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All Journal Jurnal Riset Kimia SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Distilat: Jurnal Teknologi Separasi Jurnal Teknik Kimia dan Lingkungan Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Pengabdian Kepada Masyarakat Journal of Evrimata: Engineering and Physics
Irfin, Zakijah
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Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Social Sciences Other

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ANALISA EKONOMI KUB MUSTARIKA JAYA MAKMUR DALAM PRODUKSI KEJU MOZZARELLA Widya Amalia, Elsa; Irfin, Zakijah; Noer Syamsiana, Ika; Hadi Susilo, Sugeng; Moentamaria, Dwina; Rulianah, Sri; Dwi Chrisnandari, Rosita
DISTILAT: Jurnal Teknologi Separasi Vol. 11 No. 3 (2025): September 2025
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v11i3.7462

Abstract

Keju mozzarella merupakan salah satu produk olahan susu yang menunjukkan tren konsumsi yang meningkat di Indonesia dalam beberapa tahun terakhir. Penelitian ini bertujuan untuk mengevaluasi kelayakan ekonomi produksi keju mozzarella skala pilot di KUB Mustarika Jaya Makmur, Desa Ngantru, Kecamatan Ngantang, Kabupaten Malang. Proses produksi menggunakan teknologi tepat guna berupa sistem pasteurisasi berbasis Pulse Electric Field (PEF) yang terintegrasi dengan fermentor, dengan kapasitas 5 kg keju per batch dari 50 liter susu sapi segar dan dirancang untuk beroperasi selama 350 hari per tahun. Analisis ekonomi dilakukan dengan menghitung kebutuhan investasi awal (Fixed Capital Investment, Working Capital Investment, dan Total Capital Investment), biaya produksi tahunan (Total Production Cost), serta indikator profitabilitas usaha yang mencakup Return on Investment (ROI), Payback Period (POT), Break Even Point (BEP), Shut Down Point (SDP), dan Internal Rate of Return (IRR). Hasil perhitungan menunjukkan bahwa nilai investasi total mencapai Rp174.781.031,10, dengan biaya produksi tahunan sebesar Rp203.264.573,47 dan laba bersih setelah pajak sebesar Rp40.388.341,22. ROI tercatat sebesar 23,12%, dan modal dapat kembali dalam waktu 2,5 tahun. Titik impas tercapai pada kapasitas 58,71%, sementara SDP berada pada 14,28%. IRR sebesar 19,25% menyatakan bahwa usaha ini layak secara finansial.
Characterization of Bio-Oil and Bio-Asphalt Produced Through Catalytic Pyrolysis of Different Biomass Feedstocks Dewajani, Heny; Irfin, Zakijah; Iswara, M. Agung Indra; Ramadhana, Rucita; Wahyudi, Moch. Ikhsan; Riris, Farikhatul Iza
Jurnal Teknik Kimia dan Lingkungan Vol. 9 No. 2 (2025): October 2025
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v9i2.7610

Abstract

Asphalt is an aggregate binder in road pavement construction derived from the residue of the petroleum fractionation process, a non-renewable natural resource. Reliance on petroleum asphalt leads to resource scarcity and increased production costs. One alternative to reduce this dependence is the use of bio-asphalt substitutes, which utilize renewable natural resources derived from biomass. The abundance of biomass such as coconut shells, sawdust, and coffee husk in East Java, Indonesia, makes it a promising resource for bio-asphalt synthesis. This study analyzes the effect of biomass types and catalyst mass ratios on the characteristics of bio-asphalt from bio-oil pyrolysis and its mixture with petroleum asphalt, specifically the penetration (pen) 60/70. The research stages include biomass preparation, zeolite catalyst activation, biomass pyrolysis into bio-oil, evaporation into bio-asphalt, and mixture analysis. Optimal characteristics were achieved using a 6% w/w coconut shell biomass catalyst, resulting in a bio-oil yield of 47.27% and a density of 1.060 g/mL. The bio-asphalt yield was 3.41% when mixed with petroleum asphalt pen 60/70. The bio-asphalt exhibited a penetration value of 66.35, a softening point of 52°C, and a density of 1.042 g/cm³, in accordance with the Indonesian National Standard (SNI) 8135:2015.
Efektifitas Reaksi Transesterifikasi Minyak Kelapa dan Sereh untuk Pembuatan Perisa Alami dengan Biokatalisator Lipase serta Penggunaan Ultrasonik Moentamaria, Dwina; Amalia, Nabila Rizki; Rosita Dwi Chrisnandari; Irfin, Zakijah; Wulan, Dyah Ratna
Jurnal Riset Kimia Vol. 15 No. 1 (2024): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v15i1.641

Abstract

In general, flavor are synthesis through enzymatic hydrolysis and esterification reactions (up to 20 hours) using commercial ingredients based on free fatty acids and alcohol. Efficient endeavors utilizing enzymatic transesterification to expedite reactions are necessary to acquire flavored products. Substrates may originate from commercial or natural sources abundant in fatty acids and alcohol. Commercial fatty acids and alcohol (geraniol) are readily available in pure forms. Alternatively, fatty acids can be sourced from coconut oil, while geraniol can be derived from lemongrass oil, which is more cost-effective compared to commercial ingredients. Ultrasonics have emerged as a means to expedite enzymatic. The objective of this study is to investigate the impact of ultrasonic power and transesterification reaction time between coconut oil and geraniol on geraniol conversion. Utilizing lipase (415.99 U/g), coconut oil was subjected to transesterification with commercially obtained pure geraniol in a 1:3 weight ratio, conducted in an ultrasonic tank filled with water. Reaction durations spanned 30, 60, 90, 120, and 150 minutes, with ultrasonic powers set at 50, 70, and 90 watts. The study findings elucidated that the highest geraniol conversion rate of 50.59% was achieved with 70 watts of ultrasonic power over a 90-minute period. These optimal conditions were subsequently applied to transesterify coconut oil with geraniol from lemongrass oil, yielding a conversion rate of 90.29%. This finding demonsttrate the posibility of employing coconut oil and lemongrass oil in a one-stage transesterification process to produce natural flavors via enzymatic lipase catalysis expedited by ultrasonic technology, facilitating swift reaction times.
PENGARUH RASIO PENAMBAHAN PEKTIN PADA PEMBUATAN SELAI MANGGA ,NANAS, DAN SIRSAK Maya, Fransisca; Irfin, Zakijah
DISTILAT: Jurnal Teknologi Separasi Vol. 7 No. 2 (2021): August 2021
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v7i2.199

Abstract

Indonesia merupakan negara penghasil buah tropis yang melimpah, oleh karena itu pengolahan buah sangat penting agar dapat meningkatkan nilai jual sekaligus memperpanjang umur simpan buah. Beberapa buah di Indonesia memiliki rasa dan aroma segar yang ideal untuk pembuatan selai. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan pektin terhadap mutu selai dari beragam buah. Buah yang digunakan pada penelitian ini yaitu buah mangga, sirsak, dan nanas. pektin (P) yang digunakan dalam penelitian terdiri dari 4 (empat) variabel yaitu P1 = 1,5 gram (0,0075% dari jumlah gula) , P2 = 2 gram (0,01%) , P3 = 2,5 gram (0,0125%) , dan P4 = 3 gram (0,015%). Pada setiap buah dilakukan sebanyak 4 kali pengujian sehingga diperoleh 12 satuan percobaan. Formulasi terbaik dari penelitian ini adalah selai yang dibuat dari rasio pektin P4 = 3 gram (0,015%) pada buah mangga, sirsak dan nanas. Namun kadar air dan serat pada buah juga mempengaruhi proses gelatinisasi selai. Pada buah mangga memiliki komposisi yang pas untuk pembuatan selai dengan deskripsi selai hasil terbaik adalah rasa selai manis, beraroma enak, berwarna kuning cerah serta memiliki tekstur yang ideal untuk selai. Pada penelitian ini menunjukkan bahwa penambahan pektin secara signifikan mempengaruhi tekstur dan warna pada selai.
ENZIM ZINGIBAIN SEBAGAI BAHAN KOAGULASI SUSU UNTUK PEMBUATAN KEJU MOZARELLA Nindyasari, Karin Ditha; Irfin, Zakijah; Moentamaria , Dwina
DISTILAT: Jurnal Teknologi Separasi Vol. 8 No. 1 (2022): March 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v8i1.309

Abstract

Pembuatan keju melibatkan sejumlah tahapan yang umum untuk kebanyakan tipe keju. Dari proses tersebut sebuah susu dapat diproduksi menjadi berbagai variasi produk keju. Berbagai riset menunjukkan bahwa proses koagulasi pada pembuatan keju dapat dilakukan dengan menggunakan enzim protease yang memiliki karakteristik serupa dengan enzim renin. Enzim protease yang memiliki aktivitas penggumpal susu salah satunya adalah enzim zingibain yang terdapat dalam jahe merah. Jahe merah termasuk ke dalam famili Zingeberaceae dan merupakan salah satu rempah yang banyak digunakan oleh masyarakat Indonesia. Rimpang jahe memiliki aktivitas enzim zingibain yang cukup tinggi terhadap protein sehingga dapat digunakan sebagai substitusi rennet. Penelitian ini bertujuan untuk Mengetahui kemampuan serta pengaruh penambahan enzim zingibain dari jahe merah sebagai koagulan susu untuk pengaplikasian pada keju mozzarella. Variabel berubah yang digunakan pada pembuatan keju mozarella adalah penambahan bakteri Mesophilic M11 dengan asam sitrat dengan perbandingan 1:1, 0:1. Hasil penelitian berupa keju mozarellla yang akan ditinjau dari nilai yield, kadar air dan nilai pH. Untuk hasil keju mozarella terbaik dihasilkan pada variabel 0:1 yaitu dengan pengasaman langsung menggunakan asam sitrat dengan penambahan enzim zingibain 1,75% dengan yield 7,02%, pH 5,4, Kadar air 51%. Sampel terbaik selanjutnya diuji kadar protein dan lemaknya, hasil kadar protein yang didapat sebesar 23,24% dan kadar protein sebesar 10,68%.
Optimization of Making Edible Film from Glucomannan Flour with the Addition of CaCO3, Gelatin, Glycerol, Coconut Oil, and Tea Tree Oil Irfin, Zakijah; Moentamaria, Dwina; Nur Arifa, Anugraheni
Journal of Evrímata: Engineering and Physics Vol. 01 No. 01, 2023
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/journalofevrmata.vi.3

Abstract

The increase in population causes the level of basic needs to increase, one of which is in terms of food. Where mostly, the food industry uses petroleum-based plastic packaging, the use of these materials can contaminate food due to the nature of the chemical substances that are easily mixed with the packaged products. Therefore, it is necessary to have packaging technology that is safe and does not damage the environment, for example edible film (McHugh and Krochta 1994). The process of making edible films is carried out by mixing the independent variables, namely the concentration of CaCO3, gelatin, coconut oil, and glycerol and then testing the product in the form of tensile strength, elongation, water vapor transmission rate, and thickness. The first objective of this study is to determine the effect of each independent variable on tensile strength, elongation, water vapor transmission rate, thickness, biodegradation, and the number of microbes. Second, obtaining the optimum composition through RSM. The optimum results obtained from RSM resulted in the composition of each variable and response, namely gelatin 7 grams, CaCO3 0.8 grams, coconut oil 3 ml, and glycerol 2 ml and resulted in a minimum thickness response of 0.1 mm, minimum water vapor transmission rate of 1 g.m2 /day, maximum tensile strength of 86 kgf/cm2 , and maximum elongation of 43%.
Increasing the Production Capacity of Mozzarella Cheese as a Pioneer for the Cheese Village at KU Mustarika Jaya Makmur, Ngantang Irfin, Zakijah; Rachmawati, Diana; Moentamaria, Dwina; Rulianah, Sri; Dwi Chrisnandari, Rosita; Akhsanu Takwim, R.N.
KOMUNITA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 4 No 4 (2025): November
Publisher : PELITA NUSA TENGGARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60004/komunita.v4i4.292

Abstract

Indonesia has significant potential in dairy cattle production, one example being in Dusun Tepus, Ngantru Village, Ngantang Subdistrict, Malang Regency. The business group “Mustarika Jaya Makmur” consists of dairy farmers producing fresh milk. Previously, the State Polytechnic of Malang (Polinema) provided solutions in the form of training on supply chain management, milk processing, and the application of production calculation tools to support efficiency. Considering the business potential of mozzarella cheese, the group increased its production capacity to 50 liters of fresh milk on a pilot scale to initiate the “Kampung Kedju” program, aimed at improving the villagers’ livelihoods. This Community Service Program (PPM) is expected to provide solutions through production enhancement, assistance in the use of equipment in accordance with standard operating procedures (SOP), and the implementation of Good Manufacturing Practices (GMP) in cheese production. The expected outputs include improved partner capacity, scientific publications, and copyright registration of a HACCP guideline.
Co-Authors Achmad Chumaidi, Achmad Ahmad Zaini Akhsanu Takwim, R.N. Alda Widiana, Sherina Amalia, Nabila Rizki Ariani Ariani Arviana, Felicia Candra Dewi, Listiyana Chrisnandari, Rosita Dwi Dewajani, Heny Diana Rachmawati Dwi Chrisnandari, Rosita Dyah Ratna Wulan Eko Naryono Hadi Susilo, Sugeng Hendrawati , Nanik Hidayatinnisa, Nurul Indragiri, Galih Pamungkas Iswara, M. Agung Indra Maritsa, Nadia Nur Maulana, Muhammad Fahreza Alif Maya, Fransisca Moentamaria , Dwina Muharja, Maktum Nindyasari, Karin Ditha Nur Arifa, Anugraheni Poernamawati, Diana Eka Riris, Farikhatul Iza Rizki Fitria Darmayanti Rosita Dwi Chrisnandari Rucita Ramadhana Savira, Anggun Febi Sjarief Widjaja Sri Rulianah, Sri Sulistyono Sulistyono Syamsiana, Ika Noer Tri Widjaja Ulla Delfana Rosiani Virnanda, Alfida Bella Wahyudi, Moch. Ikhsan Widya Amalia, Elsa