FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (5): 241-244.

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Optimization Technique of Synchronous Ultrasonic-assisted Extraction of Polysaccharide and Phycobiliprotein from Porphyra yezoensis

 ZHU  Xiao-Jun, AN  Xin-Xin, GU  Li, HU  Qiu-Hui   

  1. College of Food Science and Technology,Nanjing Agricultural University
  • Online:2008-05-15 Published:2011-08-26

Abstract: Using Porphyra yezoensis as the raw material,single factor and orthogonal tests were conducted to obtain the optimum conditions of synchronous ultrasonic-assisted extraction of polysaccharide and phycobiliprotein.The results showed that the optimum conditions are ultrasonic power 880 W,ultrasonic time 60 min,water extracting temperature 30℃ for 4 hours,and ratio of solid-liquid 1:50.Using the optimum conditions,the extraction percent of polysaccharide and phycobiliprotein is respectively 34.03% and 1.2%,and phycoerythrin purity is 0.356.

Key words: Porphyra yezoensis, polysaccharide, phycobiliprotein, synchronous ultrasonic-assisted extraction