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All Journal Jurnal Teknologi Dan Industri Pangan Agrotekno Buletin Udayana Mengabdi JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Itepa : Jurnal Ilmu dan Teknologi Pangan Agrointek Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) agriTECH Jurnal Ilmiah Teknologi Pertanian Agrotechno Jurnal Sains dan Teknologi Pertanian Journal of Fibers and Polymer Composites International Journal of Economics, Business and Innovation Research
I Wayan Arnata
Program Studi Teknologi Industri Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indoneser
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Manajemen Rantai Pasok Beberapa Komoditas Hortikultura di Kabupaten Klungkung I Wayan Gede Sedana Yoga; I Wayan Arnata
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 2 No 1 (2017)
Publisher : Universitas Udayana

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Abstract

Tujuan penelitian adalah: identifikasi struktur rantai pasok hortikultura dan menganalisis nilaitambah yang diperoleh pada masing-masing rantai, sehingga diperoleh distribusi nilai tambahpada masing-masing rantai yang nantinya akan bermuara pada rekomendasi pengembangansistem manajemen rantai pasok hortikultura di Kabupaten Klungkung. Metode yang digunakanyaitu metode kualitatif dan kuantitatif. Metode kuantitatif digunakan untuk mengukur kinerjakunci rantai pasok dan mengukur nilai tambah. Untuk kinerja kunci rantai pasok digunakanmetode Analytical Hierarchy Process (AHP), sedangkan untuk mengukur nilai tambah digunakanmetode Hayami. Struktur rantai pasok pada komoditas cabai adalah Petani – Pedagang PasarKlungkung – Konsumen, sedangkan pada komoditas jagung, struktur rantai adalah Petani –Pedagang Pasar di Denpasar – Konsumen serta Petani (Supplier) – Supermarket – Konsumen.Manajemen rantai pasok hortikultura yang diterapkan di Klungkung secara umum masih bersifattradisional. Kinerja kunci rantai pasokan mempertahankan “Kemitraan yang berkelanjutan”(0,325), dengan indikator kinerjanya adalah atribut reliabilitas (keandalan) (0,257). Untuk atributreliabilitas (keandalan), indikator kinerja yang harus ditingkatkan adalah: pemenuhan pesanansecara sempurna, kualitas produk, serta kualtas proses. Nilai tambah yang diterima petani cabaiadalah sebesar Rp 3.325/kg, dengan pendapatan tenaga kerja adalah sebesar Rp 9.448/kg, dankeuntungan yang diperoleh adalah minus Rp 6.123/kg. Nilai tambah yang diterima petani jagungadalah sebesar Rp 2000/kg, pendapatan tenaga kerja adalah sebesar Rp 960/kg, dan keuntunganyang diperoleh adalah Rp 1040/kg.
Optimasi ph dan Suhu Proses Sakarifikasi Fermentasi Simultan dalam Produksi Bioethanol dari Ubi jalar Bambang Admadi Harsojuwono; I Wayan Arnata
Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Vol 1, No. 1, 2014
Publisher : Master Program of Food Science and Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

The Research objective was to obtain the optimum pH and temperature of simultaneous fermentation scarification (SFS) process on the ethanol production of the sweet potato hydrolyzed. This research used the block random design with factorial experiment. First factor was pH (4.5 ; 5.0 ; 5.5) and the second factor was temperature (30, 35, 40 and 45 oC). The research was conducted with the following stages : production of sweet potato hydrolyzed by enzyme in the liquidation process, preparation of S. cerevisiae culture and simultaneous fermentation scarification process. The results showed that the optimum simultaneous fermentation scarification process on temperature of 35oC and pH 4,5 that produce the ethanol of 5,32% (v/v) with the ethanol produce efficiency of 35,79% ; fermentation efficiency of 70,16% and yield of 11,79%.Key words: sweet potato, simultaneous fermentation scarification, pH and temperature
Profil Permukaan Dan Gugus Fungsi Bioplastik Pati Singkong Termodifikasi Bambang Admadi Harsojuwono; I Wayan Arnata; Sri Mulyani
Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Vol 3 No 2 (2016)
Publisher : Master Program of Food Science and Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

Tujuan penelitian adalah  mengidentifikasi profil permukaan dan gugus fungsi bioplastik yang terbuat dari pati singkong termodifikasi. Penelitian dilaksanakan dengan metode eksplorasi, yang diawali dari pembuatan bioplastik pati singkong termodifikasi dan dilanjutkan dengan mengamati profil permukaan bioplastik pati singkong termodifikasi pada sisi melintang dan membujur dengan menggunakan Scan Electron Microscope (SEM), serta mengidentifikasi gugus fungsi pada polimer yang terbentuk dalam bioplastik menggunakan spectrometer FTIR. Hasil peneltian menunjukkan bahwa profil permukaan bioplastik pada tampak membujur menunjukkan adanya jaringan-jaringan gel yang dibentuk oleh bahan polimer pati termodifikasi dengan rongga-rongga udara. Profil bioplastik pati singkong (tapioka) tampak samping atau melintang menampilkan susunan berlapis ke arah vertikal dengan ketebalan 379 mikron, sementara itu perbesaran 2500 kali tampak melintang menunjukkan jaringan-jaringan gel yang dibentuk oleh bahan polimer pati yang tersusun berbentuk gelombang atau ombak ke arah vertikal. Bioplastik yang dibentuk dari polimer pati termodifikasi mengandung gugus fungsi hidroksil (O-H) yang berikatan dengan hydrogen, alkana (C-H), aldehida (C-H), ikatan hidrogen asam karboksilat, alkuna (C=C), ester, senyawa aromatik sederhana, karboksil (C-O), alkena (C=C) serta hidrokarbon -(CH2)n.
Characteristic of bioplastic’s physical and mechanical (Study on Tapioca Concentration and Composition Mixture of Plasticizer) Bambang Admadi Harsojuwono; I Wayan Arnata
Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Vol 3 No 1 (2016)
Publisher : Master Program of Food Science and Technology, Faculty of Agricultural Technology, Udayana University

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This study aims to (1) the effect of the concentration of starch and  ratio mixture of plasticizer to the physical and mechanical characteristics of bioplastics (2) determine the concentration of starch and plasticizer RATIO mixture  that results in physical and mechanical characteristics of bio plastics best. The experiment was conducted using a factorial randomized block design. The first factor is the concentration of tapioca consisting of 3 levels 4%, 5% and 6% (w / w). The second factor is the   mixture plasticizer ratio  of glycerol and sorbitol   consisting of 5 levels ie (100: 0)%, (95: 5)%, (90:10)%, (85:15)%, (80:20)% b / b. Each combination of treatments classified into 2 time  processing bio plastics, so there are 30 experimental units. Variables observed water content, elongation at break, tensile strength and Young's modulus . The data obtained were analyzed of variant and  test of Duncan's. The results showed that the concentration of tapioca and  mixture plasticizer had no effect on water content but significant effect on the elongation at break, tensile strength and Young's modulus. The concentration of starch 6% with a ratio of mixture of plasticizers glycerol: sorbitol ( 100: 0) produces the best characteristics of bioplastics with water content of 3.98%, elongation at break of 18.75%, the tensile strength of 930 MPa and a Young's modulus of 50 MPa.
VARIASI PH PADA MEDIA TUMBUH DAN SUHU FERMENTASI DALAM MEMPRODUKSI ETANOL OLEH ISOLAT BU3.111E1 Intan Tiar Malau; I Made Mahaputra Wijaya; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 10 No 2 (2022): Juni
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (665.432 KB) | DOI: 10.24843/JRMA.2022.v10.i02.p08

Abstract

The aim of this research was to determine the growth phase curve of BU3.111E1 and to determine the effect of various pH and temperatures on BU3.111E1 isolate growth media to produce ethanol. These experiment was carried out in stages, namely culture stock rejuvenation, culture grow and adjustment, measuring the effects of various pH and temperature in media upon fermentation followed by distillation. This study used two variations of pH (4.0 and 5.0) and three variations of temperature (18, 24 and 30°C) and two repetitions. The growth curve of BU3.111E1 isolate showed that the isolate grew in 33 hours, starting from the exponential phase, stationary phase to the death phase. The fermentation results showed that, pH 4.0 at 30°C produced the highest ethanol which was 15.05 mL with a total dissolved solids of 2.50 (?% brix). pH 5.0 at 18°C ??was produced the lowest ethanol, which was 3.47 mL with a total dissolved solids of 0.65 (?% brix). The results indicate that pH and temperature affect bacteria during fermentation to produce ethanol.
Effect of Alkaline Concentration Treatments on the Chemical, Physical and Thermal Characteristics of Cellulose from Tapioca Solid Waste I Wayan Arnata; Bambang Admadi Harsojuwono; Amna Hartiati; Anak Agung Made Dewi Anggreni; Dewi Sartika
Journal of Fibers and Polymer Composites Vol. 1 No. 2 (2022): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (784.354 KB) | DOI: 10.55043/jfpc.v1i2.57

Abstract

Tapioca solid waste (TSW), as a source of natural fiber, is produced in abundance, but its utilization is minimal and even has the potential to pollute the environment. Unfortunately, TSW fiber has low physical, mechanical, and thermal characteristics that limit its application. Therefore, one way to improve the characteristics of TSW so that the fiber can be applied in various fields is by using the modified alkalization method. This study aims to determine the effect of alkali concentration on cellulose's chemical, physical, and thermal characteristics from TSW. Alkali treatment used NaOH solution of 0%, 5%, 10%, 15%, and 20% (v/w). The chemical characteristics of the fiber were analyzed for moisture, starch, lignin, hemicellulose, and cellulose content. Fiber surface morphology was analyzed by scanning electron microscopy (SEM), functional group changes with Fourier transform infrared (FTIR), degree of crystallinity with X-ray diffraction (XRD), and thermal stability with thermogravimetric analysis (TGA). The results showed that alkaline treatment affected changes in the chemical, physical, and thermal characteristics of cellulose from TSW. The increasing concentration of NaOH causes the water and cellulose content to increase, while the starch, hemicellulose, and lignin content decrease. Surface morphology is getting rougher, fiber dimensions increase to 10% NaOH concentration, but at higher concentrations, it causes a decrease in dimensions. FTIR analysis showed that the intensity of the hemicellulose and lignin functional groups decreased with increasing NaOH concentration. The degree of crystallinity and crystal size increased until the NaOH concentration was 10%, but at higher concentrations, it tended to decrease. Meanwhile, d-spacing increased with increasing NaOH concentration. The thermal stability of the fiber tends to decrease with increasing NaOH concentration. Alkalized cellulose from TSW has the potential to be used in a wider field, such as adsorbent and composite reinforcing agent.
Pengaruh Konsentrasi Asam Stearat dan Selulosa dari Limbah Padat Pengolahan Tapioka Terhadap Karakteristik Biokomposit Foam Tapioka dan Glukomanan Pupung Ferdiansyah; Bambang Admadi Harsojuwono; I Wayan Arnata
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 2 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i02.p04

Abstract

Abstract This study aims to determine the effect of the concentration of stearic acid and cellulose from tapioca processing solid waste on the characteristics of tapioca foam biocomposite and glucomannan and to determine the optimal concentration of stearic acid and cellulose from tapioca processing solid waste so as to produce the best characteristics of tapioca foam and glucomannan biocomposite. This study used a randomized block design with two factors. Factor I is the concentration of stearic acid which consists of 3 levels (2% ; 4% ; 6%). Factor II is the concentration of maleic anhydride which consists of 3 levels (2.5%; 5%; 7.5%). The variables observed were tensile strength/breaking stress (tensile strength), density (mass density), tear resistance, compression set, thickness, swelling, and biodegradation time. The data obtained were analyzed for diversity (ANOVA) and continued with Duncan's test using Microsoft Excel 2016. The results showed that the concentration of stearic acid had a very significant effect on tensile strength, tear resistance, compressibility, swelling, biodegradation, but had no significant effect on density and thickness. The concentration of cellulose has a very significant effect on tensile strength, tear resistance, compressibility, swelling, biodegradation and has a significant effect on thickness, but has no significant effect on density. The interactions have a very significant effect on tensile strength, tear resistance, permanent compression, swelling, biodegradation, but have no significant effect on density and thickness. Concentration of 6% stearic acid and 5% cellulose produced the best foam biocomposite with tensile strength value of 0.69 N/cm2, tear resistance 0.49 N/cm2, density 0.20 g/ml, constant compression 7.61%, thickness 10 .27 mm, swelling 0.55%, and degradation time for 13.67 days. Keywords: Biocomposite foam, tapioca, glucomannan, stearic acid, cellulose.
Deteksi Jejak Komponen Polimer Geomembran pada Garam dengan Alas Pengering Plastik Geomembran Desi Lusiani Pasaribu; I Wayan Arnata; Bambang Admadi Harjosuwono
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 2 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i02.p01

Abstract

The use of geomembrane plastic in salt production has been effectively used since 2012. Geomembrane plastic can increase the growth of salt production by almost 100%. Geomembrane plastic is a relatively thin, interconnected polymer sheet. Geomembrane plastic is used repeatedly for approximately two years and is exposed to sunlight. This research was conducted to determine the traces of geomembrane polymer components in salt dried in the sun using a geomembrane plastic drying mat. UV-Visible was used to detect the presence of traces of polymer components and determine the functional groups of polymer components using FTIR spectroscopy. The results of the UV-Visible identification of salt water and polluted distilled water showed the presence of two migrating chemical elements and the FTIR identification of the samples showed absorption peaks at 3874-3209 cm?¹ O-H, 3059-2782 cm?¹ C-H, 1709-1509 cm?¹ C=C, 1378 cm?¹ CH and 1224-1068 cm?¹ C-C. The geomembrane plastic molecules that are thought to migrate to the salt are the HDPE copolymer and the antioxidant additive Irganox 1330.
Pengaruh Penambahan Gula Aren terhadap Karakteristik Eko-enzim Kulit Buah Nanas (Ananas comosus). Ida Bagus Wiryasuta Yudiantara; Luh Putu Wrasiati; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 10 No 3 (2022): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JRMA.2022.v10.i03.p03

Abstract

Ecoenzyme is a product of fermentation process that can be used as disinfectant, biocompose, and surface cleaner. In general, ecoenzyme production use organic waste, glucose, and water which fermented for 3 months in anaerob environment before harvested. This research intend to determine the effect of brown sugar addition on characteristics of ecoenzyme from pineapple peels. This research using completely randomized design with single factor. The factor in this research is addition of brown sugar in different ratio. Brown sugar addition of pineapple peels consist of 6 level which are 0:6 ratio; 1:6 ratio; 2:6 ratio; 3:6 ratio; 4:6 ratio; and 5:6 ratio of brown sugar. Variables observed in this research are alcohol contain, pH, and total dissolve solid. The result of this observation indicate that brown sugar addition affected alcohol contain, acidity, and total dissolve solid of ecoenzyme from pineapple peels. Ecoenzyme has higest alcohol contain on day 8 and decresed on day 10. Addition of 5:6 brown sugar ratio was the best treatment with 8,25±0,22% (v/v) alcohol contain, 3,98± 0,11 pH, and 7,87± 1,03 total dissolve solid value.
Pengaruh Perbandingan Maltodekstrin-Karagenan dan Konsentrasi Enkapsulan Terhadap Karakteristik Enkapsulat Ekstrak Pewarna Daun Singkong MADE AYU DHAVA VAGISVARI GIRI PUTRI; Ni Made Wartini; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 10 No 3 (2022): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JRMA.2022.v10.i03.p08

Abstract

Cassava leaves are a by-product of cassava processing with fresh leaf production reached 10 – 40 tons/ha/year. Cassava leaves have a green pigment (chlorophyll) which can be used as a potentional natural dye. This study was conducted to determine the effect of maltodextrin-carrageenan comparison and encapsulant concentration on the encapsulate characteristics of cassava leaf dye, as well as determine the best treatment to produce cassava leaf dye encapsulate. Encapculation was carried out with the ratio of maltodextrin-carrageenan (95%:5%, 90%:10% and 85%:15%) with encapsulant concentrations (5 and 10%). The results showed that maltodextrin-carrageenan ratio and encapsulant concentration had an effect, but did not interact. Based on the test, the effectiveness index to produce the best treatment is a maltodextrin-carrageenan ratio of 90%:10% with an encapsulant concentration of 5%. With characteristics of amendment, moisture content, solubility, brightness level (L*), redness level (a*), yellowness level (b*), total chlorophyll, chlorophyll a, chlorophyll b and encapsulation efficiency respectively of 97.9 ± 1.60%, 6.31 ± 1.41%, 75.57 ± 1.32%, 34.3 ± 2.01, 2.3 ± 0.22, 18.7 ± 0.84, 11.17 ± 0.10 ppm, 3.43 ± 0.04 ppm, 7.74 ± 0.13 ppm and 73.8 ± 0.65%.
Co-Authors A.A.S. A. Sukmaningsih Aditya Nandika A.J Amirrulloh, Muchammad Rizqi Amna Hartiati Anak Agung Made Dewi Anggreni Anak Agung Sagung Inten Mahasari Putri Arnita Adriani Purba Bambang Admadi Bambang Admadi H Bambang Admadi Harjosuwono Bambang Admadi Harsojuwono Bangkit Dwi Satryo Desi Lusiani Pasaribu Dewi Sartika Dimas Anggi Ananta Dwi Setyaningsih G. W. Wirayuda G.P. Ganda Putra Gede Gora Adrista Gusti Ayu Gayatri Amasdenia Sukarno I Gusti Agung Ayu Mirah Pradnya Dewi I Gusti Agung Ayu Utami Andari I Gusti Putu Ganda Putra I Kadek Punia Atmaja I Ketut Satriawan I Komang Putra Adnyana I Komang Rai Wisnawa Putra I Made Adi Parimartha I Made Ari Kharismananda Jagatkirana I Made Arif Sukmawan I Made Mahaputra Wijaya I Made Mahaputra Wijaya I Made Mahaputra Wijaya i made mateo nautillus I Made Sugiastawa I Made Topan Wira Aristya I W.G. SEDANA YOGA I Wayan Angga Sukma I Wayan Rai Widarta I. Setyawati Ida Ayu Adi Ida Ayu Gede Satwika Candra Praba Sari Ida Ayu Sinta Citra Pertiwi Ida Bagus Ananta Wibawa Ida Bagus Wayan Gunam Ida Bagus Wiryasuta Yudiantara Intan Tiar Malau K.G. Govardhana Sutha Karina Novita Dewi Lilis Banne Paseru Luh Putu Wrasiati Lutfi Suhendra MADE AYU DHAVA VAGISVARI GIRI PUTRI MADE PHARMAWATI Made Puspa Aridona Manika Santhi Marchela Milenia Rindany Monica Rusiyantoro Muhammad Iqbal N.L. Yulianti Ni Made Heni Epriyanti Ni Made Wartini Ni Made Wartini Ni Putu Mega Triasswari Ni Wayan Anik Satria Dewi Ni Wayan Anita Ni Wayan Nadia Martaningsih Sutarsa Ninik Indah Purwati Nur Azizah Diniari Nur Richana NYOMAN SEMADI ANTARA Pranayasa, Wayan Angga Pupung Ferdiansyah Putra, Ferdi Prayoga Rian Hakim Richard Howard Patty Sadyasmara, Cokorda Anom Bayu Sri Mulyani Sri Mulyani Tuti Herlina Br.Naibaho