内衣宜用冷水洗 内衣、内裤由于直接接触皮肤,脏得快,应勤洗勤换。洗时应避免用热水浸泡,要用冷水洗。 这是因为汗液除含有油脂外,还含有一些水溶性的蛋白质,蛋白质在受热时会发生凝固,成为变性蛋白,它在水里是不能溶解的。用热水泡或洗内衣,都会加快蛋白质的变性,凝固的蛋白质积存在纤维之间,促使衣服发黄变硬,从而缩短寿命。 Underwear should be washed with cold water underwear, underwear due to direct contact with the skin, dirty fast, should Qin wash wash. Wash should avoid using hot water to soak, should use cold water to wash. This is because sweat contains, in addition to fat, some water-soluble proteins that coagulate when heated and become denatured proteins that are insoluble in water. With hot blisters or underwear, will accelerate protein denaturation, coagulation of protein accumulation between the fibers, prompting the yellowing of clothes harden, thus shortening the life span.