Caffeine content of Liberian Coffee Bean

Caffeine content of Liberian Coffee Bean

1. Summary: coffee is a perennial evergreen shrub or small tree of Rubiaceae. Native to tropical Africa, it has been cultivated for more than 2000 years. Arabs began to grow coffee in 525 BC. Arabs are popular to stir-fry coffee beans, which began to be planted on a large scale after the 15th century. it is widely distributed in tropical and subtropical regions of Europe, Asia, Africa and Latin America after the 18th century, and has become the first of the three major beverage crops in the world.

two。 Uses: coffee beans are an important raw material for making beverages. Coffee drinks are widely consumed all over the world and are deeply loved by people. Coffee beans are also pharmaceutical raw materials. Caffeine can be extracted and used as anesthetics, diuretics, stimulants and cardiotonic agents.

3. Processing: (1) dry method: this method is simple, generally can be dried by sun-drying or electric oven, and after drying, the commercial coffee beans can be obtained by shelling and peeling off the pericarp and seed shell and sieving impurities.

Also known as Liberian species, evergreen trees. The plant is tall, more than 10 meters high, the branches are thick and hard, grow obliquely upward, and the branches cork the fastest. The leaf blade is oval or round, the leathery leaf surface is glossy, the leaf end is closed, and the leaf margin is not corrugated. The fruit is large, oblong, the skin and pulp are hard and thick, the navel is large and protruding. The ratio of fresh fruit to dried bean is about 7: 10. The seed shell is thick, hard and tough, the seed coat is close to the seed kernel, the bean grain is large, and there are about 1300 beans per jin. The ripe fruit is scarlet. The branches bear less fruit, and the number of fruits per node is about 5-6. The main root of this species is deep, drought-resistant, wind-resistant, cold-resistant, light-resistant, and most susceptible to rust. The yield per plant is high and the yield per unit area is low. Strong flavor and strong irritation.

The main varieties are Esselsa (also called Charley), which was introduced from Guangxi to Hainan in the 1970s. The fruit is vigorous, but the seed coat is thick and hard like a small seed, the ratio of fresh to dry is 5: 8, and the quality is strong and slightly bitter. It has deep roots, strong drought and cold tolerance, and is resistant to leaf rust and longicorn beetles.