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. 2022 Jul 18;37(1):1974–1986. doi: 10.1080/14756366.2022.2097445

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© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 4. — Heatmap represents the relative abundance of volatile metabolites extracted from anise and star anise fruits. Hierarchical clustering was done using Pearson’s correlation and average linkage. Heatmap colours represent log₁₀ and Pareto-scaled values of relative metabolite abundance as indicated in the colour key. SEA: solvent extraction anise; MA: microwave extraction anise; HDA: hydro-distillation anise; SESA: solvent extraction star anise; MSA: microwave extraction star anise; HDSA: hydro-distillation star anise.