Speciation of essential nutrient trace elements in coconut water
نویسندگان
چکیده
Coconut water (Cocos Nucifera) is shown to be a source of essential elements present in the form low-molecular weight stable complexes known for their bio-availability. The total element concentrations were range 0.2–2.7, 0.3–1, 3–14 and 0.5–2 ppm Fe, Cu, Mn, Zn, respectively, varied as function origin nut its maturity. Speciation was investigated by size-exclusion chromatography - inductively coupled plasma mass spectrometry (ICP MS), hydrophilic interaction liquid (HILIC) electrospray-Orbitrap MS. metal species identified included: iron with citrate malate: FeIII(Cit)3(Mal), FeIII(Cit)2(Mal)2, FeIII(Mal)2, glutamine: FeIII(Glu)2 nicotianamine: FeII(NA); copper phenylanine: CuII(Phe)2 CuII(Phe)3 CuII(NA); zinc citrate: ZnII(Cit)2 nicotianamine ZnII(NA) manganese complex asparagine MnII(Asp)2. contributions individual could estimated HILIC – ICP
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ژورنال
عنوان ژورنال: Food Chemistry
سال: 2021
ISSN: ['1873-7072', '0308-8146']
DOI: https://doi.org/10.1016/j.foodchem.2020.127680