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All Journal Jurnal Teknologi Industri Pertanian JURNAL PASTI (PENELITIAN DAN APLIKASI SISTEM DAN TEKNIK INDUSTRI) Journal of Appropriate Technology for Community Services INVENTORY : Industrial Vocational E-Journal On Agroindustry REACTOR : Journal of Research On Chemistry And Engineering Andalasian International Journal of Agricultural and Natural Sciences Jurnal Teknologi dan Manajemen Jurnal IPTEK Bagi Masyarakat Journal of Fibers and Polymer Composites Journal of Industrial Community Empowerment
Maria Isfus Senjawati
Politeknik ATI Padang
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation

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Pelatihan Pengolahan Limbah Tongkol Jagung Menjadi Kerupuk Sebagai Peluang Usaha di Kenagarian Aie Tajun Lubuk Alung Senjawati, Maria Isfus; Maryam, Maryam; Alfi, Rizki; Syahmer , Verra
Journal of Industrial Community Empowerment Vol. 1 No. 2 (2022)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v1i2.113

Abstract

This time, corn cob waste has not yet been utilized optimally, while corn cob waste is rich in pentoses and has great potential to be processed into food. There is a business opportunity for the community to process corn cob waste into crackers, in order to generate added value in addition to selling shelled corn. The problem of processing corn cob waste by the community and how to take advantage of this business opportunity can be overcome by providing processing technology and assistance in processing corn cob waste into crackers to the community. Because of this, it is necessary to increase business opportunities by taking advantage of the potential of corn cob waste to become products that can be used as additional products such as processed food products, corn cob crackers through a short training in Nagari Aie Tajun, Lubuk Alung. The evaluation results from this exercise show that the participants are very satisfied and can make this product independently so that they are encouraged to develop this product into a superior product in their hometown.
FEASIBILITY STUDY OF NANOCRYSTALLINE CELLULOSE (NCC) PRODUCTION FROM OIL PALM EMPTY FRUIT BUNCH (OPEFB) FIBER USING BIOPROCESS TECHNOLOGY Maryam; Syahmer, Verra; Senjawati, Maria Isfus; Akli, Khairul; Nadiyah, Khairun
Jurnal Teknologi Industri Pertanian Vol. 34 No. 3 (2024): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2024.34.3.218

Abstract

Oil Palm Empty Fruit Bunch (OPEFB) is biomass by-products from palm oil processing mills. The cellulose content in OPEFB, which reaches 38.70%, presents a potential raw material for various cellulose-based products, such as nanocrystalline cellulose (NCC). NCC can be used as a raw material in various industrial sectors, including paper, packaging, food, pharmaceuticals, cosmetics, and electronics industries. The bioprocess technology for producing nanocrystalline cellulose from OPEFB has been successfully developed and is expected to be applied on an industrial scale. Therefore, an economic feasibility analysis is required to evaluate investment viability and the impact of parameter changes on investment using sensitivity analysis for the production of nanocrystalline cellulose from OPEFB with bioprocess technology. Based on the data processing of investment feasibility analysis with assumptions of cost data and other parameters using Internal Rate of Return (IRR), Net Present Value (NPV), and Payback Period (PP), it was found that the industry is feasible and profitable with an IRR of 113.99%, NPV of $763,804,208.84, and a Payback Period of 1 year. Additionally, using sensitivity analysis, it was determined that to maintain investment viability, the raw material price can only increase by a maximum of 35%, the product selling price can only decrease by a maximum of 15%, and production costs can only increase by a maximum of 20%. This research is expected to provide information to stakeholders such as investors, government, and industry regarding the opportunities for developing nanocrystalline cellulose production from OPEFB in Indonesia. Keywords: nanocrystalline cellulose, techno-economic study, oil palm empty fruit bunch, bioprocess technology
Pengaruh Faktor Psikologis dan Regulasi Terhadap Perilaku Konsumsi Energi Listrik Sektor Rumah Tangga Berdasarkan Usia Senjawati, Maria Isfus; Susanti, Lusi; Zadry, Hilma Raimona; Putri, Gustiarini Rika
INVENTORY: Industrial Vocational E-Journal On Agroindustry Vol. 1 No. 2 (2020)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/inventory.v1i2.23

Abstract

The increase in household electrical energy causes shrinkage of energy so that efforts are needed to conserve energy, especially electrical energy. One attempt to reducing the scarcity of electrical energy is by changing behavior. Changes in the behavior of electricity consumption can be influenced by psychological factors (norms, awareness, etc.), demographic factors (age, gender, income, etc.), and other factors such as regulations or policies from the government to conserve energy. This study seeks to determine the effect of psychological and regulatory factors on the behavior of household electricity consumption based on age. The method used was to conduct a survey by distributing questionnaires, the respondents obtained were 808 respondents. The results of the questionnaire were processed using the Structural Equation Model Partial Least Square (SEM-PLS) using the Smart-PLS software. The results of this study indicate that psychological and regulatory factors can explain their effect on the behavior of electrical energy consumption for ages <30 years of 50.9%. For 30-50 years old it is 49.5% while those> 50 years old are 59.3% and the rest is explained by other factors / variables outside those that have been studied so that it can be concluded that psychological factors and regulatory factors have a significant and significant influence. positive behavior towards household electrical energy consumption at all ages. it is expected that the results of this study can become the basis for making stronger regulations or policies in the field of energy conservation.
Analisis Penyebab Cacat Produk Santan Kemasan dalam Penetapan Critical Control Point dengan Pendekatan HACCP di PT. X Putri, Gustiarini Rika; Senjawati, Maria Isfus; Erlinanto, Yovi
INVENTORY: Industrial Vocational E-Journal On Agroindustry Vol. 1 No. 2 (2020)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/inventory.v1i2.25

Abstract

Hazard Analysis Critical Control Point (HACCP) ia a quality control system from the preparation of raw maerials to the product and accepted by consumers. HACCP is a requirement for guaranteeing the safety of food products produced according to company quality standards. PT. X produces packaged coconut milk as one of the main products and has implemented HACCP in every production process of its products. The packaged coconut milk that is produced often gets bloated in the finished product warehouse before the product is distributed. Therefore it is necessary to analyze the application of HACCP in the production of packaged coconut milk. HACCP application in the packaged coconut milk production process has set 4 Critical control points. CCP 1 (UHT Sterilization System & Aseptic Tank), CCP 2 (Filtration 500 micron), CCP 3 (Product Sterilization at 140-148ºC) and CCP 4 (Filling with Astepo Filler Filling Machine). Each Critical Control Point has physical and biological hazards, which must be controlled to ensure food safety. The research objective was to analyze the implementation of HACCP plan for coconut milk products based on SNI No. 01-4852-1998 regarding the HACCP system and analyzing the causes of product defects (bloating) in the determination of the CCP. Based on the analysis of HACCP application and the causes of product defects in packaged coconut milk, product defects due to bloating are not defects in the production process but defects caused by cross-contamination of microbes after filling. Cross contamination occurs due to cracks in the neck of the aseptic bag cup that cannot be detected directly, and the use of tools that should not be used during the filling process.
Pengaruh Pemasangan Fine Bubble Diffuser terhadap Nilai COD dan BOD Limbah Cair Palm Oil Mill Effluent Akli, Khairul; Yolanda , Yolanda; Akbar, Addin; Senjawati, Maria Isfus
REACTOR: Journal of Research on Chemistry and Engineering Vol. 3 No. 1 (2022)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v3i1.55

Abstract

The rapid development of the palm oil industry, which cannot be denied, has an impact on the amount of industrial waste, particularly wastewater, requiring proper and effective treatment to reduce the impact of the damage. Wastewater treatment of Palm Oil Mill Effluent (POME) in an aerobic pond requires an adequate supply of oxygen so that its quality improves and becomes disposable, so it requires assistance from aeration media. A fine bubble diffuser was used as the aeration medium in this study. The aeration medium in this study was a fine bubble diffuser. The purpose of this research is to investigate the impact of installing a diffuser on the quality of the final wastewater, particularly the COD and BOD values, in the palm oil industry wastewater treatment. The analysis results for the wastewater parameters after the installation of the fine bubble diffuser revealed a significant reduction in the waste's COD and BOD values to 130 – 175 mg/L and 67 – 78 mg/L, respectively, making it more suitable for disposal to the environment.
Application of Nano Crystalline Cellulose (NCC) From Oil Palm Empty Fruit Bunch as Reinforcement of Bioplastic Nanocomposite With Polivynil Alcohol (PVA) Matrix Maryam Maryam; Maria Isfus Senjawati; Khairul Akli
Andalasian International Journal of Agriculture and Natural Sciences (AIJANS) Vol. 2 No. 01 (2021)
Publisher : Lembaga Penelitian dan Pengabdian, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.481 KB) | DOI: 10.25077/aijans.v2.i01.38-49.2021

Abstract

Integrated Work Mapping to Optimize Small-Scale Tofu Production : Evidence from Padang, West Sumatra Nadiyah, Khairun; Senjawati, Maria Isfus; Hidayat, Muhammad Syarif; Jaeba, Kushisa Atta
Jurnal IPTEK Bagi Masyarakat Vol 5 No 3 (2026)
Publisher : Ali Institute of Research and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/j-ibm.v5i3.1597

Abstract

This study aims to identify inefficiencies in the tofu production process in small-scale tofu industries in Padang City, West Sumatra, and to propose improvements through an integrated work mapping approach. The analysis employs five types of work mapping tools, namely the operation process chart, flow process chart, layout flow diagram, man–machine chart, and right-hand–left-hand chart. The research method used is a qualitative case study conducted through direct observation, production cycle time measurements, and semi-structured interviews with the owner and workers. The results show that the total production cycle requires approximately 390 minutes, with the soaking stage (120 minutes) and molding stage (60 minutes) being the most time-consuming processes. The flow process chart identifies seven transportation activities with a total time of 16 minutes. Meanwhile, the man–machine chart reveals an imbalance in resource utilization, where the grinding machine operates for 33.1 minutes while the operator is active for only 3.1 minutes, resulting in 30 minutes of idle time. The right-hand–left-hand chart also indicates the dominance of right-hand movements in the cutting process, suggesting ergonomic inefficiency. The novelty of this study lies in the integration of five work mapping tools within a single analytical framework to provide a comprehensive evaluation of process flow, spatial layout, human–machine interaction, and manual motion patterns. The proposed improvements include workflow optimization, task redistribution, ergonomic workstation redesign, and the development of standard operating procedures (SOPs) to enhance efficiency and productivity in small-scale tofu industries.
Co-Authors Addin Akbar Akli, Khairul Alfi, Rizki Apriansah, Friski Arsil, Fikri Cindi Novia Erlinanto, Yovi Fera Afriyuni Fikri Arsil Gustiarini Rika Putri Hilma Raimona Zadry Jaeba, Kushisa Atta Khairul Akli Khairul Akli Khairul Akli Lisa Susanti Lusi Susanti, Lusi Maryam Maryam Maryam Maryam Maryam Maryam, Maryam Muhammad Syarif Hidayat Nadiyah, Khairun Rishelin, Nadya Rizki Alfi Rizki Fadhillah Lubis Rushdan Ahmad Ilyas Syahmer , Verra Syahmer, Verra Tosty Maylangi Sitorus Verra Syahmer Yolanda , Yolanda Yolanda Aprila Yovi Erlinanto Zulhamidi Zulhamidi