Effect of fibroin-based edible coatings enriched with mulberry leaf extract on postharvest quality and bioactive properties of table grapes
Journal of Food Measurement and Characterization, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s11694-026-04527-z
- Dergi Adı: Journal of Food Measurement and Characterization
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Food Science & Technology Abstracts, Natural Science Collection (ProQuest), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: Antidiabetic activity, Edible coating, Fibroin, Morus alba, Postharvest quality, Table grapes
- Bursa Uludağ Üniversitesi Adresli: Evet
Özet
Natural edible coatings offer a sustainable approach to extending fruit shelf life; however, their potential for antidiabetic bioactivities and impact on the glycemic response of fresh fruits remain largely unexplored. This study proposes a novel edible coating leveraging the biocompatibility and film-forming ability of fibroin, enriched with the bioactive potential of Morus alba leaf extract (MLE), to simultaneously enhance shelf life and impart antidiabetic functionality to table grapes. Following the optimization of MLE extraction via response surface methodology (maximum 1-deoxynojirimycin (DNJ) content: 6.8 mg/g DW), fibroin-based coatings (8%) containing 2–8% MLE were formulated and characterized for their antioxidant, in vitro antidiabetic, and antimicrobial activities before being applied to ‘Ata Sarısı’ and ‘Red Globe’ grape varieties. During 20 days of storage at 4 °C and 21 °C, the coatings effectively maintained postharvest quality by reducing weight loss and preserving fruit firmness compared to uncoated controls. Furthermore, MLE-enriched coatings significantly enhanced total phenolic content, antioxidant capacity, and in vitro α-amylase and α-glucosidase inhibition, while effectively reducing the in vitro glycemic index (GI) and microbial growth, particularly under cold storage. Among the formulations, the RG-8-4 treatment exhibited the most potent effects (TPC: 225.44 mg GAE/100 g; CUPRAC: 73.24 µmol TE/100 g; α-amylase inhibition: 42.37%; α-glucosidase inhibition: 53.65%; and GI: 46.25). These findings demonstrate that fibroin-based edible coatings enriched with MLE represent a promising functional solution for extending shelf life while developing fresh fruits with significant antidiabetic and antimicrobial potential.