Ariyama Kaoru, Nishida Tadashi, Noda Tomoaki, Kadokura Masashi, Yasui Akemi
Center for Food Quality, Labeling and Consumer Services, 2-1 Shintoshin, Saitama-shi 330-9731, Japan.
J Agric Food Chem. 2006 May 3;54(9):3341-50. doi: 10.1021/jf0525481.
Mineral concentrations of onions (Allium cepa L.) grown under various conditions, including factors (fertilization, crop year, variety, and provenance), were investigated to clarify how much each factor contributes to the variation of their concentrations. This was because the mineral concentrations might be affected by various factors. The ultimate goal of this study was to develop a technique to determine the geographic origins of onions by mineral composition. Samples were onions grown under various conditions at 52 fields in 18 farms in Hokkaido, Japan. Twenty-six elements (Li, Na, Mg, Al, P, K, Ca, Mn, Fe, Co, Ni, Cu, Zn, Rb, Sr, Y, Mo, Cd, Cs, Ba, La, Ce, Nd, Gd, W, and Tl) in these samples were determined by inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry. Fertilization conditions and crop years of onions caused variations of P, Ni, Cu, Rb, Sr, Mo, Cs, and Tl concentrations in onions; different onion varieties also showed variations in numerous element concentrations. However, the variations of mineral compositions of onions by these factors were smaller than the differences between production places with a few exceptions. Furthermore, Na, Rb, and Cs in group IA of the periodic table, Ca, Sr, and Ba in group IIA, and Zn and Cd in group IIB showed similar concentration patterns by group; this result demonstrated that elements in the same periodic groups behaved similarly in terms of their absorption in onions.
研究了在包括施肥、种植年份、品种和产地等各种条件下生长的洋葱（Allium cepa L.）的矿物质浓度，以阐明每个因素对其浓度变化的贡献程度。这是因为矿物质浓度可能受到各种因素的影响。本研究的最终目标是开发一种通过矿物质成分确定洋葱地理来源的技术。样本是日本北海道18个农场52块田地中在各种条件下生长的洋葱。通过电感耦合等离子体原子发射光谱法和电感耦合等离子体质谱法测定了这些样本中的26种元素（锂、钠、镁、铝、磷、钾、钙、锰、铁、钴、镍、铜、锌、铷、锶、钇、钼、镉、铯、钡、镧、铈、钕、钆、钨和铊）。洋葱的施肥条件和种植年份导致洋葱中磷、镍、铜、铷、锶、钼、铯和铊浓度的变化；不同的洋葱品种在多种元素浓度上也表现出差异。然而，除了少数例外，这些因素导致的洋葱矿物质成分变化小于产地之间的差异。此外，周期表第IA族中的钠、铷和铯，第IIA族中的钙、锶和钡，以及第IIB族中的锌和镉呈现出相似的组内浓度模式；这一结果表明，同一周期组中的元素在洋葱中的吸收行为相似。
