Article Per Year (5 Year)
p-Index From 2021 - 2026
2.319
P-Index
This Author published in this journals
All Journal Jurnal Teknik Kimia USU Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) FLUIDA Sarwahita : Jurnal Pengabdian Kepada Masyarakat Jurnal Gastronomi Indonesia Jurnal Teknik Kimia USU Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Jurnal Teknologi Bahan Alam Jurnal Rekayasa Proses JURNAL REKAYASA KIMIA & LINGKUNGAN
Luthfi Kurnia Dewi, Luthfi Kurnia
Fakultas Teknik, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

Published : 17 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 17 Documents
Search

 1   2 
Formulasi Dan Uji Sensori Otak-Otak Cumi Dengan Variasi Penambahan Tepung Eucheuma Spinosum Dan Tepung Tapioka Triyastuti, Meilya Suzan; Ondang, Hetty Magrittha Paulin; Shitophyta, Lukhi Mulia; Budiarti, Gita Indah; Dewi, Luthfi Kurnia
JURNAL GASTRONOMI INDONESIA Vol 12 No 2 (2024): Jurnal Gastronomi Indonesia
Publisher : Pusat Penelitian & Pengabdian kepada Masyarakat Politeknik Pariwisata Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52352/jgi.v12i2.1247

Abstract

"Otak-otak" is a diversification of fishery products that use fishery commodity raw materials. "Otak-otak" made of squid with using tapioca flour and Eucheuma Spinosum seaweed flour. This research aimed to determine the concentration formulation of Eucheuma Spinosum seaweed flour and tapioca flour in "otak-otak". The test analysis in this research is sensory testing and statistical analysis. The results showed that the appearance and texture aspects of Eucheuma Spinosum flour were very popular with the panelists with an appearance value of 8.19 and a texture value of 8.35. Based on the results of statistical tests, significantly different results were obtained (p<0.05) in the aspects of appearance and texture. Therefore, the appearance and texture aspects of using tapioca flour and Eucheuma Spinosum seaweed flour in squid brains in this study affect consumer acceptance because they have a whiter color without slime and have a chewy, compact, and dense texture.
Optimization of D-limonene and phenolic compounds extraction from local Indonesian orange peel using ultrasound-assisted extraction Wa Ode Cakra Nirwana; Dewi, Luthfi Kurnia; Larasati, Cindy; Anggraini, Oktavia; Hapsari, Safrina
Jurnal Rekayasa Proses Vol 19 No 1 (2025): Volume 19, Number 1, 2025
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.17479

Abstract

Malang Regency is one of the orange plantation centers in East Java, Indonesia, and has been named Indonesia’s orange agrotourism area. Orange peel waste in Indonesia has not been utilized, even though orange peel contains valuable compounds, such as D-limonene and polyphenols. To date, studies on the extraction of D-limonene and total phenolic compounds (TPC) from Baby Java Pacitan orange (Citrus sinensis L.) and Keprok Batu 55 oranges (Citrus reticulata Blanco) has not been investigated. In this work, several factors affecting the extraction of D-limonene and total phenolic compounds from local Indonesian orange peels with ultrasonic assistance were investigated and optimized. The results showed that drying using a vacuum oven and agitation significantly increased the yield of D-limonene and TPC. The optimum condition for extracting D-limonene was a solid-solvent ratio (SSR) of 1:10 with an ethanol concentration of 96% for 40 minutes. Meanwhile, the optimum condition for extracting polyphenol compounds was a solid-solvent ratio of 1:10 with an ethanol concentration of 96% for 80 minutes. Under optimum conditions, Baby Java Pacitan orange peel produced D-limonene of 130.5 mg/g dry biomass, which was 2.8 times higher than Keprok Batu 55 orange peel. Meanwhile, the TPC for Baby Java Pacitan orange peel and Keprok Batu 55 orange peel were 46.1 mgGAE/g dry biomass and 43.9 mgGAE/g dry biomass, respectively.
Comparative Study of Single and Multiple Pre-treatments of Rice Straw on Cellulose Content for Bioethanol Production Dewi, Luthfi Kurnia; Miranda, Ni Made Zevika; Rabbani, Hashinatul Fikrial; Nirwana, Wa Ode Cakra
Jurnal Rekayasa Proses Vol 18 No 2 (2024): Volume 18, Number 2, 2024
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.13187

Abstract

Utilization of lignocellulosic biomass for ethanol production has increased. One source of lignocellulosic is rice straw which contains cellulose, hemicellulose, and lignin. Before being used as an ingredient for bioethanol production, it needs to be pre-treated with alkali or acid. One of the factors that affect pre-treatment is the concentration of alkali or acid. The purpose of this study was to determine the concentration of NaOH and H2SO4 in single and multiple pre-treatment which produced the highest cellulose content for bioethanol production. The concentration of NaOH and H2SO4 are 0.75 M; 1 M and 1.5 M. Pre-treatment was carried out at room temperature for 90 minutes. Cellulose, hemicellulose, and lignin content were analyzed using the Chesson Datta method. The variable that produced the highest cellulose was continued to the Simultaneous Saccharification and Fermentation (SSF) at room temperature and analyzed for reducing sugar and bioethanol contents. The results showed that the highest cellulose content of 60.79% was found in single pre-treatment of 0.75 M H2SO4 of 44.89%, 1.5 M NaOH and multiple pretreatments of 0.75 M H2SO4 – 1.5 M NaOH of 68.14%. The highest bioethanol content was obtained in the multiple pretreatments of 0.75 M H2SO4 – 1.5 M NaOH of 23%.
Batch Adsorption of Tannins from Stevia Leaf Extract using Activated Carbon: An Investigation into Adsorption Isotherms and Adsorption Energy Dewi, Luthfi Kurnia; Purwandaru, Kresna; Maulida, Nurul Istikomah; Sarosa, Aji Hendra
Jurnal Rekayasa Kimia & Lingkungan Vol 19, No 1 (2024): Jurnal Rekayasa Kimia & Lingkungan (June 2024 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v18i2.34370

Abstract

Stevia leaf extract (Stevia rebaudiana Bertoni) could have been utilized as an alternative natural sweetener because it possessed a sweetness level 300 times that of sucrose sugar. However, stevia leaf extract still contained a bitter taste attributed to the presence of tannins. The method that can be used to reduce tannin content is batch adsorption using activated carbon. This study aimed to investigate the batch adsorption process for the tannin content of stevia leaf extract using activated carbon with variable adsorption times ranging from 5 to 180 minutes, which included the appropriate adsorption isotherm model and adsorption energy. Stevia leaves were extracted through maceration with 70% ethanol. The results of the stevia leaf extract were adsorbed in batches using activated carbon treated with 1M NaOH. The analysis was carried out by testing the tannin content (mg/g TAE) using a UV-Vis spectrophotometer at a wavelength of 735 nm and calculating the adsorption isotherm and adsorption energy. The results showed that the tannin content before adsorption was 0.910 mg/g TAE, and the lowest tannin content was 0.040 mg/g TAE at 100 minutes. The tannin content decreased between 590 minutes, remained constant, reached equilibrium at 95120 minutes, and increased again at 125180 minutes. The suitable adsorption isotherm model was the Freundlich isotherm with a value of R2 = 0.9998; KF = 25.293 [(mg/g)(L/mg)1/nf], and adsorption energy = -8.03 kJ/mol. The adsorption that occurred was classified as physical adsorption.
Formulasi Castile Soap Berbasis Virgin Coconut Oil (VCO) dan Minyak Zaitun Sebagai Bahan Pembuatan Sabun Cair Dewi, Luthfi Kurnia; Cahyani , Chandrawati; Nurhadianty , Vivi; Sarosa , Aji Hendra; Zari , Anne Dian Pavita; Wahyuningtyas , Lusia Emiliana; Aulia , Isnaini Rahmi Nur
Jurnal Teknologi Bahan Alam Volume 3, Issue 1, April 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jtba.v3i1.3706

Abstract

Salah satu jenis sabun cair berbahan alami yang bersifat biodegradable dan aman adalah castile soap. Castile soap dibuat melalui reaksi saponifikasi minyak nabati dan alkali (KOH). Minyak nabati yang digunakan yaitu Virgin Coconut Oil (VCO) dan minyak zaitun. Kandungan asam laurat pada VCO dan asam oleat pada minyak zaitun menghasilkan produk sabun yang lembut, aman dan bersifat antibakteri. Tujuan penelitian ini adalah kajian pengaruh penambahan VCO dan minyak zaitun dalam pembuatan castile soap terhadap kualitas sabun cair yang dihasilkan dan kajian formula sabun cair kualitas terbaik. Pada penelitian ini, penambahan Virgin Coconut Oil (VCO) dan minyak zaitun dilakukan dengan memvariasikan jumlah masing-masing minyak yang ditambahkan sebesar 0%, 40%, 50%, 60%, 100% (% massa minyak / massa castile soap). Reaksi saponifikasi dilakukan selama 4 jam pada suhu 70oC. Pengujian mutu sabun cair terdiri dari uji mutu fisikokimia sesuai dengan SNI Sabun Mandi Cair 06-4085-1996 meliputi nilai pH dan bobot jenis dan uji organoleptik terhadap warna, aroma, kekentalan, jumlah busa yang terbentuk, kesan dan reaksi setelah pemakaian pada 50 responden. Hasil penelitian menunjukan bahwa formula sabun cair berbasis VCO dan minyak zaitun dengan penambahan essential oil (rosehip oil, lemon oil, dan lemongrass oil) yang memenuhi SNI 06-4086-1996 dan disukai responden terdapat pada sabun cair dengan variasi 60% VCO dan 40% minyak zaitun dengan konsentrasi lemon oil 1% karena sabun cair dengan formula tersebut memiliki pH 10 dan massa jenis 1,0209 g/ml dimana sabun cair tersebut memiliki karakteristik lembut, aman, dan bersifat antibakteri.
Analisis kelayakan ekonomi produk sanitasi dalam upaya self-sufficiency Dewi, Luthfi Kurnia; Cahyani, Chandrawati; Nurhadianty, Vivi; Sarosa, Aji Hendra
Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Vol 5 No 3 (2022)
Publisher : University of Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jipemas.v5i3.15455

Abstract

Kegiatan pondok pesantren tidak lepas dari penggunaan produk sanitasi untuk menjaga kesehatan dan kebersihan. Salah satu produk sanitasi yaitu hand sanitizer. Tujuan dari kegiatan pengabdian ini yaitu melatih analisis kelayakan ekonomi produk sanitasi dalam upaya self-sufficiency di pondok pesantren Bahrul Maghfiroh Malang. Melalui pengabdian ini diharapkan kesehatan dan kebersihan santri terjaga dan dapat menciptakan pondok mandiri secara finansial. Pengabdian ini dilakukan daring dengan memberikan pelatihan formulasi hand sanitizer dan analisis kelayakan ekonomi meliputi perhitungan harga jual produk dan kriteria investasi. Berdasarkan simulasi hasil perhitungan, didapatkan harga jual hand sanitizer kemasan 100 ml yaitu Rp 11.528,00 dengan laba 5% dari harga pokok penjualan. Dengan interest rate (IR) sebesar 4,25%, didapatkan nilai NPV sebesar Rp 235.841.940,31 dan IRR sebesar 58,82%, dimana investasi produk sanitasi ini dikategorikan visible (layak) karena NPV > 0 dan IRR > IR. ROI yang didapatkan sebesar 94,89% dengan PBP selama 1,05 tahun. Capaian pelaksanaan kegiatan pengabdian ini dapat dilihat dari kepuasan mitra dengan hasil kuesioner rata-rata kepuasan sekitar 74% responden menjawab setuju terhadap kebermanfaatan kegiatan ini. Oleh karena itu, kegiatan analisis kelayakan ekonomi produk sanitasi perlu dilakukan secara kontinyu dan bisa dikembangkan untuk produk sanitasi yang lain.
Effect of Hydrolysis and Amount of Yeast on Banana Peel Fermentation into Bioethanol Dewi, Luthfi Kurnia; Cahyani, Chandrawati; Rahmadhina, Adriatic Fitri; Prasetya, Alexander Tyopannus; Triyastuti, Meilya Suzan
Fluida Vol. 16 No. 2 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i2.4615

Abstract

Recently, renewable energy sources are needed to meet human energy needs, one of which is bioethanol. Bioethanol can be made from banana peels. Banana peel contains starch which has the potential to be converted into bioethanol through fermentation. There are factors that affect fermentation including the number of microorganisms and glucose levels. One method to increase glucose levels is hydrolysis. The purpose of this study was to determine the effect of hydrolysis and the amount of yeast on bioethanol levels in banana peel fermentation. The research variables used were hydrolyzed and non-hydrolyzed banana peel substrates, as well as variations in the amount of yeast as much as 3 grams; 4.5 grams; and 6 grams. From this research, it was found that hydrolysis causes an increase in glucose levels in the substrate due to the conversion of starch to glucose. Increased glucose levels can affect the yield of bioethanol. The bioethanol content of the hydrolyzed substrate fermentation is 9%-9.5% greater than the bioethanol content of the non-hydrolyzed substrate fermentation of 3%-3.5%. The difference in the amount of yeast used in banana peel fermentation has an effect on the bioethanol content but not significantly enough because the amount of yeast will depend on the glucose content in the substrate.
Co-Authors Aisyah, Ersa Amalia Aji Hendra Sarosa Andriana, Rifa Rahma Angga Reza Pratama, Angga Reza Anggraini, Oktavia Aulia , Isnaini Rahmi Nur Bambang Ismuyanto Bayu, Ardian Indra Budiarti, Gita Indah Cahyani , Chandrawati Chandrawati Cahyani Cindy Larasati, Cindy Dienulloh, Naufal Fawwas Fairus, Annisa Faturrohman, Denisya Eka Febriana, Vina Friatnasary, Dwi Lerian Gamayazid Abdillah, Gamayazid Hapsari, Safrina Herawati, Windhi Islam, Livya Safira Lukhi Mulia Shitophyta Lukito, Nadiya Bunga Maghfiroh, Rashieka Putri Maulida, Nurul Istikomah Meilya Suzan Triyastuti, Meilya Suzan Milenia, Rohmah Miranda, Ni Made Zevika Muktafa, Moh. Farid Nurhadianty , Vivi Ondang, Hetty Magrittha Paulin Parasu, Risang Prasetya, Alexander Tyopannus Purwandaru, Kresna Putri, Anima Rahmatika Rabbani, Hashinatul Fikrial Rahmadhina, Adriatic Fitri Rahmi, Isnaini Ramadhani, Elsa Erischa Ridhollah, Muhammad Rifqi Sarosa , Aji Hendra Sinta Murlistyarini Veithzal Rivai Zainal Vivi Nurhadianty, Vivi Wa Ode Cakra Nirwana Wa Ode Cakra Nirwana, Wa Ode Cakra Wahyuningtyas , Lusia Emiliana Zari , Anne Dian Pavita