Abstract
Polysaccharides (ASP) were extracted from Angelica Sinensis Radix (ASR) and were subjected to freeze drying (ASP-FD), vacuum drying (ASP-VD), and hot air drying (ASP-HD). Structural characteristics, rheological and emulsifying properties, antioxidant, anticoagulant and alkaline phosphatase inhibitory activities of ASPs were firstly investigated. ASP-FD owned higher thermostability, unique morphological structure, uniform and the lowest molecular weight, which is suitable for using as a raw material for polysaccharide derivatives. Smaller viscosity of ASP-FD supplied a better appearance that consumers preferred and the smallest particle size was benefit to manufacture instant soluble products. ASP-VD behaved the highest neutral sugar content, protein content, intrinsic viscosities, and the best emulsifying activity, being a candidate for cosmetics additive. ASP-HD exhibited the highest apparent viscosities, higher thermostability, loose structure, and better bioactivities. Drying conditions had significant effect on the physicochemical properties and bioactivities of ASPs. ASPs with specific characteristics may meet the requirements for diverse applications.
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