Analysis of polyphenols, phytosterols, and bitter principles in Teucrium L. species

Central European Journal of Biology - Tập 7 - Trang 542-550 - 2012
Renata Jurišić Grubešić1, Dario Kremer2, Sanda Vladimir-Knežević3, Jadranka Vuković Rodríguez1
1Department of Analytics and Control of Medicines, University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
2Department of Pharmaceutical Botany with “Fran Kušan” Pharmaceutical Botanical Garden, University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
3Department of Pharmacognosy, University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia

Tóm tắt

Total polyphenols, tannins, β-sitosterol, and bitterness values were determined in native and cultivated populations of Teucrium L. species from Croatia (T. arduini L., T. botrys L., T. chamaedrys L., T. flavum L., T. montanum L., T. polium L., and T. scordium L. subsp. scordioides Schreb.). Teucrium species have long been present in folk medicine for diverse medicinal uses, but little is known about polyphenols, phytosterols, and bitter principles. Spectrophotometrically determined contents of total polyphenols (TP) and tannins (T) significantly varied among investigated Teucrium species and were somewhat higher in native populations. The highest TP and T contents were measured in native specimens of T. montanum (TP: 13.68%; T: 3.48%). Scanning densitometry was used for measurements of β-sitosterol levels in plant samples ranged from 0.056% (T. montanum) to 0.129% (T. botrys), and it was not significantly different between native and cultivated specimens of the same plant species. Bitterness values were similar for native and cultivated samples of the same plant species; the highest was measured for T. montanum (15659). The present study suggests that Teucrium species growing in Croatia have potential for cultivation and might be a valuable source of natural bioactive compounds.

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Thông tin xuất bản

Central European Journal of Biology

Tập 7

542-550

Thông tin tác giả