Phytic Acid Content and Phytase Acivity of Barley

보리의 Phytic Acid 함량과 Phytase 활성도

  • Lee, Won-Jong (Dept. of Food Science, Kangreung National University)
  • Published : 1989.03.01


Phytic acid content of 6 varieties of Korean barley ranged from 0.94 to 1.17%. Polishing of barleys greatly reduced the level of phytic acid. Cooking and autoclaving had little effect on phytic acid reduction, while ultrasonic treatment removed 57% of the phytic acid content. Germination decreased barley phytic acid 24% and increased phytase activity 9-fold. Phytase purified by ammonium sulfate precipitation, gel filtration and DEAE-cellulose chromatography showed an optimum pH of 5.0 and an optimum temperature of $40^{\circ}C$.