Abstract
An experiment on polysaccharides from Rhodiolae Radix (PRR) extraction was carried out using microwave-assisted extraction (MAE) method with an objective to establishing the optimum MAE conditions of PRR. Single factor experiments were performed to determine the appropriate range of extraction conditions, and the optimum conditions were obtained using orthogonal experiment design. The results showed that the optimum MAE conditions of PRR were as follows: solid-liquid ratio of 1:45 g/mL, irradiation power of 480 W, and irradiation time of 8 min, while extraction yield of PRR was 3.24 %.
Highlights
Recent studies have suggested that the polysaccharides from Rhodiolae Radix (PRR) exhibit significant biological activities, which include antiviral, antidiabetic, and immune enhancing functions, and the promotion of the recovery of hematopoietic function in myelosuppressed (Li et al, 2006; Piao et al, 2000; Cheng et al, 1993; Zhang and Liu, 2009)
Plant materials Rhodiolae Radix was purchased from a local drug market and the material was identified by Mr Wang Guang Yao, a botanist of Jilin Agriculture Science and Technology College
Effect of solid-liquid ratio on extraction yield of polysaccharides from Rhodiolae Radix In investigating the effect of solid-liquid ratio on extraction yield of PRR, several tests were performed at different solid-liquid ratio (1:10, 1:20, 1:30, 1:40, 1:50 g/mL)
Summary
Current researches indicate that Rhodiolae Radix has many biological activities, such as adaptogenic, antihypoxia, antioxidant, anti-inflammatory, antiviral, antidiabetic, anticancer, immune enhancing and sexually stimulating properties (Choe et al, 2012; Li et al, 2011; Su et al, 2007; Zhang et al, 2007). Recent studies have suggested that the polysaccharides from Rhodiolae Radix (PRR) exhibit significant biological activities, which include antiviral, antidiabetic, and immune enhancing functions, and the promotion of the recovery of hematopoietic function in myelosuppressed (Li et al, 2006; Piao et al, 2000; Cheng et al, 1993; Zhang and Liu, 2009)
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