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Aunur Rofiq Mulyarto
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Determination of an Optimum Extraction Time and Its Production Cost of Powdered Extract of Guava (Psidii folium) Leaf Sukardi, Sukardi; Mulyarto, A. R.; Safera, W.
Jurnal Teknologi Pertanian Vol 8, No 2 (2007)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

A randomized block design experiment was performed to determine the optimum extraction time and its production cost for producing a extract powder of guava (Psidii folium) leaf. The extraction process was carried out for 5; 10; 15; 20; 25 and 30 minutes respectively. The extract was then dried and the parameters observed were the yield, the levels of tannin, moisture, pH and the production cost.    The results showed that the yield, the characteristics of the powdered extract, as well as the production cost, varied with the extraction time. Based on the regression technique, it was likely that  17.5 minutes was the optimum extraction time. The yield was 2.67 % at 4.42 % moisture and contained 0.3968 g per 5 g (7.936 %) tannin with the pH of 4.32. The production cost was IDR (Indonesian Dollar Rupiah) 875 per 5 g powdered extract.Key word : Extraction time, guava leaf, powdered extract
Utilization of Tamarind (Tamarindus indica) Seed for Coagulation of Tofu Industry Wastewater (Study on Tamarind Seed Powder Concentration and Stirring Time) Nurika, Irnia; Mulyarto, Aunur Rofiq; Afshari, Kunty
Jurnal Teknologi Pertanian Vol 8, No 3 (2007)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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The aim of this research was to evaluate the effectiveness of tamarind seed as a natural coagulant and stirring time in the quality improvement of waste water produced by tofu industries. The levels of tamarind seed flour added were 6 g/L, 10g/L and 14g/L, and the stirring time of 3 min and 5 min respectively. The experiment was carried out in triplicates and assessing the parameters of total soluble solids (TSS), BOD, dissolved oxygen (DO) and the pH.The results showed that the tamarind seed flour was able to reduce the level of parameters studied. The best treatment was obtained from the application of tamarind seed flour at a level of 14 g/L and 3 minutes stirring time. This combination was able to reduce  67.29% of the TSS level (from 425 mg/L to 139 mg/L) and 24.18% of the BOD5 value (from 71 mg/L to 53.83 mg/L) and to increase 53.85% of the DO value (from 1.8 mg/L to 3.90 mg/L) and pH value from 3.93 to 4.57. The BOD5 level of the treated water met the requirement of the quality standard of waste water for the tofu industry, except the TSS, DO and pH values.Keywords: coagulation, natural coagulant, tamarind seed
Consumer Perception on Quality of Bakpao Telo with Importance – Performance Analysis Method Santoso, Imam; Mulyarto, Aunur Rofiq; Maharani, Sukma
Jurnal Teknologi Pertanian Vol 12, No 1 (2011)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Consumer perception on food quality is a key factor for success in food industri development.  Many factors influence consumer perception on food quality. The purpose of this research was to identify the attributes of food product and evaluate it’s performance to find out attributes based on consumer perception. The respondent in this research was the consumer that bought and consumed bakpao telo in Sentra Pengembangan Agribisnis Terpadu (SPAT). The sampling technique used accidental sampling with a number of sample is 75 people, based on linier time function. The analysis of data used Importance–Performance Analysis. The result of this research showed that shape of product, quality of service, advertisement and promotion, and expired date of the product, registered in Departemen Kesehatan, halal guarantee, texture of bakpao, flavor variation of product, flavour of product, guarantee of safety product  and nutrition were the key atributes of bakpao telo quality.Keywords: perception, bakpao telo, importance–performance analysis
Application of Industrial Pollution Projection System Model to Estimate the Pollution Level of Industries in Surabaya Mulyarto, Aunur R.; Wijana, Susinggih; Wati, Iis Trisna
Jurnal Teknologi Pertanian Vol 6, No 1 (2005)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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This research was intended to use IPPS model for estimating industrial pollution load in Surabaya.  Descriptive-analytic method was chosen as the research methodology and consists of two main stages, i.e. classify industries base on the ISIC code and estimate pollution load of each industrial sector based on the number of employments’ variables.  Major data used are the annual industrial activities provided by BPS.  The data includes the name, addresses, main product and number of employees of the industries. The estimation has been carried out on six types of air pollutant, namely levels of SO2, NO2, VOC, CO, TSP, PM10 and two types of water pollutant (TSS and BOD). The result shows that the Chemical Producer N.E.C Industries are main contributor for the pollutant of SO2, NO2, and VOC, while TSP and PM10 are given mostly emitted by Oil and Fat Industries. On the other hand, the Soap, Cleaning Prep, Perfumery and Toilet Prep Industries are the main contributor for CO.  The BOD pollution load comes mainly from Pulp, Paper and Paperboard Industries and the TSS is contributed primarily by Iron and Steel Mills, Foundries, and Re-Rolling Industries.   Key Words: industrial pollution, pollution load
Fuzzy Approach on Horticulture Quality Standard Database Mulyarto, Aunur R.; Sucipto, Sucipto
Jurnal Teknologi Pertanian Vol 9, No 2 (2008)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Horticulture quality characteristics are commonly defined in the uncertainty, vague and ambiguous forms.  These can be a problem in designing database of horticulture quality standard.  This research intended to develop a database system for horticulture quality characteristics that can handle the nature of quality characteristics data using fuzzy approach.  Two main activities that were carried out are fuzzyfication of horticulture quality characteristics and designing database using fuzzy relational model.  The results show that most of local fruits and vegetables have been standardized either in national scope using SNI (Indonesian National Standard) or local scope using market segmentation standard. For fuzzy variable, its fuzzy sets depend on the values of quality prerequisite for each quality grade.  Conceptual design using Fuzzy Relational Database model involves five major entities, i.e. Categories, Comodities, Standard Type, Quality Standard, and Quality Criteria.  To accommodate the fuzzy characteristics, a specific entity which is an extension entity (Fuzzy Set) was added.  The transformation process into relational data model and table normalization produced seven related tables.Keywords: horticulture, quality, database, fuzzy logic
A Design of SMS (Short Massage Service) Based Horticultural Information System for Sub Agribusiness Terminal Mantung, Malang Dewi, Ika Atsari; Sucipto, Sucipto; Mulyarto, Aunur Rofiq
Jurnal Teknologi Pertanian Vol 7, No 2 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objective of this research was to set up the SMS based agricultural commodities information system that run well and provide accurate and speedy information at a reasonably low cost, particularly for horticultural products marketed at Sub Agribusiness Terminal (STA) Mantung Agribis Center in Malang Regency. The Agribusiness information outputs consist of suppliers, sale transactions, buyers, purchasing transactions, and commodities information. The required data were Government, Suppliers, and Buyers. The system users would be Suppliers, buyers, Managers of Agribusiness Terminals, Sub Agribusiness Terminal and main markets, and related government and private bodies. A descriptive-analytical method, so-called the prototyping approach, was chosen. The research was started in two main stages, first, an identification of users’ needs and a development of a system prototype that covered the conceptual design, architecture design, and program implementation (coding). The architecture of the design consisted of data base, process, user interface, and network design. The software employed were Gammu, Firebird 1.5, SMS Demon and Delphi 7.0. The hardware required include the Auto Respond SMS application, a compute set equipped with a GSM modem, and a GSM network. The information in the developed system, however, was not real time since the data was first collected from the sources, then the collected data was input and processed. Therefore, there will be a time delay, depending on the time to execute this sequence. The results indicated that the developed system was able to provide users the relevance information within 15-30 seconds at a cost of not more than regular SMS charge.   Key words: SMS-based horticultural information system
Disain Sistem Basis Data Usaha Kecil dan Menengah (UKM) Agroindustri (Studi Kasus Pada UKM Tempe) Mulyarto, Aunur R.; Purwaningsih, Isti
Jurnal Teknologi Pertanian Vol 5, No 3 (2004)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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The objective of this research is to set up data base system of SME, particularly for tempe agroindustry with emphasizing on conceptual and logical design.  Primary data was collected via deep interview and secondary data from any documents that related to the study research design includes identification and need analysis, conseptual design (build the Entity-Relationship model) and logical design (build the Relational Data Model) Base on the identification and need analysis, there were seven associated actors i.e. SME, cooperation, finance institutions, raw-material supplier, product supplier, local government and consument.  Conceptual model was built using Entity-Relationship Diagram.  There was seven entity sets and seven relation sets with one-to-many cardinality for the whole relationships.  Transformation from Entity-Relationship Model to Relational Data Model produced 14 tables, include:  Perajin, Koperasi, Penyalur, LembKeu, Modal, Produk, BahanBaku, Menjual, Menyalurkan, Menggunakan, Meminjam, Menyediakan, Menghasilkan, and MenjadiAnggota.  Each table had attributes completed with data type and data domain.   Key words : Database, Agroindustry, Conceptual Model, Small and Medium Enterprise
Co-Authors A.A. Ketut Agung Cahyawan W Iis Trisna Wati Ika Atsari Dewi Imam Santoso Irnia Nurika Isti Purwaningsih Kunty Afshari Sukardi Sukardi Sukma Maharani Susinggih Wijana W. Safera