Development of Karonda (Carissa Carandas L.) Products in Amphawa District
This study has the purpose to find antioxidant and antibacterial activity of Carissa carandas, to develop karonda
glycerin soap, canned karonda juice and to improve products in Ampawa district. DPPH assay , reducing power method,
phosphomolybdenum method and total phenolic compound method were used to find antioxidant activity. The researcher
found that ripe karonda seed extract by using methanol has good antioxidant activity compared with other solvents e.g.
ethanol, hexane, ethyl acetate, etc. From antibacterial activity results, the researcher found that unripe seed extract from ethyl
acetate could inhibited the growth of E. coli , while unripe and ripe seed extract with methanol could not inhibited the growth
of 4 strains of pathogenic bacteria e.g. Listeria monocytogenes, Staphylococcus aureus, Escherichia coli and Salmonella
typhimurium. Karonda glycerine soap showed effectively against pathogenic bacteria. Karonda juice prepared from frozen
fruit has a lower antioxidant activity when compared with karonda juice made from fresh fruit. SC50 of karonda juice prepared
from fresh and frozen fruits is 2.11-2.76% and 2.4-3.36%. Producer should prepared karonda juice from fresh fruit to
produce karonda juice with good antioxidant activity.
Index Terms - Antioxidant Activity, Carissa Carandas, Glycerine Soap, Canned Karonda Juice