Why do we need lemon juice to make blueberry jam? Can’t lemon juice be applied directly on the face?

Why do we need lemon juice to make blueberry jam? Can’t lemon juice be applied directly on the face?

Lemon juice is the juice obtained by squeezing fresh lemons. It has a very strong sour taste, accompanied by a light bitterness and a fresh fragrance. Lemon juice contains sugars, vitamin C, vitamin B1, B2, niacin, calcium, phosphorus, iron and other nutrients. So why do we need lemon juice to make blueberry jam? Can't lemon juice be applied directly to the face? Let's take a look at the introduction of Encyclopedia Knowledge Network below!

Contents of this article

1. Why do we need lemon juice to make blueberry jam?

2. Do not apply lemon juice directly to your face

3. How to preserve lemon juice

1

Why do you need lemon juice to make blueberry jam?

This is because lemon contains fruit acid, which has a certain bactericidal effect. When boiling blueberries, adding a little lemon can kill some bacteria, so that the blueberries can be preserved longer. Blueberries are very sweet, and lemons are sour. Adding lemon juice can adjust the pH value and make the blueberries taste better. Lemon has a fresh fruity aroma, which can increase the aroma of blueberries and make the color of blueberries look better.

2

Do not apply lemon juice directly to your face

Because there is too much fruit acid in lemons, fresh lemon juice is corrosive and too irritating to the skin.

Lemon juice has a high content of vitamin C, which has a whitening effect, can prevent and eliminate skin pigmentation, and make the skin smooth and tender. However, if the fruit acid is directly exposed to the skin without being refined, it is likely to irritate the skin and even cause redness, scaling, itching and other problems. People with oily skin may not react significantly due to the thick sebum, but those with allergic skin or dry skin may feel uncomfortable once they try it.

3

How to preserve lemon juice

When using lemon in cooking, only a little bit is enough. How to preserve the unused lemon juice? In fact, you can just pour the squeezed lemon juice into an ice box and freeze it. When you need it, take out the appropriate amount and use it after thawing. It is very convenient.

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