Understand why coffee is bitter?
Why is coffee bitter? This problem has plagued scientists for decades.
Now, scientists have narrowed down their research and targeted two chemical molecules. At the annual meeting of the American Chemical Society, scientists reported that the two bitter chemical molecules were produced during the processing of coffee, a discovery that could revolutionize the coffee processing industry.
Thomas Hoffman of the University of Technology in Munich, Germany, and his colleagues once again separated the brewed coffee. After analysis by mass spectrometer, Hoffman identified one of the molecules, chlorogenic acid lactone, which is a decomposition product of chlorogenic acid (found in almost all plants). Hoffman's team then prepared a series of different coffees to determine the content of chlorogenic acid lactone. Although lactone will only produce mild bitterness in mild and moderate roasted coffee, the secondary decomposition products of lactone will produce strong bitterness if the coffee beans are roasted for a long time.
- Prev
Healthy black coffee
The earliest coffee on the island of Jamaica came from Haiti in Latin America in 1728. By 1790, some coffee farmers among the refugees in exile from Haiti had settled in the Blue Mountains and brought coffee-growing technology here. In 1838, Jamaica abolished slavery and allowed liberated slaves to cultivate their own land. Free slaves moved to the mountains to specialize in planting.
- Next
The personality of all kinds of coffee
Brazilian coffee: moderate bitterness, soft flavor, unrestrained tropical taste, excellent base for mixed coffee. Columbia Coffee: smooth sour and sweet, mellow, full-bodied, JAZZ swaying atmosphere. Guatemalan coffee: excellent sour taste, mellow aftertaste, mysterious feeling. Suitable for release after hangover. Salvadoran coffee: a moderate combination of acid and fragrance, like warmth
Related
- A coffee shop drives customers out on the spot?! Store: No Chinese people are accepted
- Children suffocated and died after drinking pearl milk tea! Parents: The store did not inform the risk
- Can I put a thermos in a thermos pot to keep my coffee warm? Why does coffee not taste so good after it cools down? What is the most suitable amount of milk for latte?
- How to make coffee cream? Do I have to use instant powder for 400 hand-made coffee? What is the composition of coffee cream in Naples coffee?
- What is an authentic cappuccino? How to make cappuccino golden circles? What is the ratio of coffee to milk in a cappuccino?
- Can espresso beans be used to make hand-brewed coffee? What is the difference between Italian mixed beans and hand-made single beans? What are the characteristics of SOE coffee beans?
- Big battle! Mixue Ice City has opened three stores in the United States?!
- Lucky launches rice milk latte! Netizen: After drinking it, I thought I bought it an ordinary latte
- Remove the perimeter! Naixue's largest flagship store in the world quietly closed!!
- Manner Co-branded Cup is a literary style?! Netizen: I almost didn't recognize it