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All Journal Teknotan: Jurnal Industri Teknologi Pertanian IPTEK The Journal of Engineering Jurnal Bahan Alam Terbarukan Journal of Innovation and Applied Technology Jurnal Keteknikan Pertanian Tropis dan Biosistem INDONESIAN JOURNAL OF ESSENTIAL OIL Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) FLUIDA
Luthfi Kurnia Dewi
Chemical Engineering Department, Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Other

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PENINGKATAN RENDEMEN DESTILASI MINYAK JAHE MELALUI FERMENTASI JAHE MERAH (Zingiber officinale var. Rubrum) MENGGUNAKAN Trichoderma harzianum Vivi Nurhadianty; Chandrawati Cahyani; Luthfi Kurnia Dewi; Linda Triani; Resti Kurnia Putri
INDONESIAN JOURNAL OF ESSENTIAL OIL Vol 1, No 1 (2016)
Publisher : Institut Atsiri Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (418.093 KB) | DOI: 10.21776/ub.ijeo.2016.001.01.06

Abstract

Rendemen minyak jahe hasil penyulingan pada umumnya masih rendah, maka perlu metode yang mampu meningkatkan rendemen minyak jahe hasil penyulingan. Pada penelitian ini dilakukan perlakuan awal berupa fermentasi pada jahe merah. Fermentasi dilakukan pada jahe merah dengan ukuran ± 1 x 1 cm, berlangsung secara aerob, pada suhu ruangan, pH 4, moisture jahe merah 40-45%, dan konsentrasi T.harzianum dalam fermentor ± 1,087 x 104 mg/L. Selanjutnya, destilasi uap dilakukan selama 8 jam pada jahe merah yang telah difermentasi maupun yang tanpa fermentasi. Perolehan minyak jahe setelah fermentasi selama 2, 6, dan 8 hari dibandingkan dengan minyak jahe tanpa fermentasi untuk mengetahui pengaruh fermentasi terhadap peningkatan rendemen minyak jahe. Adapun hasil dari penelitian ini menunjukkan bahwa jahe merah tanpa fermentasi, dan dengan jahe yang difermentasi selama 2, 6, dan 8 hari secara berturut-turut sebesar menghasilkan rendemen sebesar 0,015% ; 0,020% ; 0,076%; dan 0,025%. Berdasarkan hasil tersebut, fermentasi jahe merah selama 6 hari menghasilkan rendemen minyak jahe tertinggi.
The Formulation of Hypoallergenic Massage oil using Local Essential Oil of Indonesia Chandrawati Cahyani; Herwinda Brahmanti; Luthfi Kurnia Dewi; Vivi Nurhadianty
Journal of Innovation and Applied Technology Vol 7, No 1 (2021)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jiat.2021.007.01.11

Abstract

A laboratory study was conducted to investigate the possibility of producing a hypoallergenic massage oil using local essential oil. The main concept behind the study was the application of massage oil formula which is in contact with skin need to be allergen free. This study used four types of local essential oil, i.e. cananga, clove, citronella and a fraction of citronella oil.  Two types of carrier oils were used, i.e. extra virgin olive oil and grape seed oil. The study searches the concentration of essential oil which is safe to be used in the formula, not giving an allergy reaction. The concentration of essential oil studied were one and two percent respectively, and an allergy test will also be conducted to the carrier oil themselves. The allergy test was conducted toward 30 respondents. 
Studi Input Energi pada Proses Penyulingan Minyak Atsiri Nilam dengan Sistem Boiler (Studi Kasus Unit Pengolahan minyak Nilam Kesamben-Blitar) Kresna Purwandaru; Denisya Eka Faturrohman; Anima Rahmatika Putri; Rashieka Putri Maghfiroh; Muhammad Rifqi Ridhollah; Luthfi Kurnia Dewi
Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol 3, No 2 (2015)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.938 KB)

Abstract

Minyak atsiri merupakan salah satu komoditas ekspor Indonesia. Produsen utama di dunia untuk minyak atsiri adalah Indonesia (Jawa), Haiti dan Cina. Masalah utama yang ditemukan dalam penyulingan minyak atsiri di Indonesia adalah rendahnya kualitas minyak, membuang-buang waktu proses distilasi dan konsumsi energi yang tinggi. Penelitian ini bertujuan untuk menganalisis penggunaan energi di beberapa proses distilasi dan untuk meningkatkan kualitas minyak yang diperoleh. Penelitian ini bertujuan untuk mengetahui pengaruh massa materi terhadap kebutuhan massa uap dan energi  uap minyak nilam pada proses distilasi, dan untuk mengetahui pengaruh massa uap terhadap kebutuhan enrgy uap yang dihasilkan dalam penyulingan minyak nilam. Penelitian ini menggunakan metode variabel bebas dengan satu faktor yaitu massa bahan (250 kg, 275 kg, 300 kg), dengan konstan tekanan absolut 5 atm. Penelitian menunjukkan massal bahan 300 kg, menghasilkan massa uap sebesar 0.588 kg, dan energi uap 1527,59 kJ, dengan efisiensi tertinggi tenaga uap 38,61%. Kata Kunci : penyulingan, input energi, atsiri
Analisis kelayakan ekonomi produk sanitasi dalam upaya self-sufficiency Luthfi Kurnia Dewi; Chandrawati Cahyani; Vivi Nurhadianty; Aji Hendra Sarosa
Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Vol 5, No 3 (2022): In progress (November)
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.
Pengaruh Kerapatan Unggun Bahan pada Distilasi Uap terhadap Rendemen dan Komposisi Minyak Jeruk Purut Luthfi Kurnia Dewi; Chandrawati Cahyani; Novelia Puspa Wardani; Hasanuddin Sella
Teknotan: Jurnal Industri Teknologi Pertanian Vol 17, No 1 (2023): TEKNOTAN, April 2023
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jt.vol17n1.8

Abstract

Minyak jeruk purut (kaffir lime oil) banyak digunakan dalam industri flavor, minuman, makanan, farmasi, pewarna, dan parfum. Komponen utama dalam minyak jeruk purut yaitu sitronelal, sitronelol, geraniol, dan linalool. Minyak jeruk purut dapat dihasilkan dengan menggunakan metode distilasi uap. Dalam proses distilasi uap, kerapatan unggun bahan merupakan salah satu faktor yang dapat mempengaruhi jumlah rendemen dan kualitas minyak yang dihasilkan karena kerapatan unggun berkaitan dengan aliran uap yang melalui tumpukan bahan yang dapat mempengaruhi jumlah minyak yang dapat terbawa oleh uap tersebut menjadi kondensat. Oleh karena itu, penelitian ini dilakukan untuk mengetahui pengaruh kerapatan unggun (daun dan batang jeruk purut) pada proses distilasi terhadap jumlah rendemen dan komposisi minyak jeruk purut yang dihasilkan. Pada penelitian ini menggunakan metode distilasi uap indirect selama 6 jam, tekanan 1,2 kg/cm2 (gauge), laju alir uap sebesar 2 L/jam. Perbandingan berat bahan daun dan batang 1:1. Kerapatan unggun divariasi sebesar 0,075 kg/L, 0,100 kg/L dan 0,125 kg/L. Berdasarkan hasil penelitian, kerapatan unggun daun dan batang jeruk purut berpengaruh terhadap rendemen minyak jeruk purut yang dihasilkan yaitu pada kerapatan unggun 0,075 kg/L, 0,100 kg/L dan 0,125 kg/L menghasilkan rendemen berturut-turut sebesar 0,979%, 0,854% dan 0,647%. Kerapatan unggun 0,075 kg/L merupakan kerapatan yang terbaik dengan rendemen dan kadar sitronelal (78,98%) tertinggi. Kata kunci: distilasi uap; kerapatan unggun bahan; minyak jeruk purut; rendemen; sitronelal
The Effect of Various Solvent in Soxhlet Extraction on The Characterictics of Basil Oil (Ocimum Americanum L.) Luthfi Kurnia Dewi; Siska Dwi Setyawati; Annisa Nur Fidyanti Pamuji; Syifa Indrayana; Chandrawati Cahyani
Jurnal Bahan Alam Terbarukan Vol 12, No 1 (2023): June 2023 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v12i1.41903

Abstract

Basil (Ocimum americanum L.) is a common plant in Indonesia used as the source of basil oil. Many methods to produce basil oil, such as solvent extraction using Soxhlet apparatus that called Soxhlet extraction. Determining solvent is a necessary factor in Soxhlet extraction because it affects the results of extraction in the form of quantity and quality of the essential oil produced. This shows that the selection of the type of solvent is an important factor to consider in the process of extracting basil essential oil, so this study was carried out to know the effect of solvent variations on the extraction results which were analyzed based on the yield and quality of essential oils including refractive index, specific gravity, and active compound. This research used three solvents with different polarities, ethanol, ethyl acetate and n-hexane. Basil leaves were separated from their flower and stem and dried in the oven at 102°C until their water content was 15-25%. Before extraction, dried basil leaves were cut to reduce size. The ratio of material to solvent that used was 1:50. Extraction was done at boiling point of each solvent for ten cycles. The rotary evaporator was used to separate basil oil and solvent. The highest yield is accomplished by basil oil that used ethanol (2,74%) followed by ethyl acetate (0,74%) and n-hexane (0,41%). The major active compounds obtained from each solvent were linalool 38.08% (ethanol), linalool 27.11% (ethyl acetate), and methyl chavicol 39.3% (n-Hexane). Basil oil from three solvents has a refractive index and specific gravity that suit commercial basil oil.
The Effect of Cabbage Waste Pretreatment on Lignocellulose Content for Bioethanol Production Luthfi Kurnia Dewi; Sadiah Tulus Setyobudi; Nurul Fajria Kurnianti; Wa Ode Cakra Nirwana; Rifa Rahma Andriana
IPTEK The Journal of Engineering Vol. 10 No. 2 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v10i2.a19270

Abstract

Cabbage waste represents a resource rich in lignocellulose, offering substantial potential as a raw material for bioethanol production. However, the nature of lignocellulosic complexes necessitates effective pretreatment strategies to enhance cellulose accessibility. This study aims to determine the effect of pretreatment on cabbage waste on changes in lignocellulosic content before and after pre-treatment to determine the influence of solution concentration and pretreatment duration of cabbage waste on the level of reducing sugars, which will subsequently affect bioethanol fermentation. In this research, cabbage waste was pretreated using H2SO4 1 M and alkaline NaOH 1 M for 1 hour to determine the pretreatment agent that produced the highest cellulose content. Furthermore, the concentration (1 M; 1.5 M; 2 M) and the pretreatment time (1 hour; 1.5 hours; 2 hours) will be varied to produce the highest reducing sugar content, which will be continued to the Simultaneous Saccharification and Fermentation (SSF). The results showed that pretreatment using H2SO4 produced the highest change in cellulose content. Pre-treatment using H2SO4 at a concentration of 1.5 M for 1.5 hours produced the highest reducing sugar concentration of 0.32 g/L. The highest bioethanol content was obtained during fermentation for 72 hours at 22.25%.
Effect of Hydrolysis and Amount of Yeast on Banana Peel Fermentation into Bioethanol Luthfi Kurnia Dewi; Chandrawati Cahyani; Adriatic Fitri Rahmadhina; Alexander Tyopannus Prasetya; Meilya Suzan Triyastuti
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 Adriatic Fitri Rahmadhina Aji Hendra Sarosa Alexander Tyopannus Prasetya Anima Rahmatika Putri Annisa Nur Fidyanti Pamuji Chandrawati Cahyani Chandrawati Cahyani Chandrawati Cahyani Chandrawati Cahyani Chandrawati Cahyani Denisya Eka Faturrohman Hasanuddin Sella Herwinda Brahmanti Kresna Purwandaru Linda Triani Meilya Suzan Triyastuti, Meilya Suzan Muhammad Rifqi Ridhollah Novelia Puspa Wardani Nurul Fajria Kurnianti Rashieka Putri Maghfiroh Resti Kurnia Putri Rifa Rahma Andriana Sadiah Tulus Setyobudi Siska Dwi Setyawati Syifa Indrayana Vivi Nurhadianty, Vivi Wa Ode Cakra Nirwana