Elemental profiling and geographical differentiation of Ethiopian coffee samples through inductively coupled plasma-optical emission spectroscopy (ICP-OES), ICP-mass spectrometry (ICP-MS) and direct mercury analyzer (DMA)

被引：79

作者：

Habte, Girum ^{[1
,2
]}

Hwang, In Min ^{[3
]}

Kim, Jae Sung ^{[1
]}

Hong, Joon Ho ^{[1
]}

Hong, Young Sin ^{[1
]}

Choi, Ji Yeon ^{[1
]}

Nho, Eun Yeong ^{[1
]}

Jamila, Nargis ^{[1
]}

Khan, Naeem ^{[4
]}

Kim, Kyong Su ^{[1
]}

机构：

[1] Chosun Univ, Dept Food & Nutr, Gwangju 61452, South Korea

[2] Ethiopian Inst Agr Res, Addis Ababa, Ethiopia

[3] World Inst Kimchi, Gwangju 503360, South Korea

[4] Kohat Univ Sci & Technol, Dept Chem, Kohat 26000, Khyber Pakhtunk, Pakistan

来源：

FOOD CHEMISTRY | 2016年 / 212卷

基金：

新加坡国家研究基金会;

关键词：

Ethiopia; Coffee; Trace elements; Inductively coupled plasma-optical; emission spectroscopy; Provenance; Linear discriminant analysis; TOXIC HEAVY-METALS; TRACE-ELEMENTS; GREEN COFFEE; ORIGIN; YOGURTS;

D O I：

10.1016/j.foodchem.2016.05.178

中图分类号：

O69 [应用化学];

学科分类号：

070301 [无机化学];

摘要：

This study was aimed to establish the elemental profiling and provenance of coffee samples collected from eleven major coffee producing regions of Ethiopia. A total of 129 samples were analyzed for forty-five elements using inductively coupled plasma (ICP)-optical emission spectroscopy (OES), ICP-mass spectrometry (MS) and direct mercury analyzer (DMA). Among the macro elements, K showed the highest levels whereas Fe was found to have the lowest concentration values. In all the samples, Ca, K, Mg, P and S contents were statistically significant (p < 0.05). Micro elements showed the concentrations order of: Mn > Cu > Sr > Zn > Rb > Ni > B. Contents of the trace elements were lower than the permissible standard values. Inter-regions differentiation by cluster analysis (CA), linear discriminant analysis (LDA) and principal component analysis (PCA) showed that micro and trace elements are the best chemical descriptors of the analyzed coffee samples. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：512 / 520

页数：9

共 40 条

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[2]

Abebe M., 1998, Nature and Management of Ethiopian Soils

[3]

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