Water hyacinth and water lettuce leaves The collected leaves were
washed manually using tap water, dried at 60 C
which is the best method for the enzymatic
hydrolysis of the aquatic plants (Mishima et al.,
2006) was applied. Briefly, the samples were reacted in
1% (w/v) NaOH at room temperature for 12 h, then 31%
H2O2 (w/v) was gently added so that the final concentration
of H2O2 reached 1% (w/v); the reaction was performed
for another 12 h.