Study of selenium distribution in the protein fractions of the Brazil nut, Bertholletia excelsa

被引：51

作者：

Chunhieng, T

Pétritis, K

Elfakir, C

Brochier, J

Goli, T

Montet, D

机构：

[1] Cirad Amis, PAA, F-34398 Montpellier 5, France

[2] Univ Orleans, ICOA, F-45067 Orleans, France

[3] JBA Agroconcept, F-34160 Castres, France

[4] Inst Technol Cambodge, Dept GCA Bd Pochentong, Phnom Penh, Cambodia

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2004年 / 52卷 / 13期

关键词：

Brazil nut; Bertholletia excelsa; protein; selenium; covalent bonds;

D O I：

10.1021/jf049643e

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The high selenium content of the Brazil nut, Bertholletia excelsa, makes this seed a healthy food qualified as an antiradical protector. The studied nut contained 126 ppm of selenium. Selenium was found to be distributed in the nut protein fractions. The water-extracted fraction, which represented 17.7% of the cake protein, was the richest in selenium with 153 ppm. Analysis by HPLC-MS showed that selenium was linked by a covalent bond to two amino acids to form selenomethionine and selenocystine. The selenomethionine represented a little less than 1% of the total amount of methionine.

引用

页码：4318 / 4322

页数：5

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