吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (03): 882-886.

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Optimization of exopolysaccharide extraction process from Tibetan spiritual mushroom by pulsed electric fields

ZHANG Tie-hua1,WANG Shao-jun1,LIU Di-ru1,YUAN Yuan1,YU Ya-li1,YIN Yong-guang2   

  1. 1.College of Quartermaster Technology,Jilin University|Changchun 130062,China；2.College of Biological and Agricultural Engineering,Jilin University,Changchun 130022,China
  • Received:2010-03-21 Online:2011-05-01 Published:2011-05-01

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Abstract:

The high intensity pulsed electric field-assisted extraction technique was used to optimize the conditions of exopolysaccharides (EPS) extraction in Tibetan spiritual mushroom broth. The results show that the optimal conditions of this extraction technique are: electric field intensity of 40 kV/cm, number of pulses of 8, and pH of 7. These factors affect the EPS extraction in the order of electric field intensity > pH > number of pulses. The influence of the electric field intensity on EPS extraction is significant (α < 0.05). Under the optimal conditions the EPS extraction was increased by 84.3% compared to that of the control group.

Key words: food processing technology, pulsed electric fields, Tibetan spiritual mushroom, exopolysaccharides, extraction

CLC Number: 

  • TS252
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