Preparation and characterization of glutamate iron chelate

doi:10.3969/j.issn.1000-1565.2023.05.005

Abstract

Abstract: Glutamic acid(Glu)was reacted with trivalent iron ions(Fe³⁺)to prepare glutamate iron chelate ［Glu-Fe(Ⅲ)］. Glu-Fe(Ⅲ)was characterized by FT-IR, DSC, and TGA analysis. The Fe³⁺ content in Glu-Fe(Ⅲ)was determined by an indirect iodometric method and identified as an evaluation index for optimizing the preparation condition of Glu-Fe(Ⅲ). The effects of molar ratio of glutamic acid to iron, pH, time and temperature on the iron content of Glu-Fe(Ⅲ)were investigated by single factor method and Box-Benhnken design(BBD). The optimum preparation condition of Glu-Fe(Ⅲ)was Glu/Fe³⁺ molar ratio of 3∶5, pH 4.8, 50 ℃ and 3 h, and the iron content of Glu-Fe(Ⅲ)prepared under the optimized conditions was 19.91%. Glu-Fe(Ⅲ)could be a new iron and glutamic acid nutrient supplement.

Key words: glutamate iron chelate, preparation, Box-Benhnken design, characterization, nutrient supplements

CLC Number:

O634

LIU Xinshuo,WANG Zhen,LI Qing,YANG Wenzhi,LI Haiying. Preparation and characterization of glutamate iron chelate[J]. Journal of Hebei University(Natural Science Edition), 2023, 43(5): 476-483.

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