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All Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia
Desnelli Desnelli
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions

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Introduksi Lipstik Cair dari Umbi Buah Bit (Beta vulgaris L.) di Pasantren Putri Miksusanti Miksusanti; Azhar Kholiq; Aldes Lesbani; Endri Junaidi; Risfidian Mohadi; Neza Rahayu; Desnelli Desnelli; Syaflina Lamin
Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia Vol. 3 No. 1 (2024): Maret : Jurnal Hasil Pengabdian Masyarakat Indonesia
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/karunia.v3i1.2008

Abstract

A community service scheme for implementing science and technology has been carried out from Srwiijaya University funding sources. Community service is carried out at the Ittifaqiah Islamic Boarding School for women in Indralaya, Ogan Ilir, South Sumatra. Participants who attended were 60 Islamic boarding school students in the science class, 10 science teachers and 2 Ittifaqiah administrators. Community service was carried out using lecture methods and demonstrations of making liquid lipstick in front of female students and teachers. The natural ingredients used in making lipstick in this service activity are beet root extract, virgin coconat oil (VCO), soy lecithin, gum Arabic, food flavors and food preservatives. There were 20 organoleptic tests carried out on Unsri female students on the liquid lipstick made in this service activity. Fifteen people said they really liked it, 3 people said they liked it quite a lot and 2 people said they liked the product a little. The survey on the results of service activities showed that 50 female students said they really understood how to make liquid lipstick, 8 students said they understood quite well how to make liquid lipstick with the red color of beetroot and 2 female students said they understood a little.
Synthesis and Characterization of Schiff Base from 4,4-Diaminodiphenyl Ether and Vanillin and its Interaction with Cu2+ Metal Ion Nurlisa Hidayati; Erika Dhamayanti; Desnelli Desnelli; Muhammad Said; Nova Yuliasari; Umi Nurlailia
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 9, No 3 (2024): October 2024
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v9.i3.163

Abstract

The Schiff base has synthesized from the reaction between 4,4-diaminodiphenyl ether and vanillin. The resulting Schiff base acts as a ligand and interacts with Cu2+ metal ions to form a complex compound. The Schiff base was analyzed using UV-visible and FT-IR spectroscopy, as well as X-ray diffraction (XRD). The stability of the Schiff base under different pH conditions was investigated, along with the interference effects of Cd2+ and Zn2+ ions on the formation of Schiff base complexes with Cu2+. The formation of a yellow solid crystal indicated the successful synthesis of the Schiff base. The appearance of maximum absorption at 250 nm on the UV-Vis spectra signifies the electronic transition from π to π*. Absorption spectra at 1600 cm-1 indicate the presence of an azomethine group. The diffraction pattern showed a sharp peak at an angle of 2θ= 19.301°, 51.04° for the Schiff base 4,4-diamino diphenyl ether-vanillin. Schiff base compounds exhibit the highest stability at pH 5, where the C=N double bond formed is more stable than other pH. Schiff base ligands form complexes with Cu2+ metal ions, characterized by absorption in the charge transfer region (LMCT) at λ 400 nm and the d-d transition at λ 630 nm. The presence of Cd²⁺ and Zn²⁺ metal ions shifting absorption of the Schiff Base-Cu²⁺ ligand complex towards shorter wavelengths (hypsochromic effect)
Co-Authors Aldes Lesbani Azhar Kholiq Endri Junaidi Erika Dhamayanti Miksusanti Miksusanti Muhammad Said Neza Rahayu Nova Yuliasari Nurlisa Hidayati Risfidian Mohadi Syaflina Lamin Umi Nurlailia