Who washes lettuce in warm water?

(1)Ingredient efficacy encyclopedia! Shin Dong-eui Bogam How to revive withered lettuce in a minute
(2)Put it in about 50 degrees of water and
(3)Before putting it in about 50 degrees of water
(4)Source: KBS Live Information Service
(5)Fresh information Chobok question mark 50℃ cleaning method
(6)Professor Choi Eun-jung, Department of Science Education at Ewha Womans University
(7)The thermal stimulation of about 50°C water temporarily opens many holes in vegetables, including pores