influence of 16 progenies of Ilex paraguariensis grown in 3 diverse sites on the contents of caffeine and theobromine in liquors of mate leaves obtained by extraction with compressed CO2. A significant effect of both these factors on the parameters investigated was observed by involving the F distribution in the statistical analysis. A cluster analysis based on the experimental uncertainties in the contents of these two methylxanthines has identified from four to six different groups of mate progenies. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/17650001/Selective_liquid_CO2_extraction_of_purine_alkaloids_in_different_Ilex_paraguariensis_progenies_grown_under_environmental_influences_ L2 - https://doi.org/10.1021/jf0706225 DB - PRIME DP - Unbound Medicine ER -