Impact of cultivar types and thermal processing methods on sweet potato metabolome, a comparative analysis via a multiplex approach of NIR and GC–MS based metabolomics coupled with chemometrics

Funding Number

47051

Funding Sponsor

Science and Technology Development Fund

Fourth Author's Department

Institute of Global Health & Human Ecology

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https://doi.org/10.1016/j.foodchem.2024.141125

All Authors

Rana M. Ibrahim, Mohamed S. Sedeek, Amr Abdel Wareth, Mohamed R. Khalifa, Abd El Monem Gendy, Mohamed A. Farag

Document Type

Research Article

Publication Title

Food Chemistry

Publication Date

1-15-2025

doi

10.1016/j.foodchem.2024.141125

Abstract

This study comprehensively analyzes the primary metabolites of sweet potato peels and pulps from four cultivars and assesses the impact of four different processing methods on pulp metabolome using a multiplex metabolomics approach of GC–MS and NIR. A total of 69 metabolites were identified. Beauregard cv. showed the highest sugar content (387.85 mg/g), whereas Sahrawy cv. was higher in alcohols (24.63 mg/g) and organic acids (2.98 mg/g). The chemometric analysis identified key markers that distinguished each cv. represented by its pulp, peel, and processed pulp. KEGG enrichment analysis pinpointed key metabolic pathways leading to the metabolic discrepancy of the specimens. Sugars were the most altered class by processing as manifested by a 5 to 11-fold increase, notably in the air-fried pulp. Air-frying also increased alcohol and organic acid contents. NIR analysis revealed that air-frying was the preferred method of processing, preserving the majority of pulp's metabolites, including β-carotene and phenolics.

Comments

Article. Record derived from SCOPUS.

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