Abstrak

Baca Juga : PENGARUH EKSTRAK BUAH JAMBLANG (SYZYGIUM CUMINI) TERHADAP PERTUMBUHAN CANDIDA ALBICANS SEBAGAI PENYEBAB KANDIDIASIS RONGGA MULUT SECARA IN VITRO (FITRI YUNITA SARI, 2015) ,

Baca Juga : INVENTARISASI DAN STUDI ETNOBOTANI TUMBUHAN GADUNG (DIOSCOREA SPP.) DI KABUPATEN ACEH UTARA (Hanny Herzegovina, 2015) ,

mampu menyerap pada panjang gelombang maksimum 523 nm. rentang penyerapan cahaya dye dari ekstrak buah jamblang 528-586 nm, dye dari ekstrak buah gadung 523,50-580 nm, dan dye dari campuran buah gadung dan buah jamblang mampu menyerap pada rentang 523-578 nm. ketiga dye yang diekstrak dari buah jamblang, buah gadung, dan campuran buah jamblang dan buah gadung memiliki absorbsi 1.389, 0.252, dan 0,309. dari ketiga sampel uji dye dari ekstrak buah jamblang memiliki nilai rentang serapan cahaya yang luas dan absorbsi yang tinggi dibandingkan dye yang berasal buah gadung dan dye dari campuran buah jamblang dan buah gadung. hasil uji ft-ir dari ketiga sampel menunjukkan adanya senyawa hidroksil (o-h) dan karbonil (c=o), sehingga baik diterapkan pada dssc. kata kunci: dssc, dye alami, buah jamblang, buah gadung, dan serapan cahaya abstract characterization of natural dye from jamblang fruit (syzygium cumini) and gadung fruit (dioscorea alata) have been analyzed. this research aims to determine the absorption capacity of the two materials, and to see the absorption properties of the mixed materials. this study also aims to see the functional group of natural dye from jamblang and gadung fruit. the extracts of jamblang and gadung fruits was made using ethanol solven: aquadest: acetic acid in the ratio 50:42:8 ml concentration. characterization of dye was done using uv-vis spectrophotometer to see absorption properties and ftir spectroscopy to see the functions group. the results from uv-vis shows that dye made from the jamblang fruit was able to absorb the maximum wavelength of 528 nm, meanwhile the maximum wavelength of gadung absorption was 523.50 nm. on the other hand, the dye from mix both of jamblang and gadung fruit was able to absorbs at 523 nm of maximum wavelength. the range of dye light absorption for jamblang fruit extract was 528-586 nm, for gadung fruit was from 523.50 to 580 nm, and for the mix of both of them was 523-578 nm. the light absorption jamblang, gadung fruit, and mix both of them the were 1.389, 0.252, and 0.309 respectively. the result showed that the dye from jamblang fruit extracts has the widest value for range of light and also has the value for the light absorption. the results of ft-ir from the third sample shows the presence of hydroxyl compounds (o-h) and carbonyl (c=o), that made this dye has possibility to be applied in dssc. keywords: dssc, natural dye, jamblang fruit, fruit gadung, and absorption of

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