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Pressurized water extraction of isoflavones by experimental design from soybean flour and Soybean Protein Isolate

Moras, Benjamin and Rey, Stéphane and Vilarem, Gérard and Pontalier, Pierre-Yves Pressurized water extraction of isoflavones by experimental design from soybean flour and Soybean Protein Isolate. (2017) Food Chemistry, 214. 9-15. ISSN 0308-8146

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Official URL: https://doi.org/10.1016/j.foodchem.2016.07.053

Abstract

A Doehlert experimental design was conducted and surface response methodology was used to determine the effect of temperature, contact time and solid liquid ratio on isoflavone extraction from soybean flour or Soybean Protein Isolate in pressurized water system. The optimal conditions conducted gave an extraction yield of 85% from soybean flour. For Soybean Protein Isolate compared to soybean flour, the isoflavone extraction yield is 61%. This difference could be explained by higher aglycon content, while aglycon appears to be the least extracted isoflavone by pressurized water. The solid liquid ratio in the ASE cell was the overriding factor in obtaining high yields with both soybean products, while temperature has less influence. A high temperature causes conversion of the malonyls-glucosides and glucosides isoflavone derivatives into glucosides or aglycons forms. pressurized water extraction showed a high solubilization of protein material up to 95% of inserted Soybean Protein Isolate.

Item Type:Article
HAL Id:hal-02386060
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Activ’Inside (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
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Deposited On:29 Nov 2019 09:39

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