Milk authentication and discrimination via metal content clustering – A case of comparing milk from Malaysia and selected countries of the world

Zain, S.M. and Behkami, S. and Bakirdere, S. and Koki, I.B. (2016) Milk authentication and discrimination via metal content clustering – A case of comparing milk from Malaysia and selected countries of the world. Food Control, 66. pp. 306-314. ISSN 0956-7135

Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.foodcont.2016.02.015

Abstract

Authenticity is an important issue nowadays as humans are concerned about the safety and quality of food they consume. In this regard, determining the geographical origin of milks using their elemental composition is of high importance. Therefore, we have studied the elemental composition of milk from various sources within a tropical region where there is no dramatic change in season. 24 essential and trace elements in 231 raw and factory cow milk samples were studied. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) reveal that Malaysian milks are well separated from milk samples collected from selected countries based on their elemental compositions. However, it is noted that only 11 elements (Mg, Na, Ca, Ba, Cu, Fe, Zn, K, Se, Mo and Mn) are detected out of the 24 analyzed. Based on the observations from PCA. Between the detected elements, Ca, Na, Fe, Zn, Mn, K, Ba and Mg are observed to be the discriminating factors for the overall separation of Malaysian milk samples from milks of selected regions of the world. Toxic elements are not detected in any of the milk samples studied. NIST/Milk SRM 1849a-Infant/Adult nutritional formula, USDA was used to verify the accuracy of the methodology. Our study shows clear geographical origin clustering which map to the authenticity of milk and serve as a parameter for quality control of milk.

Item Type: Article
Uncontrolled Keywords: Milk authenticity; Essential and trace elements; Microwave digestion; Inductively coupled plasma mass spectrometry; Chemometrics; Peninsular Malaysia
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 16 May 2018 08:04
Last Modified: 16 May 2018 08:04
URI: http://eprints.um.edu.my/id/eprint/18706

Actions (login required)

View Item View Item