A novel edible biocomposite coating based on alginate from the brown seaweed Dictyota mertensii loaded with beeswax nanoparticles extends the shelf life of yellow passion fruit

• Published in: International journal of biological macromolecules 2025-01, Vol.284 (Pt 1), p.138051, Article 138051
• Main Authors: Queiroz, Luiz Paulo de Oliveira, Aroucha, Edna Maria Mendes, da Silva, Wedson Aleff Oliveira, de Almeida, José Gustavo Lima, Soares, Lucas Perdigão, de Lima Leite, Ricardo Henrique
• Format: Article
• Language: English
• Subjects: alginates; Alginates - chemistry; Alginates - pharmacology; antioxidant activity; Antioxidants - chemistry; Antioxidants - pharmacology; ascorbic acid; Ascorbic Acid - chemistry; beeswax; biocomposites; Biopolymers; cell respiration; climacteric fruits; color; contact angle; Dictyota; Edible Films; Edible fruit coatings; Food Preservation - methods; Food Storage - methods; Fruit - chemistry; glycerol; nanoparticles; Nanoparticles - chemistry; Passiflora - chemistry; Passiflora edulis f. flavicarpa; permeability; Phaeophyceae - chemistry; phenolic compounds; polysorbates; Postharvest quality preservation; pulp; Seaweed - chemistry; sensory evaluation; shelf life; solubility; titratable acidity; water content; water vapor; Waxes - chemistry; weight loss
• ISSN: 0141-8130; 1879-0003; 1879-0003
• DOI: 10.1016/j.ijbiomac.2024.138051

In this study, an edible biocomposite coating of alginate extracted from the brown seaweed Dictyota mertensii was loaded with beeswax nanoparticles (BDMAB) to extend the shelf life of yellow passion fruit (Passiflora edulis f. flavicarpa). The films were characterized by morphology, moisture content, contact angle, water vapor permeability, solubility, and optical and mechanical properties. Using a 4 × 6 factorial design, coated fruit was evaluated during six storage intervals (0, 2, 4, 6, 8, 10 days) at 22.5 ± 0.5 °C and 65 ± 5 % RH, focusing on respiration rate, weight loss, peel thickness and color, pulp yield and color, soluble solids, titratable acidity, ascorbic acid, phenolics, antioxidant capacity, and sensory acceptance. The BDMAB coating, composed of 67.9 % (w/w) ADM (bleached), 5 % (w/w) glycerol, 8.5 % (w/w) beeswax, and 18.6 % (w/w) Tween 80, significantly (p