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All Journal Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Prosiding Semnastek KOVALEN: Jurnal Riset Kimia Chimica et Natura Acta FLUIDA Indonesian Journal of Chemical Analysis (IJCA) J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Fullerene Journal of Chemistry Equilibrium Journal of Chemical Engineering REACTOR : Journal of Research On Chemistry And Engineering Industrial Research Workshop and National Seminar Jurnal Rekayasa Proses
Mentik Hulupi
Jurusan Teknik Kimia, Politeknik Negeri Bandung
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Other

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Formulasi dan Evaluasi Sabun Cair Pencuci Tangan melalui Pemanfaatan Ekstrak Etanol Kopi Robusta sebagai Antibakteri Abdulloh, Harris; Azzahra, Nasya; Abdulloh, Sudrajat Harris; Hulupi, Mentik
Prosiding Industrial Research Workshop and National Seminar Vol. 16 No. 1 (2025): Vol. 16 No. 1 (2025): Prosiding 16th Industrial Research Workshop and National
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v16i1.6678

Abstract

Penularan bakteri melalui tangan merupakan salah satu jalur utama penyebaran penyakit, sehingga diperlukan inovasi sabun cuci tangan yang tidak hanya membersihkan, tetapi juga bersifat antibakteri. Penelitian ini bertujuan untuk memanfaatkan ekstrak etanol kopi robusta sebagai zat antibakteri pada formulasi sabun cuci tangan terhadap pertumbuhan bakteri Staphylococcus aureus dan Escherichia coli yang sering ditularkan melalui tangan. Sabun diformulasikan dengan penambahan konsentrasi ekstrak 0%, 2%, 4%, dan 6%. Parameter pengujian sediaan sabun meliputi uji berdasarkan SNI-2588-2017 yaitu uji pH, total bahan aktif, bahan tidak larut etanol, alkali bebas, serta tambahan uji viskositas, tinggi busa, stabilitas, dan uji antibakteri. Hasil menunjukkan formulasi sabun dengan penambahan ekstrak etanol kopi robusta belum memenuhi SNI-2588-2017 karena nilai alkali bebas dan bahan tidak larut etanol melebihi batas yang ditentukan. Tetapi ekstrak etanol kopi robusta pada sabun memberikan aktivitas antibakteri terhadap bakteri Staphylococcus aureus dan Escherichia coli dengan kategori kuat dengan aktivitas antibakteri terbaik pada konsentrasi 6%.
Ekstrak Etanol Daun Binahong (Anredera cordifolia) sebagai Zat Aktif Antibakteri terhadap Staphylococcus aureus dan Pseudomonas aeruginosa dalam Sabun Mandi Cair Utami, Naila Rahma; Ardiantina, Tiana; Abdulloh, Sudrajat Harris; Hulupi, Mentik
Prosiding Industrial Research Workshop and National Seminar Vol. 16 No. 1 (2025): Vol. 16 No. 1 (2025): Prosiding 16th Industrial Research Workshop and National
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v16i1.6679

Abstract

Sediaan yang bermanfaat membersihkan tubuh dan mengandung berbagai senyawa yang berperan sebagai antibakteri, seperti flavonoid, tanin, dan saponin adalah sabun mandi cair ekstrak daun binahong. Penelitian bertujuan untuk memformulasikan, menganalisis pengaruh, dan menentukan konsentrasi optimum penambahan ekstrak daun binahong pada pembuatan sabun mandi cair. Variasi ekstrak daun binahong dibuat sebesar 4%, 8%, dan 12% menggunakan pelarut etanol 96%, rasio 1:10 (b/v), dan maserasi selama 3 × 24 jam. Uji antibakteri menggunakan metode cakram difusi agar yang menghasilkan zona hambat berturut turut 9,5 mm; 13 mm; dan 12 mm untuk S. aureus; serta 9 mm; 11,5 mm; dan 10 mm untuk P. aeruginosa. Karakterisasi sesuai dengan SNI 4085-2017, pH bernilai 8,0 – 8,9; alkali bebas 0,03 – 0,19%; dan total bahan aktif 24,39 – 35,32%. Uji organoleptik sampel berwarna hijau, kental, lembut, dan beraroma parfum sedikit aroma ekstrak. Viskositas bernilai 342 – 707,7 cPs; massa jenis bernilai 1,058 – 1,099 g/ml; dan stabilitas busa bernilai 36 – 53,5 mm. Penelitian membuktikan sabun mandi cair ekstrak daun binahong memberikan efek antibakteri dengan konsentrasi optimum penambahan esktrak 8% terhadap S. aureus dan P. aeruginosa. Sabun memenuhi syarat sediaan fisik dan SNI 4085-2017, tetapi pengujian viskositas penambahan ekstrak 8% serta pengujian alkali bebas penambahan esktrak 8% dan 12% tidak memenuhi standar.
Sintesis Carbon Nanodots dari Molase Menggunakan Metode Pemanasan Terbantukan Gelombang Mikro Hulupi, Mentik; Nabilah, Nida; Nabilah, Tiana Hasna; Keryanti, Keryanti; Abdilah, Fauzi
Equilibrium Journal of Chemical Engineering Vol 6, No 1 (2022): Volume 6, No 1 July 2022
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v6i1.61212

Abstract

ABSTRAK. Carbon nanodots (CNDs) merupakan nanomaterial yang berukuran dibawah 10 nm. CNDs memiliki keunggulan diantaranya yaitu fotostabilitas tinggi, biokompatibilitas baik, toksisitas yang rendah, mudah dibuat, dan ramah lingkungan. Sumber karbon yang digunakan berasal dari molase karena murah dan mudah didapat serta merupakan hasil samping dari pengolahan tebu. Pada penelitian ini digunakan metode pemanasan terbantukan gelombang mikro atau Microwave Assisted Extraction (MAE) yang memberikan hasil suspensi yang homogen, pemanasan efisien, dan waktu yang singkat. Waktu iradiasi mempengaruhi energi gap CNDs dari molase yang dihasilkan. Waktu yang optimum untuk sintesis CNDs dari molase menggunakan metode MAE yaitu selama 3 menit. Efek fluoresensi telah diamati untuk suspensi CNDs yang mengubah warna kuning menjadi warna biru dibawah sinar UV 366 nm. Karakterisasi menggunakan spektrofotometri UV-Vis menunjukan serapan maksimum CNDs dari molase pada panjang gelombang 255 nm dengan energi gap sebesar 4,55 eV.Kata kunci: Carbon Nanodots, Microwave, MolaseABSTRACT. Carbon nanodots (CNDs) are nanomaterials with a size below 10 nm. CNDs have advantages such as high photostability, good biocompatibility, low toxicity, easy to manufacture, and environmentally friendly. The carbon source used comes from molasses because it is cheap and easy to obtain and is a by-product of sugarcane processing. In this study, the Microwave Assisted Extraction (MAE) method was used which gave homogeneous suspension results, efficient heating, and short time. The irradiation time affects the energy gap of the CNDs of the molasses produced. The optimum time for the synthesis of CNDs from molasses using the MAE method is 3 minutes. Fluorescence effects have been observed for suspensions of CNDs which turn yellow to blue under 366 nm UV light. Characterization using UV-Vis spectrophotometry showed the maximum absorption of CNDs from molasses at a wavelength of 255 nm with an energy gap of 4.55 eV.Keywords: Carbon Nanodots, Microwave, Molasses 
Validation of Methylene Blue Analysis Method in Wastewater Samples by UV-Vis Spectrophotometry Hulupi, Mentik; Keryanti, Keryanti; Rahmawati, Karina Aulia; Dewi, Widya Tresna; Abdilah, Fauzi
Equilibrium Journal of Chemical Engineering Vol 7, No 2 (2023): Volume 7, No 2 December 2023
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v7i2.75807

Abstract

Abstract. Methylene blue (MB) is an extensively utilized cationic dye in the textile industry. MB is, however, a highly noxious substance that can have detrimental effects on both the environment and human health. MB can pollute waterways and cause the mortality of aquatic organisms in the environment. Due to the hazards posed by MB, it is crucial to have an effective method for analyzing its concentration in wastewater. This will ensure that MB-contaminated water is appropriately treated and disposed of, thereby protecting the environment and human health. One of the analyses utilized the Evolution 360 UV-Vis Spectrophotometer to determine methylene blue concentrations. The Evolution 360 UV-Vis Spectrophotometer method was validated by measuring linearity tests, limit detection and quantization, precision, and accuracy. The R-value for linearity measurements is greater than 0.99, indicating that the method is proportionally validated. As required, the precision measurement yields acceptable results, with a %RSD value of less than 2%, and the accuracy measurement yields a recovery of 100% (between 80 and 110%). So that the method for measuring the concentration of methylene blue in water using the UV-Vis Evolution 360 Spectrophotometer satisfies the requirements for linearity, precision, and accuracy.Keywords:Analysis, Methylene Blue, Method Validation, Spectrophotometer
EM4 Effect on Macronutrients and Microbial Growth in Liquid Organic Fertilizer from Cibogo Market Waste Dewi Widyabudiningsih; Kardian Rinaldi; Fachrel Muhammad Firdaus; Rafli Rizki Fauzi; Mentik Hulupi
Fluida Vol. 18 No. 1 (2025): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v18i1.6050

Abstract

Waste represents a major environmental concern due to its contribution to pollution. According to the Ministry of Environment and Forestry, organic waste comprised 51.63% of total waste in Indonesia. This highlights the potential for converting organic waste into liquid organic fertilizer (LOF) through anaerobic fermentation. This study aimed to determine the relationship between macronutrient content and microbial growth in LOF and to determine the optimum fermentation time for producing LOF. LOF was made using organic waste from Cibogo market, including green vegetable waste and fruit peels banana, mango, and pineapple). The research was conducted using reactor which contained 5 kg of green vegetable waste and 5 kg of fruit peels, supplemented with EM4 bioactivator (200, 250, and 300 mL), water, and brown sugar. Samples were analyzed on days 0, 7, 14, 21, and 28. Chemical parameters measured included nitrogen, phosphorus, C-organic, and potassium content, and microbial analysis was conducted to determine the role of microorganisms in the fermentation process. Results showed that the optimal fermentation time for LOF production was seven days, corresponding to the peak concentrations of NPK and C-organic. However, further optimization of EM4 volume and the ratio between waste and bioactivator is required, since the nutrient levels remain below the recommended standard. Moreover, the correlation between microbial population and nutrient availability requires further research, particularly with respect to the quantity of EM4 applied.
Sintesis dan Karakterisasi SiO2@C dari Sekam Padi Sebagai Anoda Baterai Litium: - Joko Suryadi; Eko Andrijanto; Mentik Hulupi; Shafira Salsabilla; Hani Hanifah
Fluida Vol. 18 No. 2 (2025): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v18i2.6560

Abstract

The rapid development of technology systems today has triggered a demand for battery development as energy storage. Utilizing the abundant biomass in Indonesia can meet commercial demands, one of which is rice husk. Rice husk is the protective layer that encases rice grains, containing holocellulose (55%), lignin (20%), SiO2 (20%), and minerals (5%), and has the potential to be used as a precursor for silica and carbon to create SiO2@C nanocomposites. In this study, SiO2@C composites were synthesized as lithium battery anode materials from rice husk using a calcination method and the addition of NaOH to form a porous morphology. The calcination process was carried out at 800℃ for 1 hour with a mass ratio of SP-C (Rice Husk Carbonization) and NaOH (1:1, 1:2, and 1:3). The synthesized SiO2@C composites exhibited a porous morphology within the mesopore size range of 13,94 nm at a 1:1 ratio and contained Si 2,42%, O 9,72%, and 87,86%. The mass ratio of NaOH addition can influence the surface area of the SiO2@C composites, with yields of 392,00 m2/g for 1:1 ratio, 1023,04 m2/g for the 1:2 ratio, and 1756,63 m2/g for the 1:3 ratio.
Characterization of caffeine crystals obtained from the extraction process of green robusta coffee beans Tri Hariyadi; Ayu Ratna Permanasari; Iwan Ridwan; Bambang Soeswanto; Teguh Taufiqurohim; Unung Leoanggraini; Fania Hidayati; Renata Naomi Cinta Sedjati; Mentik Hulupi
Jurnal Rekayasa Proses Vol 20 No 1 (2026): Volume 20, Number 1, 2026
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.24765

Abstract

Robusta coffee contains a higher caffeine content, ranging from 1.6–2.4%, nearly twice as much as Arabica coffee, which contains only 0.9–1.2%. Caffeine content is widely utilized in various fields, such as pharmaceuticals and the food and beverage industry. This study aims to analyze the effect of temperature and time on the solid–liquid extraction process of green coffee beans, as well as to evaluate the effectiveness of two different solvents in the liquid–liquid extraction process for obtaining caffeine crystals. Solid–liquid extraction was carried out at temperature variations of 70°C, 80°C, 90°C, and 97°C, with durations of 30 minutes, 45 minutes, 60 minutes, 75 minutes, and 90 minutes. Liquid–liquid extraction was performed using two types of organic solvents, namely chloroform and dichloromethane. The results were analyzed by measuring caffeine purity using a melting point apparatus and high-performance liquid chromatography (HPLC) based on retention time parameters, as well as determining caffeine concentration using a UV–Vis spectrophotometer. The optimum temperature and time for solid–liquid extraction were found to be 97°C for 60 minutes. Liquid–liquid extraction yielded a caffeine content of 2.18 mg/g using chloroform, and 1.38 mg/g using dichloromethane. Based on melting point and HPLC retention time testing, the caffeine crystals obtained from liquid–liquid extraction with dichloromethane showed higher purity, with a melting point of 236°C and a retention time of 2.06 minutes. These values are close to those of pure caffeine, which has a melting point of 236°C and a retention time of 2.01 minutes, compared to the caffeine crystals obtained using chloroform.
Co-Authors Abdilah, Fauzi Abdulloh, Harris Ade Suherman Andrijanto, Eko Ardiantina, Tiana Azzahra, Nasya Badra Sanditya Rattyananda Bambang Soeswanto Dessy Cartika Dewi, Widya Tresna Duyeh Setiawan Fachrel Muhammad Firdaus Fania Hidayati Fauzi Abdilah Hani Hanifah Haryadi, Haryadi Iswahyudi Iswahyudi Iwan Ridwan Kardian Rinaldi Karina Aulia Rahmawati Keryanti, Keryanti Lili Indrawati Muhamad Basit Febrian Nabila Sofiyani Nabilah, Nida Nabilah, Tiana Hasana Nabilah, Tiana Hasna Nancy Siti Djenar Ngatin, Agustinus Nida Nabilah Permanasari, Ayu Ratna Rafli Rizki Fauzi Rahmawati, Karina Aulia Renata Naomi Cinta Sedjati Retno Indarti Riniati Rizka Amalia Nuriana Shafira Salsabilla Shalihatunnisa Shalihatunnisa Siti Fauziah Sudrajat Harris Abdulloh Suryadi, Joko Teguh Taufiqurohim Tiana Hasna Nabilah Titin Sri Mulyati Tri Hariyadi Troskialina, Lina Unung Leoanggraini Utami, Naila Rahma Widya Tresna Dewi Widyabudiningsih, Dewi Winda Putri Silpia Yusuf Sofyan