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Ainun Rohana
Program Studi Keteknikan Pertanian Fakultas Pertanian USU
Agriculture, Biological Sciences & Forestry Engineering

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A study of the pulley diameter of mechanical banana slicer Febriyan Fadli; Saipul Bahri Daulay; Ainun Rohana
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 1 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The manufacturing process of agricultural produce into food stuffs is interesting to be known. In fact many of agricultural  crops become more economics after heaving additional process. One of the manufacturing process is slicing. The aim of this research was to test the distance of pulley diameter, conducted in Februari 2012  to March 2012 at the Laboratory of Agricultural Engineering, Faculty of Agriculture, North Sumatera University, Medan, by literature study, experiment, observation, and testing of the equipment. The parameters observed were effective capacity, percentage of material left on the equipment, percentage of material which is not grated. The results of the research showed that the pulley diameter had highly significant effect on capacity, percentage of material which is not grated and percentage of material left on the equipment. The best pulley diameter was 8 inch
Effect of Material Smootheness and Concentration adhesive in Palm Oil solid Waste Briquette Making Riswanti Sigalingging; Ainun Rohana
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 1 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Palm oil mill solid waste resulting from CPO production process is channeled into pond waste (Cooling Fond I). It is usually thrown to the ground so that it can contaminate the environment because it still contains waste oil. This study was aim to utilize the oil palm waste as briquettes. Briquettes is one of the alternative to replace oil. Research was done by completely randomized factorial design with 2 factors i.e : material fineness (20, 30, and 40 mesh) and adhesive  concentration (20, 30, and 40%). Parameters observed were calorific value,  heating time, oil volume, and sootness. The results showed that the material fineness had a highly significant effect on the caloric value, heating time, sootness and had no effect on the volume of oil. Adhesive concentration had a highly significant effect on the calorific value, heating time and had no effect on the volume of oil and sootness. The best treatment combination was K2P1 (thirty mesh material fineness and twenty percent adhesive concentration) with equipment caloric value of 18973,81 kal/gr, 56,57 minute heating time, and 2,25 gr sootness.
The Fabrication of Banana Slicer, supervised Dodi Mowo Asmoro; Saipul Bahri Daulay; Ainun Rohana
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 1 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The manufacturing process of agricultural crops into a foodstuff is an interesting thing to be known. It appeared that many agricultural crops that have been processed further become more economics value than before. One of the fabricated processes is slicing. The aim of this research was to design, build, and test the fabricated banana slicer, conducted in November 2011 to April 2012 at the Laboratory of Agriculture Engineering, Faculty of Agriculture, University of Sumatera Utara, Medan, by literature study, experiment, observation, and testing of the equipment. The parameters observed were effective capacity and percentage of unsliced material. The result of the research showed that the effective capacity of the equipment was 24,25 kg/hr with 16,67% unsliced materials.
Study of Soil Infiltration Rate in Some Type of Lands at Desa Sempajaya Kecamatan Berastagi Kabupaten Karo Rika Isnaini; Sumono Sumono; Ainun Rohana
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Infiltration is a very important component in soil conservation. Because as it coralation with rain intensity, run off, and erosion. The aim of this research was to know  the infiltration rate in some type of lands i.e chili field, coffee field, and bush at Sempajaya Kecamatan Berastagi Kabupaten Karo using Philips equation model. Parameters observed were moisture content, soil texture, bulk density, particle density, porosity, organic matter and cumulative infiltration was used. Double ring infiltrometer that pressed into the soil, and filled with water was used. The decreased of water was observed with interval of  0, 5, 10, 20, 30, 45, 60, 120, 180, 240 minutes. The results showed that the highest infiltration rate was found in bush, followed by chili field, and the smallest was found in coffee field. The biggest influence on the  infiltration rate was organic matter. Key words: Infiltration rate, chili field, coffee field, bush, Sempajaya
Test of Number of Knife Edge on Mechanical Cassava Slicer Dedi R.Pranata Barus; Ainun Rohana; Achwil Putra Munir
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

This research was done to test effect of number of knife edge on the effective  capacity of the equipment,  percentage of material left in the equipment, and percentage of material that was sliced completely. This research was using completely randomized design non factorial. It was found that the effective capacity of the equipment, percentage of material was sliced completely, on one knife edge 45.82 kg hr-1, 3.59%, 3.45%, on two knife edge 49.70 kg hr-1, 4.07%, 4.11%, on three knife edge 68.58 kg hr-1, 10.10%, 4.72%. Respectively the results showed  that number of knife edge had zig, don’t effect on the  effective capacity and  percentage of material left in the equipment, and had no effect on the percentage of material that was sliced completely. Key words : Knife edge, slicer, cassava
Test of Different Mesh Size on The Quality of Coffee Bean in Multifucer Grinder Johanes Panggabean; Ainun Rohana; Adian Rindang; Edi Susanto
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

This research was aimed to test the effect of different mesh sizes on the quality of coffee beans in the multifucer grinder using roasted arabica and robusta coffee beans. The parameters measured were the effective capacity of the equipment, the percentage of material that passed the sieve, coffee powder moisture content, percentage of soluble coffee powder in water and organoleptic tests. The results showed that the best effective capacity was 35.56 kg/hour for the treatment of robusta coffee with 250 mesh sieve, the percentage of material that passed the sieved was 93.33% for Arabica coffee at 150 mesh sieve. The best coffee powder water content was 2.43% for Arabica coffee at treatment with 250 mesh sieve. The best percentage of soluble coffee powder was 33% at 250 mesh sieve. The best aroma was 3.9, which means that the aroma was very typical for treatment of 250 mesh sieve. The best taste was 3.46, which means the taste was typical for Arabica coffee at 250 mesh sieve. The quality of coffee powder produced from the grinding was in compliance with the quality standards of Indonesia. Key words: multifucer, sieve, mesh, robusta coffee, arabica coffee.
Drip Irrigation Efficiency Analysis and Crop Water Requirements of Mustard (Brassica juncea) in The Inceptisol Soil Febrina Torop Simangunsong; Sumono Sumono; Ainun Rohana; Edi Susanto
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Nowadays, the increasing human need for water, is in sharp contrast with the increasingly limited water availability, especially in agriculture so that adversely affect the crop production. Therefore it is necessary to use the availability of water effectively and efficiently by creating an appropriate irrigation technologies and efficient in water as drip irrigation. This study was aimed to analyze the efficiency of drip irrigation and crop water requirements of mustard using inceptisol soil. The measurements were made by direct observation in the field at three growth phases, namely the initial, middle, and late phases. The results showed that the crop water requirements of mustard in the early phase was 2.88 mm.day-1, in the middle phase was 6.58 mm.day-1 and in the late phase of growth was 6.1 mm.day-1. Efficiency consumption produced was very high with average of 100% and storage efficiency was low i.e < 90%. This indicated an imbalance between water usage efficiency and storage, so that the production of mustard plant that produced was not optimal. Key words: efficiency, drip irrigation, inceptisol soil, crop water requirement, mustard
The effect of variety of agricultural comodity during vacuum pump frying Irhami Adha; Ainun Rohana; Saipul Bahri Daulay
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 3 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

It appeared that many agricultural crops that has been processed further become more economics than before. One of the manufacturing process is frying. This research was the effect of variety of agricultural comodity during vacuum pump frying with potato (K1), sweet potato (K2) and taro (K3). This research was conducted at the Laboratory of Agricultural Engineering, Faculty of Agriculture, University of North Sumatra in November until December 2012 by completely randomized design non factorial. Parameters observed were were water content, yield and chips organoleptic test (taste, crunchness, and total acceptance). The results showed that the highest yield was K2 39,509% and the lowest was K1 23,512%, the highest water content was K1 2,715% and the lowest was K2 2,454%, while the highest organoleptic taste was K1 3,600 and the lowest was K2 and K3 3,167, the highest crunchness was K1 3,700 and the lowest was K3 3,500, the highest total acceptance was K1 3,477 and the lowest was K3 3,230. Key words : chips, vacuum frying, potato, swee potato, taro, yield, water content, organoleptic test.
The Use of Serrated Razor Blade in Slicer Remon Purba; Ainun Rohana; Saipul Bahri Daulay
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 3 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

One of fabricated process is slicing. This study was aimed to examine the effect of using a serrated blade on the effective capacity of the tool and the percentage of broken material on the mechanical slicer, conducted in December2012 to January 2013 in the Laboratory of Agricultural Engineering, Faculty of Agriculture, University of North Sumatra, Medan, using non-factorial completely randomized design(CRD). The parameter smeasured were the effective capacity of the tool and the percentage of broken materials. The results showed an effective tool capacity of 47.52kg/hr, 50.5 4kg/hr and73.07kg/hr respectively the percentage of unsliced material of 5.07%, 4.63% and 3.92% respectively. Keywords: blade, processing, slice, capacity.
(Study of Tertiary Irrigation Canals In The Sei Beras Sekata Village Sei Krio Sunggal, Deli Serdang District Sri Amelia Susan Ginting; Sumono Sumono; Ainun Rohana
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 3 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

In the distribution of irrigation water through a soil tertiary canal, there can be a great loss of water, sedimentation and canal scoured if not well designed. This research was aimed to review, to calculate the waterloss and efficiency as well as to designing a good canal dimensions of tertiary canals to prevent scour and sedimentation at 2 tertiary canals in the Sei Beras Sekata village Sei Krio Sunggal, Deli Serdang district. The results showed that sedimentation occurred in both tertiary canals, so that redesign of the dimensions on the both canals was needed. Efficiency at the same distance (30m) in the canal 1 was 79,42 % and canal 2 was 91,72 %. The best tertiary canal dimensions for canal 1 was the combination 0,02% slope, the channel width (B) was 0,62 m and the depth of water (D) was 0,31 m and  for canal 2 was the combination 0,02% slope, the canal width (B) was 0,58 m and the depth of water (D) was 0,29 m. Key Word: Tertiary Canal, Waterloss, Conveyance Efficiency and Canal Dimensions
Co-Authors Achwil Putra Munir Adian Rindang Dedi R.Pranata Barus Dodi Mowo Asmoro Edi Susanto Febrina Torop Simangunsong Febriyan Fadli Irhami Adha Johanes Panggabean Julianto Wijaya Remon Purba Rika Isnaini Riswanti Sigalingging Saipul Bahri Daulay Saipul Bahri Daulay Sri Amelia Susan Ginting Sumono Sumono Zulvi Arwana Fakih