化学
溶解度
化学计量学
消化(炼金术)
南极磷虾
磷虾
谷氨酸
生物化学
核化学
氨基酸
吸收(声学)
色谱法
有机化学
生物
材料科学
渔业
复合材料
作者
Shengjie Hu,Lei Qin,Di Wang,Shuyue Zhang,Na Sun
出处
期刊:Food & Function
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:12 (18): 8615-8625
被引量:4
摘要
Three peptides containing three glutamic acid (Glu) residues at different positions derived from Antarctic krill were obtained to investigate their iron-binding properties, digestive stability, and effectiveness on enhancing iron solubility and absorption. Results indicated that Fe2+ bound to the carbonyl, carboxyl, or hydroxyl groups of DELEDSLER, EEEFDATR, and DTDSEEEIR at stoichiometric ratios of 0.453, 0.466, and 0.490, respectively. DTDSEEEIR with three consecutive Glu in the middle of the sequence possessed higher iron-binding ability and iron release potential than EEEFDATR with three consecutive Glu in the N-terminal, and DELEDSLER with three discontinuous Glu showed the lowest values. Although EEEFDATR showed remarkably lower digestion stability than DTDSEEEIR, the effect of EEEFDATR-iron on iron solubility and absorption was comparable to that of DTDSEEEIR-iron, but better than that of DELEDSLER-iron and FeSO4. Thus, peptides with consecutive Glu have the potential as an effective iron carrier to improve iron absorption.
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