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coffee house

Coffea arabica

Senin, 29 Oktober 2007

Coffea arabica is a species of coffee indigenous to Ethiopia and Yemen, hand picked by the natives. It is also known as the "coffee shrub of Arabia", "mountain coffee" or "arabica coffee". Coffea arabica is believed to be the first species of coffee to be cultivated, being grown in southwest Arabia for well over 1,000 years. It is considered to produce better coffee than the other major commercially grown coffee species, Coffea canephora (robusta). Arabica contains less caffeine than any other commercially cultivated species of coffee. Wild plants grow to between 7-12 m tall, and have an open branching system; the leaves are opposite, simple elliptic-ovate to oblong, 6-12 cm long and 4-8 cm broad, glossy dark green. The flowers are produced in axillary clusters, each flower white, and 1-1.5 cm diameter. The fruit is a berry 10-15 mm long, maturing bright red to purple, containing two seeds (the coffee 'bean').

Coffea arabica takes about seven years to mature fully and does best with 1-1.5 meters (about 40-59 inches) of rain, evenly distributed throughout the year. It is usually cultivated between 1,300 and 1,500 m altitude, but there are plantations as low as sea level and as high as 2,800 m. The plant can tolerate low temperatures, but not frost, and it does best when the temperature hovers around 20°C (68°F). Commercial cultivars mostly only grow to about 5 m, and are frequently trimmed as low as 2 m to facilitate harvesting. Unlike Coffea canephora (robusta), Coffea arabica prefers to be grown in light shade.

Drawing of Coffea arabica
Drawing of Coffea arabica

Three to four years after planting coffea arabica produces small, white and highly fragrant flowers. The sweet fragrance resembles the sweet smell of jasmine flowers. The flowers that open on sunny days produce the greatest numbers of berries. This can be a curse however as coffee plants tend to produce too many berries; this can lead to an inferior harvest and even damage yield in the following years as the plant will favor the ripening of berries to the detriment of its own health. On well kept planatations this is prevented by pruning the tree. The flowers themselves only last a few days leaving behind only the thick dark green leaves. The drupes, or berries, then begin to appear. These are as dark green as the foliage, until they begin to ripen, at first to yellow and then light red and finally darkening to a glossy deep red. At this point they are called 'cherries' and are ready for picking. The berries are oblong and about 1 cm long. Inferior coffee results from picking them too early or too late, so many are picked by hand. But they are sometimes shaken off the tree onto mats.

The trees are difficult to cultivate and each tree can produce anywhere from 0.5-5 kg of dried beans, depending on the tree's individual character and the climate that season. The berries themselves are edible. They are very sweet, with a texture somewhat like a grape. The real prize of this cash crop are the beans inside. Each berry holds two locules containing the beans. The coffee beans are actually two seeds within the fruit, there is sometimes a third seed or one seed, a peaberry in the fruits at tips of the branches. These seeds are covered in two membranes, the outer one is called the 'parchment' and the inner one is called the 'silver skin'.

In perfect conditions, like those of Java, trees are planted at all times of the year and are harvested year round. In less ideal conditions, like those in parts of Brazil, the trees have a season and are harvested only in winter. Gourmet coffees are almost exclusively high-quality mild varieties of coffea arabica, like Colombian coffee.

According to legend, human cultivation of coffee began after goats in Ethiopia were seen becoming frisky after eating the leaves and fruits of the coffee tree. In reality, human consumption of coffee fruits probably began long before humans took up pastoralism. In Ethiopia there are still some locales where people drink a tisane made from the leaves of the coffee tree.

The first written record of coffee, made from roasted coffee beans, comes from Arabian scholars who wrote that it was useful in prolonging their working hours. The Arab innovation of making a brew from roasted beans, spread first among the Egyptians and Turks and later on found its way around the world.

Brazilian biologists have found an Ethiopian Coffea arabica that naturally contains very little caffeine. Paulo Mazzafera, a researcher of Universidade Estadual de Campinas, recently published findings in the journal Nature about these strains of Coffea arabica plants. While beans of normal Coffea arabica plants contains 12 milligrams of caffeine per gram of dry mass, these newly found mutants contain only 0.76 milligrams of caffeine per gram with all the taste of normal coffee.

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posted by Admin aka Mimin, 21.45 | link | 0 comments |

Coffee bean


A coffee bean is the seed of the coffee plant (the pit inside the red or purple fruit). The fruits, coffee cherries or coffee berries, most commonly contain two stones with their flat sides together. Coffee beans consist mostly of endosperm that contains 0.8 - 2.5 % caffeine, which is one of the main reasons the plants are cultivated. Coffee beans are an important export product for some countries.
The name derives from the Arabic language (قهوة qahwa - "coffee" and bunn - "berry"). The name bean is not botanically accurate. Coffee is the seed of a fruit not a vegetable.

Species of coffee plant include Coffea arabica, Coffea benghalensis, Coffea canephora, Coffea congensis, Coffea excelsa, Coffea gallienii, Coffea bonnieri, Coffea mogeneti, Coffea liberica, and Coffea stenophylla. The seeds of different species produce coffee with slightly different characteristics.

Coffea arabica accounts for about 75% of the world's coffee trade, while Coffea canephora (syn. Coffea robusta) is cultivated where Coffea arabica does not thrive, and Coffea liberica and Coffea excelsa are grown in limited areas.

In a crop of coffee, a small percentage of cherries contain a single bean, instead of the usual two. This is called a peaberry.

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posted by Admin aka Mimin, 21.37 | link | 0 comments |

Coffee

Sabtu, 27 Oktober 2007


Coffee is a widely consumed beverage prepared from roasted seeds, commonly called beans, of the coffee plant. Coffee was first consumed in the 9th century, when it was discovered in the highlands of Ethiopia. From there, it spread to Egypt and Yemen, and by the 15th century had reached Persia, Turkey, and northern Africa. From the Muslim world, coffee spread to Italy, then to the rest of Europe and the Americas. Today, coffee is one of the most popular beverages worldwide.

Coffee berries, which contain the coffee bean, are produced by several species of small evergreen bush of the genus Coffea. The two most commonly grown species are Coffea canephora and Coffea arabica. These are cultivated in Latin America, southeast Asia, and Africa. Some controversy is associated with coffee cultivation and its impact on the environment. Once ripe, coffee berries are picked, processed, and dried. The seeds are then roasted, undergoing several physical and chemical changes. They are roasted to various degrees, depending on the desired flavor. They are then ground and brewed to create coffee. Coffee can be prepared and presented by a variety of methods.

Coffee has played an important role in many societies throughout history. In Africa and Yemen, it was used in religious ceremonies. As a result, the Ethiopian Church banned its consumption until the reign of Emperor Menelik II of Ethiopia. It was banned in Ottoman Turkey in the 17th century for political reasons, and was associated with rebellious political activities in Europe. Coffee is an important export commodity: in 2004, coffee was the top agricultural export for 12 countries; and in 2005, it was the world's seventh largest legal agricultural export by value. Many studies have examined the relationship between coffee consumption and certain medical conditions, but whether the effects of coffee are positive or negative is still disputed



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posted by Admin aka Mimin, 21.17 | link | 0 comments |