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Bealu Girma
Influence of Altitude on Caffeine, 5-Caffeoylquinic Acid, and Nicotinic Acid Contents of Arabica Coffee Varieties
by Bealu Girma and Abera Gure
Journal of Chemistry
The influence of altitude on caffeine, 5-caffeoylquinic acid (5-CQA), and nicotinic acid contents... more The influence of altitude on caffeine, 5-caffeoylquinic acid (5-CQA), and nicotinic acid contents of Arabica coffee varieties grown in Southwest Ethiopia was investigated. High-performance liquid chromatography with diode array detector (HPLC-DAD) was used for the determination of the target analytes. Coffee samples were collected from four coffee varieties, named as 74112, 7454, 7440, and 74110, which are cultivated in high, mid, and low altitudes in the study area. The findings of the study showed that the contents of caffeine and 5-CQA in both raw and roasted coffee beans decrease as the growing altitude increases and, thus, for all varieties, their highest concentrations were recorded in lowland coffee beans. Nevertheless, the contents of nicotinic acid increase as the altitude rises and, thus, the highest nicotinic acid content was recorded in highland coffee samples. Besides, after roasting, the contents of caffeine were increased, whereas the contents of 5-CQA were lowered, i...
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Journalist Bealu Girma (1939-1984)
Bealu Girma was born on 22 September 1939, in the province of Illiubabor, Ethiopia. His father was an Indian businessman, and his mother a local woman born to a wealthy family. His parents’ marriage ended when his father decided to move his family to Addis Ababa, and his mother’s family refused to permit them to leave. After the separation, Baalu's father continued to provide for his son; but Baalu never managed to develop a strong relationship with his father. In college, he changed his last name to Girma, after a family who took him in as their own and gave him love and care throughout his childhood in Addis.
Aside from being very close to his maternal grandfather and having some loving memories of one particular teacher, Baalu rarely talked about his childhood in Illiubabor. After he completed traditional Ethiopian schooling as a child, Bealu moved to Addis Ababa and became a boarding student at the Zeneb Worq Elementary School.
Although he was academically very bright, as a youngster, he was also known for being a bit of a troublemaker. In fact, he was known to organize a school-wide protest in order to get his wishes.
Bealu's excellent grades earned him a scholarship at General Wingate Secondary School. In 1951, he
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