Grasp the "Four Goods" Standards to Drink Lemonade Scientifically

Whether it is a scorching summer or a dry autumn, the sourness of a glass of lemonade can bring comfort to the taste buds

Li Xinguo, a professor at the School of Horticulture at Hainan University, said that lemons are full of juice, rich in aroma, rich in vitamin C, vitamin A, vitamin B1 and vitamin B2 and other ingredients that are beneficial to the human body

Few people can control the sour and refreshing taste of lemon

Although lemon tastes sour and slightly bitter, it cannot be eaten raw like many fruits, but soaking it in water can relieve the heat

How to choose good-quality fresh lemons, Li Xinguo reminds consumers to remember the "four good" standards:

Good-looking: The high-quality lemons are well-shaped, and some varieties have obvious characteristics, such as the papillae on the top of the Yulik lemon fruit; the peel color is lemon yellow or green, the skin is bright, and there are no cracks or insect eyes

Smell: Fresh lemons exude a refreshing scent

Delicious: The fresh lemon fruit is sour, slightly bitter, and has no rancidity or wine taste

Favorite: Fresh lemons are full of water, feel firm and firm, and feel heavier when you weigh them; the epidermis looks tight, and when you gently pinch the epidermis, there will be no obvious depressions

The ripening time of lemon fruits is mainly from September to November each year, so the supply time of fresh lemons is only about 3 months, and the dried lemon slices become the best "substitute", which can prolong the shelf life of lemons, and also can improve the quality of lemons.

According to Li Xinguo, a good piece of dried lemon slice still has a faint fragrance, and the quality is poor if there is no fragrance

Lemon soaked in water, thicker or lighter?

Fan Zhihong, a professor at the School of Food and Nutritional Engineering at China Agricultural University, said that the lemonade must be light

Some people worry that soaking lemons in hot water will destroy the vitamin C in them? Fan Zhihong analyzed that lemons are more acidic, while vitamin C has better heat resistance under acidic conditions and is not easy to lose, even if the water temperature is higher than 60 degrees

How to make a good cup of lemonade, Fan Zhihong advises consumers to pay attention to the following points: The lemon peel is rich in lemon essential oil that can emit aroma and flavonoids that are beneficial to the human body, so be sure to slice it with the peel when soaking in water

　　Gastric patients can not drink lemonade? Fan Zhihong introduced that the pH value (acidity and alkalinity) of pure lemon juice is about 2.

　　Gout patients should not drink? Fan Zhihong explained that the main components of lemonade are citric acid, potassium, vitamin C, polyphenol antioxidants, and a small amount of lemon essential oil

　　Should kidney stone patients not drink? Fan Zhihong said that citric acid not only does not promote kidney stones like oxalic acid, on the contrary, organic acids such as citric acid are beneficial to the human body to absorb calcium, magnesium, iron, zinc and other minerals in food

　　Can people with high blood pressure and diabetes drink lemon water? Fan Zhihong introduced that unsweetened light lemon water has no sodium and almost no energy, but contains potassium, a small amount of vitamin C and a small amount of flavonoids, which is very suitable for people with chronic diseases such as hypertension, coronary heart disease and diabetes
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(Li Jian)

　　"China Food News" (06 edition on August 18, 2022)

　　(Editor-in-charge: Zhu Meiqiao)