FOOD SCIENCE ›› 2005, Vol. 26 ›› Issue (10): 194-195.

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To Determine the Complexing Constants of Several Alginates

 WANG  Xiao-Hua, NIE  Ming, TAN  Shi-Yu   

  1. 1.Department of Experimental Teaching, Chongqing Jiaotong University; 2.College of Materials Science and Engineering, Chongqing University; 3.School of Chemistry and Chemical Engineering , Chongqing University
  • Online:2005-10-15 Published:2011-09-25

Abstract: The complexing ability between alginate radical (Alg—) and some typical ions such as Pb2+, Ca2+, Zn2+ and Mn2+ were determined in the applied research on alginate. The complexing constants and strength relationship were KPb2+(6.4×106)>KCa2+ (4.5×105)>KZn2+(1.11×104)>KMn2+(3.2×102), which indicated that the ability of Alg- complexing with Pb2+ was the strongest while Mn2+ the weakest.

Key words: alginate, complexing ability, complexing constants