“…Aer adding 100 mg of CL-ALH to the tea-bag, it was hung upside down in a beaker containing 100 mL of swelling medium, i.e., pH 7.4, and allowed to expand for 1 h. The weight of the tea-bag was determined using eqn (1) aer every 15 min. Aer 1 h of studying the effects of swelling, the same tea-bag was placed in a different beaker (100 mL) that contained a deswelling medium, i.e., pH 1.2, and it was le to deswell for 1 h. Aer waiting for 15 min., the tea bag was removed and its ability to deswell was determined using eqn (1). This cycle of swelling/deswelling was performed a total of four times.…”