食品科学 ›› 2009, Vol. 30 ›› Issue (19 ): 114-116.doi: 10.7506/spkx1002-6630-200919024

• 基础研究 • 上一篇    下一篇

体外消化模型下香蕉果肉中铬元素的初级形态分析

徐 飞1,2,3,黄茂芳1,2,*,李积华1,2,叶剑芝1,唐永富1,2   

  1. 1.中国热带农业科学院农产品加工研究所 2.农业部热带作物产品加工重点开放实验室 3.海南大学食品学院
  • 收稿日期:2009-07-18 出版日期:2009-10-01 发布日期:2010-12-29
  • 通讯作者: 黄茂芳1,2,*, E-mail:huangmf@pub.zhanjiang.gd.cn
  • 基金资助:

    海南省自然科学基金项目(50890)

Analysis of Primary Speciation of Cr Element in Banana Pulp with Pretreatment of in vitro Digestion Model

XU Fei1,2,3,HUANG Mao-fang1,2,*,LI Ji-hua1,2,YE Jian-zhi1,TANG Yong-fu1,2   

  1. 1. Agricultural Product Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001,
    China;2. Key Laboratory of Tropical Crop Products Processing, Ministry of Agriculture, Zhanjiang 524001, China;
    3. Food Institute, Hainan University, Danzhou 571737, China)
  • Received:2009-07-18 Online:2009-10-01 Published:2010-12-29
  • Contact: HUANG Mao-fang1,2,*, E-mail:huangmf@pub.zhanjiang.gd.cn

摘要:

在香蕉果肉中Cr 的初级形态分析过程中,引入体外消化模型进行预处理,采用SP220Z 型原子吸收分光光度计测定Cr 元素含量。结果表明:经过体外模型消化处理后可溶态和不溶态Cr 含量分别为0.0036mg/100g 和0.0163mg/100g;Cr 溶解率和残留率分别为16.8498% 和77.0932%,Cr 主要以不溶态形式存在,说明香蕉经过体外消化后能沉淀一定的金属元素;Cr 溶解率和残留率平行实验结果的RSD 分别为2.1768% 和1.9761%,引入体外消化模型,方法整体误差仅为6.0570%,表明在微量元素形态分析过程中引入体外消化模型可行。

关键词: 微量元素, 体外消化模型, 形态

Abstract:

Pretreatment of in vitro digestion model was applied to the analysis of primary speciation of Cr element in banana pulp using an SP220Z-type atomic absorption spectrometry. Results showed that the contents of dissolvable and undissolvable Cr species in banana pulp with in vitro digestion pretreatment were 0.0036mg/100g and 0.0163 mg/100 g, respectively; the dissolution and residual percentages of Cr were 16.8498% and 77.0932%, respectively, and Cr mainly existed in undissolvable state. This reveals that the element can be precipitated by in vitro digestion. The RSDs of replicate determinations for dissolution and residual percentages of Cr were 2.1768% and 1.9761%, respectively and the whole error of this method was only 6.0570%. Thus, in vitro digestion is applicable to speciation analysis of microelements.

Key words: microelement, in vitro digestion model, speciation

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