FOOD SCIENCE ›› 2012, Vol. 33 ›› Issue (24): 11-15.doi: 10.7506/spkx1002-6630-201224003

• Processing Technology • Previous Articles     Next Articles

Orthogonal Array Design for the Optimization of Arsenic Removal from Kelp

SHU Ben-sheng,ZHAI Yu-xiu,LIU Jun-rong,NING Jing-song,SHANG De-rong,GUO Ying-ying,ZHAO Yan-fang,SUI Ying,SHENG Xiao-feng   

  1. 1. College of Food Science and Engineering, Dalian Ocean University, Dalian 116023, China;2. Key Laboratory of Test and Evaluation on Quality and Safety of Aquatic Products, Ministry of Agriculture,Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;3. National Center for Quality Supervision and Test of Aquatic Products,Qingdao 266071, China
  • Received:2011-09-25 Revised:2012-10-15 Online:2012-12-25 Published:2012-12-12

Abstract:

In this study, an orthogonal array design was applied to establish optimum conditions for arsenic removal from kelp based on the removal rates of total and inorganic arsenic. The optimal conditions for removing arsenic from kelp were found to be treatment with 3% citric acid at 40 ℃ for 40 min with a kelp-to-citric acid ratio of 1:15 (g/mL). Under these conditions, the removal rates of total and inorganic arsenic were 65.71% and 74.39%, respectively. The contents of crude protein, crude fat, amino acids and total sugar in kelp showed a notable increase, while the contents of ash an mineral elements declined and other nutrients did not reveal any changes after arsenic removal.

Key words: kelp, total arsenic, inorganic arsenic, removal rate

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