Calcium Infusion
Calcium infusion was done by immersion in calcium solution for 18 hours at 8 - 10oC or
vacuum-infusion 15 minutes at room temperature. All treatments were done in calcium
chloride solution at 0, 0.5 % and 1.0 % (w/v) concentration.
Calcium chloride dihydrate was used to prepare solutions at concentration of 0.5 % and 1.0
% (w/v) in distilled water. The calcium solution was used at room temperature and calcium
chloride was dissolved completely before jackfruit pulps were added to the solution.