First, the unfriendly content (and the text is wrong):
Chinese people drink baijiu, don't they care about the harm of baijiu?
Southwesterners eat chili, aren't they afraid of getting angry?
Some people like to drink hot cocoa, are they not afraid of gaining weight?
Let's analyze "First ask if it is, and then ask why." First of all, you assume that drinking coffee is harmful, but in fact, not to mention the truth that talking about toxicity regardless of dosage is hooliganism, coffee has been proven to be effective against Parkinson's syndrome Invigorate the spirit, enhance the ability of instant memory, speed up the reaction speed, anti-depressant, promote digestion, control weight, reduce the chance of gallstones and so on.
Then let's talk about the bad things about coffee,
First, the refreshing effect of coffee comes from caffeine (trimethylxanthine)
Excessive caffeine (and various methylpurines such as theophylline) tend to cause adverse effects such as nervousness, insomnia (from caffeine), flushing, polyuria (from the metabolite theobromine) and gastrointestinal discomfort probably Need more than 200mg and vary from person to person. More than 1 gram of pure caffeine is required to cause cramps and arrhythmias. The half-lethal dose of caffeine in mice is 150 to 200 mg per kilogram of body weight, which means that an adult weighing 80 kg needs to consume 12,000 to 16,000 mg of caffeine to have a 50% chance of death, and the pharmacokinetics of caffeine The half-life is about 4 hours. What kind of concept is this, that is to say, under ideal circumstances, it is obviously difficult to drink more than 160 cups of double espresso or 160 cups of double American within four hours. The caffeine content of short-brew espresso is inherently low, and even drip coffee is difficult to achieve the equivalent of 400mg of caffeine in a single intake under daily drinking conditions. What's more, Ethiopia has successfully bred natural low-cause coffee trees, and this problem can already be solved.
If you think that the roasting of coffee beans may produce carcinogens, of course this possibility cannot be ruled out (because one of the values to measure the degree of coffee roasting is the caramelization value), but as long as it is not over-roasted (Starbucks has been criticized by industry insiders. It is not considered excessive in the chemical sense, because for baking, spot-like burnt black is basically a failure, we drink coffee and not charcoal), and the carcinogens produced when frying beans are not much less than fried melon seeds.
After analyzing the physiological effects, let’s talk about why coffee as a drink has not been replaced by tea.
First of all, many Chinese people regard coffee as a functional drink and tea as a daily drink because of caffeine. This is of course understandable, but in fact, the content of methyl purines in a cup of strong tea is definitely no less than that of a cup of coffee. Although the caffeine content of strong black tea is about 20% less than that of coffee, tea contains caffeine-like substances- ---Theophylline (dioxydimethylpurine), which has similar effects to coffee, including excitatory effects and adverse effects.
Second, many Westerners like to drink tea, but there is still a huge market for coffee, which shows that coffee and tea cannot be substituted for each other.
Third, in terms of flavor, coffee has different flavors from tea. Coffee can exhibit different flavors according to bean species (variety and terroir) and roasting degree (see flavor wheel). Tea also has flavors, but the types of flavors are not similar. You can drink the fruity taste in coffee, but it is difficult in tea, and the flavor of tea is the same.
Fourth, I have to say that extracting and drinking a cup of espresso takes much less time than brewing and drinking a cup of strong tea, which is more suitable for a fast-paced life.
Fifth, regarding fruit tea, since the respondent is not very clear about whether there are tea ingredients in the definition of fruit tea, it is difficult to answer, but commercially available fruit tea (I mean bottled) is to add fruity substances to the tea leaves To change the taste, and if the tea leaves and fruits are mixed together, it is not strictly a green tea flavor. Just like we can't say that cappuccino is delicious, the beans used to make cappuccino must be delicious if hand poured.
