期刊
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
卷 72, 期 -, 页码 172-176出版社
ELSEVIER
DOI: 10.1016/j.jpba.2012.08.007
关键词
Cordyceps kyushuensis Kawam; ICP-MS; Microwave digestion; Multi-element analysis; Food composition
资金
- National Natural Science Foundation of China [30770041, 30970012]
- China Postdoctoral Science Foundation
- Shandong Provincial Foundation for Science [2007GG2NS02056]
- Foundation of State Key Laboratory of Microbial Technology [M2010-02]
In this study, a total of 20 elements (essential, non-essential and toxic): lithium (Li), sodium (Na), potassium (K), gallium (Ga), magnesium (Mg), zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), vanadium (V), chromium (Cr), nickel (Ni), cobalt (Co), molybdenum (Mo), selenium (Se), barium (Ba), tin (Sn), arsenic (As), lead (Pb) cadmium (Cd) and mercury (Hg) in natural and cultured Cordyceps kyushuensis have been determined by means of inductively coupled plasma mass spectrometry (ICP-MS). Cultured stroma, natural stroma and natural worm were digested by microwave-assisted method before analysis. The proposed ICP-MS method was validated by analyzing a certified reference material (CRM) GBW10015 (spinach). The results of one-way analysis of variance (ANOVA) revealed that the element concentrations in the three kinds of samples were significantly different (p < 0.05). Except for Mg, Zn, Cu, the values of other elemental contents were the highest in the stroma of natural C kyushuensis. In comparison with the worm, the concentrations of determined elements in wild stroma were higher. The remarkable difference of elemental contents between cultured and natural stroma may be caused by distinct growing environment. This finding highlighted the usefulness of ICP-MS elemental analysis and enhanced the value of C kyushuensis as a candidate for nourishing food based on its composition. (C) 2012 Elsevier B.V. All rights reserved.
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