1, dry lemon slices, the reason for the bitterness is lemon peel, remove it will not be bitter.?

2, fresh lemon slices, boiling water will become bitter, not more than 50 degrees out of the bubble will not be bitter, the bitterness will increase with the increase in temperature.

Lemon leaves can be used for the extraction of spices, lemon fresh fruit epidermis can produce lemon essential oil, lemon essential oil is both the production of high-level cosmetic important raw materials, but also the production of drugs for the treatment of stone disease is an important ingredient; fruit embryo can also be the production of pectin, orange peel glycosides, pectin is both the production of high-level candies, preserves, jams, and can be used in the production of medicines to treat gastric disease;

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Expanded Information:

Lemon is rich in Vitamin C, sugar, calcium, phosphorus, iron, vitamin B1, vitamin B2, niacin, quinic acid, citric acid, malic acid, hesperidin, naringenin, coumarin, high amount of potassium and low amount of sodium, etc., which is very beneficial to the human body. Vitamin C can maintain the body's various tissues and interstitial cell production, and maintain their normal physiological functions.

Matrix, bonding and gliogenesis in the human body, etc., all need vitamin C to protect. When vitamin C is lacking, the interstitium between cells - the gelatinous material - follows. As a result, cell tissues become brittle and lose the ability to resist external forces, and the human body is prone to scurvy. It also has more uses, such as the prevention of colds, stimulation of hematopoiesis and anti-cancer effects.

Baidu Encyclopedia - Lemon