Work

Optimizing Extraction of Bioactive Compounds from Grape Pomace to Produce an Eco-Friendly Smart Straw

Year: 2026

Type: article

Abstract: Grape pomace (GP) is a byproduct rich in bioactive compounds. This study optimized the extraction of these compounds using a Central Composite Rotational Design (CCRD 22), evaluating temperature (41–69 °C) and time (0.8–3.2 h). The optimized extract (GPE) showed high phenolic content (163.99 mg GAE/L), anthocyanins (136.46 mg C3GE/L), and antioxidant activity (69.21% DPPH). GPE was incorporated into babassu mesocarp starch (BS) films, producing an active smart film (GPE-BS) that changed color at extreme pH (2 and 13). The GPE-BS film also showed improved hydrophobicity, antioxidant activity, and elongation at break compared to BS films (control). When tested as a straw for sugar-free cola, the film maintained structural integrity for 2 h. Thus, GPE-BS films are promising for smart food packaging or as edible straws.

Source: ACS Omega

DOI: 10.1021/acsomega.6c05389

Authors: Luis Fernando Zitei-Baptista, Maisa Mitiko Takahashi, Ivone Yanira Choquetico Iquiapaza, Delia Rita Tapia-Blácido

Institutions: SUPERA Park of Innovation and Technology of Ribeirão Preto, Clinics Hospital of Ribeirão Preto

Language: English

Topic: Nanocomposite Films for Food Packaging

Subfield: Biomaterials

Field: Materials Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Zero hunger

Open Access status: gold

Estimated APC paid: $1,935