FOTOREDUKSI BESI Fe3+ MENGGUNAKAN EKSTRAK DAUN KAYU MANIS (Cinnamomum burmanii)

Meizy Vaneza Tan (Department of Chemistry Sam Ratulangi University, Manado)
Johnly A. Rorong (Department of Chemistry Sam Ratulangi University, Manado)
Meiske S. Sangi (Department of Chemistry Sam Ratulangi University, Manado)

Jurnal Ilmiah Sains
Volume 18 Nomor 1, April 2018

FOTOREDUKSI BESI Fe3+ MENGGUNAKAN EKSTRAK DAUN KAYU MANIS (Cinnamomum burmanii)       ABSTRAKTelah dilakukan penelitian tentang fotoreduksi besi Fe3+ menggunakan ekstrak daun kayu manis (Cinnamomum burmanii) dengan bantuan cahaya fluorescent 65 watt. Penelitian ini dilaksanakan pada bulan Juli – September 2017, bertempat di Laboratorium Biokimia Jurusan Kimia; Laboratorium Penelitian Jurusan Farmasi; dan Laboratorium UPT Terpadu Universitas Sam Ratulangi, Manado. Serbuk daun kayu manis diekstraksi secara refluks dengan metanol: 40; 60; dan 80%. Kandungan total fenolik; flavonoid; dan tanin ditentukan dengan reagen Folin-Ciocalteu; AlCl3; dan vanilin-HCl. Untuk kandungan besi tereduksi diukur dengan pembentukan kompleks besi(II)bipiridin. Hasil yang diperoleh menunjukkan bahwa ekstrak metanol: 40; 60; dan 80% memiliki kemampuan dalam mereduksi besi. Untuk ekstrak metanol 60% mempunyai efek fotoreduksi besi yang baik dimana kandungan besi(II) yang terbentuk sebesar 63,833 mg/L dengan waktu penyinaran selama 2 jam, dibandingkan ekstrak dengan konsentrasi pelarut metanol lainnyaKata Kunci: Daun Kayu Manis, Fenolik, Flavonoid, Tanin, Fotoreduksi Besi Fe3+ IRON PHOTOREDUCTION USING CINNAMON LEAF EXTRACT (Cinnamomum burmanii) ABSTRACTA study of Fe3+iron photoreduction has been done using cinnamon leaf extract (Cinnamomum burmanii) with the aid of 65 watt fluorescent light. This research was conducted in July - September 2017, held at Biochemistry Laboratory of Chemistry Department; Research Laboratory of Pharmaceutical Department; and the Integrated UPT Laboratory of Sam Ratulangi University, Manado. The cinnamon leaf powder is extracted by reflux with methanol: 40; 60; and 80%. Total phenolic content; flavonoids; and tannins are determined by Folin-Ciocalteu reagents; AlCl3; and vanilin-HCl. For reduced iron content is measured by the formation of iron(II)bipyridine complex. The result showed that methanol extracts: 40, 60: and 80% had ability in reducing iron. Methanol extract 60% had good iron photoreduction effect in which the iron(II) content was formed at 63.833 mg/L with irradiation time for 2 hours, compared to extract with other methanol solvent concentration.Keywords: Cinnamon Leaf, Phenolic, Flavonoid, Tannin, Iron Photoreduction