ĐIỀU CHẾ AXIT ALGINIC KHỐI LƯỢNG PHÂN TỬ THẤP CÓ CẤU TRÚC ĐẶC TRƯNG BẰNG PHƯƠNG PHÁP THỦY PHÂN ALGINAT TÁCH TỪ RONG MƠ KHU VỰC VEN BIỂN MIỀN TRUNG

Abstract

The alginic acids with rich polymannuronic (MM), polyguluronic (GG) and rich heteropolyme (MG) composition have been prepared from alginate isolated from brown seaweeds in the Central coastal region by pH adjust method. The alginate are hydrolyzed by hydrochloride acid under hydrothermal treatment. The alginic acid fractions enriched in MM, GG and MG are obtained by adjusting pH from 7 to 1.3 and are characterized by ¹H-NMR. The survey results on their biological activities showed that the obtained oligoalginates are capable of stimulating the germination of the rice seeds and the growth of the stimulating rice but with different degrees.