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Journal : Jurnal Multidisiplin Madani (MUDIMA)

Potensi Eceng Gondok (Eichhornia Crassiper) Sebagai Kalorimetri Kation dan Anion Nurmala Sari
Jurnal Multidisiplin Madani Vol. 2 No. 3 (2022): March 2022
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (494.286 KB)

Abstract

One of the compounds contained in water hyacinth is delhinidine 3-diglucosin. The compound is a compound that has the potential as a sensor for cations and anions because it has active groups, namely OH- and O. This study used the maceration method, then several tests were carried out, which obtained a water content of 10.24% and an ash content of 14.67%. The solvatochromic test on distilled water, methanol and acetone showed that there was a bathochromic shift and a hipsochromic shift. Meanwhile, the ionochromic qualitative test showed that the identification of cations was better than the anion test. The cation results showed that in distilled water (Yellow), water hyacinth could identify Cu2+ and Fe3+ (Green), in methanol solvent (Green) for Fe3+ metal (Yellow) while in acetone solvent (Green) it could identify Pb2+, and Fe3+ ( Yellow).
Perbandingan Nilai Persen Transmisi Eritema dan Pigmentasi Dengan Metode Maserasi dan Infusa Kopi Robusta (Coffea Canephora Pierre A. Frohner) Yang Berasal Dari Kabupaten Tana Toraja Gina Yustika Rijar; Nurmala Sari; Ahmad Irsyad Aliah
Jurnal Multidisiplin Madani Vol. 2 No. 6 (2022): June 2022
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/mudima.v2i6.443

Abstract

This research was conducted to determine the comparison of the present value of erythema transmission (%Te) for UV A and pigmentation (%Tp) for UV B using the cold method (maceration) and the hot method (infusion) of Robusta coffee using the spectrophotometric method. Sample extraction was carried out, then dilution was carried out on the ethanol extract and infusion at concentrations of 100 ppm, 120 ppm, 140 ppm, 160 ppm and 180 ppm, and obtained %Te, namely the extract concentration of 100 ppm including Fast tanning category, 120 ppm extra suntan category, concentration 140, 160, 180 ppm in the category of extra protection and % Tp all concentrations in the category of sunblock. the infusion has not reached the category of %Te and %Tp infusion of fast tanning category for concentrations of 100, 120, 140, 160 ppm and extra suntan at a concentration of 180 ppm.