Phát triển màng polyme sinh học tích hợp nanocurcumin nhằm tăng cường độ bền và khả năng theo dõi sự biến đổi pH
DOI:
https://doi.org/10.54939/1859-1043.j.mst.110.2026.74-83Từ khóa:
Màng phân huỷ sinh học; Nanocurcumin; Chỉ thị pH; Bao bì thông minh.Tóm tắt
Nghiên cứu này phát triển các màng biopolymer thông minh từ chitosan (CS), carboxymethyl cellulose (CMC) và pectin (Pec) kết hợp với nanocurcumin (NCur). Các phân tích FE-SEM và ATR-FTIR xác nhận việc tích hợp NCur đã tạo ra cấu trúc đặc khít hơn, giúp cải thiện độ bền kéo và độ giãn dài lần lượt lên tới 17% và 20%. Bên cạnh việc giảm độ ẩm và tăng gấp đôi hoạt tính chống oxy hóa, màng còn thể hiện khả năng chuyển màu rõ rệt theo pH từ vàng (acid) sang nâu đỏ (kiềm). Thử nghiệm bảo quản thịt bò cho thấy màng theo dõi chính xác quá trình hư hỏng thông qua sự thay đổi màu sắc trong hai ngày. Kết quả khẳng định tiềm năng lớn của màng tích hợp NCur như một giải pháp bao bì thông minh giúp bảo quản chủ động và chỉ thị độ tươi thực phẩm.
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