Preparation, Identifi cation and Antioxidant Properties of Black-Bone Silky Fowl (Gallus gallus domesticus Brisson) Iron(II)-Oligopeptide Chelate

Black-bone silky fowl iron(II)-oligopeptide chelate was synthesized from iron(II) solution and the black-bone silky fowl oligopeptide, which was extracted from the muscle protein of black-bone silky fowl (Gallus gallus domesticus Brisson). Orthogonal array analysis was used to determine the optimal...

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Veröffentlicht in:Food technology and biotechnology 2016-04, Vol.54 (2), p.164-164
Hauptverfasser: Pan, Huanglei, Song, Shasha, Ma, Qiuyue, Wei, Hui, Ren, Difeng, Lu, Jun
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container_issue 2
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creator Pan, Huanglei
Song, Shasha
Ma, Qiuyue
Wei, Hui
Ren, Difeng
Lu, Jun
description Black-bone silky fowl iron(II)-oligopeptide chelate was synthesized from iron(II) solution and the black-bone silky fowl oligopeptide, which was extracted from the muscle protein of black-bone silky fowl (Gallus gallus domesticus Brisson). Orthogonal array analysis was used to determine the optimal conditions for the iron(II)-oligopeptide chelate preparation. Ultraviolet-visible (UV-Vis) spectroscopy, electron microscopy, and Fourier transform infrared (FTIR) spectroscopy were used to identify the structure of iron(II)-oligopeptide chelate. 2-Diphenyl-1-picrylhydrazyl (DPPH) and superoxide radical scavenging assays were performed to compare the antioxidant abilities of the black-bone silky fowl oligopeptide and iron(II)-oligopeptide chelate. The optimal conditions for iron(II)-oligopeptide chelate preparation were 4 % of the black-bone silky fowl oligopeptide and a ratio of the black-bone silky fowl oligopeptide to FeCl^sub 2^·4H^sub 2^O of 5:1 at pH=4. Under these conditions, the chelation rate was (84.9±0.2) % (p
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Orthogonal array analysis was used to determine the optimal conditions for the iron(II)-oligopeptide chelate preparation. Ultraviolet-visible (UV-Vis) spectroscopy, electron microscopy, and Fourier transform infrared (FTIR) spectroscopy were used to identify the structure of iron(II)-oligopeptide chelate. 2-Diphenyl-1-picrylhydrazyl (DPPH) and superoxide radical scavenging assays were performed to compare the antioxidant abilities of the black-bone silky fowl oligopeptide and iron(II)-oligopeptide chelate. The optimal conditions for iron(II)-oligopeptide chelate preparation were 4 % of the black-bone silky fowl oligopeptide and a ratio of the black-bone silky fowl oligopeptide to FeCl^sub 2^·4H^sub 2^O of 5:1 at pH=4. Under these conditions, the chelation rate was (84.9±0.2) % (p&lt;0.05), and the chelation yield was (40.3±0.1) % (p&lt;0.05). The structures detected with UV-Vis spectroscopy, electron microscopy and FTIR spectra changed significantly after chelation, suggesting that Fe(II) ions formed coordinate bonds with carboxylate (-RCOO^sup -^) and amino (-NH^sub 2^) groups in the oligopeptides, confirming that this is a new oligopeptide-iron chelate. 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Orthogonal array analysis was used to determine the optimal conditions for the iron(II)-oligopeptide chelate preparation. Ultraviolet-visible (UV-Vis) spectroscopy, electron microscopy, and Fourier transform infrared (FTIR) spectroscopy were used to identify the structure of iron(II)-oligopeptide chelate. 2-Diphenyl-1-picrylhydrazyl (DPPH) and superoxide radical scavenging assays were performed to compare the antioxidant abilities of the black-bone silky fowl oligopeptide and iron(II)-oligopeptide chelate. The optimal conditions for iron(II)-oligopeptide chelate preparation were 4 % of the black-bone silky fowl oligopeptide and a ratio of the black-bone silky fowl oligopeptide to FeCl^sub 2^·4H^sub 2^O of 5:1 at pH=4. Under these conditions, the chelation rate was (84.9±0.2) % (p&lt;0.05), and the chelation yield was (40.3±0.1) % (p&lt;0.05). 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Orthogonal array analysis was used to determine the optimal conditions for the iron(II)-oligopeptide chelate preparation. Ultraviolet-visible (UV-Vis) spectroscopy, electron microscopy, and Fourier transform infrared (FTIR) spectroscopy were used to identify the structure of iron(II)-oligopeptide chelate. 2-Diphenyl-1-picrylhydrazyl (DPPH) and superoxide radical scavenging assays were performed to compare the antioxidant abilities of the black-bone silky fowl oligopeptide and iron(II)-oligopeptide chelate. The optimal conditions for iron(II)-oligopeptide chelate preparation were 4 % of the black-bone silky fowl oligopeptide and a ratio of the black-bone silky fowl oligopeptide to FeCl^sub 2^·4H^sub 2^O of 5:1 at pH=4. Under these conditions, the chelation rate was (84.9±0.2) % (p&lt;0.05), and the chelation yield was (40.3±0.1) % (p&lt;0.05). The structures detected with UV-Vis spectroscopy, electron microscopy and FTIR spectra changed significantly after chelation, suggesting that Fe(II) ions formed coordinate bonds with carboxylate (-RCOO^sup -^) and amino (-NH^sub 2^) groups in the oligopeptides, confirming that this is a new oligopeptide-iron chelate. The iron(II)-oligopeptide chelate had stronger scavenging activity towards DPPH and superoxide radicals than did the black-bone silky fowl oligopeptide.</abstract><cop>Zagreb</cop><pub>Sveuciliste u Zagrebu, Prehramheno-Biotehnoloski Fakultet</pub><doi>10.17113/ftb.54.02.16.4166</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record>
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subjects Amino acids
Antioxidants
Efficiency
Fourier transforms
Gallus gallus domesticus
Iron
Microscopy
Peptides
R&D
Research & development
Spectrum analysis
title Preparation, Identifi cation and Antioxidant Properties of Black-Bone Silky Fowl (Gallus gallus domesticus Brisson) Iron(II)-Oligopeptide Chelate
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