Study of Selenium Distribution in the Protein Fractions of the Brazil Nut, Bertholletia excelsa

descriptionPublicationkeyboard_double_arrow_right Article 01 Jun 2004 France English Publisher:American Chemical Society (ACS)Journal:Journal of Agricultural and Food Chemistry, volume 52, pages 4,318-4,322 (issn: 0021-8561, eissn: 1520-5118,

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Authors: Chunhieng, Thavarith; Petritis, Konstantinos; Elfaki, M.G.; Brochier, José; Goli, Thierry; Montet, Didier;

doi: 10.1021/jf049643e

pmid: 15212486

Study of Selenium Distribution in the Protein Fractions of the Brazil Nut, Bertholletia excelsa

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Abstract

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.

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France

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Keywords

Bertholletia excelsa, composition chimique, Mass Spectrometry, protéine végétale, Selenium, Q02 - Traitement et conservation des produits alimentaires, http://aims.fao.org/aos/agrovoc/c_6953, Organoselenium Compounds, http://aims.fao.org/aos/agrovoc/c_6251, Q04 - Composition des produits alimentaires, Selenomethionine, graine, Chromatography, High Pressure Liquid, Plant Proteins, http://aims.fao.org/aos/agrovoc/c_342, http://aims.fao.org/aos/agrovoc/c_8172, http://aims.fao.org/aos/agrovoc/c_886, acide aminé, teneur en protéines, Seeds, extraction, http://aims.fao.org/aos/agrovoc/c_6946, Bertholletia, Cystine, http://aims.fao.org/aos/agrovoc/c_1794, http://aims.fao.org/aos/agrovoc/c_36910

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