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Yelmira Zalfiatri
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PEMANFAATAN EKSTRAK KULIT BUAH NAGA MERAH DAN EKSTRAK JAHE MERAH DALAM PEMBUATAN MINUMAN BUBUK INSTAN Victor David; Noviar Harun; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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The research was to obtain the best formulation of extract red pitaya peels and extract making red ginger in instant powder drinks. The method used in this research was a complete random design with 4 treatments and 4 replications. The treatments were P1 (90% red pitaya peel extracts : 10% red ginger extracts), P2 (80% red pitaya peel extracts : 20% red ginger extracts), P3 (70% red pitaya peel extracts : 30% red ginger extracts), P4 (60% red pitaya peel extracts : 40% red ginger extracts). The results show that the usage red pitaya peel extracts and red ginger extracts significantly influenced the moisture content, ash content, total sugar content, antioxidant content, descriptive value of taste, aroma, texture and color of instant powder. The best treatment was P4 (60% red pitaya peel extracts : 40%  red ginger extracts) with moisture content of 2.53%, ash content 0.77%, total sugar content 64.77%, antioxidant activity 104.58 ppm, descriptive sensory of taste 4.80, aroma 4.40, texture 3.97, color 2.83 and over all acceptance test 4.11.Keyword : instant powder, quality, red pitaya peel, red ginger.
PENGARUH LAMA PENYIMPANAN TERHADAP KARAKTERISTIK UMBI DAHLIA Eko Herianto; Raswen Efendi; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Dahlia plant is one ornamental plant that has tuber with carbohydrate such as inulin. The aimed of this research to determine the effect of time storage in room temperature to dahlia tuber’s chemical contents. This research executed by experimentally using Complete Randomized Design with five treatments and three repetitionswhich followed by Duncan’s New Multiple Range Test (DNMRT) at level 5%. The observation where with P1 (control), P2 (dahlia plant storaged in 7 days), P3 (dahlia plant storaged in 14 days), P4 (dahlia tuber storaged in 21 days), and P5 (dahlia plant storaged in 28 days). The observation result,the dahlia tuber that stored at room temperature for 28 days has lost weight 13,89%, water content 7,99%, ash content 0,53%, crude fiber3,08%, and inulin 20,54%. Mean while, sugarreduction has been increasing amount 3,58. Keywords:Inulin, dahlia tuber, time storaged.
PERBEDAAN SUHU DESTILASI TERHADAP MUTU DAN AKTIVITAS ANTIBAKTERI ASAP CAIR DARI SABUT KELAPA MUDA Andesmar Andesmar; Raswen Efendi; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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This study aims to obtain optimum liquid smoke from young coconut fibers with different destillation temperature treatments, and meet SNI number 01-2725-2009. This research was conducted using a Completely Randomized Design (CRD) consisting of 4 treatments and 4 replications to obtain 16 experimental units. The data obtained were statistically analyzed using ANOVA, if F is greater than or equal to F table, then continued with DNMRT test at the 5% level. The results of each treatment showed significant differences in each treatment from pH, and acid levels, but did not have a significant effect on antibacterial activity. The best selected treatments in this study were distillation temperatures of 200°C with a pH of 2.52, acid levels of 1.158%, composition (% area) phenol of 64.06%, antibacterial against Eschericia coli 7.60 mm, and antibacterial against Staphylococcus aureus 13.57 mm. Key words: young coconut fiber, destilation, liquid smoke 
KUALITAS PAPAN PARTIKEL DARI LIMBAH SERABUT KELAPA SAWIT DENGAN PEREKAT DAMAR Riza Fahlevi; Farida Hanum Hamzah; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Palm fiber is a waste of crude palm oil processing that has not been used optimally. This study aims to obtain the best resin adhesive concentration in the manufacture of particleboard from palm oil fibers. The research was conducted experimentally using a completely randomized design (CRD) with 5 treatments and 3 replications. The treatment in this study was the ratio of oil palm fiber and resin adhesive as follows: P1 (90: 10), P2 (88: 12), P3 (86: 14), P4 (84: 16), P5 (82: 18). The data obtained were analyzed statistically using Analysis of Variance (ANOVA) and Duncan New Multiple Range Test (DNMRT) at the 5% level. The results showed that the composition of oil palm fiber and resin adhesive had a significant effect on density, water content, water absorption, thickness expansion, modulus of elasticity, and modulus of rupture. The best treatment chosen was treatment P5 with a density value of 0.93 g/cm3, water content of 4.49%, water absorption 54%, thickness development 37%, modulus of elasticity of 1283.47 kgf/cm2, modulus of lift 13.03 kgf/cm2. Keywords: Particle board, oil palm fiber, resin adhesive 
Peningkatan Produktivitas Pulp dan Kertas dengan Pendekatan Green Productivity PT. Riau Andalan Pulp And PaperKabupatenPelalawan Fakhruni Alisya; Farida Hanum Hamzah; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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The increase of consumer demand for pulp and paper encourage PT. Riau Andalan Pulp and Paper to be able to improve its production and performance in order to compete with other similar companies. However, along with the enhancement in production, it also increase the amount of waste generated. The increasing amount of waste due to the increased of production capacity encourages PT. Riau Andalan Pulp and Paper to minimize production waste by using a method called green productivity in order to improve the environmental performance. Based onresearch done in PT. Riau Andalan Pulp and Paper, there are two alternative solutions to minimize waste that also improve the productivity and environmental performance which was to burn the sludge produced from IPAL and to produce fertilizer from IPAL sludge. However, the green productivity index of the first alternativewas biggerthan the second alternative which is 3,98. The chosen alternative was toburn the sludge produced from IPAL to the power boiler. This solution increased productivity, where the initialproductivity was2,31 to 2,43. The chosen alternative solutions may improve the environmentalperformance indicator from 0,59to0,61.Keywords:   green productivity, productivity, environmental performance indicator, PT. Riau Andalan Pulp and Paper
PEMANFAATAN TEPUNG KACANG MERAH DAN PATI SAGU PADA PEMBUATAN CRACKERS Weni Mulyani Asfi; Noviar Harun; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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The purpose of this research was to the best obtain the ratio of red bean flour and sago starch selected in the making of crackers. This research used Complete Randomized Design (CRD) with 6 treatments and 3 replications which were followed by Duncan’s New Multiple Range Test (DNMRT) at level 5%. The treatments in this research included K0S0 (ratio of red bean flour and sago starch 100 : 0), K1S1 (ratio of red bean flour and sago starch 90 : 10), K2S2 (ratio of red bean flour and sago starch 80 : 20), K3S3 (ratio of red bean flour and sago starch 70 : 30), K4S4 (ratio of red bean flour and sago starch 60 : 40), and K5S5 (ratio of red bean flour and sago starch 50 : 50). The result of analysis showed that the ratio of red bean flour and sago starch significantly affect on water content, ash content, protein content, and sensory test. The best treatment crackers was K5S5 with water content (2,33%), ash content (2,18%), protein content (8,57%), and sensory test with colour of yellowish brown, flavorful red beans and sago starch, a little taste of red beans and sago starch, crunchy texture, and overall assesment of crackers was  preferred by the panelist. Keywords: crackers, red bean flour and sago strach
Peningkatan Skala Percobaan (Scale Up Experiment) Pengolahan Limbah Cair Kilang Sagu secara Aerobik menggunakan Teknologi Simbiosis Mutualisme Mikroalga Chlorella sp. dan Agrobost Khairunnisa Amanda; Fajar Restuhadi; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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The purpose of this research was to get selected treatment of microalgae Chlorella sp. as a reducing polutan of sago liquid waste with the concentration of Agrobost and utilize symbiotic technology between the two.  This research used a complete randomized design (CRD) with 5 treatments and 3 replications.  In this research was microalgae 800 ml/L (6.110.000 cell/ml) of sago liquid waste with 5 treatments of Agrobost (0% v/v, 2% v/v, 4% v/v, 6% v/v, and 8% v/v).  The data obtained were analyzed statistically using ANOVA and DNMRT at 5 % level.  The result showed that the concentration of Agrobost had significant affect for Nitrate, Phosphate.  The treatment chosen from the result of this research was the P4 treatment showed the highest level of reduction which had the value Phospate 3,16 mg/L, Nitrate 0,3601 mg/L. Keywords: Sago liquid waste, Agrobost, microalgae Chlorella sp.
KAJIAN SIFAT FISIKO-KIMIA TEPUNG AMPAS TAHU DITINJAU DARI LAMA PERENDAMAN DALAM NATRIUM METABISULFIT (Na2S2O5) DAN LAMA PENGERINGAN Rahot Manto Sinaga; Netti Herawati; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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The purpose of this research is to obtain the best combination of treatments between the soaking time of sodium metabisulfite (Na2S2O5) and the drying time of the physico-chemical of tofu pulp flour. This research was conducted with nine treatment combinations and three replications. The treatment used was soaking time (L) and drying time (P). L1P1 (15 minutes, 3 hours), L1P2 (15 minutes, 4 hours), L1P3 (15 soaking, 5 hours), L2P1 (30 minutes, 3 hours), L2P2 (30 minutes, 4 hours), L2P3 (30 minutes, 5 hours), L3P1 (45 minutes, 3 hours), L3P2 (45 minutes, 4 hours), L3P3 (45 minutes, 5 hour). The treatments of selected in this research was L3P1 with  water content of 6.47 %, ash content of 1.92 %, protein content of 17.03 %, and sensory assessment produced a rather white color with a score of 3.77, the aroma was rather unpleasant with a score of 3.07, and a rather subtle texture with a score of 3.60.
Pemanfaatan Sekam Padi dan Kulit Batang Sagu terhadap Mutu Briket dengan Perekat Tapioka Yasa Rudin; Raswen Efendi; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
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Briquette is a biomass fuel. Biomass has the potential and benefits of being an alternative energy source to replace fossil fuels that exist today, biomass has an abundant stock or supply.The biomass used in this study was rice husk and sago steam bark. This study used a completely randomized design with a sample of four and four replications. The treatment was against the ratio of rice husk and sago bark 75:25, 50:50, 25:75, and 0: 100.). Data were statistically analyzed using anova andduncan’s new multiple range test (DNMRT) at 5% level. The results showed that the ratio of rice husk and bark significantly affected moisture, ash, density, rainfall density, fuel, and volatile material. The selected treatment in this researchrice husks and sago bark 25:75 with density of 0.500g/cm3, moisture content 5.913%, ash content 7.352%, evaporation content 2.582 %, carbon content can be used 84.152%, the heating value is 6604.630 cal/g, and the fuel power is 0.003 g/sec.  Keywords: Briquette, rice husk, sagosteam bark
PEMANFAATAN TEPUNG BIJI DURIAN DAN TEPUNG KACANG HIJAU DALAM PEMBUATAN FLAKES Luky Prasetyo; Akhyar Ali; Yelmira Zalfiatri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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This study aimed to get the best ratio of durian seed flour and mung bean flour judging from the content of nutrients and organoleptic tests in making of flakes. The research was conducted with an experimental method using a Completely Randomized Design with five treatments and three replications. The treatments in this study were ratio of durian seed flour and mung bean flour 100%:0%, 90%:10%, 80%:20%, 70%:30%, and 60%:40%. Data were statistically analyzed by using Analysis of Variance and followed by Duncan's New Multiple Range Test at level 5%. Results of the analysis showed that ratio of durian seed flour and mung bean flour significantly affected on moisture, ash, fat, protein, carbohydrate, and crude fiber content as well as descriptive and hedonic sensory test of the flakes. Based on this research, the best treatment was ratio of durian seed flour and mung bean flour 60%:40% which had moisture 4.28%, ash 3.51%, fat 1.29%, protein 10.45%, carbohydrate 80.46% and crude fiber 2.96%. Characteristics flakes of best treatment based on descriptive test was  golden yellow color, mung bean flavor, mung beantaste, andhard texture. Keywords:Flakes, durian seed flour, mung beanflour.
Co-Authors Adeline Palma Sari Agus Sutikno Ahmad Ibrahim Ahmad Ibrahim Roni Surya Hasibuan AINIL HIFDA DAULAY Akhyar Ali Andesmar Andesmar Angelia Angelia Angga Pramana Angga Pramana Angga Pramana, Angga Antoni, Fiki Fadel Arum Rovarti Ningsih Candra Efendi Hasibuan Carles Pernando Chandra Gunawan Chandra, Rani DAULAY, AINIL HIFDA Dewi Fortuna Ayu Dewi, Yossi Kharisma Dewi, Yossie Kharisma Dini Aji Pringgondani Eko Herianto EKO WAHYUDI Erizal Thoyeb eykel sura bema FADLA B. SYARIF Faizah Hamzah Faizah Hamzah Fajar Restuhadi Fajar Yuliandri Fakhruni Alisya Farida Hanum Hamzah Fung, Liem Khe GUSLIKO NURMAN Hakim Santo Hamzah, Farida Hanum Handoko, Tito Harsanto Mursyid Hasnah AR, Nur Hasnah, Nur Heni Adhianata, Heni Idwal Idwal Suripto Ilhamsyah Azri Imelda Yunita Ishak Alhafis Jum'atri Yusri Jum’atri Yusri Khairunnisa Amanda Kurnia, Ridho Lasron Pahala Tua Nainggolan Listya Eka Wati Luky Prasetyo M Fazil Marita TM Simbolon MELIYANA MELIYANA Mhd Andry Kurniawan Muhaiminati Adlina Muhammad Luthfi Muhammad Nur Cahyanto Netti Herawati Nita Rimayanti Nopiani, Yanti Noviar Harun Nul Hakim, Lukman NURMAN, GUSLIKO Pasaribu, Jekson Putra, Diswanto Putri Nada Sirait Rahmadini Payla Juarsa Rahmayuni Rahmayuni Rahmayuni Rahmayuni, Rahmayuni Rahot Manto Sinaga Raiyan Renadi Ramayuni Ramayuni Randa, Agustian RARA ANIRA Raswen Efendi Renadi, Raiyan Rika Afrianto Riza Fahlevi Rizky Zulhardi Rossi, Evy Rozikhin RUSLI RUSTAM Saitun, Saitun Shanti Fitriani Silaban, Mastrina Siti Nurhajijah SITI SANTUN MULIA Sunardi Setiaries Sunardi Supranto Supranto Suryo Purwono Taufiq Maulana Taufiq Maulana USMAN PATO Victor David Vonny Setiaries Johan Weni Mulyani Asfi Wulan Kumala Dewi Yasa Rudin Yelly Zamaya Yulia Citra Yuliandri, Fajar Yunisa, Fina Yusmarini Yusmarini Zulhardi, Rizky