Naslov
Elemental Composition and Chemometric Characterization of Pyrethrum Plant Materials and Insecticidal Flower Extracts

Autori
Rončević, Sanda ; Pitarević Svedružić, Lovorka ; Nemet, Ivan

Izvornik
Analytical letters (0003-2719) 47 (2014), 4; 627-640

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
HPLC; ICP-AES; natural insecticide; principal component analysis; trace elements

Sažetak
Elemental composition of native and cultivated pyrethrum plant (Tanacetum cinerariifolium) and their insecticidal extracts obtained from dried flower heads was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The accuracy of analytical procedure which included pressurized digestion of plant samples in HNO3/H2O2 was tested by certified reference materials. Acceptable recoveries (90-110%) for the majority of elements measured in simultaneous multielement mode were obtained. The total pyrethrins content was determined by use of HPLC and it gave 2.09% for cultivated plants and 1.58% for the native species occurred in wild. The content of 18 elements along with pyrethrins content was subjected to statistical multivariate analysis which showed different pattern of plant parts. The root parts were characterized by combination of loadings of Fe, Al, Ni, Cr, Sr and Ba, while the stem, leaf and flower parts showed more relevant contribution of Na, K, Ca, Mg, P, S, Mn and Cu. Higher loading of pyrethrins was the main characteristic of dried flower extracts. It was also observed that microelements such as Cu, Al and Fe were more readily transferred into natural insecticide extracts.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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