What are the health effects of espresso oil? is coffee oil harmful to the body?

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Oil is the golden to chocolate liquid just extracted from the upper layer of espresso, which is inextricably linked to the "pressure" itself. after the extraction is completed, the lighter color of the oil floats on the upper layer, while the darker color of the coffee liquid will rest in the lower layer.

Concentrated oil is a mixture of many substances: water extracts the soluble substances in the coffee powder layer under heating and pressurization, which emulsifies the natural fat and oil in the coffee and mixes the air to form some tiny and fine bubbles.

On the one hand, oil reflects the status of raw coffee beans, the more oil, the more natural oil content of coffee beans, which is also related to the handling of raw beans; at the same time, it also reflects the roasting degree and freshness of coffee beans.

The influence of oil and fat

Oil reflects the status of raw coffee beans, the more oil, the more natural oil content of coffee beans, that is, fresh coffee beans. However, a coffee with fat does not necessarily mean that it is a good espresso. For example, robusta coffee beans are rich in oil.

Espresso is actually the most direct and simple way to show the original flavor of coffee, so poor beans, poor grinding, poor powder pressing, improper machine operation, too short or too long extraction time, etc., will affect the flavor of a cup of espresso. So the next time you have an espresso, don't rush to judge whether the coffee is good or bad by fat.

Coffee can reduce the risk of coronary heart disease, heart failure and atrial fibrillation. However, other studies have found no correlation between caffeine and atrial extrasystole or ventricular extrasystole. Studies on the mechanism have found that coffee beans can reduce the oxidation of low density lipoprotein cholesterol.

Cerebrovascular disease and stroke

A Meta analysis found that drinking one to six cups of coffee a day reduced stroke risk by 17 per cent, while a study of Swedish women found a 22 per cent reduction in stroke risk by 25 per cent. Another Meta analysis, which included people without cerebrovascular disease, concluded that drinking one to three cups of coffee a day might prevent ischemic stroke. A Japanese study found that drinking coffee for an average of 13 years reduced the risk of stroke by 20%.

diabetes

Coffee seems to play an important role in fighting hyperglycemia, dyslipidemia and weight gain. A large number of studies have found a significant correlation between coffee drinking and improved glucose metabolism insulin secretion and a significant reduction in the risk of diabetes. Experts believe that the negative correlation between coffee and diabetes may be related to its anti-inflammatory properties and the antioxidant mechanism of chlorogenic acid in coffee, and chlorogenic acid is thought to inhibit glucose absorption.

cancer

Studies have found that coffee is associated with a variety of cancer risk reductions, including endometrial cancer (more than 4 cups / day), prostate cancer (6 cups / day), head and neck cancer (4 cups / day), breast cancer (more than 5 cups / day), basal cell carcinoma (more than 3 cups / day), and melanoma. It is believed that these effects are at least partly due to the antioxidant and antimutagenic properties of coffee. Recently, researchers also found that people who drank more than 2.5 cups of coffee a day had a significantly lower risk of colorectal cancer.

Neurodegenerative disease

In addition to being a quick pick-me-up, coffee seems to be good for long-term cognition. People with mild cognitive impairment drink three to five cups of coffee a day to prevent the disease from progressing, according to a study. Another study found a correlation between caffeine and memory consolidation, coffee and the prevention of Louis corpuscles.

It was found that caffeine could inhibit the production of β-amyloid protein, while coffee could increase the levels of granulocyte colony-stimulating factor, IL-10 and IL-6. Caffeinated coffee is also thought to have a neuroprotective effect on people with Parkinson's disease.

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