US 12,138,562 B2
Method for preparing kaffir lime extract and composition comprising kaffir lime extract
Hyun Je Han, Seoul (KR)
Assigned to KOREA BIO INDUSTRIAL DEVELOPMENT, INC., Daegu (KR)
Appl. No. 17/608,041
Filed by KOREA BIO INDUSTRIAL DEVELOPMENT, INC., Daegu (KR)
PCT Filed Jul. 31, 2020, PCT No. PCT/KR2020/010109
§ 371(c)(1), (2) Date Nov. 1, 2021,
PCT Pub. No. WO2021/025380, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 10-2019-0094309 (KR), filed on Aug. 2, 2019.
Prior Publication US 2022/0212122 A1, Jul. 7, 2022
Int. Cl. B01D 11/02 (2006.01); A61L 9/013 (2006.01); C11D 1/14 (2006.01); C11D 3/20 (2006.01); C11D 3/37 (2006.01); C11D 3/382 (2006.01)
CPC B01D 11/0288 (2013.01) [A61L 9/013 (2013.01); C11D 1/146 (2013.01); C11D 3/2065 (2013.01); C11D 3/3749 (2013.01); C11D 3/382 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for preparing a kaffir lime extract, the method comprising steps of:
low-temperature-treating kaffir lime leaves;
washing the low-temperature-treated kaffir lime leaves, followed by cutting into a size of 2 cm or less in width and 10 cm or less in length;
freezing the cut kaffir lime leaves;
adding purified water to the frozen cut kaffir lime leaves in an amount 5 to 10 times the weight of the cut kaffir lime leaves, followed by crushing and then heating at a temperature of 88° C. to 92° C. for 5 to 7 hours; and
cooling the heated and crushed materials to room temperature of 20° C. to 25° C., followed by filtration and concentration,
wherein the step of low-temperature-treating the kaffir lime leaves comprises illuminating the kaffir lime leaves with an illuminance of 1,000 to 1,200 Lux for 9 hours/day to 11 hours/day at a temperature of 5° C. to 10° C. for 8 to 12 days.