In:
Natural Product Communications, SAGE Publications, Vol. 8, No. 5 ( 2013-05), p. 1934578X1300800-
Abstract:
Chemical characterization was made of over-ground flowering parts of Sideritis scardica from R. Macedonia and S. raeseri from both R. Macedonia and R. Albania. GC/FID/MS investigation of the n-hexane extracts revealed more than 90 components, dominated by diterpenes and hydrocarbons. The most abundant components were hentriacontane, nonacosane and heptacosane, and two other components both with MW=286, probably diterpenes, which were not fully identified. In addition, the content of total phenols, made by the Folin-Cioclateu method, ranged up to 50.8 and up to 48.9 mg gallic acid/g for S. scardica and S. raeseri, respectively. Free radical scavenging activity was evaluated by DPPH assay and the activity, presented as IC 50 values, ranged from 3.2-8.9 mg/mL and 7.6-12.6 mg/mL for S. scardica and S. raeseri, respectively. The content of twenty minerals in dried over-ground parts of the plants and in water tea-infusions were determined by the ICP-AES method and some of them alternatively by ETAAS. The most abundant minerals were K 〉 Ca 〉 Mg 〉 P 〉 Fe 〉 Al 〉 Na. The microelements and toxic elements contents were represented in the following order: Zn 〉 Mn 〉 B 〉 Ba 〉 Cu 〉 Sr 〉 Li 〉 Ni 〉 Cr 〉 Co, and Cd 〉 Pb 〉 As, respectively. Water tea-infusions contained a large portion of the total K, P, Na, Cu and Pb, but smaller amounts of the other elements.
Type of Medium:
Online Resource
ISSN:
1934-578X
,
1555-9475
DOI:
10.1177/1934578X1300800525
Language:
English
Publisher:
SAGE Publications
Publication Date:
2013
detail.hit.zdb_id:
2430442-6
SSG:
15,3
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