Speaking of olive oil, many people should be familiar with it. Olive oil is a very good oil. The olive oil we usually see is edible and used for skin care. Edible olive oil is harmful to the human body. It has many benefits, but olive oil also has a shelf life. Generally, food cannot be eaten after it has expired. Can olive oil still be eaten after it has expired? Can you still eat olive oil after it has expired?

1. Can olive oil be eaten after it has expired?

It is best not to use olive oil after it has expired.

Olive oil can last for several years when sealed, but once opened, it must be consumed within the shelf life, because edible oil can easily deteriorate. For the sake of health, it is better not to consume it.

2. Why it cannot be eaten

The oil in olive oil will automatically oxidize. After the oil is oxidized, it will produce many toxic oxidative decomposition products, forming peroxides. Rancidity will produce an unpleasant odor, and oil rancidity is not as easy to attract attention as food spoilage and mildew. When abnormal odors are emitted, the peroxides in oils have exceeded the standard, which is harmful to health.

3. How long is the shelf life of olive oil?

Generally speaking, olive oil includes virgin oil, blended oil, special virgin olive oil and other varieties. Among these varieties, only super grade olive oil is available. Virgin olive oil is the real olive oil. The shelf life of olive oil should be calculated from the time of pressing. The shelf life of virgin olive oil is 12 months and the shelf life of refined olive oil is 18 months.

4. What to do with expired hair

(1) Care for hair

After washing your hair, add a small amount of olive oil to warm water and rinse it. , the oil is evenly attached to the hair. If you feel it is too greasy, you can wash your hair again with shampoo. The vitamin B and vitamin E contained in olive oil have a moisturizing effect. Olive oil is often used to care for your hair, which can make your hair shiny. Soft and shiny, prevents hair from turning yellow, hair loss, oiliness, dandruff, dryness and split ends, etc.

(2) Care for hand skin

The back of human hands has relatively few sebaceous glands, and they are exposed to the outside for a long time. They need to frequently supplement nutrients and oily ingredients, otherwise the skin will become dry. Applying a small amount of olive oil to your hands frequently can effectively moisturize the skin of your hands and keep them delicate.

(3) Prevent cracking and itching

In the dry season, rubbing an appropriate amount of olive oil on the skin can effectively prevent skin chapped and low sebum secretion leading to itching; in babies Applying an appropriate amount of olive oil to the buttocks, armpits, etc. can relieve skin itching caused by sweat or urine soaking in these areas.

5. How to identify true and false olive oil

1. Look at the product name and classification.

The name of olive oil can be divided into extra virgin olive oil (or extra virgin olive oil), virgin olive oil (or virgin olive oil), and ordinary virgin olive oil according to its grade from high to low. (or ordinary virgin olive oil), olive pomace oil, etc. Pomace oil cannot under any circumstances be called olive oil.

2. Look at the processing technology.

Compared with the refining method, the cold pressing method means that the olive fruit is directly squeezed out through physical machinery, which is more natural and pure, and the nutrition is not damaged in any way. According to China's new edible oil management regulations, the processing method must be stated on the label.

3. Look at the place of origin.

The place of origin has a great impact on price and quality. Currently, among the main olive oil producing countries, Spain accounts for 1/3 of the world's total output, Italy accounts for 1/4, and Greece accounts for 1/5. Other oil-producing countries include Turkey, Syria, Portugal, France, Egypt, etc.

4. Look at the bottled place.

Currently, the vast majority of olive oil sold in the Chinese market relies on imports. There are mainly two types of imported olive oil: original and repackaged.

5. Look at the packaging.

Since olive oil is sensitive to light, if the light is sustained or strong, the olive oil will be easily oxidized. It is recommended to choose dark glass bottles or containers that are not easy to transmit light when purchasing olive oil. The international standard packaging of olive oil is: 250 ml, 500 ml, 750 ml, 1 liter, 3 liters, 5 liters, etc.

6. Look at the certificate.

Olive oil imported legally into China should have a series of exporting country official certificates, quality certification documents, Chinese official certificates and quality certification documents, etc., including imported food label review certificates, exporting country official inspection reports, export National laboratory reports, quality certification certificates of foreign manufacturers, health certificates, quality certificates, Chinese laboratory inspection reports and health certificates, etc.

7. Taste.

Bad olive oil has the following characteristics: mixed oil body, light color, stale smell, musty smell, muddy smell, sour wine smell, metallic taste, harsh smell and other odors.