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JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI

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Published by Universitas Udayana

ISSN : - EISSN : 2503488X DOI : https://doi.org/10.24843/JRMA

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI adalah media publikasi ilmiah yang diterbitkan oleh Program Studi Teknologi Industri Pertanian, Fakultas Teknologi Pertanian-Universitas Udayana, berisikan artikel hasil-hasil penelitian, ulasan (review), opini ilmiah oleh mahasiswa, dosen, praktisi, dan ahli di bidang rekayasa dan manajemen bidang keilmuan Teknologi Industri Pertanian dan keilmuan yang terkait lainnya.

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)

Articles 16 Documents

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Search results for , issue "Vol 8 No 3 (2020): September" : 16 Documents clear

Karakteristik Krim Kunyit Daun Asam (Curcuma domestica Val. - Tamarindus indica L.) pada Perlakuan Konsentrasi Emulsifier dan Waktu Pengadukan Mujahidah .; Sri Mulyani; Lutfi Suhendra
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

This study aimed to know cream of turmeric tamarind leaves on the treatment of concentration emulsifier and stirring time and to determine the concentration emulsifier and stirring time to produce characteristics of cream fulfill requirement of SNI. This study used a randomized block design with two factors. The first factor was the concentration emulsifier which consist of three levels, namely 3, 5 and 7%. The second factor is stirring time which consist of three levels, namely 5, 7.5 and 10 minutes. The data were analyzed by analysis of variance (ANOVA) and continued with the tukey test. The result of the study showed that concentration emulsifier has an effect on the adhesion time, pH, viscocity and spread power. The stirring time has an effect on the adhesion time. Concentration emulsifier 5% and 7% with stirring time 10 minutes were creams that fulfill requirement of SNI. The characteristics cream of concentration emulsifier 5% with stirring time 10 minutes is: homogeneus, separation ratio = 1, adhetion time 48.52 seconds, viscocity 3550 cp, spread power 6.72 cm and pH 6.60. The characteristics cream of concentration emulsifier 7% with stirring time 10 minutes is: homogeneus, separation ratio = 1, adhetion time 28.82 seconds, viscocity 3650 cp, spread power 6.79 cm and pH 6.45. Keywords : Span 80, tween 80, stirring time, turmeric and tamarind leaves.

Cover dan Daftar Isi Vol. 8 No. 3 September 2020 Admin JRMA
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

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Karakteristik Ekstrak Pewarna Alami Bunga Kenop (Gomphrena globosa L.) pada Perlakuan Jenis Pelarut dan Suhu Ekstraksi serta Korelasi antar Variabel Zainul Fikri; Ni Made Wartini; Luh Putu Wrasiati
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Globe amaranth is one of the flowers contain betacyanin that potentially used as natural dye by extracting. This research aimed to find out the characteristics of natural dye extract of globe amaranth on the treatment of solvent types and extraction temperature as well as to determine the correlation between a total of betacyanin with the yield and color intensity of the natural dye extract of globe amaranth. This experiment was designed using two factors. The first factor was solvent types consisting of aquades, ethanol 48 percent, and ethanol 96 percent. The second factor was the extraction temperature consisting of 25, 35, and 45ºC. The data analysis used a bivariate correlation test. The results showed the characteristics of the natural dye extract of globe amaranth on the treatment of the type of solvent and extraction temperature were as follows: yield of 8.65 – 16.13 percent, betacyanin total 30.01 – 185.51 mg / 100g, brightness level (L*) 12.08 – 17.09, redness level (a*) 8.19 – 10.93, and yellowish level (b*) 4.77 – 7.87. A total of betacyanin was positively correlated with yield and the redness level (a*) with correlation coefficient value (r) 0.504 (strong) and 0.986 (very strong) and determination coefficient value (R2) 0.2541 and 0.9719, while a total of betacyanin was negatively correlated with the brightness level (L*) and the yellowish level (b*) with the correlation coefficient value (r) -0.932 (very strong) and -0.907 (very strong) and determination coefficient value (R2) 0.8679 and 0.8226. Keywords: Gomphrena globosa L., betacyanin, extraction, correlation

Analisis Peramalan Permintaan dan Pengendalian Persediaan Bahan Baku Body Scrub Powder di CV. Denara Duta Mandiri Desya Rachmasari Cahyadewi; A.A.P. Agung Suryawan Wiranatha; I Ketut Satriawan
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 analyze the demand forecasting of body scrub powder products in October 2019 and the level of raw material inventory body scrub powder optimal in order to minimize the total cost of inventory in CV. Denara Duta Mandiri. Forecasting analysis using time series model with 3 methods of Moving Averages with 2, 3 and 4 month time period, exponential smoothing method with ? = 0.1, ? = 0.5, ? = 0.9 and Trend Projection. To analyze the value of forecasting accuracy, the method used are Mean Absolute Deviation (MAD) and Mean Squared Error (MSE). The results show that the Trend Projection method is the most effective method that can be used as the basis for determine body scrub powder products demand, with the result of forecasting demand is 562 kg and the value of forecasting accuracy, MAD = 76,97, MSE = 9.760,12. The results of Economic Order Quantity (EOQ) showed that total cost of raw material inventory control body scrub powder at CV. Denara Duta Mandiri by using EOQ smaller than the methods used by the company. CV. Denara Duta Mandiri management should try to apply the EOQ method in terms of supply of raw materials so that the company can better minimize inventory costs. Keywords: demand forecasting, raw material, Economic Order Quantity (EOQ)

Pembuatan dan Pengujian Stabilitas Bubuk Pewarna Alami dari Daun Bayam Merah (Alternanthera amoena Voss.) Niken Ayu Permatasari; Fitri Afifah
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Redleaf amarant (Alternanthera amoena Voss.) is a kind of leaf that used as natural dye because its composition consists anthocyanin which produce red color in low pH condition. The aims of this research was to produce natural dye powder from readleaf amaranth and to test its stabilized during the storage. The experimental design that used Completed Randomized Design (CRD) with two factors were concentration of maltodextrin (15%, 20%, 25%) and the solvent (aquadest, aquadest+HCl 1%, aquadest+ citric acid 5%). The result showed that the best treatment of natural dye powder from redleaf amaranth was found in the addition of maltodextrin concentration of 15% and aquadest+citric acid 5% with resulted in yield of 15,69%, moisture content 4,36%, total anthocyanin 0,587 mg/g substance, 99,00% of solubility, and 0Hue 6,34 (red-purple). The higher concentrations of maltodextrin caused higher yield and solubility that resulted, the lower moisture content and total of anthocyanin, and also paler color that resulted. The testing of the stability of natural dye powder to light, pH, and temperature produces a good stability and a less significant quality reduction until day 10. The longer the storage caused higher moisture content, the lower solubility and total antocyanin, and paler color that resulted. Key words: anthocyanin, maltodextrin, natural dye powder, redleaf amarant

Potensi Ekstrak Cincau Hijau (Premna oblongifolia Merr.) dalam Menstimulasi Pertumbuhan Bakteri Asam Laktat Saluran Pencernaan Friska Ekagia Ginting; Nyoman Semadi Antara; I Made Mahaputra Wijaya
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

The green grass (Premna oblongifolia Merr), is a woody shrub plant mainly found in the forest. The main content of the plant is pectin, so green grass jelly is considered good source of dietary fiber, because the fiber can be fermented properly by digestive microflora (Gallaher, 2000). The fiber contained in green grass extract is believed to stimulate the growth of lactic acid bacteria in the digestive tract. The purpose of this study was to determine the potential of green grass jelly extract in stimulating the growth of digestive bacteria. The research was carried out in a laboratory with the treatment of adding concentrations of green grass jelly extract powder, and glucose as a control. The media used was Yeast-Pepton which added 1% glucose, green cincau extract powder 0.1%, 0.2%, 0.3%, 0.4%, 0.5%. Fermentation was carried out at 37 ° C with 18 hours fermentation time. The results showed that the concentration of the green grass extract 0.2% gave the best total lactic acid bacteria, this could because at this concentration the media had not increased the viscosity which inhibited bacterial growth. Keywords : green gras, pdigestive lactic acid bacteria, ectin.

Pengaruh Persentase Penambahan Bubuk Serat Oyong (Luffa acutangula) dan Lama Pengadukan terhadap Karakteristik Krim Body Scrub Kadek Mei Ahadianti; Luh Putu Wrasiati; Gusti Putu Ganda Putra
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Body scrub cream is a semi-solid dosage form containing one or more dissolved or dispersed medicinal ingredients in suitable base ingredients and serves to smooth the body's skin and remove damaged skin cells with the help of scrub material. Oyong fiber (Luffa acutangula) is used as a scrubber material that is natural, biodegradable and inexpensive. The aim of this study to know the effect of the addition of oyong fiber powder and stirring time to the characteristics of body scrub cream and to determine the percentage of the addition of oyong fiber powder and length of stirring to produce the best body scrub cream. This research uses factorial randomized block design with two factors. The first factor is the percentage of the addition of the Oyong fiber powder consisting of 3 levels namely 5, 7, 9 and 11% and the second factor is the stirring time consisting of 10, 15, and 20 minutes. Data were analyzed by analysis of variance and continued by Tukey's test. The results of the study showed that the addition loofah (Luffa acutangula) fiber powder addition and the stirring time very affected the pH, viscosity, spreadability power, adhesion power and overall acceptance of the body scrub cream. The interaction between the addition loofah (Luffa acutangula) fiber powder addition and the stirring time very affected the viscosity and the spreadability power. Addition of 9% of loofah (Luffa acutangula) fiber powder and 20 minutes of the stirring time was the best treatment for body scrub cream with characteristics as follows: pH 4.60, viscosity 37600 cp, homogeny, spreadability power 4.6 cm, adhesion power 9.88 seconds, separation ratio=1 and overall acceptance 5,90 (rather like to like). Keywords : body scrub cream, Luffa acutangula, stirring time

Kajian Terhadap Migrasi Plastik Hasil Induksi Panas pada Beberapa pH dan Jenis Asam Organik Gabriella Mutiara Haseama; I M. Mahaputra Wijaya; Ni Putu Suwariani
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

In Indonesian street food vendor, most of hot acidic food and drinks are served with plastic packaging and plastic cutlery. This research is aimed to study about the presence of plastic’s component migration as a result of heat induction in the presence of various pHs and organic acid, and to identify the types of migrated plastic components through its functional groups. In this research, the samples were 10 plastic packaging and cutlery made from LDPE, HDPE, PP, PE, and PS plastic. Acetic acid, citric acid, and lactic acid and three levels of pH which were pH 4, 5, and 6. Temperatures of 80 and 100 ? were used as representation of food and drinks served warm. Each samples were conditioned in each organic acids solutions with different pH (pH 4, 5, and 6) and thermal treatments were carried out for 1 hour in each temperature. The plastic migrations were detected using UV-Visible spectroscopy, followed by FTIR spectroscopy to identify functional groups of the migrated plastic components, followed by prediction of the migrated compound. The results suggested that plastic component migration were detected in all samples, and using lactic acid pH 4, 5, and 6 an antistatic diethanolamides was ruled plausible released from white plastic glass sample. Keywords : plastic migration, organic acids, pH, spectroscopy, temperature.

Pengaruh Ukuran Partikel dan Lama Maserasi terhadap Karakteristik Ekstrak Virgin Coconut Oil Wortel (Daucus carota L.) sebagai Pewarna Alami Ni Komang Novy Trisna Ardyanti; Lutfi Suhendra; G.P. Ganda Puta
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 8 No 3 (2020): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Carrots are vegetable plants that contain ?-carotene, carotenoids, and vitamin A which can be extracted with organic (non-polar) solvents. Virgin Coconut Oil (VCO) is a non-polar solute suitable for dissolving natural dyes and has a dielectric constant of 2.82 × 10-18, so that VCO can be used as a solvent in carotenoid extraction in carrots. The purpose of this study were to determine the effect of particle size and maceration duration on the characteristics of carrot VCO extract as a natural dye and obtain the best particle size and maceration time to obtain carrot VCO extract as a natural dye. This experiment was designed using a Randomized Block Design with two factors. The first factor is the particle size which consists of 3 levels, namely: P1 (40 mesh), P2 (60 mesh), and P3 (80 mesh). The second factor is maceration time which consists of 3 levels, namely: W1 (4 hours), W2 (6 hours), and W3 (8 hours). Data were analyzed by analysis of variance and continued with Tukey test. The results showed that particle size and maceration time a very significant effect on yield, total carotenoids, total ?-carotene levels, brightness level (L*), redness level (a*) and yellowish level (b*). Treatment particle size 80 mesh and maceration duration of 6 hours was the best treatment to extract carrot VCO with yield characteristics of 0.77 percent, total carotenoids 2425.9 (mg/L), total ?-carotene levels 123.39 (mg/L), brightness level (L *) 34.77, redness level (a *) 14.67, and yellowish level (b *) 25.84. Keywords : VCO, carrot, extraction, particle size, time maceration.

Optimasi Suhu dan Lama Pengeringan pada Pembuatan Komposit Bioplastik Campuran Maizena dan Glukomanan Liza Natasya Pongmassangka; Bambang Admadi Harsojuwono; Sri Mulyani
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 temperature regulation and the appropriate drying time on the manufacture of bioplastic composites of maize and glucomannan mixtures, as well as providing information on science and technology in the field of bioplastics. This experimental design uses the complete random design method. The first factor is the drying temperature of bioplastic composites from a mixture of cornstarch and glucomannan which consists of 3 levels, namely 60 ± 1; 65 ± 1; 70 ± 1 ° C. Factor 2 is the drying time which consists of 3 levels, namely for 16, 17.5 and 19 hours. The variables observed were tensile strength, elongation at break, elasticity, swelling and biodegradation. Data were analyzed for diversity and continued with the Tukey test to find out the difference of design experiment. The results showed that temperature and drying time and their interactions had a very significant effect on tensile strength, elongation, elasticity, and water absorption. but the temperature treatment and interaction have no significant effect on the ability of biodegradation. The interaction between treatments has a very significant effect on elongation, elasticity and water absorption. and has a significant effect on tensile strength. The best biodegradable plastic characteristics were determined by tensile strength test at a temperature of 70 °C with 16 hours drying time which resulted in tensile strength values ??of 2,395MPa. Bioplastics produced in this study did not meet the criteria of mechanical tensile strength, elasticity and thickness development. Keywords: Bioplastics, glycerol, glucomannan and maizena.

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Home Page

OAI Link

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Contact Name I Gusti Ayu Lani Triani

Contact Email lanitriani@unud.ac.id

Phone +628124698714

Journal Mail Official jrma@unud.ac.id

Editorial Address PS. TIP FTP UNUD Kampus Bukit Jimbaran Bali Indonesia

Location Kota denpasar, Bali INDONESIA

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Contact Name
I Gusti Ayu Lani Triani

Contact Email
lanitriani@unud.ac.id

Phone
+628124698714

Journal Mail Official
jrma@unud.ac.id

Editorial Address
PS. TIP FTP UNUD Kampus Bukit Jimbaran Bali Indonesia

Location
Kota denpasar,

Bali

INDONESIA