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PEMURNIAN DAN KARAKTERISASI GLISEROL HASIL SAMPING PRODUKSI BIODIESEL KEMIRI SUNAN Pirdani Nur Fitri; Sarifah Nurjanah; Asri Widyasanti
Prosiding Simposium Nasional Multidisiplin (SinaMu) Vol 1 (2019): Simposium Nasional Multidisiplin (SinaMu)
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (75.085 KB) | DOI: 10.31000/sinamu.v1i0.2145

Abstract

As world biodiesel production increases, glycerol production as a by product of the biodiesel production process also increases. Glycerol is a compound that is widely used in the pharmaceutical industry, care products, food, and cosmetics. Philippine tung is one of the sources of biodiesel raw material which is very potential to be developed in Indonesia and the yield of glycerol produced from the transesterification process can reach 19%. This study aims to purify and determine the characteristics of glycerol as a by-product of philippine tung biodiesel production. Glycerol quality analyzed included appearance, glycerol content, KOH content, soap content, water content and density. Based on the results of the research, it is known that the characteristics of glycerol as a byproduct of philippine tung biodiesel production are viscous dark liquid appearance, 2,6348% glycerol content, 2,4160% KOH content, 11,9563% soap content, 10,3441% moisture content, and 1,0955 density, while the characteristics of glycerol after neutralization has appearance of light brown viscous liquid, 87.8913% glycerol content, 11.8576% moisture content, and 1.2537 density. In addition, the yield of purification process also calculated, included neutralization yields of 90.6195%, separation yield of 39,3090%, and total yield of 38,6842%.Keywords: Glycerol, Purification, Philippine Tung, Characterization
ANALISIS KINERJA DAN KELAYAKAN FINANSIAL MESIN PENGUPAS KENTANG TIPE SILINDER ABRASIVE (Performance and Financial Feasibility of Potato Peeler Abrasive Cylinder Type) Ahmad Thoriq; Rizky Mulya Sampurno; Sarifah Nurjanah
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 6 No 1 (2018): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.787 KB) | DOI: 10.29303/jrpb.v6i1.75

Abstract

In producing potato chips mechanically there are two machines that play an important role, i.e. peeler and slicer potato. As a basis in production planning, it is necessary to test the performance of the machines of both units of the machine. The performance of potato slicing machine has been done in the previous research with the slicing capacity reaching 71.160 kg/hour. This study aims to test the performance and financial feasibility of potato peelers. Performance testing of potato peeler begins with the preparation of sweet potato, sorting the shape and size, and weighing. Some parameters measured during the test process consist of: power, effective capacity, weight loss, potato cleanliness, and stripping efficiency. Some of the parameters calculated on the financial feasibility analysis include: HPP, NPV, BCR, PBP and IRR. The result showed that peeling capacity was 396,73 watt, with peeling machine capacity 90.33 kg/hour, stripping efficiency 88.32%, for 2 minute stripping happened weight reduction 11.68% from initial weight 3.06 kg, with a cleanliness level that reaches 100% for potatoes round and 90% for ovalshaped potatoes. In the production capacity of potato peeled 6382,36 kg/month, the cost of production achieved Rp 12,149/kg. When peeled potatoes are sold at market price of Rp 18,000/kg, we get NPV of Rp 1,538,996,547/year, BCR of 1.42, IRR of 33.48% and capital returns in the sixth month. Keywords: machine performance, financial feasibility, peeled potato, potato peeler, sweet potato ABSTRAK Terdapat dua mesin yang berperan penting pada produksi keripik kentang secara mekanis yaitu mesin pengupas dan mesin pengiris kentang. Sebagai dasar dalam perencanaan produksi, perlu dilakukan uji kinerja mesin kedua unit mesin tersebut. Kinerja mesin pengiris kentang telah dilakukan pada penelitian sebelumnya dengan kapasitas pengirisan yang mencapai 71,160 kg/jam. Penelitian ini bertujuan melakukan uji kinerja dan kelayakan finansial mesin pengupas kentang. Pengujian kinerja mesin pengupas kentang dimulai dengan penyiapan ubi kentang, sortasi berdasarkan bentuk dan ukuran, dan penimbangan. Beberapa parameter yang diukur selama proses pengujian terdiri atas : daya, kapasitas efektif, kehilangan bobot, tingkat kebersihan kentang, dan efesiensi pengupasan. Beberapa parameter yang dihitung pada analisis kelayakan finansial antara lain : HPP, NPV, BCR, PBP dan IRR. Hasil penelitian menunjukkan besarnya daya pengupasan sebesar 396,73 watt, dengan kapasitas mesin pengupas sebesar 90,33 kg/jam, efesiensi pengupasan 88,32%, selama 2 menit pengupasan terjadi pengurangan bobot sebesar 11,68 % dari berat awal 3,06 kg, dengan tingkat kebersihan yang mencapai 100% untuk kentang berbentuk bulat dan 90% untuk kentang berbentuk lonjong. Pada kapasitas produksi kentang kupas 6382,36 kg/bulan, harga pokok produksi sebesar Rp. 12.149 /kg. Bila kentang kupas dijual dengan harga pasar Rp.18.000/kg maka didapatkan NPV sebesar Rp.1.538.996.547/tahun, BCR sebesar 1,42, IRR sebesar 33,48% dan modal akan kembali pada bulan keenam. Kata kunci: kinerja mesin, kelayakan finansial, kentang kupas, mesin pengupas, ubi kentang
PENGARUH PERBANDINGAN VOLUME PELARUT PADA KRISTALISASI PATCHOULI ALCOHOL DARI MINYAK NILAM (Pogostemon cablin Benth) DENGAN METODE COOLING CRYSTALLIZATION Laily Rizki Safira; Asri Widyasanti; Sarifah Nurjanah
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 7 No 2 (2019): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (693.462 KB) | DOI: 10.29303/jrpb.v7i2.142

Abstract

Minyak nilam merupakan salah satu komoditas minyak atsiri andalan Indonesia yang sangat prospektif di pasaran. Untuk meningkatkan mutu minyak nilam yaitu dengan menghasilkan kandungan patchouli alcohol yang tinggi. Pada proses kristalisasi patchouli alcohol perlu dilakukan optimalisasi untuk mendapatkan rendemen dan mutu patchouli alcohol yaitu dengan menggunakan pelarut. Penelitian ini bertujuan untuk mengetahui pengaruh perbandingan pelarut dalam proses kristalisasi patchouli alcohol terhadap rendemen dan mutu kristal yang dihasilkan. Metode penelitian yang digunakan adalah metode deskriptif dengan analisis korelasi-regresi. Penelitian ini diawali dengan proses distilasi fraksinasi vakum minyak nilam untuk meningkatkan kadar patchouli alcohol dalam distilat. Pada proses kristalisasi digunakan lima kondisi variabel pelarut yaitu 10%, 20%, 30%, 40%, dan 50% dan satu perlakuan kontrol. Pengamatan yang dilakukan yaitu rendemen dan mutu kristal patchouli alcohol meliputi uji warna, bulk density dan partikel density, dan melting point. Nilai rendemen kristal dan yield terbesar pada perlakuan volume pelarut 10% yaitu 52,77% dan 87,93%. Perolehan mutu yang terbaik yaitu uji warna pada perlakuan volume pelarut 50% sebesar 100,0533, bulk density pada perlakuan volume pelarut 10% sebesar 0,4351 g/mL, true density pada perlakuan 30% sebesar 1,0011 g/mL, melting point pada perlakuan 40% sebesar 57℃.
KAJIAN RASIO REFLUKS PADA ISOLASI BEBERAPA SENYAWA MINYAK NILAM (Pogostemon cablin Benth) DENGAN METODE DISTILASI FRAKSINASI Irene June Sidabutar; Asri Widyasanti; Sarifah Nurjanah; Bambang Nurhadi; Tita Rialita; Elazmanawati Lembong
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 8 No 1 (2020): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (914.122 KB) | DOI: 10.29303/jrpb.v8i1.160

Abstract

Minyak nilam yang dihasilkan oleh petani umumnya masih memiliki kualitas yang rendah dikarenakan teknik penanganan panen dan pascapanen yang kurang tepat. Beberapa penelitian telah dilakukan untuk meningkatkan mutu minyak nilam dengan menggunakan metode distilasi fraksinasi. Distilasi fraksinasi merupakan proses pemisahan komponen berdasarkan titik didih senyawa. Penelitian ini bertujuan untuk mengetahui pengaruh rasio refluks terhadap kondisi proses distilasi fraksinasi. Metode penelitian yang digunakan adalah metode eksperimen dengan analisis deskriptif. Penelitian ini dilakukan dengan menggunakan tiga variabel, yaitu rasio refluks 20:1, 30:1 dan 40:1 dengan pengulangan sebanyak dua kali, serta diatur untuk menghasilkan 5 fraksi (cut) pada masing variabel. Parameter yang diukur meliputi bobot jenis, indeks bias, rendemen proses, massa residu, massa hilang dan total lama waktu distilasi. Hasil penelitian menunjukkan perlakuan refluks memberikan pengaruh terhadap kondisi operasi dimana semakin besar rasio refluks yang digunakan maka waktu yang dibutuhkan untuk distilasi fraksinasi juga semakin lama. Kondisi operasi optimal diperoleh pada rasio refluks 20:1. Perolehan lama waktu dan rendemen proses secara berturut adalah 10,9 jam dan 93%. Rasio refluks 20:1 dinilai lebih efisien karena waktu fraksinasi yang lebih singkat serta mampu menghasilkan rendemen yang tinggi.
PENGARUH PROSES CRISPING PADA KUALITAS KESEGARAN TESPONG (Oenanthe javanica D. C) SELAMA MASA PENYIMPANAN Muhammad Gilang Ramadhan; Sudaryanto Zain; Sarifah Nurjanah; Abdullah Md Zain; Roshita Ibrahim; Asri Widyasanti
AGROINTEK Vol 17, No 2 (2023)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v17i2.13192

Abstract

Water loss by transpiration causes withering in tespong (water celeries). Crisping can be considered to maintain the availability of water in tespong. The crisping is a process of diffusing water into vegetables through a soaking process by employing the mechanism of opening and closing of stomata and other natural openings which is influenced by surrounding temperature. The purpose of this study was to determine the effect of temperature and soaking time on the crisping process in maintaining the freshness quality of tespong. Tespong samples were immersed at 30°C and 40°C soaking temperatures for 3, 5, 7, and 10 minutes of soaking time, followed by a cooling process in cold storage at 5±2 °C for 16 hours before being stored in a chiller at 8±2°C for 4 days. Tespong’s weight loss, moisture content, color, and texture were observed during the storage time. As a control treatment, 2 groups of tespong were prepared. Control 1 was placed directly in a chiller with a temperature of 5±2°C whereas control 2 was in a laboratory room. The results showed that crisping treatment with 30°C soaking temperatures and 3 minutes soaking time gave better results in maintaining tespong’s freshness where weight loss, moisture content, L, a*, b*, and texture were -5.67%, 89.36%, 52.40, -14.54, 23.84, and 388.44 g/d, respectively.
Potensi Pemanfaatan Kulit Jeruk Lemon Afkir (Citrus limon (L.) var. Eureka) sebagai Bahan Pembuatan Minyak Asiri Andri Permana; Sarifah Nurjanah; S Rosalinda; Farah Nuranjani
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 11 No 2 (2023): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jrpb.v11i2.548

Abstract

Unutilized (off-grade) lemon with slight damage have been utilized for lemon juice, even most of that just become waste. In fact, lemon by-product also have many essential compounds. This research aimed to determine the potential and optimal conditions of unutilized lemon peels using distillation process. The research used experimental methods with a factorial complete randomized design. This research used 3 factors including the conditions of material, distillation methods, and time of distillation. Essential oils parameters observed included oil yield, volatile compounds, and physico-chemical characteristics. Based on the results of research, unutilized lemon produced a concentration of limonene compounds of 63,8—67,7%. Optimal treatment was found in the fresh material, using steam and hydro distillation for 6 hours that produced an oil yield of 0.25%, a specific gravity of 0.856 g/ml, an acid value of 2.749 mg KOH/g, and an odour close to fresh lemon peel.
Utilization of Inferior Green Coffee Bean Oil for Air Freshener Gel S. Rosalinda; Nadyah Rachma Dewi; Sarifah Nurjanah
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 1 (2022): March
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i1.48-59

Abstract

More than 20% of the coffee beans harvested are not traded because they do not pass the sorting. Coffee beans that do not pass the sorting are referred to as inferior green coffee beans (inferior coffee).. The purpose of this study was to determine the combination of inferior coffee oil concentration and gel material that gave the best characteristics as air freshener. This research method is a laboratory experimental method with descriptive analysis. The research stages consisted of preparation of materials and equipment, extraction of inferior coffee with the soxhletation method and making air freshener. The concentration of inferior coffee oil used was control (A0) 1%; (A1); 2% (A2); 4% (A3) and each concentration was added to a formulation consisting of 0.75 grams of carrageenan, 0.5 grams of agar, 0.25 grams of pectin, 0.05 grams of sodium benzoate, 5 grams of propylene glycol and aquadest to adjust the amount to 50 grams. Product testing parameters consist of strength test, gel hardness test, gel stability test, preference test, liquid evaporation test and fragrance resistance test. The results showed that the best air freshener with 4% coffee oil concentration resulted in a gel strength of 482 g/cm2; gel hardness test 1064 g/cm2; gel stability test 2.387%; preference test 2.78; evaporation test is 69.632% and the value of fragrance resistance is 3.003. Keyword: soxhletation, air freshener gel, inferior coffee oil, gel material, extraction
Optimization of Red Ginger (Zingiber officinale var. Rubrum) Extraction Using Microwave Assisted Hydrodistillation Method Sarifah Nurjanah; Sari Rosalinda; Dwita Putri Andina
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 2 (2024): June 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i2.369-380

Abstract

Red ginger is a spice plant that has high economic and social value. One of the uses of red ginger is to process it into a product, namely essential oil. This study aims to determine the optimization of the extraction process conditions on solvent volume, time, and extraction power that can produce optimum yield and residual content of red ginger essential oil solvent. The extraction was carried out with the help of microwaves. The research method is experimental design and optimization process with Response Surface Methodology (RSM) type Box-Behnken Design (BBD). The results showed that the optimum yield was at 700 mL solvent volume, 1 min extraction time, and 10% power (69.9 watts) with the equation Y = 0.2076 + 0.0262A – 0.0300B – 0.0013C and the concentration conditions the optimum remaining solvent with the equation Y = 4.98 – 1.0000A + 4.56B + 5.44C. The optimal yield of red ginger essential oil was 0.205%, with a residual solvent content of 3.8%, specific gravity 0.885, acid number 1.399, refractive index 1.485. The results of the optimum residual solvent content of -6.023%. Based on the results obtained, the yield value with the help of microwaves is higher than that without the help of microwaves. Keywords: Essential oil, Microwave, Residual solvent content, Response surface methodology (RSM), Yield.
Pemodelan kondisi hidrodistilasi minyak atsiri jahe merah (Zingiber officinale var. Roscoe) dengan menggunakan Response Surface Methodology Annissa Ramadhanti; Sarifah Nurjanah; Asri Widyasanti; Nurul Ainina
AGROINTEK Vol 18, No 2 (2024)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v18i2.18904

Abstract

Red ginger contains volatile components that are essential oils. Essential oils can be obtained through the distillation method. Hydrodistillation is a method of distillation that involves providing direct contact between the materials and water at a high temperature, which is influenced by several factors, including time and the solvent feed ratio (SF ratio). This study aimed to determine the best conditions for high yields and essential oil quality using SNI No. 06-1312-1998 as a reference. The research method used was experimental research, and optimization was carried out using Response Surface Methodology (RSM) with CCD design. The treatments for distillation were time (2 hours, 4 hours, and 6 hours) and solvent feed (SF) ratio (8:1, 10:1, and 12:1). The parameters observed were yield, residual solvent content, specific gravity, refractive index, and acid number. The results showed that the time and SF ratio variables had no significant effect on the yield but had a significant effect on the residual solvent content. The optimization process resulted in a time of 6 hours and a solvent volume of 720 ml (ratio 1:12), yielding 0.14 with a residual solvent content of 3,557%. The characteristics of the essential oils produced were 0.8794 for the specific gravity, 1.473 for the refractive index, and 2.13  for the acid number. Red ginger essential oil met the requirements of SNI ginger oil on the parameters of specific gravity and refractive index.
Karakteristik dan Komposisi Minyak Atsiri Kulit Jeruk Nipis Pada Berbagai Lama Waktu Penyulingan Menggunakan Metode Hidrodistilasi Fakhira, Qonita Raihani; Nurjanah, Sarifah; Rosalinda, S.
Teknotan: Jurnal Industri Teknologi Pertanian Vol 17, No 3 (2023): TEKNOTAN, Desember 2023
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jt.vol17n3.8

Abstract

Kulit jeruk nipis merupakan produk sampingan yang dihasilkan dari pengolahan sari buah jeruk nipis menjadi berbagai produk olahan. Kulit buah jeruk nipis mengandung berbagai senyawa kimia bermanfaat seperti flavonoid, terpenoid, fenolat, limonoid, alkaloid dan minyak atsiri. Minyak atsiri jeruk nipis dihasilkan dari proses ekstraksi. Waktu ekstraksi merupakan salah satu kunci untuk menghasilkan minyak atsiri dengan kualitas baik. Tujuan dari penelitian ini adalah untuk mengetahui karakteristik dan komposisi senyawa kimia yang dihasilkan minyak atsiri kulit jeruk nipis dengan metode ekstraksi air (hidrodistilasi) pada berbagai waktu untuk mendapatkan kondisi terbaik. Penelitian ini menggunakan metode eksperimen dengan menerapkan empat perlakuan yang berbeda yaitu ekstraksi dengan lama waktu 3 jam, 4 jam, 5 jam, dan 6 jam. Parameter yang diamati adalah rendemen, berat jenis, indeks bias, warna dan komposisi kimia minyak atsiri yang dihasilkan. Rendemen minyak atsiri dari waktu ekstraksi 3 jam, 4 jam, 5 jam, dan 6 jam adalah 1,715%, 0,899%, 1,975% dan 1,909%. Berat jenis minyak atsiri 3 jam, 4 jam, 5 jam, dan 6 jam adalah 0,853, 0,851, 0,840 dan 0,862. Indeks bias minyak atsiri hasil ekstraksi selama 3 jam, 4 jam, 5 jam, dan 6 jam adalah 1,478, 1,479, 1,48 dan 1,482. Komposisi kimia minyak atsiri dianalisis menggunakan GC-MS dimana hasil terbaik diperoleh dari waktu ekstraksi 5 jam yang mengandung 86,22% monoterpen, 5,81% seskuiterpen, 1,77% terpinena dan 2,07% aldehida alifatik.
Co-Authors Abdullah Md Zain Abil Fadila Ade Moetangad Kramadibrata Agil Firhan Iskandar Agnes Klarasitadewi Ahmad Thoriq Ainina, Nurul Akbar Hanif Dawam Abdullah, Akbar Hanif Dawam Anas Bunyamin Andina, Dwita Putri Andri Permana Annissa Ramadhanti Arinda Nur Ariva Asri Widyasant Asri Widyasanti Atiek Rostika Noviyanti Azizah, Ise Wafiq Bambang Nurhadi Boy Macklin Pareira Prawiranegara Budhi Indrawan David S. Marpaung Dedy Prijatna Dina Aprilia Dwi Merita Rosi Dwita Putri Andina E Gumbira-Sa’id - Efri Mardawati Eki Dwiyan Saputra Elazmanawati Lembong Ema Komalasari Etty Riani Fakhira, Qonita Raihani Fany Trihapsoro Farah Nuranjani Farah Nuranjani Fathia Salsabila Emmaputri Fawaiz, Husni Syamil Fitry Filianty Galih Adhi Respati Gumbira-Sa'id, E Handarto HARYONO Haryono Haryono Haryono Haryono Hilman Syaeful Alam Huda Nurul Quddus Ibrahim A. I. Ifmalinda Ilham Fajri Imas Siti Setiasih Indira Lanti Kayaputri Intan Aprilia Irene June Sidabutar Irmayanti, Maya Isti Sulistiani Jeremia Kristian Khaswar Syamsu Khaswar Syamsu - Kurnia, Ina Laily Rizki Safira Lita Fitriyani Khairunisa M. Ade Moetangad Kramadibrata Maya Damayanti Mimin Muhaemin Mochammad Rizal Mochammad Rizal Muhammad Gilang Ramadhan Muhammad Rizky Ramanda Muhammad Saukat Nadyah Rachma Dewi Namira, Tiara Nedia Cahyati Muchtarina Nedia Cahyati Muchtarina Nissa, Rossy Choerun Novia Dwi Anggraeni Nur Oktavia Benedicta Nuranjani, Farah Nurfauziah, Isni Nurpilihan Bafdal Nurul Ainina Nurul Ainina Pirdani Nur Fitri Prisilia Ratna Setyaningrum Puji Lestari Pusponegoro, Annisa Putri, Farinissa Deliana Qurratu’ain, Yona Rahmawati, Rahmi Reza Permana Aji Rienoviar Rienoviar Rienoviar, Rienoviar Rifki Amrullah Rizika Wulandari Rizky Mulya Sampurno Rizqi Putri Fathoni Rosalinda, Sari Roshita Ibrahim Rudi Adi Saputra Ruth Anggia Assyera S Rosalinda S. Rosalinda S. Rosalinda S. Rosalinda S. Rosalinda, S. S.Rosalinda Rosalinda Salman Hafidz Sarinarulita Rosalinda Sekar Widyaningrum Selly Harnesa Putri Septianti, Nur Alifa Shayana Junita Sudaryanto Zain Sudaryanto Zain Sudaryanto Zain Sudaryanto Zain Suprihatin - Suprihatin Suprihatin Thoriq, Ahmad Tio Febriananda Tita Rialita Totok Herwanto Totok Pujianto Totok Pujiyanto Wahyu Daradjat Wahyu Kristian Sugandi Widyaningrum, Sekar Yati B Yuliyati Yati B. Yuliyati Yeyen Nurhamiyah, Yeyen Yona Qurratu’ain Zahrah Eza Arpima Zhaqqu Ilham Alhafidz Zulfaa Irbah Zain ‪Irna Dwi Destiana