Mineral composition of Lippia alba (Mill.) N.E. Brown leaves

Journal of the Brazilian Chemical Society

Pedro S. Dos Reis²  Idalia Helena S. Estevam²  Wagna P. C. Dos Santos¹  Maria Graças A. Korn¹  Jorge M. David¹  Juceni P. David¹  Rennan G. O. Araújo¹  Maria Fernanda Pimentel¹  Sérgio L. C. Ferreira¹ 

[1] ,Universidade do Estado da Bahia Departamento de Ciências Exatas e da Terra Salvador BA ,Brazil

关键词: Lippia alba;    mineral composition;    multivariate analysis;   

DOI  :  10.1590/S0103-50532010001000015

来源: SciELO

【 摘 要 】

Leaves of Lippia alba (Mill.) N.E. Brown are used for the preparation of tea infusions that are employed in folk medicine. In this paper, the mineral composition of Lippia alba (Mill.) leaves, collected from different Brazilian cities, was evaluated. The samples were digested using nitric acid and hydrogen peroxide on a hot plate and were analyzed using inductively coupled plasma optical emission spectrometry (ICP OES). SRM 1515 apple leaves from NIST were used for checking accuracy. The results demonstrated that calcium, magnesium and phosphorus have average contents of 1,950, 2,856 and 2,335 mg 100 g-1, respectively, and concentration ranges of 767-3,887, 314-8,591 and 247-9,214 mg 100 g-1, respectively. The microelements barium, zinc, copper, iron, manganese and nickel have average contents of 2.16, 2.95, 0.94, 11.2, 4.25 and 0.09 mg 100 g-1, respectively, and concentration ranges of 0.66-7.1, 1.35-6.3, 0.33-1.7, 0.98-34, 0.82-7.4 and 0.03-0.15 mg 100 g−1, respectively. The data were also evaluated using principal component analysis (PCA).

【 授权许可】

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