2016
DOI: 10.24843/jchem.2016.v10.i01.p15
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Analisis Kandungan Kafein Pada Kopi Di Desa Sesaot Narmada Menggunakan Spektrofotometri Uv-Vis

Abstract: Coffee is one of the agriculture commodities that are cultivated by farmers. One of the compounds in the coffee is caffeine. Caffeine is one of alkaloids which contains in coffee bean. The purpose of this study was to determine the contents of caffeine in unripe coffee, pure coffee powder, and mix coffee powder by using UV-Vis spectrophotometer. Standard solutions of caffeine used were 1 ppm; 3 ppm; 6 ppm; 9 ppm; 12 ppm; and 15 ppm. Caffeine calibration curve equation was y = 0.0494x ??+ 0.01862 with a correla… Show more

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Cited by 25 publications
(24 citation statements)
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“…Water content was analyzed using the oven drying method AOAC (AOAC: Official Methods of Analysis, 1995), total phenol used method of Folin-Ciocalteau (Folin and Ciocalteu, 1944), total flavonoid used method of aluminum chloride (AlCl3) (Atanassova et al, 2011), and caffeine content used UV-Vis Spectrophotometer method (Arwangga, 2016). For those analyses, each herb was extracted using water (infusion) at 90 o C for 5 minutes.…”
Section: Analysis Of Herbsmentioning
confidence: 99%
“…Water content was analyzed using the oven drying method AOAC (AOAC: Official Methods of Analysis, 1995), total phenol used method of Folin-Ciocalteau (Folin and Ciocalteu, 1944), total flavonoid used method of aluminum chloride (AlCl3) (Atanassova et al, 2011), and caffeine content used UV-Vis Spectrophotometer method (Arwangga, 2016). For those analyses, each herb was extracted using water (infusion) at 90 o C for 5 minutes.…”
Section: Analysis Of Herbsmentioning
confidence: 99%
“…Sedangkan sisanya 70% padatan tidak dapat dilarutkan oleh air dan tinggal sebagai ampas (Mulato dan Suharyanto, 2012 Arwangga et al (2016) menyebutkan bahwa kafein adalah salah satu jenis alkaloid yang banyak terdapat pada biji kopi, kadar kafein pada kopi mentah sebesar 1,28 ± 0,13% dengan kadar air 1%.…”
Section: Rendemenunclassified
“…Peralatan lain yang digunakan antara lain timbangan, alat/mesin sangrai, penggiling/grinder, sealer, ayakan dan peralatan penolong lainnya. Kafein merupakan salah satu senyawa alkaloid yang terdapat secara alami dalam biji kopi (Arwangga, et al, 2016). Bagi orang atau masyarakat yang memiliki kepekaan tinggi terhadap kafein, zat ini dapat menimbulkan beberapa gangguan kesehatan seperti jantung berdebar, peningkatan tekanan darah, susah tidur, kepala pusing dan sebagainya.…”
Section: Bahanunclassified