2.1.3. Preparation of composite solution of ginger, onion, garlic and
chitosan
Chitosan was dissolved by adding 1% (w/v) glacial acetic acid
and mixed with the proposed 10% (w/v) aqueous extract of ginger,
onion and garlic (GOG10) mentioned above, which made chitosan
a final concentration of 1% (w/v), and this was assigned as Mix1
(10% aqueous extract of ginger, onion and garlic–1% chitosan composite
solution). Mix2 (5% aqueous extract of ginger, onion and
garlic–0.5% chitosan diluted solution) was prepared by mixing
Mix1 with equal volume of distilled water.