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Open Access Element analysis of House- and Cave-EBN (edible bird's nest) traceability by inductively coupled plasma-mass spectrometry (ICP-MS) integrated with chemo-metrics

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Edible bird's nest (EBN) is a high-value health-promoting tonic from swiftlets. However, cheap House-EBN is usually masqueraded as expensive Cave-EBN for profiteering. Efficient scientific means are required to trace Cave-EBN. After microwave digestion of EBN lyophilizing powder, its mineral element compositions were examined by using inductively coupled plasma-mass spectrometry (ICP-MS). Influences of two key factors, production environment and country, on the distribution of 21 elements were analyzed. Linear Discriminant Analysis (LDA) coupled with leave-one out cross validation was applied for modeling. Classifier generalization performance was assessed by the Confusion Matrix approach. ICP-MS identified the presence of 21 macro and micro elements with contributions of 99.65% and 0.35%, respectively. A two-way ANOVA established that B, Na, K, Ca, Mn, Cu, Sr, and Cd were the production-environment-specific elements. Among four different combinations based on three potential variables (Ca, Na, and Sr), Na/Ca was identified as the best among them having 100% specificity on tracing Cave-EBN. In conclusion, EBN was a good mineral element source. The methodology of integration of ICP-MS with chemo-metrics proved to be a powerful tool for tracing Cave-EBN.

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Keywords: HOUSE- AND CAVE-EDIBLE BIRD'S NEST (EBN); INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY (ICP-MS); MINERAL ELEMENT; PREDICTIVE MODEL; TRACEABILITY

Document Type: Research Article

Publication date: July 1, 2020

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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