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Ahmad Akromul Huda
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INDONESIA
Protech Biosystems Journal
Published by Universitas Muhammadiyah Mataram
ISSN : 28094425     EISSN : 28094425     DOI : ttps://doi.org/10.31764
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Energy Engineering
Protech Biosystems Journal is a peer-refereed open-access journal which has been established for the dissemination of state-of-the-art knowledge in the field of Agricultural Enginering (Agricultural Mechanization, waters and land resources Engineering, Energy, Bioprocess and Postharvest Technology) and related subjects in this field.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 54 Documents
 1   2   3   4   5 
Physical Quality of Kitchen Lemongrass Powder (Cymbopogon citratus L.) Result of Convection Oven Drying Dian Purbasari; Anisa Dimas Anggraini
Protech Biosystems Journal Vol 2, No 1 (2022): Protech Biosystems Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v2i1.8948

Abstract

Lemongrass is one of the grass plants that can be cultivated inIndonesia. lemongrass has benefits as a food fragrance by processing it directlyinto the dish. The parts of lemongrass that are used as food fragrances are thestems and leaves. The use of lemongrass can be developed if it is processedproperly. One way of processing it is to make lemongrass powder in the so that ithas a longer and practical shelf life. The process used to make lemongrass powderis the drying process using a convection oven. The purpose of this study was todetermine the drying process of lemongrass using a convection oven with the effectof temperature differences and drying duration and to determine the physicalquality of lemongrass powder. The result of this research is that the water contentin lemongrass powder is <12% with the physical quality of the color brightness (L)at a temperature of 60℃ and a drying duration of 22 hours getting the highestvalue of 76.05. The highest value of reddish color (a) is 5.88 at a temperature of80℃ and a duration of 20 hours. The highest value of yellowish color (b) is 16.23at a temperature of 60℃ and a duration of 22 hours. The highest bulk density is0.54 g/cm3 at 70℃ and a duration of 22 hours. The highest water absorptioncapacity is 5.44 ml/g at 60℃ and 18 hours duration. The highest stack angle is40.69˚ at a temperature of 60℃ and a duration of 18 hours.
Application of Electrocoagulation for Wastewater Treatment of Tofu Production Ino Eben Lasroha L.Toruan; Sirajudin Haji Abdullah; Sukmawaty Sukmawaty; Diah Ajeng Setiawati
Protech Biosystems Journal Vol 1, No 1 (2021): Protech Biosystems Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v1i1.6001

Abstract

This study aims to process tofu wastewater by using the electrocoagulation method and determine TSS, TDS, and pH efficiency. The Electrocoagulation system was designed based on an electrocoagulation general standard called batch systems. This study used voltage variations of 10, 20, and 30 volts and exposure time during 60, 120, and 180 minutes. The parameters observed were Total Suspended Solid (TSS), Total Dissolved Solid (TDS), and acidity (pH). This study used fresh tofu wastewater with temperature 40-50oC, with a volume of 2000 ml wastewater in one time of electrocoagulation process. The results showed that the designed electrocoagulation system could reduce TSS concentration until 72.2% and TDS 15.4% and increasing pH approaching the neutral value. However, the concentration value of TSS and TDS  was still above the quality standard. Initial characteristics of tofu wastewater with pH 4.6, TSS 2396.4 mg/L, and TDS 2975.1 mg/L after electrocoagulation process gained pH values 6.5, TSS 1072.7 mg/L, and TDS 2621.6 mg/L.
Characteristics Of Red Dragon Juice (Hylocereus polyrhizus L) with Different CMC Concentrations In Cold Storage Dyah Avidatul Ilma Hadi; Dian Purbasari
Protech Biosystems Journal Vol 3, No 1 (2023): Protech Biosystems Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v3i1.16382

Abstract

Red dragon fruit (Hylocereus polyrhizus L) is a horticultural plant from the Cactaceae family that has a high sweetness level of around 13-15°Brix and a large water content of around 90%. Based on this, further processing is needed so that the nutritional value can be maintained and extend the shelf life. One way that can be done is to process it into fruit juice drinks. Dragon fruit juice is a form of diversification of fresh dragon fruit made into soft drinks through the process of squeezing or crushing the fruit with or without additional food ingredients. The obstacle that occurs during the process of making juice is the appearance of sediment when stored. Therefore, a stabilising agent is needed in the preparation of fruit juice to keep the solid particles evenly dispersed. The purpose of this study was to determine the characteristics of red dragon fruit juice and analyse the effect of CMC concentration and storage duration on the characteristics of red dragon fruit juice. The results of the characteristics of red dragon fruit juice on the observation variable of total soluble solids have a value range of 9.288-11.215 °Brix, pH has a value range of 5.147-5.573, viscosity has a value range of 57.644-91.22cP, stability has a value range of 32.81-50.78%, the level of brightness has a value range of 24.760-28.324, the level of redness has a value range of 9.619-18.394, the level of yellowness has a value range of -1.927-1.560.
Effect of Drying Using Oven on Temperature, Humidity, Moisture Content of Banana Sale Products with Kepok Banana Base Material Nursyafitri, Ike; Sari, Devi Tangga
Protech Biosystems Journal Vol 2, No 2 (2022): Protech Biosystems Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v2i2.12322

Abstract

Banana one of the commodities that are widely cultivated by the people of Indonesia. Banana sale is a food processed by ripe bananas which are thinly combed and then preserved by drying. During the drying of the sale of bananas, the water content decreased in terms of temperature and humidity, so a method is needed that canmaintain the water content of banana sale during drying by applying drying technology using an electric oven. The purpose of this study was to determine the effect of oven drying on the temperature, humidity, moisture content of sale bananas with kepok banana as the basic ingredient. This study used a completely randomized design (CRD), the factor used was temperature treatment. Factorial is repeated three times, parameters analyzed were temperature, humidity and moisture content of banana sale drying. The results showed that drying banana sale with a temperature of 60˚C for 12hours gave the best water content compared to temperatures of 40˚C and 50˚C so that it met the SNI quality for a maximum of 15-20% water content of banana sale.
Performance Analysis Of Vertical Type Mangosteen Skin Pressing Machine Ningsih Ningsih; Suwati Suwati; Rosyid Ridho
Protech Biosystems Journal Vol 1, No 2 (2021): Protech Biosystems Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v1i2.6783

Abstract

This study aims to determine the working mechanism of the vertical type mangosteen peel penepung machine, to determine the production capacity of the results of the performance analysis of the vertical type mangosteen peel penepung machine, to determine the electrical power requirements and to determine the efficiency of the machine the results of the performance analysis of the vertical type mangosteen peel penepung machine. The method used in this research is the Experimental method by conducting experiments in the Agricultural Workshop Lab. The design used is a Completely Randomised Design consisting of 3 treatments using a vertical type mangosteen peel penepung machine with load variations, namely, P1 = 50 grams, P2 = 100 grams, P3 = 150 grams using a 1400 rpm rotation. Each treatment was repeated 3 times so as to get 9 experimental units. The research data were analysed using load variations (Anova table) at the 5% level and if there was a treatment that had a significant effect, further tests were carried out using the Real Differential Test (BNJ) at the 5% real level. The results of the analysis and research show that the working mechanism of the machine uses an electric motor as a driving force, the highest mangosteen skin pressing capacity in P3 is 177.80 grams / second and the lowest in P1 80.82 grams / second, the use of the highest electrical power requirements in P3 0.17 watts and the lowest electrical power usage P1 is 0.09 watts and the efficiency of the machine in P1, P2 and P3 is the same at 53.33%.
Analysis of Corn Productivity Using the Objective Matrix (OMAX) Method (Case Study of PT. Santosa Utama Lestari) Abqory, Muhammad Anis; Tanggasari, Devi
Protech Biosystems Journal Vol 3, No 2 (2023): PROTECH BIOSYSTEM JOURNAL
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v3i2.21103

Abstract

Corn production at PT Santosa Utama Lestari has increased and decreased erratically, several factors can affect corn productivity such as the occurrence of downtime on machines, even in the rainy season sometimes corn production does not reach the production target. Productivity measurement can be done with several methods, one of which is the Objective Matrix (OMAX) method. The purpose of this research is to determine the level of productivity in the production section at PT Santosa Utama Lestari and to provide recommendations for improving productivity in the production section of PT Santosa Utama Lestari. Productivity at PT Santosa Utama Lestari tends to fluctuate. The highest total productivity was achieved in April 2022 with a value of 1000, the lowest total productivity occurred in August 2022 with a value of 25. To improve productivity PT Santosa Utama Lestari needs to improve the quality and availability of raw materials, motivate workers and provide adequate rest time, carry out machine maintenance, and carry out supervision of the use of electricity. The improvement recommendations obtained are that the company needs to increase the amount of raw materials to 4890.01 tonnes, a workforce of 11 people, machine working hours 214.04 hours and 54.32 Kwh of electrical energy.
Implementing Statistical Quality Control of refrigerator lamp cover production lines in a plastic injection molding company (Case Study: CV. ABC) Nuryanti, Shafira Eka; Wulung, R.B. Seno
Protech Biosystems Journal Vol 3, No 1 (2023): Protech Biosystems Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v3i1.15310

Abstract

This research intends to detect the existence of uncontrolled quality control in plastic injection molding companies, with refrigerator lamp cover products. Quality control is conducted using the statistical quality control (SQC) method with tools such as check sheets, histograms, and control charts. Check sheets and histograms were used to make it easier to present the data for further analysis. Furthermore, a control chart was used to detect whether the cacative product was still under statistical control or not. The result of the analysis using the p control chart indicated that there was a production process in an uncontrolled state on the 11th day of the production process. The x-chart and R-chart control charts didn't need to be revised because the production was still within the control limits. Therefore, Cp values = 0.3665<1.33 and Cpk = 0.2819<1.33 indicate that the company’s process capability is not good. Therefore, it is suggested that the company take immediate action to solve the problem. By utilizing this research, the injection molding company can take preventive and corrective action in the early stages.  
Phisycal Quality Analysis of Red Guava (Psidium guajava L.) Using Edible Coating of Carrageenan and Glycerol Dian Karuniasari; Dian Purbasari
Protech Biosystems Journal Vol 2, No 1 (2022): Protech Biosystems Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v2i1.9476

Abstract

Red guava (Psidium guajava L.) is one of the crop commodities inIndonesia. Red guava (Psidium guajava L.) belongs to the climataryric fruit groupthat has high respiration and ripens through an increase in CO2 and ethylene.Climateric fruits have a fairly short shelf life that can accelerate the fruit to bedamaged or decayed. Decay in the red guava fruit (Psidium guajava L.) occurs dueto the rapid respiration process due to poor postharvest handling. Decay on the fruitcan be reduced by applying post-harvest technology, one of which is by coating thesurface skin of the fruit using the edible coating method. Edible coating can bedone using the base material of carrageenan and glycerol. The purpose of this studyis to determine the physical quality of red guava fruit and the effect of ediblecoating from carrageenan and glycerol on red guava fruit. The physical qualities ofthe red guava fruit analyzed were color, shrinkage weight and texture. The resultsshowed the smallest brightness level (L) value of 52.18, the smallest reddish level(a) value of -15.91, the smallest yellowish level (b) value of 35.14, the smallestweight shrinkage value of 28.45% and the smallest texture value of 0.00180 mm /gram.second on the 10th day, namely guava with 1.5% carrageenan treatment and2% glycerol.
Model Arrhennius Untuk Memprediksi Penyimpanan Kelapa Parut Kering Guyup Mahardhian Dwi Putra; Diah Ajeng Setiawati
Protech Biosystems Journal Vol 1, No 1 (2021): Protech Biosystems Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v1i1.5976

Abstract

Dry grated coconut is a processed coconut product that can be directly used by consumers without requiring further processing. In order for dried coconut products to last longer, a good storage process is needed. Storage is intended to maintain the value of the stored commodity. One of the models used for estimating shelf life is the Arrhenius model. Parameters in this study were water content, temperature and humidity. Temperature parameters consisted of three treatments,i.e 30°C, 35°C and 40°C. The results showed a decrease in water content data obtained by using the Arrhenius method at each storage temperature for a temperature of 30°C that is 103.9 days, a temperature of 35°C is 74 days and a temperature of 40oC is 60.5 day.
Physical characteristics of agricultural waste decomposition using different bio-activators Muliatiningsih, Muliatiningsih
Protech Biosystems Journal Vol 3, No 2 (2023): PROTECH BIOSYSTEM JOURNAL
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v3i2.20641

Abstract

This study aims to determine the physical characteristics of agricultural waste decomposed with different bio-activator sources. The method used in the research is an experimental method using a one-factor Completely Randomised Design, namely the source of Bio-Activator with 4 (four) treatments, namely B0: Commercial EM 4, B1: PGPR bamboo, B2: MOL, B3: Coconut water.  Each treatment was repeated 3 times so that 12 experimental units were obtained. The parameters observed included moisture content, biomass weight change, temperature and compost colour. The research was conducted in the Greenhouse of the Faculty of Agriculture, Muhammadiyah Mataram University. The data obtained were statistically analysed using Analysis of Variance at the 5% level. Treatment results that have a significant effect will be continued with the BNJ test at the 5% level. The results showed that the temperature value, the final weight of compost and the percentage difference in compost weight were not significantly different in all treatments.

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