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Open AccessArticle

Use of Chemometrics for Correlating Carobs Nutritional Compositional Values with Geographic Origin

1
State General Laboratory, P.O. Box 28648, 2081 Nicosia, Cyprus
2
Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
*
Authors to whom correspondence should be addressed.
Metabolites 2020, 10(2), 62; https://doi.org/10.3390/metabo10020062
Received: 18 December 2019 / Revised: 31 January 2020 / Accepted: 5 February 2020 / Published: 10 February 2020
(This article belongs to the Special Issue Metabolomics Methodologies and Applications)
Carobs unique compositional and biological synthesis enables their characterization as functional foods. In the present study, 76 samples derived from fruit and seeds of carobs, with origin from the countries of the Mediterranean region (Cyprus, Greece, Italy, Spain, Turkey, Jordan and Palestine) were analyzed for their nutritional composition, in order to identify potential markers for their provenance and address the carobs’ authenticity issue. Moisture, ash, fat, proteins, sugars (fructose, glucose, sucrose), dietary fibers and minerals (Ca, K, Mg, Na, P, Cu, Fe, Mn, Zn) were estimated following official methods. Due to the large number of data (76 samples × 17 parameters × 7 countries), chemometric techniques were employed to process them and extract conclusions. The samples of different geographical origin were discriminated with 79% success in total. The carobs from Cyprus, Italy and Spain were correctly classified without error. The main discriminators were found to be the dietary fibers, the carbohydrates and Cu, Zn and Mn, which emphasize their specific nutritional added value to the product and the country of origin impact. The results suggest that the proposed analytical approach is a powerful tool that enables the discrimination of carobs based on their country of origin. This research contributes to authenticity of carobs, adding value to local products. View Full-Text
Keywords: nutrients; food constituents; differential characteristics; multivariate data analysis nutrients; food constituents; differential characteristics; multivariate data analysis
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MDPI and ACS Style

Kokkinofta, R.; Yiannopoulos, S.; Stylianou, M.A.; Agapiou, A. Use of Chemometrics for Correlating Carobs Nutritional Compositional Values with Geographic Origin. Metabolites 2020, 10, 62. https://doi.org/10.3390/metabo10020062

AMA Style

Kokkinofta R, Yiannopoulos S, Stylianou MA, Agapiou A. Use of Chemometrics for Correlating Carobs Nutritional Compositional Values with Geographic Origin. Metabolites. 2020; 10(2):62. https://doi.org/10.3390/metabo10020062

Chicago/Turabian Style

Kokkinofta, Rebecca; Yiannopoulos, Stelios; Stylianou, Marinos A.; Agapiou, Agapios. 2020. "Use of Chemometrics for Correlating Carobs Nutritional Compositional Values with Geographic Origin" Metabolites 10, no. 2: 62. https://doi.org/10.3390/metabo10020062

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