Page 44 - Abstract book - TJSSF-2020

Thailand – Japan Student Science Fair 2020 (TJ-SSF 2020)
“Seeding Innovations through Fostering Thailand – Japan Youth Friendship”

The Synthesis and Applications of Carboxymethyl cellulose water hyacinth
and bagasse for extend durability and protect agricultural products after
harvest of rice

Puwadet Ketkaew , Pisith Noinu
1
1
Advisor: Sukonthip Kaewla-ead
1

Saparachinee Trang school
1

Abstract
This project has purposes to synthesize Carboxymethyl cellulose from water hyacinth and bagasse, to
study ability in protection against mold and bacteria by using CMC from water hyacinth and bagasse to
coat the rice, and to study the germination index of rice coated with CMC from water hyacinth and
bagasse by the experiment that keep rice with no coating and rice coated with CMC from water hyacinth
and bagasse at 5 degree Celsius and 95 percent humidity for 1 month then check for quantity of mold
and bacteria with spread plate method. The measure of growth of mold and bacteria found that ability
in protection against mold and bacteria, rice without CMC coating had 4.56x103CFU/g of mold
9.0x103CFU/g of bacteria which are greatest, following with rice coated with CMC from water hyacinth
had 5.5x102CFU/g of mold 2.90x103CFU/g of bacteria, and rice coated with CMC from bagasse had
5.0x102CFU/g of mold1.5x103CFU/g of bacteria which are the least respectively. The germination
index measure experiment of rice that coated with Carboxymethyl cellulose from water hyacinth and
bagasse and rice without coating found that there was no significant difference. Consequently,
Carboxymethyl cellulose extracted from water hyacinth and bagasse was able to extend durability and
protect postharvest product of rice.

Keywords: Carboxymethyl cellulose

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