Are Citric Acid-Iron II Complexes True Chelates or Just Physical Mixtures and How to Prove This?

柠檬酸 螯合作用 化学 傅里叶变换红外光谱 摩尔比 红外光谱学 吸收(声学) 无机化学 光谱学 二聚体 核化学 有机化学 材料科学 催化作用 化学工程 工程类 复合材料 物理 量子力学
作者
Ghadeer Mattar,Amira Haddarah,Joseph Haddad,Montserrat Pujolà,Francesc Sepulcre
出处
期刊:Foods [Multidisciplinary Digital Publishing Institute]
卷期号:12 (2): 410-410
标识
DOI:10.3390/foods12020410
摘要

Although mineral chelates are widely produced to be used as food fortifiers, the proof that these complexes are chelates is still missing. In our present work, iron II complexes using citric acid in different ratios are produced, and the occurrence of chelation is investigated along with its behavior according to a molar ratio between the ligand and the mineral. High performance liquid chromatography (HPLC), flame atomic absorption spectroscopy (FAAS), ultraviolet-visible spectroscopy (UV-Vis), Fourier-transform infrared (FTIR), and near infrared spectroscopy (NIR) were used for a non-structural characterization of these complexes. In contrast to published work, our findings show that the chelation of citric acid is achieved in the liquid form and at a low pH and that the molar ratio is very important in setting the direction of the reaction, either toward chelation or dimer formation. The ratio citric acid:iron 1:4 seems to be the most convenient ratio in which no free citric acid remains in the solution, while the 1:3 ratio behaves differently, requiring further investigations by such techniques as extended X-ray absorption fine structure spectroscopy (EXAFS), among others, in order to deeply identify the structural organization occurring in this ratio. NIR, extensively used in industries, proved to be very useful in the demonstration and characterization of chelates. These findings are particularly advantageous for pharmaceutical and food industries in offering an innovative competent fortifying agent to be used in combatting iron deficiency.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
少夫人完成签到,获得积分10
刚刚
zwj003完成签到,获得积分0
1秒前
英俊的铭应助Yun采纳,获得10
2秒前
2秒前
lalaland完成签到,获得积分10
2秒前
3秒前
3秒前
鹿立轩完成签到,获得积分10
5秒前
6秒前
Shawn完成签到,获得积分10
6秒前
小蘑菇应助哈哈哈采纳,获得10
6秒前
7秒前
8秒前
李爱国应助恋雅颖月采纳,获得10
8秒前
9秒前
留白发布了新的文献求助10
9秒前
fdkufghkd完成签到,获得积分10
12秒前
13秒前
13秒前
懵懂的幻桃完成签到 ,获得积分10
13秒前
flyfish完成签到,获得积分10
14秒前
14秒前
上官若男应助斯文莺采纳,获得30
15秒前
16秒前
16秒前
17秒前
Yun发布了新的文献求助10
17秒前
17秒前
17秒前
kyra发布了新的文献求助10
18秒前
xiaoze发布了新的文献求助10
18秒前
19秒前
19秒前
小蘑菇应助Yana1311采纳,获得10
20秒前
20秒前
傻傻的小刺猬完成签到,获得积分10
20秒前
20秒前
20秒前
ColdSunWu发布了新的文献求助10
21秒前
小坤同学发布了新的文献求助10
21秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988786
求助须知:如何正确求助?哪些是违规求助? 3531116
关于积分的说明 11252493
捐赠科研通 3269766
什么是DOI,文献DOI怎么找? 1804771
邀请新用户注册赠送积分活动 881870
科研通“疑难数据库(出版商)”最低求助积分说明 809021