橄榄矿质元素的测定及品质比较

采用微波消解- 火焰原子吸收光谱法，测定粤东地区不同橄榄品种果实中10 种矿质元素的含量。结果表明，各种橄榄的矿质元素含量高低顺序基本一致，但是含量大小有差异；差异的原因除了环境因素外，还与遗传因素、元素吸收率有关。21 种橄榄中10 种矿质元素含量分别是：Ca 2040.20～4348.89mg/kg、Mg 926.38～1175.12mg/kg、Na 78.77～143.55mg/kg、Fe 80.17～88.27mg/kg、Mn 39.47～62.30mg/kg、Zn 23.13～28.71mg/kg、Cu 9.59～16.39mg/kg、Cr 3.17～12.95mg/kg、Co 2.30～4.04mg/kg、Ni 1.23～1.27mg/kg。土榄、青皮、下院和小丁香属于优良品种，它们含有丰富的矿质元素。

Determination of Mineral Elements in Different Varieties of Chinese Olives and Quality Comparison

The contents of 10 mineral elements in 21 different varieties of Chinese olive fruits growing in east Guangdong were measured by the method of microwave digestion followed by flame atomic absorption spectrometry. The results showed the varieties of Chinese olive fruits tested in this study displayed basically identical rank order for 10 mineral elements by content, but there was a great difference in each of these mineral elements among these varieties of Chinese olive fruits. Besides environmental factors, the difference was also ascribed to genetic factors and element absorption. The content ranges of 10 mineral elements in these varieties of Chinese olive fruits were as follows: Ca 2040.20－4348.89 mg/kg, Mg 926.38－1175.12 mg/kg, Na 78.77－143.55 mg/kg, Fe 80.17－88.27 mg/kg, Mn 39.47－62.30 mg/kg, Zn 23.13－28.71 mg/kg, Cu 9.59－ 16.39 mg/kg, Cr 3.17－12.95 mg/kg, Co 2.30－4.04 mg/kg, and Ni 1.23－1.27 mg/kg. The excellent Chinese olive varieties were ‘Tulan’, ‘Qingpi’,‘Xiayuan’and‘Xiaodingxiang’, all of which were abundant in mineral elements.