TITLE:
Inquiry of Water-Soluble Polysaccharide Extraction Conditions from Grapefruit Skin
AUTHORS:
Ziping Luo, Zilin Liu, Shiyu Tan, Qiliang Xu, Haiyan Yang, Lingli Yang
KEYWORDS:
Grapefruit, Water-Soluble Polysaccharide, Extracting Condition, Single Factor Experiment and Orthogonal Experiment
JOURNAL NAME:
Engineering,
Vol.3 No.11,
November
24,
2011
ABSTRACT: Water-soluble polysaccharide was isolated from grapefruit with the method of water-dissolving and ethanol-precipitating. By single factor test and orthogonal experimental method, the extraction conditions of the water-soluble polysaccharide were investigated, which contained liquid-solid ratio, temperature, time and pH. The results showed that pH was the most important factor of polysaccharide extraction, followed by temperature. The optimized extraction technology conditions were obtained. The liquid-solid ratio was 1:40, temperature was 90?C, time was 2.0 h, and pH was 2. The highest extraction rate of crude polysaccharide was 8.30%.