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All Journal Indonesian Green Technology Journal The Journal of Pure and Applied Chemistry Research Bubungan Tinggi: Jurnal Pengabdian Masyarakat
Ulfa Andayani
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Engineering Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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Pengenalan Analisis Kualitatif Skala Mikro kepada Guru SMK Perkumpulan Pendidik Sains Kimia Indonesia (PPSKI) Layta Dinira; Ulfa Andayani; Adam Wiryawan; Ani Mulyasuryani
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 4, No 4 (2022)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v4i4.6622

Abstract

Keterbatasan alat dan bahan praktikum merupakan permasalahan yang dihadapi oleh guru kimia di SMK. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan kreativitas guru SMK dalam mengatasi masalah tersebut. Guru SMK diberikan pembinaan praktikum pengenalan analisis kualitatif skala mikro. Kegiatan dilaksanakan dalam beberapa tahap, yaitu tahap persiapan, tahap pelaksanaan, dan tahap evaluasi. Tahap persiapan terdiri atas penyusunan diktat praktikum, persiapan alat dan bahan percobaan, pembuatan video praktik, serta pembuatan kuesioner. Tahap pelaksanaan berupa praktikum analisis kualitatif skala mikro dengan empat topik. Tahap evaluasi dilakukan dengan cara menilai tugas presentasi dan mengolah kuesioner berisi tanggapan peserta. Analisis data tersebut dilakukan secara deskriptif. Kegiatan pengabdian kepada masyarakat dilaksanakan pada tanggal 27 Juni 2022 hingga 20 Agustus 2022. Hasil kegiatan menunjukkan peserta dapat mendemonstrasikan praktikum pengenalan analisis kualitatif skala mikro dan kegiatan telah berlangsung dengan baik. Setelah mengikuti kegiatan ini, peserta dapat mengembangkan materi praktikum skala mikro sesuai kondisi di sekolah masing-masing sehingga keterbatasan alat dan bahan dapat diatasi.Chemistry teachers in vocational high schools face challenges due to practicum equipment and chemical limitations. The objective of this community service is to increase the creativity of vocational high school teachers in addressing this issue. Participants have enrolled in a practicum on microscale qualitative analysis. Preparation, implementation, and evaluation were the three stages of the activity. Making a practicum module, getting chemicals and equipment ready for experiments, filming practical videos, and creating questionnaires were all part of the preparation process. The implementation step was delivered as a four-topic microscale qualitative analysis practicum. The evaluation step was completed by evaluating the presentation tasks and descriptively analyzing the participants' questionnaire responses. The community service was performed between June 27th and August 20th, 2022. The results showed that participants could demonstrate microscale qualitative analysis. The community service was performed well. Following the community service, participants can create micro-scale practicum material based on their schools' conditions, overcoming equipment and materials limitations.
Effect of Eco-Enzyme’s Storage Duration on Hydrogen Peroxide Level and Its Antibacterial Activity Primarista, Ni Putu; Imam Abu Hanifah; Arie Srihadyastutie; Sasangka Prasetyawan; Ulfa Andayani; Tri Adyati
Indonesian Green Technology Journal Vol. 12 No. 1 (2023)
Publisher : Sekolah Pascasarjana, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2023.012.01.03

Abstract

Eco-enzyme is a filtrate produced by fermenting sugar and a mixture of organic matter for 3 months. Eco-enzymes have been widely used as cleaning fluids and disinfectants. This study aims to investigate the levels of hydrogen peroxide and the antibacterial activity of eco-enzymes stored at different times. Hydrogen peroxide level was analyzed by redox titration and the antibacterial activity against Escherichia coli and Staphylococcus aureus was analyzed by paper disc method. This study shows that there were significant differences in the levels of hydrogen peroxide and the antibacterial activity of the eco-enzymes stored for a certain time. Hydrogen peroxide levels increased from 0 months of storage to reach the highest point at 10 months of storage with 2664.9 ppm and then it began to decrease to the lowest point at 114 months of storage. The highest antibacterial activity against Escherichia coli and Staphylococcus aureus was shown by eco-enzyme stored for 0 months, with inhibitory zones of 6.37 mm and 6.59 mm, respectively. Eco-enzyme no longer showed antibacterial activity after 15 months of storage. Overall, the storage duration of the eco-enzyme affects the hydrogen peroxide level and antibacterial activity against Escherichia coli and Staphylococcus aureus due to the amount of lactic acid bacteria in the eco-enzyme. Keywords: antibacterial activity, eco enzyme, hydrogen peroxide, storage duration
The Effect of Surfactant on the Characteristics of Curcumin-Loaded Nanostructured Lipid Carriers: Fluorescence and Stability Study Mega Nurul Madania; Zubaidah Ningsih; Anastasia Fitria Devi; Diah Mardiana; Ulfa Andayani
The Journal of Pure and Applied Chemistry Research Vol. 14 No. 1 (2025): Edition January-April 2025
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2025.014.01.7933

Abstract

Curcumin, a bioactive compound derived from Curcuma longa, offers significant pharmacological benefits such as antioxidant, anti-inflammatory, and anticancer properties. However, its therapeutic application is restricted due to poor water solubility, low systemic bioavailability, and limited skin penetration. This study explores the use of Nanostructured Lipid Carriers (NLCs) as a drug delivery system to improve curcumin's stability and permeability. Two formulations were developed: NLC-KUR-T80, which encapsulates curcumin using the non-ionic surfactant Tween 80, and NLC-KUR-CTAB, which uses the cationic surfactant CTAB. Both formulations were prepared using the Phase Inversion Temperature (PIT) method and characterized for particle size, polydispersity index (PI), zeta potential, encapsulation efficiency (EE%), and fluorescence properties. Results revealed that CUR-NLC-CTAB exhibited a larger particle size (1410 ± 183 nm), higher zeta potential (78.70 ± 0.67 mV), and significantly better encapsulation efficiency (27.33 ± 3.33%) compared to CUR-NLC-T80. Fluorescence studies demonstrated that curcumin within NLC-CTAB had enhanced fluorescence intensity, indicating better stability and distribution within the lipid matrix.
Co-Authors Adam Wiryawan Anastasia Fitria Devi Ani Mulyasuryani Arie Srihadyastutie Diah Mardiana Imam Abu Hanifah Layta Dinira Mega Nurul Madania Primarista, Ni Putu Sasangka Prasetyawan Tri Adyati Zubaidah Ningsih