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The results of the database search.
| Key Words (in Title) | Year(s) | ScienceDirect * | PubMed * | Google Scholar ** |
|---|---|---|---|---|
| Functional food | total | 640 | 496 | 4670 |
| 2000–2022 | 599 | 477 | 4480 | |
| Functional food AND consumer | total | 26 | 5 | 94 |
| 2000–2022 | 26 | 5 | 80 |
* Automatic advanced search: only research papers. ** After advanced searching (years of publication, “functional food and consumer” in the title), research papers were manually chosen.
