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Determination of Heavy Metal Contents and Some Basic Aspects of Widely Used Herbal Teas in Turkey
(Chiminform Data S A, 2016) Tercan, Haci Sefa; Ayanoglu, Filiz; Bahadirli, Nadire Pelin
Sage (Salvia aramiensis L.), rosemary (Rosmarinus officinal's L.), hibiscus (Hibiscus sabdariffa L.), linden (FILM argentea Desf), senna (Cassia angustifolia Vahl), green tea (Camellia sinensis L) and zahter (Thymbra spicata L.) are the top selling and locally most widely used herbal teas in Turkey. Proximate analyses and heavy metals (Al, Zn, Cu, Fe, Cd, Pb) contents were determined for seven herbal teas with 12 replicates (from different 12 sailors). The moisture content ranged between 5.49% (senna)-739% (hibiscus) while the total ash content were found between 4.86% (green tea)-10.54% (zahter). Crude fiber content ranged between 31.65-26.76% (rosemary-linden), acid soluble content found highest in hibiscus (1.02), lowest in linden (0.37) and water insoluble content ranged between 2.72-8.16% (green tea-senna). The highest heavy metals values in the experiment; for Al 1716.900 ppm (senna), for Cu 17.250 ppm (senna), for Zn 51.975 ppm (rosemary), for Fe 431.925 ppm (rosemary) were found. Cd was not determined in all samples, The highest average Pb content were obtained from sage with 4.350 ppm. Barely no Pb was found in the samples of green tea, hibiscus, linden and senna.