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

doi:10.7506/spkx1002-6630-200919024

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

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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. 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

Abstract

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

CLC Number:

O611

XU Fei1,2,3，HUANG Mao-fang1,2,*，LI Ji-hua1,2，YE Jian-zhi1，TANG Yong-fu1,2. Analysis of Primary Speciation of Cr Element in Banana Pulp with Pretreatment of in vitro Digestion Model[J]. FOOD SCIENCE, 2009, 30(19 ): 114-116.

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

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