基于ICP-MS的不同来源小麦麸皮矿物元素对比分析

发布时间：2018-02-26 18:41

  本文关键词： 小麦麸皮 营养品质 安全品质 矿物元素 对比分析　出处：《中国食品学报》2017年07期 　论文类型：期刊论文

【摘要】：收集我国小麦主产区12家大型面粉企业的小麦麸皮样品,在基本营养和安全品质分析基础上,采用ICP-MS重点对样品矿物元素进行对比分析。结果表明:样品中的膳食纤维、粗蛋白、总淀粉、粗脂肪、灰分平均含量分别为46.07%,18.77%,18.36%,3.37%,6.02%,戊聚糖占总膳食纤维的59.28%;小麦麸皮富含矿物元素,必需常量元素中K含量最高,Na含量变化最大(变异系数73.09%);必需微量元素中Fe含量最高,Se,Co含量变化最大(CV80%)。统计分析结果表明,小麦麸皮必需矿物元素之间存在一定的相关性,K,Mo,Mn,Se,Co是小麦麸皮必需矿物元素的特征元素,小麦麸皮中矿物元素含量存在很大的地域性特征。根据食品中污染物限量标准,所有样品的有毒矿物元素中As均未超标,部分样品Cd和Pb超标。研究结果为小麦麸皮品质评价和开发利用提供数据支持。
[Abstract]:The wheat bran samples from 12 large flour enterprises in the main wheat production areas of China were collected. On the basis of the analysis of basic nutrition and safety quality, the mineral elements of the samples were analyzed by ICP-MS. The average contents of crude protein, total starch, crude fat and ash were respectively 46.07 and 18.36 and 3.37 and 6.02, respectively. Pentosan accounted for 59.28 percent of the total dietary fiber, and wheat bran was rich in mineral elements. The content of Na is the highest in essential constant elements (variation coefficient is 73.09), and the content of Fe in essential trace elements is the highest. There is a certain correlation between essential mineral elements of wheat bran and the content of mineral elements in wheat bran is a characteristic element of essential mineral elements of wheat bran, and the content of mineral elements in wheat bran is very regional. According to the limit standard of contaminants in food, the content of mineral elements in wheat bran is very regional. The toxic mineral elements of all samples were not in excess of the standard, while some samples of CD and Pb exceeded the standard. The results provided data support for the evaluation of wheat bran quality and the development and utilization of wheat bran.
【作者单位】： 中国农业科学院农产品加工研究所农业部农产品加工综合性重点实验室;
【基金】：公益性行业(农业)科研专项(201303071) 科技部国际科技合作计划项目(010S2012ZR0302) 国家自然科学基金项目(31471679)
【分类号】：O657.63;TS210.9
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本文编号：1539215