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All Journal Jurnal Teknik Industri IPTEKMA Buletin Udayana Mengabdi JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Itepa : Jurnal Ilmu dan Teknologi Pangan Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) agriTECH Jurnal Ilmiah Teknologi Pertanian Agrotechno CARADDE: Jurnal Pengabdian Kepada Masyarakat Jurnal Sains dan Teknologi Pertanian Agroindustrial Journal Journal of Fibers and Polymer Composites JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI

Bambang Admadi Harsojuwono

Program Studi Teknologi Industri Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Author-ID : 2929405

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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PENGARUH SUHU DAN LAMA PEMANASAN EKSTRAKSI TERHADAP RENDEMEN DAN MUTU ALGINAT DARI RUMPUT LAUT HIJAU Sargassum sp I Wayan Angga Sukma; Bambang Admadi Harsojuwono; I Wayan Arnata.
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 5 No 1 (2017): Maret
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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The purpose of this study was to determine the effect of temperature and heating times of extraction and their interactions to the yield and quality of alginate from seaweed green Sargassum sp, determine the temperature and duration of heating extraction of the right to produce a high yield and the best quality alginate from seaweed green Sargassum sp. This study uses a Randomized Block Design (RBD) factorial treatment comparison of temperature and heating times extraction (60;5, 60;10, 60;15, 70;5, 70;10, 70;15, 80;5,80;10, 80;15, 90;5, 90;10, 90;15) are grouped into 2 treatment so obtained 24 experimental units. The variables measured in this study is the yield, moisture content, ash content, viscosity, pH, and the functional group (FTIR). The results showed that the extraction temperature alginate significant effect on yield and moisture content, duration of heating extraction very significant effect on ash content, temperature and duration of heating extraction and its interactions very significant effect on the viscosity, the functional groups, except for pH. Temperature 80°C and heating times extraction of 15 minutes to produce alginate best with 1,95% yield characteristics, 8,51% moisture content, ash content of 8,92%, viscosity 16 cp, pH 5,50. Alginate extraction results obtained interpretations are hidroxyl functional groups (O-H), group alkanes (C-H), a triple bond (C?N), carboxyl group (-COOH), and a fingerprint region mannuronic. Keywords: Green Seaweed Sargassum sp, Extraction alginate

Upaya Perbaikan Penanganan Anggur (Vitis vinifera L. Var. Alphonso lavallee) dalam Distribusinya dari Petani Desa Kalianget Buleleng ke Denpasar Ni Kadek Sriani; Bambang Admadi Harsojuwono; Cokorda Anom Bayu Sadyasmara
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Efforts to improve are expected to minimize the damage to grapes during the distribution process. The aims of this study were to find out the number channel and the distribution of grape from farmers of Kalianget Village on Buleleng to Denpasar, to determine the handling of grape in distribution and to analysis the impact of postharvest repairs on grape damage from farmers of Kalianget Village on Buleleng to Denpasar with improvement treatment replacement and addition of packaging materials in the form of plastic containers, the addition of PE plastic films and pieces of paper. The method used to determine the distribution lines is the snowball sampling method in the form of surveys and interviews with the Commodity System Assessment Method (CSAM). There are four lines in the distribution, that is line I (Farmer-Middleman-Retailer-Consumer), line II (Farmer-Middleman-Restaurant-Consumer), line III (Farmers-Middleman-Wholesaler-Retailer-Consumer) and line IV (Farmer-Middleman-Wholesaler-Wine Industry-Consumer). Postharvest improvement was carried out on the distribution channel which have the most loss, namely on line I with a percentage of damage of 3.90%. Postharvest handling from the farmer to the retailer includes the process of harvesting, sorting, weighing, packaging, storage, distribution and displaying. The impact of handling postharvest loss of grape on the sorting process at the farm level is 1.81% (non significant), middleman level is 1.13% (non significant), wholesaler level is 2.41% (non significant) and retailer level is 8.36% (significant). Improvement efforts made can reduce the level of loss in grape. Replacement and addition of grape packaging materials in the form of PE plastic film, pieces of paper and the use of plastic container can reduce the percentage of damage which is 7.5%. Keywords : Grape, packaging, postharvest, CSAM, handling improvements

Karakteristik Komposit Bioplastik dalam Variasi Rasio Maizena-Glukomanan dan Jenis Pemlastis I Pt Cahya Wisnawa P; Bambang Admadi Harsojuwono
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 9 No 1 (2021): Maret
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

This study aims to determine the effect of variations in the ratio of cornstarch-glucomannan and types of plasticizer on the characteristics of bioplastic composites to produce the best bioplastic composites. This study uses the two factorial randomized block design. The first factor is the variation in the ratio of cornstarch-glucomannan which consists of three levels, namely 5:1 ; 4,5:1,5 ; 4:2. The second factor is the type of plasticizer, namely glycerol, sorbitol, and propylene glycol. Each treatment was devided into two groups based on the time of making the bioplastic, so that 18 experimental units are obtained. The variables observed were tensile strength, elongation at break, elasticity, swelling, and biodegradation. The data obtained were analyzed for diversity and continued with a test of Significant Honest Difference. The results show that the variation of the cornstarch-glucomannan ratio and the type of plasticizer and their interactions had a very significant effect on tensile strength, elongation at break, and elasticity. The variation in the ratio of cornstarch-glucomannan and the type of plasticizer had a very significant effect, but the interaction had a significant effect on swelling. The best bioplastic characteristics are found in the variations of cornstarch-glucomannan (4:2) with the type of glycerol plasticizer with a tensile strength value of 5.685 MPa, elongation at break of 20,110%, elasticity of 26,735 MPa, swelling of 1.149%, duration of degradation is 6 days. Keywords: bioplastics, cornstarch-glucomannan ratio, glycerol, propylene glycol, sorbitol

Pengaruh Jenis dan Konsentrasi Pemlastis terhadap Karakteristik Komposit Bioplastik Pati Ubi Talas Belitung (Xanthosoma sagittifolium) - Kitosan Runa Ramadanty Aisyi Putri; Amna Hartiati; Bambang Admadi Harsojuwono
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 9 No 3 (2021): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

This study aims to determine the effect of the type and concentration of plasticizers and their interactions on the characteristics of the taro potato starch bio-plastic composite and to determine the type and concentration of the plasticizer that produces the best characteristic of the taro starch bio-plastic composite. This study used a factorial randomized block design. The first factor is the type of plasticizer which consists of 4 levels, namely glycerol, sorbitol, castor oil, and stearic acid. The second factor is the concentration of plasticizers with 4 levels, namely 0.5%; 1%; 1.5%; 2%. Each treatment was grouped into 2 based on the time of making bio-plastics, so there were 32 experimental units. The variables observed were tensile strength, elongation at break, elasticity, thickness expansion, water vapor transmission rate, and biodegradation. The data obtained were analyzed for diversity and continued with the Honest Significant Difference test. The results showed that the type and concentration of plasticizers and their interactions had a very significant effect on tensile strength, elasticity, thickness expansion and water vapor transmission rate. The type of plasticizer and the concentration of the plasticizer have a very significant effect, while the interaction has no significant effect on elongation at break. The type of plasticizer and the concentration of the plasticizer and their interactions have no significant effect on biodegradation. The best characteristics of bio-plastic composites occurred when using stearic acid plasticizer with a concentration of 0.5% with a tensile strength value of 23.00 MPa, elongation at break 2.22%, elasticity 1038.27 MPa, expansion 91.47%, water vapor transmission rate 1.38 g/m2.hour and 7 days of degradation. The bioplastics produced in this study have met the standards of SNI 7818:2014 on the variable tensile strength, elasticity and international standards ASTM 5336 on the variable length of degradation. Key words: taro tuber starch, chitosan, composites bio-plastic, type and concentration of plasticizer.

Pengaruh Konsentrasi Seng Oksida (ZnO) dan Penambahan Gliserol terhadap Karakteristik Bioplastik dari Pati Umbi Gadung (Dioscorea hispida Deenst) Wijaya Saputra; Amna Hartiati; Bambang Admadi Harsojuwono
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 7 No 4 (2019): Desember
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Bioplastics are a type of plastic made from renewable materials such as starch. A study aims to determine the effect of addition zinc oxide (ZnO) and the of glycerol and this interaction to the characteristics of the bioplastik starch dioscorea hispida and determine the addition of zinc oxide (ZnO) and the of glycerol to produce bioplastiks from starch dioscorea hispida with the best characteristics. This study uses factorial randomized block design. The first factor is the addition of zinc oxide (ZnO) which consists of 3 levels, namely 8, 9 and 10% (from 6 grams of starch). The second factor is the addition of glycerol which consists of 3 levels, namely 1; 1.5 and 2 grams. Each treatment is grouped into 2 based on production time, so that 18 units are obtained. The variables observed were tensile strength, elongation at break, elasticity, biodegradation, water absorption, water vapor transmission rate. The data obtained were analyzed for diversity and continued with a test of Significant Honest Difference. The results showed that the addition of zinc oxide and the glycerol have a very significant effect on tensile strength, elongation at break, elasticity, development and transmission of water vapor. While the interaction of the concentration of zinc oxide (ZnO) and the addition of glycerol have a very significant effect on tensile strength and elongation at break and have a significant effect on elasticity and development. The treatment of 10% addition with 1 gram of glycerol is the best characteristic of bioplastic dioscorea hispida denst with a tensile strength value of 1.385 ± 0.007 MPa; elongation 10.2±0.014 %; elasticity 13.995±0.204 MPa; swelling 13.5±0.007 %; Water Vapour Transmition 0.0053±0,013 g/hour.m2; biodegradation ability of 7 days. Keywords: bioplastics, ZnO, glycerol, Dioscorea hispida Deenst.

APLIKASI COMMODITY SYSTEM ASSESSMENT METHOD DALAM DISTRIBUSI JAGUNG (Zea mays) DARI PETANI DI KECAMATAN KLUNGKUNG KE PENGECER Pande Made Kerta Indra Yoga; Bambang Admadi Harsojuwono; I.G.A Lani Triani
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 6 No 1 (2018): Maret
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

The purpose of this research was to determine the number of distribution corn (Zea mays), the type of distribution and postharvest handling of corn, and the impact of postharvest losses and the value of the damage of farmers to retailers Klungkung district. The method used in this research is survey method with the application of the Commodity Systems Assessment Method in the form of questionnaires distributed to farmers, collectors, wholesalers, suppliers and retailers of corn. In the distribution of corn, there are four lines, namely, lanes I farmers retailers, lane II farmers collectors retailers, lane III farmers collectors wholesalers retailers, lines IV farmers collectors wholesalers suppliers supermarkets. Post-harvest handling at the farm level include harvesting, sorting and cleaning, packaging and transportation. Post-harvest handling at the level of collectors, and wholesalers include weighing, sorting, and transporting, postharvest handling at the retail level covering inspection, packaging, and display, postharvest handling at the level of suppliers includes weighing, sorting, packaging and transportation, postharvest handling level includes supermarkets weighing, inspection, and display. Impact on corn postharvest losses at the farm level, namely the harvest reached 7% (significant), at the level of the collectors in the transport process is reached 2.68% (not significant), at the level of big traders when transporting reached 3.8% (not significant), at the retail level in sorting reached 2.38% (not significant), in the sorting supplier level of 11.8% (significant). Keyword : Distribution line, postharvest, corn, CSAM

PENGARUH PERBANDINGAN RUMPUT LAUT SEGAR Ulva lactuca DENGAN LARUTAN ASAM CUKA TERHADAP KARAKTERISTIK BIOPLASTIK ALGINAT I Ketut Pramananta; Bambang Admadi Harsojuwono; Amna Hartiati
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 7 No 3 (2019): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

This study aims to determine the effect of the comparison of Ulva lactuca and vinegar acid on the characteristics of bioplastic alginate and determine the comparison of seaweed with the right vinegar solution so as to produce the best bioplastic alginate characteristics. This study uses a completely randomized design with a comparison treatment of Ulva lactuca seaweed with dissolved sam vinegar. The experiment was carried out with a ratio of 0.5: 2.5, 1.0: 2.0, 1.5: 1.5, 2.0: 1.0, 2.5: 0.5 with the treatment repeated 4 times so that 20 experimental units were obtained. Variables observed were tensile strength, percent extension, Young Modulus, thickness, biodegradation. The results of this study showed that vinegar acid solution had a significant effect on tensile strength, percent extension, Young Modulus, period of biodegradation and thickness of plastic. Comparison of seaweed and vinegar (2.5: 0.5). produce the best bioplastic alginate with characteristics: the percentage of biodegradation loss value 0,49% - 0,51%, increasing thickness period of 218,25 µm, tensile strength 1,86 MPa, Young Modulus 14,55 MPa and bioplastic extension 34,91%. Keyword: bioplastic, Alginate, Ulva lactuca and vinegar acid solution

Pengaruh Konsentrasi Ekstrak Etanol Kunyit dan Daun Asam (Curcuma domestica Val.-Tamarindus indica L.) terhadap Karakteristik Krim Viva Yani Tika Rutmana Simamora; Sri Mulyani; Bambang Admadi Harsojuwono
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

This study aims to determine the effect of the concentration of turmeric and tamarind leaves ethanol extract (Curcuma domestica Val.-Tamarindus indica L.) on the characteristics of the cream and determine the concentration of turmeric and tamarind leaves ethanol extract which the best cream characteristics. The research used Complete Randomized Design. The treatment of the concentration of turmeric and tamarind leaves ethanol extract which consists of 6 levels, 0, 1, 2, 3, 4 and 5%. Each treatment was repeated 3 times, so 18 experimental units were obtained. Variables observed in turmeric and tamarind leaves cream are total phenol, anti-collagenase activity, pH, viscosity, spread-ability, adhesion, and separation ratio. The treatment of the concentration of turmeric and tamarind leaves ethanol extract affected the adhesion, separation ratio, viscosity, spread-ability and anti-collagenase of the cream, but did not affected the pH and total phenol cream. The treatment of turmeric and tamarind leaves ethanol extract 4 (four) percent was the best treatment to produced cream with the following criteria: adhesion = 70.29 seconds, spread-ability = 5.48 cm, separation ratio = 0.94, pH = 5.85, viscosity = 6.433 cp, total phenol = 1.60 mg GAE/mL and the best anti-collagenase (IC50) = 0.89 µg/ml. Keywords: turmeric, tamarind leaves, anti-collagenase activity, characteristics of the cream.

Karakteristik Komposit Bioplastik pada Perlakuan Rasio Campuran Karagenan-Glukomanan dan Suhu Gelatinisasi Timothy Ich Sudanton Sitorus; Bambang Admadi Harsojuwono; Ni Putu Suwariani
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 10 No 1 (2022): Maret
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

This study aims to determine the effect of the carrageenan-glucomannan mixture ratio and gelatinization temperature and their interaction on the characteristics of the carrageenan-glucomannan bioplastic composite and also to determine the carrageenan-glucomannan bioplastic composite on the ratio and gelatinization temperature that produces the best characteristics. This study used a factorial randomized experimental group design. The first factor is the ratio of carrageenan-glucomannan which consists of 6 levels, namely 65:35, 70:30, 75:25, 80:20, 85:15, 60:10 (w/w). The second factor is the gelatinization temperature which consists of 3 levels, namely 70±1, 75±1, 80±1oC. The variables observed in this study were tensile strength, elongation at break, elasticity, thickness expansion, water vapor transmission rate, biodegradation. The resulting data were analyzed for diversity and continued with Duncan's Multiple Comparison test. The results showed that the ratio of the material has a very significant effect on tensile strength, elongation at break, elasticity, and water vapor transmission rate. Gelatinization temperature has a very significant effect on tensile strength, elongation at break, elasticity, thickness expansion, and has a significant effect on the rate of water vapor transmission. The best carrageenan-glucomannan bioplastic composite was obtained at the treatment of carrageenan:glucomannan ratio = 75:25 at a gelatinization temperature of 75±1°C, which only met the standard tensile strength and biodegradation. With a tensile strength of 17,237 MPa, elongation at break 35.2%, elasticity 52.7 MPa, thickness expansion 92.121%, water vapor transmission rate 0.742 g/m2.hour, and biodegradation 6 days Keywords: Bioplastic composite, carrageenan, glucomannan, material ratio, gelatinization temperature

PENGARUH SUHU DAN JENIS ASAM PADA HIDROLISIS PATI UBI TALAS (Colocasia esculenta L. Schott) TERHADAP KARAKTERISTIK GLUKOSA Ni Kadek Ariani Dewi; Amna Hartiati; Bambang Admadi Harsojuwono
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 6 No 4 (2018): Desember
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

The purpose of this reseach was 1) to determine the effect of temperature and acid type on hydrolysis of taro yam starch on the characteristics of glucose, 2) to determine the exact temperature and type of acid in taro starch hydrolysis which produced the best glucose characteristics. This reseach uses Randomized Block Design of factorial pattern.. The first factor is the hydrolysis temperature of taro yam starch at temperatures of 80°C, 90°C and 100°C. The second factor is the acids type of HNO3, H2SO4 and HCl, each with 7% acid concentration. Each treatment is grouped into 2 based on the implementation time. The variables observed were reduction in sugar content, total sugar, dekstrose equivalent (DE), total dissolved solids and clarity. The results showed that the temperature treatment and acid type had a very significant effect (P<0,01) on reducing sugar content, total sugar and hydrolyzed dectrose equivalent (DE) values. Temperature treatment has a significant effect on total dissolved solids and does not significantly affect clarity. The treatment of acid types has significant effect on total dissolved solids and clarity. Temperature treatment and type of acid interact with reducing sugar content, total sugar, and DE values, do not interact with total dissolved solids and clarity. The highest yield was obtained by reducing sugar content of 3,06%, total sugar 5,64% and DE value of 54,24% in HCl at 100°C. The total dissolved solids in H2SO4 and HCl at 100°C were 5,15°Brix and the clarity of HCl at 100°C was 0,02. The best glucose characteristics at HCl was 90°C which was not significantly different from HCl at 100°C. Keywords: sugar, hydrolysis, taro yam, starch, acid, glucose

Co-Authors Aditya Nandika A.J Amna Hartiati Anak Agung Made Dewi Anggreni Anak Agung Made Dewi Anggreni Aryawan, I Komang Budi Mas Boy Darwin Situmorang Cintia Indrawati Devi Hagelia Aritonang Dewa Made Dwi Pradana Putra Dewi Sartika Esmeralda Oktaviani Simarmata Farida Unggul Situmorang Fransiskus Yuven Wara Gusti Ayu Kadek Diah Puspawati Hartiati , Amna I Dewa Gde Mayun Permana I Gusti Ayu Lani Triani I Gusti Made Teddy Pradana I Gusti Ngurah Agung I Kadek Alit Susendiana Adi I Ketut Pramananta I Ketut Satriawan I Ketut Suter I Made Prahadi Widnata Putra I Made Sugitha I Nengah Kencana Putra I Pt Cahya Wisnawa P I W.G. SEDANA YOGA I Wayan Angga Sukma I Wayan Arnata Ida Bagus Wayan Gunam Ketut Anik Mas Juliani Liza Natasya Pongmassangka Luh Gede Arista Pradnyani M. Surya Pramana Mahardika M. SURYA PRAMANA MAHARDIKA, M. SURYA Mulyani Sri N.L. Yulianti Nairfana, Ihlana Natasya Damariandini Ni Kadek Ariani Dewi Ni Kadek Sriani Ni Ketut Wiradnyani Ni Luh Feby Putri Pratami Ni Made Wartini Ni Putu Suwariani Ni Wayan Nadia Martaningsih Sutarsa Noval Wahyu Adi NYOMAN SEMADI ANTARA Pande Made Kerta Indra Yoga Patandianan, Dimas Lomo Pupung Ferdiansyah Purba, Dillon Marichman Putra, Ferdi Prayoga Putu Devi Yustisia Utami Radja Zulfan Hasibuan Runa Ramadanty Aisyi Putri Sando F. Limbong Sayi Hatiningsih Shafira Salsabila Putri Sri Mulyani Sri Mulyani Syah Banu Putra Sitepu Tiara Noviyani Timothy Ich Sudanton Sitorus Viva Yani Tika Rutmana Simamora Vudia Miranda Wijaya Saputra Yohana Putri Lumbantoruan

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