Analisis Kadar Kafein dalam Green Bean dan Roasted Bean Kopi Robusta (Coffea canephora) Temanggung Menggunakan Spektrofotometer UV
نویسندگان
چکیده
Kopi robusta adalah salah satu jenis kopi yang banyak dibudidayakan di Indonesia. Salah proses dapat menentukan kualitas roasting. Tingkatan roasting biji diklasifikasikan menjadi light, medium dan dark. Penelitian ini bertujuan untuk mengetahui pengaruh terhadap kadar kafein dalam berasal dari Temanggung. Biji dianalisis secara organoleptis, pH ukur densitasnya. Seduhan serbuk diekstraksi cair-cair dengan kloroform, filtrat diperoleh diuapkan sehingga terbentuk kristal. Hasil kristal analisa kualitatif reagen Parry kuantitatif spektrofotmeter UV. Persentase sampel menggunakan software SPSS. penelitian menunjukkan mempengaruhi warna, bau, ukuran densitas serta berkisar antara 4,65-4,73. uji membuktikan bahwa semua robusta, yaitu green bean, medium, dark mengandung kafein. Uji menyatakan terendah bean (0,64%) tertinggi (1,58%).
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ژورنال
عنوان ژورنال: Jurnal Sains dan Kesehatan
سال: 2022
ISSN: ['2303-0267', '2407-6082']
DOI: https://doi.org/10.25026/jsk.v4i6.1253