ArticleFood chemistry: X2025
Grape stems as sources of tryptophan and selenium: Functional properties and antioxidant potential.
Article in Food chemistry: X, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed.
- Gamma irradiation as a grape pomace stabilisation treatment: Assessment of phenolic and mineral preservation.Food chemistry: X · 2026Article
- Inhibitory Effects of Grape Stem Extracts From Douro Varieties on Skin-Aging Enzymes: A Sustainable Source of Cosmeceutical Agents.Journal of cosmetic dermatology · 2026Article
- The Role of Hepatic SIRT1: From Metabolic Regulation to Immune Modulation and Multi-target Therapeutic Strategies.Journal of clinical and translational hepatology · 2025Review
- Targeted Recovery of Phenolic Antioxidants from Grape Stems: A Sequential Approach.Molecules (Basel, Switzerland) · 2025Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Douro Demarcated Region's winery industry produces million tonnes of by-products annually, making their reuse essential to minimize environmental impact. Grape stems, rich in bioactive compounds and nutrients, have demonstrated potential health benefits. This study analysed four red grape stems from the Douro region to assess their nutritional value and potential health benefit. Tryptophan, selenium, and phenolic compounds, which regulate cognitive functions, protein and enzyme synthesis, and antioxidant processes, were analysed. Among the varieties, Touriga Nacional exhibited the highest levels of selenium, phenolics, and antioxidant capacity. Tinta Amarela and Touriga Nacional exhibited higher tryptophan levels. Moreover, proanthocyanidins, phenolic acids, flavonols, and anthocyanins were identified in all the varieties analysed. These findings highlight grape stems, particularly Touriga Nacional, as valuable sources of amino acids and bioactive compounds, offering potential in mood regulation, protein synthesis, and antioxidant defence. This research emphasizes their value to reduce waste, generating revenue, and promoting environmental sustainability.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.