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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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PENGARUH PENAMBAHAN INOKULUM Saccharomyces cerevisiae DAN LAMA FERMENTASI TERHADAP KARAKTERISTIK CUKA FERMENTASI DARI CAIRAN PULPA HASIL SAMPING FERMENTASI BIJI KAKAO (Theobrama cacao L.) Anak Agung Sagung Inten Mahasari Putri; G.P. Ganda Putra; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 4 No 3 (2016): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

This aims to this study was to (1) determine the effect of addition inoculum Saccharomyces cerevisiae and fermentation period on the characteristics of vinegar fermentation from liquid waste of cacao beans fermentation, and (2) to determine the accurate of addition innoculum Saccharomyces cerevisiae and fermentation period which one produces the best characteristic fermentation from liquid waste of cacao beans fermentation. The experiments was designed by a Split Plot design with the addition of inoculum Saccharomyces cerevisiae (S) into the main plot consisting of 3 plots 10%, 15%, and 20% (v/v). Fermentation period (H) is a subplots consisting of 6 levels were 0, 5, 10, 15, 20, 25 days. The fermentation period was affected significantly (P <0,01) on levels of acetic acid, total acid, alcohol content, total sugar and total dissolved solids from a liquid pulp vinegar fermentation from liquid waste of cacao beans fermentation, while the addition of inoculum Saccharomyces cerevisiaeand interaction did not affect (P> 0,05). The best characteristics of fermentation vinegar was found on the addition of an inoculum of 10% and fermentation period for 25 days with the, acetic acid content, total of acid, alcohol content, total sugar and total of soluble solid were 2,86 (% v/v), 1,16 meq NaOH / g, 0,00%, 1,29%, dan 6,02 oBrix, respectively. Keyword : vinegar fermentation, cacao, watery sweating, fermentation period, additional of inoculum.
OPTIMASI SALINITAS DAN pH AWAL MEDIA BG-11 TERHADAP KONSENTRASI BIOMASSA Tetraselmis chuii Ida Ayu Adi; A.A.Made Dewi Anggreni; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 3 No 4 (2015): Desember
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

The aim of this study was to determine the optimum points of salinity and pH on BG-11 medium to produce maximum yields of biomass of marine microalgae Tetraselmis chuii. The optimization was performed using Response Surface Methodology (RSM), and Central Composite Design (CCD) was used to study the effects of the optimum salinity and pH on biomass of Tetraselmis chuii. The results showed that the optimum points of initial salinity and pH on BG-11 medium to produce maximum yields of biomass of 2.42 x 10 6 cell/mL were 42.06‰ and 8.23, respectively. The optimization obtained a regression model of Z = -1.039 + 0.045X – 0.0004X 2 + 0.614Y – 0.034 Y 2 – 0.001XY + 0, with coefficient determination of 0.97005. The validation using T test showed there were no difference between the actual and regression model based score, with p score of 0.14 for biomass concentration of marine microalgae Tetraselmis chuii. Keywords: BG-11, biomass, pH, salinity, Tetraselmis chuii.
PENGARUH LAMA FERMENTASI ALAMI SECARA AEROB CAIRAN PULPA HASIL SAMPING FERMENTASI BIJI KAKAO TERHADAP KARAKTERISTIK CUKA FERMENTASI Made Puspa Aridona; Ni Made Wartini; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 3 No 3 (2015): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

Watery sweating is the liquid produce during process of cocoa fermentation. The liquid contains alcohol that it could be a substrat to produce higher acetic acid. In this research, the natural aerobic fermentation was carried out to produce cocoa vinegar. The oxygen supply was done by process of aeration using aerator. The aim of the research were to determine the influence of fermentation time on the characteristics of cocoa vinegar and to find out the fermentation time for producing cocoa vinegar with the best characteristics. The experiment was designed by simple Randomized Block Design. The treatment of fermentation time that experimented consists of 11 levels, namely 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 days. The result showed that the natural aerobic fermentation time influenced the content of acetic acid, pH, and total soluble solid of cocoa vinegar. The best characteristics of cocoa vinegar was produce after 6 days fermentation. Acetic acid content of the cocoa vinegar was 2,30% with the vinegar pH and total soluble solid was 3,27 and 5,0 %brix, respectively.
OPTIMIZATION SALINITY AND INITIAL pH ON THE BIOMASS PRODUCTION OF Nannochloropsis sp. K-4 I Made Arif Sukmawan; Nyoman Semadi Antara; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 2 No 1 (2014): Maret
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

This research intended to determine the optimum salinity and initial pH on the growth of Nannochloropsis sp. K-4. The optimization was performed using response surface method (RSM), and central composite design was used to study the effect of salinity and initial pH on the growth of Nannochloropsis sp. K-4. The result showed that the salinity and pH medium of 30.96 ‰ and 8.13 was the optimal condition to grow Nannochloropsis sp. K-4 with biomass yield of 0.41 g/l after 10 days cultivation. Biomass production of Nannochloropsis sp. K-4 was carried out at optimal salinity and initial pH to determine proximate content of the biomass. Proximate analysis of biomass showed that the content of protein, fat, and carbohydrate were 35.55%, 33.66%, and 21.19%, respectively. Keywords: salinity, pH, Nannochloropsis sp. K-4
PENGARUH CAMPURAN BAHAN KOMPOSIT DAN KONSENTRASI GLISEROL TERHADAP KARAKTERISTIK BIOPLASTIK DARI PATI KULIT SINGKONG DAN KITOSAN I Gusti Agung Ayu Mirah Pradnya Dewi; Bambang Admadi H; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 3 No 3 (2015): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

This study aims to 1) determine the effect of material composite and glycerol concentration towards bioplastic characteristics 2) determine the mixture of composite and glycerol concentrations to produce the best characteristics of bioplastic composite. This research used a factorial randomized block design with 2 factors. First factor was the mixture of cassava starch skin and chitosan (starch: chitosan) which was consisted of 3 levels: 3g : 2g ; 3.5g : 1.5g ; 4g : 1g. The second factor was glycerol concentration of 3 levels: 1%, 1.5%, and 2%. Data was analyzed by using ANOVA and continued with Duncan test. The results showed that interaction between treatments very significantly affected the tensile strength and elasticity. The interaction between treatments was significantly affected toward elongation and the ability of biodegradation. The composite mixture of starch : chitosan (4 g: 1 g) and 1.5% glycerol concentration was the best treatment with characteristic of tensile strength 0.39MPa, elongation 44.06%, elasticity 0.008MPa, biodegradability 66.61% and the morphological characteristics is porous, because chitosan fiber larger than starch. Keywords: bioplastics, composites, starch, chitosan, glycerol
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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Abstract

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
Karakteristik Absolut Minyak Atsiri Daun Pandan Wangi (Pandanus amaryllifolius Roxb.) Hasil Proses Re-Ekstraksi Concrete Dengan Etanol Ida Bagus Ananta Wibawa; Ni Made Wartini; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 2 No 2 (2014): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

The purposes of this study were 1) to know the effect of re-extraction of essential oils concrete fragrant pandanus leaves with ethanol at various comparison to the rendement and characteristics of the absolute essential oil fragrant pandanus leaves, 2) determine the ratio of concrete with absolute ethanol produces fragrant pandanus leaf essential oil with the highest rendement and the best characteristics, 3) to know the absolute composition of the essential oil fragrant pandanus leaves produced on the best treatment. This research used a randomized block design, concrete comparison with treatment with ethanol, which consists of 7 levels ; 1:2,1:4, 1:6, 1:8, 1:10, 1:12 and 1:14. There are 3 groups based on the time of implementation. The results showed that the re-extraction using ethanol effect on the rendement and characteristics of the absolute essential oil produced fragrant pandan leaves. Re-extraction using ethanol solvent at 1:8 ratio is the best treatment that produces fragrant pandan leaf essential oil, with rendement of 1.11%, the value of preference for the scent of 6.25 (between like really like) and aroma strength of 2.68 (the most powerful) and composed 17 compounds, 8 compounds have identification which consists of: 21,63% alkanes, alkenes 35,39%, 19,59% ketone and 23,38% not identification
RENCANA BISNIS PENGEMBANGAN USAHA PENGOLAHAN METE (Anancardium occidentalle L) DI SUBAK ABIAN DHARMA SANTI, DESA DATAH - KARANGASEM I Kadek Punia Atmaja; I Ketut Satriawan; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 3 No 3 (2015): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

The purpose of this study is to formulate business development strategy of cashew processing in Subak Abian Dharma Santi, Datah village, Karangasem and determine the feasibility of developing a business plan cashew processing business in terms of aspects of feasibility. This study used a SWOT analysis to formulate strategy and to determine the feasibility of business plan enterprise development cashew processing analysis of market and marketing aspects, technical and technological aspects, management and human resources aspects, and financial aspects with the eligibility criteria such as NPV, IRR, B / CR, and PBP. Business plan enterprise development position in Subak Abian Dharma Santi based matrix position is in quadrant II, which means that in spite of all external threats. Business development of the cashew processing in Subak Abian Dharma Santi has the advantage of resources, and alternative strategies produced are: (1) conducting promotional products processing cashew ready for consumption intensive and efficient, (2) producing cashew ready for consumption with good quality so as to compete in the market. Analysis of the feasibility study financial aspects of the business plan enterprise development, cashew processing in Subak Abian Dharma Santi viable seen from NPV of Rp 83.988.304, IRR of 26,55%, B / CR at 1.24, and PBP 3 year 1 months. Keywords: business plan, strategy, subak abian, cashew
PENGARUH JENIS MEDIA TERHADAP KONSENTRASI BIOMASSA DAN KLOROFIL MIKROALGA Tetraselmis chuii I Komang Rai Wisnawa Putra; Anak Agung Made Dewi Anggreni; I Wayan Arnata
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 3 No 2 (2015): Juni
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Abstract

This study aims were to determine the effect of medium type on biomass of Tetraselmis chuii and to find out the best type of medium for producing biomass of Tetraselmis chuii. This study used a descriptive quantitative method with treatment of medium consisting of 3 medium types, namely Walne, Miquel-Allen (MQ), and Bold Basal Medium (BBM). Observation of cell biomass concentration Tetraselmis chuii was used haemacytometer with 3 replications. The results of this study showed that the medium type had significantly affect on the biomass concentration of Tetraselmis chuii. BBM was the best medium to produce the highest biomass of Tetraselmis chuii with a density 2.2 x 10 6 (cells/ml) on 10 days cultivation
KARAKTERISTIK MUTU DAN RENDEMEN ALGINAT DARI EKSTRAK RUMPUT LAUT Sargassum sp. DENGAN MENGGUNAKAN LARUTAN ASAM ASETAT I Made Topan Wira Aristya; Bambang Admadi; 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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Abstract

This research is aimed to determine the concentration of acetic acid which is appropriate to produce high yield and best alginate quality of Sargassum sp. seaweed. This study uses descriptive quantitative and qualitative design by comparing the best results of the standard alginate exist. The concentrations of acetic acid tested are 0%; 0.5%; 1%; 1.5%; 2%; and 2.5%. Each concentration was repeated 3 times. The variables observed in the alginate include yield, moisture content, ash content, viscosity, pH, and the functional groups by FTIR. The extraction of alginate with a solution of acetic acid concentration by 1.5% is the best in the alginate extraction with 2.90% of yield, 7.37% moisture content, 0.37% ash content, 12cp viscosity, and a 6.0 of pH. In the other side also, the alcohol/phenol (OH) by the wave number of 3626.17 cm-1, alkane group (C-H) by the wave number of 298.88 cm-1, a triple bond (C?N) at wave number of 2376.30 cm-1, carbonyl (C=O) on 1680.00 cm-1 wave numbers, and typical areas fingerprint mannuronat at wave number of 852.54 cm-1 were gained. Keywords: alginate, extraction, Sargassum sp., acetic acid
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