Foods and Raw Materials Foods and Raw Materials Foods and Raw Materials 2308-4057 2310-9599 54999 10.21603/2308-4057-2023-1-553 Research Article Research Article Research Article Preparation of sodium alginate films incorporated with hydroalcoholic extract of Macrocystis pyrifera L. Preparation of sodium alginate films incorporated with hydroalcoholic extract of Macrocystis pyrifera L. https://orcid.org/0000-0003-2434-9197 Ramos Judith Ramos Judith https://orcid.org/0000-0001-9499-3792 Villacrés Nelson Adrián Villacrés Nelson Adrián https://orcid.org/0000-0002-5186-3039 Cavalheiro Éder Tadeu Gomes Cavalheiro Éder Tadeu Gomes https://orcid.org/0000-0002-9533-2133 Alarcón Hugo A. Alarcón Hugo A. https://orcid.org/0000-0001-7741-3207 Valderrama Ana C. Valderrama Ana C. ana.valderrama.n@uni.edu.pe National University of Engineering Lima Перу National University of Engineering Lima Peru National University of Engineering Lima Перу National University of Engineering Lima Peru University of São Paulo São Paulo Бразилия University of São Paulo São Paulo Brazil National University of Engineering Lima Перу National University of Engineering Lima Peru National University of Engineering Lima Перу National University of Engineering Lima Peru 17 03 2023 17 03 2023 11 1 64 71 02 07 2022 09 08 2022 https://jfrm.ru/en/issues/20672/20814/

Agroindustry needs novel materials to replace synthetic plastics. This article introduces sodium alginate films with antioxidant properties. The films, which were incorporated with hydroalcoholic extract of Macrocystis pyrifera L., were tested on sliced Hass avocados. The research featured sodium alginate films incorporated with hydroalcoholic extracts of M. pyrifera. Uncoated avocado halves served as control, while the experimental samples were covered with polymer film with or without hydroalcoholic extract. A set of experiments made it possible to evaluate the effect of the extracts on polymeric matrices, release kinetics, and sensory profile of halved Hass avocados. A greater concentration of hydroalcoholic extracts increased the content of phenolic compounds and their antioxidant activity. As a result, the bands in the carboxylate groups of sodium alginate became more intense. Crystallinity decreased, whereas opacity and mass loss percentage increased, and conglomerates appeared on the surface of the films. These processes fit the KorsmeyerPeppas kinetic model because they resulted from a combination of diffusion and swelling mechanisms in the films. The films incorporated with hydroalcoholic extract of M. pyrifera proved to be an effective alternative to traditional fruit wrapping materials.

Agroindustry needs novel materials to replace synthetic plastics. This article introduces sodium alginate films with antioxidant properties. The films, which were incorporated with hydroalcoholic extract of Macrocystis pyrifera L., were tested on sliced Hass avocados. The research featured sodium alginate films incorporated with hydroalcoholic extracts of M. pyrifera. Uncoated avocado halves served as control, while the experimental samples were covered with polymer film with or without hydroalcoholic extract. A set of experiments made it possible to evaluate the effect of the extracts on polymeric matrices, release kinetics, and sensory profile of halved Hass avocados. A greater concentration of hydroalcoholic extracts increased the content of phenolic compounds and their antioxidant activity. As a result, the bands in the carboxylate groups of sodium alginate became more intense. Crystallinity decreased, whereas opacity and mass loss percentage increased, and conglomerates appeared on the surface of the films. These processes fit the KorsmeyerPeppas kinetic model because they resulted from a combination of diffusion and swelling mechanisms in the films. The films incorporated with hydroalcoholic extract of M. pyrifera proved to be an effective alternative to traditional fruit wrapping materials.

 Sodium alginate films hydroalcoholic extracts Macrocystis pyrifera coating storage avocado Sodium alginate films hydroalcoholic extracts Macrocystis pyrifera coating storage avocado The authors are grateful for the financial support provided by the Peruvian government funding through its PROCIENCIA/WORLD BANK program, project code N°01-2018-FONDECYTBM-IADTUM. The authors are grateful for the financial support provided by the Peruvian government funding through its PROCIENCIA/WORLD BANK program, project code N°01-2018-FONDECYTBM-IADTUM.

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