Nam, H.-B.; Lee, K.H.; Yoo, H.Y.; Park, C.; Lim, J.-M.; Lee, J.H. Rapid and High-Yield Recovery of Sodium Alginate from Undaria pinnatifida via Microwave-Assisted Extraction. Processes2024, 12, 208.
Nam, H.-B.; Lee, K.H.; Yoo, H.Y.; Park, C.; Lim, J.-M.; Lee, J.H. Rapid and High-Yield Recovery of Sodium Alginate from Undaria pinnatifida via Microwave-Assisted Extraction. Processes 2024, 12, 208.
Nam, H.-B.; Lee, K.H.; Yoo, H.Y.; Park, C.; Lim, J.-M.; Lee, J.H. Rapid and High-Yield Recovery of Sodium Alginate from Undaria pinnatifida via Microwave-Assisted Extraction. Processes2024, 12, 208.
Nam, H.-B.; Lee, K.H.; Yoo, H.Y.; Park, C.; Lim, J.-M.; Lee, J.H. Rapid and High-Yield Recovery of Sodium Alginate from Undaria pinnatifida via Microwave-Assisted Extraction. Processes 2024, 12, 208.
Abstract
Alginate, a biopolymer promising in food, biomedical, pharmaceutical, and electronic materials industries, is characterized by its biodegradability, biocompatibility, low toxicity, and gel-forming properties. It is most abundantly found in brown algae. However, conventional dilute acid and alkali extraction methods face limitations in commercialization due to their long processing time, low throughput, and high solvent requirements. In this study, a microwave-assisted extraction (MAE) process for sodium alginate was designed to improve extraction efficiency. Solid/liquid ratio, extraction temperature, and extraction solvent concentration were major variables affecting sodium alginate extraction from Undaria pinnatifida(sea mustard). They were then statistically optimized using response surface methodology. Under optimal conditions (13.27 g/L, 91.86 ℃, 2.51 %(w/v), and 15 min), the yield was 38.41 %, which was 93.43 % of the theoretical content of sodium alginate in Undaria pinnatifida. Our work has confirmed the productivity and industrial feasibility of efficient extraction of sodium alginate from marine biomass, and we hope that it will serve as an encouraging case for the application of biopolymers as one of the desirable options for alternative petrochemicals to construct a sustainable society.
Biology and Life Sciences, Biochemistry and Molecular Biology
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