Coffee and health problems
Coffee, as one of the three major drinks in the world, has a history of 1500 years.
Over the past 1500 years, caffeine has not only added countless stories to human history, but also brought small fluctuations to the changes of the world because of its bitterness, its fragrance and the spiritual enjoyment it brings to people. In addition to emotional enjoyment, people pay most attention to the topic of coffee and health when drinking coffee, and contrary to the suspicion that coffee is harmful to the human body, moderate consumption of coffee (three or four cups a day) is not only harmless to the human body, but has many positive effects.
The most common findings about the health benefits of coffee.
1. Caffeine in coffee can stimulate the excitement of the central nervous system, so drinking coffee can improve mood, improve brain response and logical thinking, enhance memory, relieve brain fatigue, refreshing, and relieve migraine symptoms.
Drinking coffee helps to promote body function, relieve fatigue, reduce muscle pain caused by exercise, and improve the persistence of physical exertion over a long period of time.
3. Coffee has a good diuretic effect and promotes human metabolism.
4. Coffee can promote blood circulation and enhance cardiovascular function.
The latest scientific research has a lot of positive effects on coffee drinking and cancer, diabetes, Alzheimer's and so on.
1, caffeine and skin cancer.
A study from the University of logos in New Jersey has shown that drinking coffee can reduce the risk of skin cancer. The study found that the ingredients in coffee can damage cells damaged by ultraviolet rays, preventing these damaged cells from regenerating and cancering, thereby preventing the incidence of skin cancer.
2, caffeine and diabetes.
Through an eight-year observation of 910 subjects, the University of California has shown that for healthy people, coffee drinking can reduce the prevalence of diabetes by up to 60%. The ingredients in coffee can maintain a stable balance of glucose in the blood and effectively reduce the risk of diabetes. 4 cups of coffee per day can be reduced by 29% for women and 27% for men.
Coffee contains a lot of antioxidants.
Antioxidants play an important role in improving human immunity, organ function and anti-aging, mainly from coffee, green tea, red wine, various vegetables and fruits. According to the study, there are more than 1000 kinds of antioxidants in raw coffee beans, and more than 300 kinds have been increased after extraction, and some of the antioxidants produced during coffee roasting are unique to coffee. The National Association of Agriculture and Food Chemistry has proved that the antioxidant content of coffee is four times that of green tea. Among the major food sources of antioxidants, coffee provides 64%, fruits 11%, tea 5%, grains 5%, red wine 5%, other 5%, vegetables 2%, fruit juices 2%.
4, coffee and dementia.
The caffeine in coffee helps to promote the excitement of the central nervous system, improve the response, promote brain thinking, and has a good preventive function against Alzheimer's disease.
Coffee can relieve muscle pain caused by exercise. A study from the University of Georgia has shown that drinking coffee before exercise can effectively reduce muscle pain caused by exercise.
In addition, there are some little-known facts about coffee and health.
Coffee contains more food fiber and antioxidants than orange juice.
Coffee can keep the mouth moist and help to reduce the dryness of the mouth.
3. Coffee can improve the ability of handwriting.
Coffee can effectively relieve asthma.
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Colombian coffee raw bean grading method
One: according to the defect rate, the number of defective beans allowed per 500 gr sample:-Private raw bean exporter: 72 defects-National Coffee Council: 42 defects defective beans are divided into two types:-first: known as first-level defects-second: called second-level defects first: main defects (defects that affect coffee taste characteristics): black beans, moldy beans.
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The basics of coffee roasting
one。 The meaning of baking 1. The definition of roasting so-called coffee roasting (coffee roasting) refers to the heating of raw beans to promote a series of physical and chemical reactions inside and outside of coffee beans, and in this process to produce a variety of sour, bitter, sweet and other flavors of coffee, forming mellowness and hue, and converting raw beans into dark brown beans. two。 The importance of baking is affecting a cup of coffee.
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