Multielement Determination in Turmeric (Curcuma longa L.) Using Different Digestion Methods

被引:11
作者
Zeiner, Michaela [1 ]
Soltic, Monika [2 ]
Nemet, Ivan [2 ]
Juranovic Cindric, Iva [2 ]
机构
[1] Orebro Univ, Man Technol Environm Res Ctr, Sch Sci & Technol, Fak Gatan 1, S-70182 Orebro, Sweden
[2] Univ Zagreb, Fac Sci, Dept Chem, Horvatovac 102a, Zagreb 10000, Croatia
关键词
atomic spectrometry; Curcuma longa L; elemental pattern; macro- and micro elements; microwave-assisted sample preparation; PLANTS;
D O I
10.3390/molecules27238392
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The antioxidant, anti-inflammatory and antiseptic properties of turmeric (Curcuma longa L.) derive from its rich nutritional composition making it interesting for medicinal uses, besides being used as spice in cooking. To complete the picture on the composition of turmeric, not only the organic compounds need to be known, but also the elemental composition covering essential and potentially toxic elements. The samples were digested in a microwave assisted digestion system using different reagent mixtures. The best digestion mixture was semi-concentrated nitric acid combined with hydrogen peroxide. After optimization of the sample preparation method, the contents of Ag, Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, Ga, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Rb, Se, Sr, Te, Tl, V and Zn in curcuma were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES), as well as by inductively coupled plasma mass spectrometry (ICP-MS). Even if the general composition found is in line with the scarce data in literature, clear differences can be seen between the analyzed samples, considering provenience, production procedures, and harvesting year as potential influencing factors. Whereas all samples contained less As and Pb than regulated by WHO, one limit exceeding was found for Cd.
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页数:12
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