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All Journal Jurnal Rekayasa Proses Journal of Science and Applicative Technology Jurnal Rekayasa Proses Indonesian Journal of Chemical Analysis (IJCA) Jurnal Inovasi Teknik Kimia Jurnal Fisika Indonesia Jurnal Pengabdian Masyarakat Bhinneka Jurnal Pengabdian Masyarakat Bangsa Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Rekayasa Proses Jurnal Pengabdian kepada Masyarakat Multidisiplin (JUPENGEN)
Idra Herlina
Program Studi Kimia, Institut Teknologi Sumatera, Lampung Selatan, Indonesia, 35365
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences

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MOF-199 and Ni-BTC: Synthesis, Physicochemical Properties, and Catalytic Activity in Oxidation of 5-Hydroxymethylfurfural Herlina, Idra; Krisnandi, Yuni Krisyuningsih; Ridwan, Muhammad
Bulletin of Chemical Reaction Engineering & Catalysis 2023: BCREC Volume 18 Issue 4 Year 2023 (December 2023)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20060

Abstract

Platform chemical 2,5-furandicarboxylic acid (FDCA) has potential applications to replace petroleum-based chemicals. Metal Organic Framework (MOF) can be used as a catalyst to oxidize 5-hydroxymethylfurfural (HMF), producing FDCA. MOF-199 and Ni-BTC were synthesized using solvothermal method with trimesic acid (benzene 1,3,5-tricarboxylic acid/H3BTC) as a linker and Cu or Ni as a metal nod. The physical and chemical properties of catalysts were discovered through characterization using  X-ray Diffraction (XRD), Fourier Transform Infra Red  (FT-IR), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy - Energy Dispersive X-ray (SEM-EDX), and Ammonia Temperature-programmed Desorption (NH3-TPD). FDCA and its intermediate compounds were produced by converting HMF to FDCA in a small glass batch reactor. The yields of products were then determined by High-Performance Liquid Chromatography (HPLC). HPLC results indicated that there was no DFF (2,5-diformylfuran) signal, indicating that FDCA was formed by FFCA (5-formylfuroic acid) and HMFCA (5-hydroxymethylfuroic acid) formation reaction pathway. The maximum conversion (71%) was obtained using Ni-BTC as a catalyst at 130 °C for 5 h, with FDCA yield of 61.8%. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Development Of Qr Code-Based Digital Audio Tourism As A Cultural Education Media In Sumpang Bita Archaeological Park Dharu Cahyoaji Sasongko; Jarwinda; Teny Sylvia; Idra Herlina
Jurnal Pengabdian Kepada Masyarakat Multi Disiplin Vol. 3 No. 1 (2026): JUPENGEN - Februari
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jupengen.v3i1.1203

Abstract

The Sumpang Bita Archaeological Park in Pangkep Regency, South Sulawesi, is a prehistoric rock art site with important archaeological value, but interpretation facilities are still limited, preventing visitors from gaining adequate contextual understanding. This study aims to develop a QR code-based digital audio tour model as an educational, inclusive, and accessible interpretation medium for the Sumpang Bita Archaeological Park. The methods used included field observations with interviews with 20 visitors, the design of bilingual narrative content (Indonesian-English), and the implementation of the system through the installation of QR Codes at strategic points on the site. Survey results showed that 70% of respondents were unaware of the site's primary historical value, 65% considered supporting facilities very inade quate, and 100% stated that they needed additional guidance. The implementation of the audio tour system has been proven to improve access to information, expand audience reach, including groups with disabilities and speech impairments, and support the trend of digitalization of cultural tourism. While initial trials are limited by their small scale and internet network constraints, this model offers a cost-effective solution that can be replicated at other open archaeological sites. Thus, the development of QR code-based audio tours through the National Community Service Program provides a significant contribution to the preservation of cultural heritage while strengthening the educational experience and community involvement in the conservation of prehistoric sites.
Pemanfaatan Minyak Jelantah sebagai Bahan Baku Pembuatan Sabun dan Lilin Aromatherapi Demi Dama Yanti; Idra Herlina; Abdul Aji; Ahmad Anggraria Jaya Agung; Andika Setiawan; Gabriel Vanes Sabat Tuta
Jurnal Pengabdian Masyarakat Bhinneka Vol. 4 No. 4 (2026): Juli
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v4i3.1211

Abstract

Minyak goreng bekas yang biasa disebut sebagai minyak jelantah merupakan minyak sisa penggorengan yang telah digunakan berulang kali. Penggunaan minyak secara berulang dapat memberikan dampak buruk bagi kesehatan. Selain itu, minyak jelantah yang dibuang secara langsung dapat mencemari tanah dan sumber perairan. Kabar baiknya, minyak jelantah dapat diolah menjadi produk yang lebih bermanfaat, yaitu sabun dan lilin aromaterapi. Kegiatan ini bertujuan untuk memberikan pengetahuan kepada ibu-ibu PKK Desa Way Galih mengenai bahaya minyak jelantah bagi kesehatan manusia dan lingkungan, serta pemanfaatannya dalam pembuatan sabun dan lilin aromaterapi. Sebelum digunakan sebagai bahan baku pembuatan sabun dan lilin, minyak jelantah terlebih dahulu dijernihkan menggunakan arang aktif, kemudian disaring hingga diperoleh minyak yang lebih jernih. Sabun dibuat dengan mencampurkan minyak jelantah dengan NaOH dan bahan tambahan lainnya. Campuran tersebut diaduk hingga homogen, kemudian didiamkan hingga mengeras. Lilin dibuat dengan mencampurkan minyak jelantah dengan parafin, pewangi, dan pewarna. Campuran dipanaskan hingga homogen, lalu dituangkan ke dalam wadah lilin yang telah disiapkan. Peserta mengikuti kegiatan dengan antusias dan dapat mempraktikkan secara langsung proses pembuatan sabun dan lilin. Produk yang dihasilkan berupa sabun padat dan lilin aromaterapi beraroma serai. Berdasarkan hasil pretest dan posttest, kegiatan ini memberikan dampak yang signifikan, yang ditunjukkan oleh peningkatan pengetahuan dan keterampilan peserta.  
Uji Efektivitas Zeolit Alam Lampung Sebagai Agen Antibakteri Masker Wajah Terhadap Propionibacterium acnes Idra Herlina; Shekinah Glory Aurellia Siregar; Roja Riliyanda Putra; Anna Azzahra Ismail; Tiarmauli Natalia Purba; Ashyfa Ramadhani; Aditya Ayu Wulanda; Mariyam; Muhammad Yogi Saputra; Edwin Rizki Safitra
Jurnal Inovasi Teknik Kimia Vol. 11 No. 2 (2026): APRIL | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v11i2.15080

Abstract

Acne vulgaris is a common skin disorder caused by clogged pores and infection by Propionibacterium acnes. The use of synthetic chemicals in skincare products often leads to side effects, highlighting the need for safer and eco-friendly natural alternatives. Natural zeolite, particularly Lampung Natural Zeolite (ZAL), has potential as an antibacterial agent due to its porous structure and adsorption capacity. This study evaluates the effectiveness of ZAL as an active ingredient in clay mask formulations against P. acnes. ZAL was activated and purified, then formulated into masks with varying concentrations (2.5 g, 5 g, and 7.5 g). Characterization was conducted using IR, XRD, and SEM, while antibacterial activity was tested using the agar diffusion method. Activation improved crystallinity and increased silanol (Si–OH) groups, enhancing antibacterial performance. The 5 g zeolite formulation showed the largest inhibition zone, indicating optimal effectiveness. Overall, ZAL demonstrates strong potential as a natural antibacterial agent for facial mask products.
Penguatan Budaya Keselamatan Laboratorium melalui Pelatihan K3 bagi Siswa SMA IT Insan Mulia Boarding School Pringsewu Idra Herlina; Cindy Moyna Clara L.A.; Demi Dama Yanti; Mariyam Mariyam; M. Alvien Ghifari; Ahmad Anggraria Jaya Agung; M. Luqmanul Hakim Habibie
Jurnal Pengabdian Kepada Masyarakat Multi Disiplin Vol. 3 No. 3 (2026): JUPENGEN - Agustus
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jupengen.v3i3.1977

Abstract

School laboratories are essential for developing science process skills; however, their use must be accompanied by consistent occupational safety and health practices. This community service program aimed to improve students’ understanding and awareness of laboratory safety culture at SMA IT Insan Mulia Boarding School Pringsewu. The program involved coordination with the partner school, preparation of training materials and evaluation instruments, and an interactive training session on 14 April 2026. The materials covered basic laboratory safety, the 5R principles, hazard identification, simple risk assessment, and appropriate use of personal protective equipment. Evaluation was conducted descriptively by comparing the mean pre-test and post-test scores and observing participant engagement. The mean score increased from 86.60 to 90.50, representing a 3.90-point or 4.50% improvement. Participants also engaged actively in case discussions and demonstrated a better understanding of safe work behaviour. The school’s support in providing the venue, participants, and documentation strengthened implementation. The training offers an initial foundation for integrating safe working habits into routine school laboratory activities.
Optimization of Sequential Microwave–Ultrasound-Assisted Extraction of Turmeric (Curcuma longa L.) Using Response Surface Methodology and Evaluation of Its Antioxidant Activity Safitra, Edwin Rizki; Herlina , Idra; Saputri, Desi Riana; Fahni, Yunita; Damayanti, Damayanti; A'yuni, Dewi Qurrota; Serunting, Muhamad Allan
Indonesian Journal of Chemical Analysis (IJCA) Vol. 9 No. 2 (2026): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol9.iss2.art4

Abstract

Turmeric (Curcuma longa L.) is a natural source of curcuminoids, particularly curcumin, with potential applications in food, pharmaceutical, and cosmetic products. This study evaluated a two-stage microwave pretreatment-ultrasound- assisted extraction process for curcumin recovery from turmeric. Separate three-factor Box–Behnken designs were used to evaluate the effects of liquid-to-solid ratio (LSR), microwave power, and extraction time during microwave-assisted extraction (MAE), and the effects of LSR, extraction temperature, and sonication time during ultrasound-assisted extraction (UAE). Curcumin concentration was determined using UV–Vis spectrophotometry at 465 nm. The MAE model was significant (p < 0.0001) and showed that LSR was the most influential factor. The highest observed MAE yield was 6.354 mg g⁻¹ at an LSR of 5:1 mL g⁻¹, microwave power of 500 W, and extraction time of 1.5 min. The UAE model was also significant (p = 0.0089), with LSR and temperature significantly affecting curcumin yield. The highest observed UAE yield was 10.783 mg g⁻¹ at an LSR of 30:1 mL g⁻¹, 40 °C, and 5 min. The highest- yield extract exhibited an IC₅₀ value of 6.22 mg L⁻¹ in the DPPH assay. These results indicate that the two-stage extraction approach can improve curcumin recovery; however, independent validation experiments are required to confirm the predicted optimum conditions.
Co-Authors A'yuni, Dewi Qurrota Abdul Aji Aditya Ayu Wulanda Agung, Ahmad Anggraria Ahmad Ahmad Ahmad Anggraria Jaya Agung Ahmad Anggraria Jaya Agung Ahmad, Rizal Aji, Abdul Al Akbar, Fadhlur Rohman Andika Setiawan Anna Azzahra Ismail Arif Ashari Ashyfa Ramadhani Ayuwulanda, Aditya Cindy Moyna Clara L.A. Damayanti Damayanti Darmanto Darmanto Demi Dama Yanti Deni, Jose Fikrian Deska Lismawenning Puspitarum Dharu Cahyoaji Sasongko Dwi Cahyani Edwin Rizki Safitra Edwin Rizki Safitra Fahni, Yunita Gabriel Vanes Sabat Tuta Ghifari, M Alvien Hawa Purnama Celala Ary Cane I Putu Mahendra Indarto Indarto Jarwinda Latif Al Qadri M. Luqmanul Hakim Habibie Mariyam Mariyam Muhamad Allan Serunting Muhammad Ridwan Muhammad Yogi Saputra Nike Dwi Grevika Drantantiyas Nugraha, Septa Putri Okky Fajar Tri Maryana Prio Santoso Putranto, Reyhan Puji Qodri, M. Faisal Rahmat Kurniawan Rodiyah - Rofifah, Nabila Roja Riliyanda Putra Saputra, M. Yogi Saputri, Desi Riana Shekinah Glory Aurellia Siregar Simanjuntak, Regita Sudarmanto, Irwan Teny Sylvia Tiarmauli Natalia Purba Yuni Krisyuningsih Krisnandi Yuni Krisyuningsih Krisnandi