Thu nhận carrageenan từ rong sụn (Kappaphycus alvarezii) bằng phương pháp chiết có hỗ trợ của sóng siêu âm
Abstract
This study aimed to develop and optimize a sustainable process for extracting carrageenan from the red seaweed Kappaphycus alvarezii using ultrasonic-assisted extraction (UAE). The effects of seaweed-to-solvent ratio (1:50, 1:100, 1:120 w/v), extraction temperature (40–80°C), and extraction time (30, 45, 60 min) were evaluated in terms of yield and Fourier Transform Infrared (FTIR) spectra. The highest yield of carrageenan (59.74 ± 8.15%) was achieved under UAE conditions of 60°C, 30 min, and a ratio of 1:100 (w/v). Besides, FTIR spectrum results confirmed the structure of carrageenan, and the ultrasonic-assisted method with optimal conditions was suitable for high-yield carrageenan extraction.
Tóm tắt
Mục tiêu của nghiên cứu này là xây dựng và tối ưu hóa quy trình chiết xuất carrageenan từ rong sụn Kappaphycus alvarezii bằng phương pháp chiết có hỗ trợ siêu âm (UAE). Ảnh hưởng của tỷ lệ nguyên liệu và dung môi (1:50, 1:100, 1:120 w/v), nhiệt độ chiết (40–80°C) và thời gian chiết (30, 45, 60 phút) được đánh giá thông qua hiệu suất thu nhận và phổ hồng ngoại biến đổi Fourier (FTIR). Kết quả cho thấy hiệu suất cao nhất (59,74 ± 8,15%) đạt được ở điều kiện 60°C, 30 phút với tỷ lệ 1:100 (w/v). Phân tích FTIR xác nhận đặc trưng cấu trúc của carrageenan, chứng minh rằng quy trình UAE tối ưu là phương pháp hiệu quả và phù hợp để thu nhận carrageenan với hiệu suất cao.
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