Foods (Apr 2025)

A Functional Beverage from Coffee and Olive Pomace: Polyphenol-Flavonoid Content, Antioxidant, Antihyperglycemic Properties, and Mouse Behavior

  • Analy Aispuro-Pérez,
  • Fernando Javier Pedraza-Leyva,
  • Alicia Ochoa-Acosta,
  • Mayra Arias-Gastélum,
  • Feliznando Isidro Cárdenas-Torres,
  • Bianca Anabel Amezquita-López,
  • Emiliano Terán,
  • Emmanuel Aispuro-Hernández,
  • Miguel Ángel Martínez-Téllez,
  • Roberto J. Avena-Bustillos,
  • Selina C. Wang,
  • Eli Terán-Cabanillas,
  • Ulises Osuna-Martínez

DOI
https://doi.org/10.3390/foods14081331
Journal volume & issue
Vol. 14, no. 8
p. 1331

Abstract

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Background: Coffee is widely consumed worldwide and is rich in polyphenols with antioxidant properties linked to a reduced risk of metabolic and cardiovascular diseases. Olive pomace (OP), a by-product of olive oil production, contains phenolic compounds with cardioprotective effects but is often discarded. Combining it with coffee could enhance health benefits and promote sustainability. Methods: Soluble solids, total phenols, flavonoids, and antioxidant capacity (DPPH• scavenging activity) were analyzed in C-OP at 5%, 10%, 15%, and 20% OP concentrations. The C-OP 10% brew was selected for further evaluation with α-amylase inhibition and a 14-day pilot study in a murine model, evaluating weight, food and liquid intake, and behavior, compared to a control group. Results: Adding OP powder to ground coffee increased the total phenol content in the brews. The highest antioxidant activity (6.62–8.17 mmol TE/L) was found in those brewed from 10%, 15%, and 20% concentrations. The C-OP 10% brew had the highest acceptance in mice, with increased consumption, greater exploratory behavior, and reduced resting time. It also showed 30.5% α-amylase inhibition at 200 µg/mL. Conclusions: The incorporation of OP into coffee enhances its total phenol content and antioxidant capacity. The C-OP 10% brew showed optimal bioactivity, suggesting its potential as a functional beverage for metabolic health.

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