Article Per Year (5 Year)
p-Index From 2019 - 2024
0.778
P-Index
This Author published in this journals
All Journal Eksergi REACTOR : Journal of Research On Chemistry And Engineering Journal of Industrial Community Empowerment SAINTI: Majalah Ilmiah Teknologi Industri
Nurmalasari, Enny
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Produksi Asam Laktat Melalui Jalur Biologi dan Jalur Kimia Katalitik Menggunakan Berbagai Bahan Baku Aini, Apsari Puspita; Nurmalasari, Enny; Rasrendra, Carolus Borromeus; Sitompul, Johnner
Eksergi Vol 20, No 3 (2023)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v20i3.9768

Abstract

Aplikasi asam laktat pada berbagai industri menarik minat para peneliti untuk memproduksi asam laktat melalui berbagai jalur reaksi. Perolehan isomer asam lakat yang lebih murni dibandingkan dengan jalur reaksi kimia katalitik menjadikan jalur biologi dengan fermentasi menjadi jalur reaksi yang banyak dipakai di industri. Berbagai mikroorganisme pada golongan Lactic Acid Bacteria telah digunakan untuk memproduksi asam laktat baik dalam skala laboratorium maupun skala industri. Berbagai bahan baku dapat dikonversi menjadi asam laktat seperti, dihidroksi aseton, gliseraldehid, piruvaldehid, xilosa, glukosa, fruktosa, sukrosa, selulosa, insulin, selobiosa, pati, levoglukosan dan lignoselulosa. Kemampuan katalis dalam metode kimiawi menarik banyak minat peneliti untuk mencari alternatif pembuatan asam laktat yang bisa mengkonversi gula menjadi asam laktat dengan waktu reaksi yang lebih singkat. Penggunaan berbagai katalis mulai dari katalis homogen dan heterogen terbukti dapat menghasilkan asam laktat dengan yield yang bervariasi. Katalis lanthanum triflate terlihat menghasilkan asam laktat dengan perolehan yang baik walaupun dari bahan baku lignoselulosa yang perlu perlakuan awal terlebih dahulu karena mempunyai senyawa lignin yang bisa menghalangi kerja katalis.Kata Kunci: asam laktat; kimia katalitik; fermentasi; lignoselulosa  ABSTRACT: The utilization of lactic acid for various applications encourages researchers to produce lactic acid by various reaction pathways. The yield of lactic acid isomer which is purer than the catalytic chemical reaction makes the biological pathway by fermentation widely used in industry. Various microorganisms in the Lactic Acid Bacteria categories have been used to produce lactic acid both on a laboratory and industrial scale. Various raw materials can be converted into lactic acid such as dihydroxy acetone, glyceraldehyde, pyruvaldehyde, xylose, glucose, fructose, sucrose, cellulose, insulin, cellobiose, starch, levoglucosan and lignocellulose. The ability of catalyst has attracted interest of researcher to find alternatives for making lactic acid that can convert sugar into lactic acid with a shorter reaction time. The use of various catalysts from homogeneous and heterogeneous catalysts has been proven to produce lactic acid with varying results. The lanthanum triflate catalyst proven to produce lactic acid with a high yield, even though it is from lignocellulosic raw materials that need pre-treatment to remove lignin compounds which can inhibit the performance of the catalyst.Keywords: lactic acid; chemical catalytic; fermentation;  lignocellulose  
PERBANDINGAN RENDEMEN EKSTRAKSI KECOMBRANG (Etlingera elatior) MENGGUNAKAN METODE MASERASI DAN SOKLETASI Nurmalasari, Enny; Miftahurrahmah, Miftahurrahmah; Nurillahi, Resi; Cahyani, Luthfi Nazwa Andya
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 20, No 2 (2023): VOL 20 NO 2 DESEMBER 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/sainti.v20i2.242

Abstract

Torch ginger (Etlingera elatior) contains secondary metabolites that have antibacterial potential. The production of torch ginger extract in Indonesia is still limited. However, market demand increase because pharmaceutical industry is starting to use the torch ginger extract. Furthermore, the growing utilization of torch ginger will enhance the economy of torch ginger farmers. This study aims to compare the extraction efficiency of maceration and soxhletation methods in obtaining bioactive compounds from torch ginger using ethanol, methanol and n-hexane as solvents. The results showed that in the maceration method, ethanol solvent produced the highest yield of 15%, methanol 7% and n-hexane 3%. In soxhletation method, ethanol and methanol solvents produced yields of 15% and 13% respectively, higher than n-hexane only 1%. Overall, soxhletation method with ethanol solvent was the best condition for torch ginger extraction. GC-MS characterization showed the presence of bioactive compounds such as 2-Chloropropionic acid, Boric acid trimethyl ester, Silane dimethoxymethyl and Octadecanoic acid methyl ester which contribute to the antibacterial activity in torch ginger essential oil.
Pengolahan Limbah Cair Industri Tahu Menggunakan Teknologi Ultrafiltrasi Dengan Sistem Monitoring Berbasis Internet of Things N. H., Harmiwati; Yahya, Agung Kurnia; Luthfi, Muhammad Zulfikar; Nurmalasari, Enny; Permadani, Resi Levi; Aini, Apsari Puspita; Rahayu, Puji
Journal of Industrial Community Empowerment Vol 3, No 1 (2024): Published in April 2024
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v3i1.253

Abstract

Waste from the tofu industry is a byproduct of the tofu production process that can have negative environmental impacts if not managed properly. CV. Dapur Tahu still discharges liquid waste directly into the river, posing a potential threat of river water pollution. Although a new reservoir and waste disposal channel are under construction, there is currently no effective waste treatment facility in place. To address this issue, a tofu wastewater treatment facility utilizing filtration technology is proposed due to its simplicity of operation, durability, and high efficiency in removing organic contaminants. The technology comprises a multi-stage filtration process involving sand filters (pumice, zeolite, and activated charcoal) combined with ultrafiltration membrane technology, complemented by a monitoring system consisting of TDS, pH, and temperature sensors. The multi-stage filtration process is capable of reducing TDS levels to 160 ppm, resulting in visibly clearer wastewater compared to the initial turbid white condition. The installation of IoT-based monitoring devices in the wastewater treatment process significantly aids in real-time water quality monitoring, accessible via mobile phone screens.
Evaluasi Indeks Tarik dan Indeks Sobek pada Bleaching Pulp: Pengaruh Hidrogen Peroksida (H2O2), Klorin Dioksida (ClO2) dan Suhu Ulia, Hasnah; Nurmalasari, Enny; Yahya, Agung Kurnia; Rahayu, Puji
REACTOR: Journal of Research on Chemistry and Engineering Vol 5, No 1 (2024): Published in June 2024
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v5i1.110

Abstract

Indonesia is one of the leading Pulp and paper producers globally, with an estimated annual growth rate of 3.5%. However, domestic production has not yet fully met the domestic needs and export demand for paper. Currently, hydrogen peroxide (H2O2) and chlorine dioxide (ClO2) are the primary bleaching agents used in Pulp and paper production. This research aims to evaluate the effects of H2O2, ClO2, and temperature on product quality parameters, specifically the tensile and tear indices. The variations of ClO2 used are 2%, 0.4%, and 0.7%; H2O2 concentrations are 0.1%, 0.2%, and 0.4%; and the temperatures used are 75°C and 85°C. The study found that the addition of ClO2 at a concentration of 0.7% resulted in the highest tensile index of 76.9 N.m/g and a tear index of 3.5 m.N.m²/g. The addition of H2O2 at a concentration of 0.1% resulted in a tensile index of 83.9 N.m/g and a tear index of 9.4 m.N.m²/g. Temperature variations did not significantly affect the tensile and tear indices, with the tensile index reaching 9.35 m.N.m²/g. The addition of H2O2 is essential as it enhances the bleaching process and improves the mechanical properties of the Pulp, which is beneficial for optimizing bleaching conditions to enhance product quality, thus meeting both domestic needs and export demands.
Co-Authors Aini, Apsari Puspita Cahyani, Luthfi Nazwa Andya Luthfi, Muhammad Zulfikar Miftahurrahmah Miftahurrahmah, Miftahurrahmah N. H., Harmiwati Nurillahi, Resi Permadani, Resi Levi Puji Rahayu Rasrendra, Carolus Borromeus Sitompul, Johnner Ulia, Hasnah Yahya, Agung Kurnia