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All Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Pengabdian UntukMu NegeRI Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi
Nova Yuliasari
Jurusan Kimia, Universitas Sriwijaya, Sumatera Selatan, Indonesia
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Peningkatan Kesehatan Masyarakat dengan Pembuatan Cairan Fermentasi dari Limbah Sayur dan Buah sebagai Obat Kumur dan Obat Aneka Luka Fahma Riyanti; Desnelli, Desnelli; Nova Yuliasari; Fatma, Fatma; Julinar, Julinar
ABDIKAN: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Vol. 3 No. 2 (2024): Mei 2024
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/abdikan.v3i2.3112

Abstract

The liquid product resulting from fermentation of leftover vegetables and fruit that is still fresh and not rotten for approximately 100 days has the characteristics of being brown in color, has an aroma like vinegar or fresh sourness and a very acidic pH, namely less than 4. This fermented product contains acertic acid and lactic acid and is a natural antimicrobial source, so it has antibacterial and anti-fungal capabilities. This antibacterial activity can inhibit the activity of bacteria that cause tooth decay such as L.acidophilus and S.mutans bacteria so it can be used as a mouthwash. The wound healing process can be accelerated due to the presence of antibacterial compounds by stimulating the body's immune response. So that this fermented liquid can be used as a wound medicine. Community service activities in the form of counseling, practice of making fermented liquid and providing ready-made products are topics carried out at RT 07 LK IV, Timbangan Indralaya Utara, Ogan Ilir Sumatera Sealatan. The counseling participants were mothers and young women, estimated to be 15 - 25 people. To make it easier for the extension participants to understand and the aim of the activity to be achieved, a demonstration was carried out on making fermentation liquid, harvesting F2 products with mint leaves for gargling and distributing the product. The extension participants were very enthusiastic about participating in the activity, seen from the many questions asked.
Sosialisasi Teknik Penggunaan dan Jenis Cairan Pemotongan untuk Pemesinan Hijau Di Industri Kecil Mesin Perkakas Yanis, Muhammad; Amrifan Saladin Mohruni; Aneka Firdaus; Nova Yuliasari
Jurnal Pengabdian UntukMu NegeRI Vol. 9 No. 2 (2025): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v9i2.9386

Abstract

Pemesinan hijau tidak hanya harus dipahami dan dilaksanakan oleh industri pemesinan berskala besar dan sedang, namun juga bagi industri kecil. Hal ini penting karena isu global ini menyangkut masalah kesehatan dan lingkungan yang berkelanjutan yang merupakan tanggung jawab bersama. Salah satu penerapan pemesinan hijau ini adalah penggunaan cairan pemotongan. Cairan pemotongan yang digunakan di industri kecil mesin perkakas umumnya berasal dari minyak mineral, pemakaian dengan dikucurkan secara berlebihan dan pembuangan secara langsung ke lingkungan. Hal ini akan berdampak terhadap kesehatan dan merusak lingkungan. Melalui kegiatan pengabdian ini dilakukan sosialisasi ke industri kecil mesin perkakas tentang pemesinan hijau. Pelaksanaan kegiatan dipusatkan pada industri kecil mitra yaitu bengkel bubut Tris Palembang dalam satu hari kerja. Sosialisasi dalam bentuk ceramah, diskusi dan penjelasan di mesin bubut mitra. Selain pimpinan dan karyawan bengkel mitra, kegiatan dihadiri juga peserta undangan dan mahasiswa. Keberhasilan kegiatan ini terlihat dari respon positif yang tinggi dari peserta berupa tanggapan dan pertanyaan yang disampaikan kepada tim pelaksana. Dan dari evaluasi terhadap materi yang disampaikan menunjukkan peningkatan pemahaman rata-rata 41,81% diakhir pelaksanaan dibanding pada awal kegiatan. Bagi bengkel mitra sendiri kegiatan sosialisasi ini sangat bermanfaat untuk meningkatkan kinerja bengkelnya.
Synthesis and Characterization of Schiff Base Compound Benzaldehyde- 2,4-Dinitrophenylhydrazone as a Carbonate Anion Sensor Arina Musyrifah; Nurlisa Hidayati; Nova Yuliasari
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 3 (2025): October 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v10.i3.198

Abstract

Benzaldehyde-2,4-dinitrophenylhydrazone was synthesized via  the condensation of benzaldehyde with 2,4- dinitrophenylhydrazine. The product was analyzed using UV–Vis and FT-IR spectroscopy, and its solvatochromic properties were investigated in DMF, acetone, and ethanol. Its application as a carbonate anion sensor was evaluated under optimized conditions. Schiff base formed orange crystalline solids with a 91.86% yield. UV-Vis spectra showed maximum absorption wavelength at 260 nm (π-π*) and 390 nm (n-π*). FT-IR analysis proves the presence of azomethine band (HC=N) at 1618 cm-1 and the shift of the N-H stretching band region from 3325 to 3284 cm-1. Among the solvents studied, DMF exhibited the highest solubility and color stability, acetone showed the greatest absorbance but poor stability, and ethanol showed low solubility with the formation of a precipitate. Functioning as a carbonate anion sensor, the Schiff base exhibited a noticeable color change from yellow to red, along with a bathochromic shift from 390 nm to 495 nm (π→π*), reaching its maximum response after 30 minutes.
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 Amrifan Saladin Mohruni Aneka Firdaus Arina Musyrifah Desnelli Desnelli Desnelli Desnelli Erika Dhamayanti Fahma Riyanti Fatma Julinar Julinar Muhammad Said Muhammad Yanis Nurlisa Hidayati Umi Nurlailia