Role of metal complexation on the solubility and enzymatic hydrolysis of phytate.

Phytate is a dominant form of organic phosphorus (P) in the environment. Complexation and precipitation with polyvalent metal ions can stabilize phytate, thereby significantly hinder the hydrolysis by enzymes. Here, we studied the stability and hydrolyzability of environmentally relevant metal phyta...

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Autores principales:	Mingjing Sun, Zhongqi He, Deb P Jaisi
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e2bbc9ac8c41422c8e32770f1bfe5e3b
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spelling	oai:doaj.org-article:e2bbc9ac8c41422c8e32770f1bfe5e3b2021-12-02T20:19:36ZRole of metal complexation on the solubility and enzymatic hydrolysis of phytate.1932-620310.1371/journal.pone.0255787https://doaj.org/article/e2bbc9ac8c41422c8e32770f1bfe5e3b2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255787https://doaj.org/toc/1932-6203Phytate is a dominant form of organic phosphorus (P) in the environment. Complexation and precipitation with polyvalent metal ions can stabilize phytate, thereby significantly hinder the hydrolysis by enzymes. Here, we studied the stability and hydrolyzability of environmentally relevant metal phytate complexes (Na, Ca, Mg, Cu, Zn, Al, Fe, Al/Fe, Mn, and Cd) under different pHs, presence of metal chelators, and thermal conditions. Our results show that the order of solubility of metal phytate complexes is as follows: i) for metal species: Na, Ca, Mg > Cu, Zn, Mn, Cd > Al, Fe, ii) under different pHs: pH 5.0 > pH 7.5), and iii) in the presence of chelators: EDTA> citric acid. Phytate-metal complexes are mostly resistant towards acid hydrolysis (except Al-phytate), and dry complexes are generally stable at high pressure and temperature under autoclave conditions (except Ca phytate). Inhibition of metal complex towards enzymatic hydrolysis by Aspergillus niger phytase was variable but found to be highest in Fe phytate complex. Strong chelating agents such as EDTA are insufficient for releasing metals from the complexes unless the reduction of metals (such as Fe) occurs first. The insights gained from this research are expected to contribute to the current understanding of the fate of phytate in the presence of various metals that are commonly present in agricultural soils.Mingjing SunZhongqi HeDeb P JaisiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0255787 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mingjing Sun Zhongqi He Deb P Jaisi Role of metal complexation on the solubility and enzymatic hydrolysis of phytate.
description	Phytate is a dominant form of organic phosphorus (P) in the environment. Complexation and precipitation with polyvalent metal ions can stabilize phytate, thereby significantly hinder the hydrolysis by enzymes. Here, we studied the stability and hydrolyzability of environmentally relevant metal phytate complexes (Na, Ca, Mg, Cu, Zn, Al, Fe, Al/Fe, Mn, and Cd) under different pHs, presence of metal chelators, and thermal conditions. Our results show that the order of solubility of metal phytate complexes is as follows: i) for metal species: Na, Ca, Mg > Cu, Zn, Mn, Cd > Al, Fe, ii) under different pHs: pH 5.0 > pH 7.5), and iii) in the presence of chelators: EDTA> citric acid. Phytate-metal complexes are mostly resistant towards acid hydrolysis (except Al-phytate), and dry complexes are generally stable at high pressure and temperature under autoclave conditions (except Ca phytate). Inhibition of metal complex towards enzymatic hydrolysis by Aspergillus niger phytase was variable but found to be highest in Fe phytate complex. Strong chelating agents such as EDTA are insufficient for releasing metals from the complexes unless the reduction of metals (such as Fe) occurs first. The insights gained from this research are expected to contribute to the current understanding of the fate of phytate in the presence of various metals that are commonly present in agricultural soils.
format	article
author	Mingjing Sun Zhongqi He Deb P Jaisi
author_facet	Mingjing Sun Zhongqi He Deb P Jaisi
author_sort	Mingjing Sun
title	Role of metal complexation on the solubility and enzymatic hydrolysis of phytate.
title_short	Role of metal complexation on the solubility and enzymatic hydrolysis of phytate.
title_full	Role of metal complexation on the solubility and enzymatic hydrolysis of phytate.
title_fullStr	Role of metal complexation on the solubility and enzymatic hydrolysis of phytate.
title_full_unstemmed	Role of metal complexation on the solubility and enzymatic hydrolysis of phytate.
title_sort	role of metal complexation on the solubility and enzymatic hydrolysis of phytate.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/e2bbc9ac8c41422c8e32770f1bfe5e3b
work_keys_str_mv	AT mingjingsun roleofmetalcomplexationonthesolubilityandenzymatichydrolysisofphytate AT zhongqihe roleofmetalcomplexationonthesolubilityandenzymatichydrolysisofphytate AT debpjaisi roleofmetalcomplexationonthesolubilityandenzymatichydrolysisofphytate
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Role of metal complexation on the solubility and enzymatic hydrolysis of phytate.

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