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Metic: Biodegradable Plastic from Melinjo Starch and Waste Cooking Oil (WCO) as an Alternative Food Packaging
Full text linkThe use of plastic in food packaging and the high amount of plastic waste generated worldwide, including Indonesia, are serious threats to the environment. In addition, synthetic plastics in food packaging can also harm human health. Bioplastic products from natural ingredients and waste materials are developed as an alternative to reduce these risks. The purpose of this study was to determine the effect of the addition of starch concentration from melinjo seeds (Gnetum gnemon L.) with a combination of glycerol from waste cooking oil and chitosan substances from waste fish scales on the physical properties and biodegradability of bioplastics. To make bioplastic samples, the variation of melinjo seed starch concentration used in this study was 5, 10, and 15 grams with additional ingredients of 1 ml of glycerol and 1 gram of chitosan for each sample. Bioplastics were made at 32°C for 72 hours. Bioplastic properties were tested by conducting several tests such as swelling percentage, water and temperature resistance tests, tensile strength tests, elongation tests, and biodegradation tests. Based on this study, plastic with a composition of 5 grams of starch, 1 ml of glycerol, and 1 gram of chitosan produces the best physical characteristics of bioplastics and good reasonable biodegradation rates. Further research is recommended by increasing the concentration of starch, glycerol, and chitosan to produce better-quality bioplastics to be used as an alternative to commercial plastics
Snack Production Planning Strategy using Goal Programming Method
Full text linkUD Surya Snack Banyuwangi is one of the Banyuwangi snack shops that produces several kinds of snacks such as dry sponge cake, Bagiak, sato, sale, and others. Production at the factory is closely related to meeting market demand. Therefore, factories must carry out production planning so that they can produce products in sufficient quantities to meet market demand. Production planning involves making decisions regarding the number of products produced, resource allocation, and setting up the production process to achieve effectiveness and efficiency in the process. The article based on this research aims to obtain optimization values in production planning to meet market demand using the Goal Programming method. Goal Programming is a method that aims to minimize deviations from all goals by adjusting decision variables to achieve conformity with the specified goals. This research was carried out by direct observation at UD Surya Snack which was in direct contact with the factory owner. The data and information used in this research include production volume, production value, profits, production costs, and labor costs in one month. The data was then modeled using the Goal Programming method to determine decision variables, constraint functions, and objective functions and solved with the help of Excel Solver. The results obtained show that the application of Goal Programming in UD. Surya Snack production planning shows optimal values. The total profit earned was IDR 17.078.000 in one month after deducting production costs and labor costs. The deviation values of all constraints that must be minimized in the objective function have been met
Effect of Duck Manure (Anas domesticus) and Compost on the Growth of Kangkong (Ipomoea reptans Poir var. Bangkok LP-1) on Aquaponic Systems
Full text linkKangkung (Ipomoea reptans) menjadi salah satu sayuran yang paling banyak di konsumsi dengan tingkat konsumsi, pada tahun 2020, sebesar 3,784 kg/kapita/tahun. Akan tetapi, ketersediaan kangkung masih belum memenuhi kebutuhan masyarakat dengan data ketersediaan per kapita yaitu sebesar 1,03 kg/kapita/tahun. Oleh karena itu, perlu dilakukan peningkatan produksi kangkung terutama pada daerah urban, salah satunya melalui sistem akuaponik. Tujuan dari penelitian ini adalah untuk mendapatkan informasi mengenai komposisi dan dosis pupuk kandang bebek serta kompos terhadap pertumbuhan tanaman kangkung pada sistem akuaponik. Penelitian menggunakan rancangan eksperimental dengan faktor perbedaan yaitu pemberian pupuk kandang bebek dan kompos dengan komposisi yang berbeda. Terdapat lima perlakuan dengan masing-masing talang diulangi sebanyak 26 tanaman. Masing-masing perlakuan yaitu kontrol (0% pupuk/kompos), pupuk kandang bebek 750 g (50%), pupuk kandang bebek 1,500 g (100%), pupuk kompos 750 g (50%), pupuk kompos 1,500 g (100%). Hasil penelitian menunjukkan bahwa perlakuan pemberian pupuk kompos 100% (1,500 g) menghasilkan pertumbuhan dengan hasil paling optimal terhadap jumlah daun, panjang akar, biomassa basah, dan biomassa kering tanaman kangkung
The Study of Fishing Port Networks to Support Buffer Areas in IKN
No full textEast Kalimantan Province is a region in Indonesia where the mining and quarrying industry is still the main sector that influences the regional economy and Indonesia as a whole. However, local governments hast to make efforts to encourage other economic sectors to avoid a decline in economic growth which is influenced by fluctuations in world market prices. For example, the agricultural sector, including fisheries, is the most important potential commodity in East Kalimantan. The development of fishing ports in the coastal areas of East Kalimantan is very important as a center for local economic activities and also as a place to maintain the sustainability of fish resources. Apart from that, with the progress of the development of the New Capital City of Indonesia (IKN) in the Balikpapan and North Penajam Paser areas, it is important to review the function of the port as supporting water transportation connectivity in the IKN
Lauryl Hydroxysultaine as a Low Dose Foam Enhancing Booster
No full textThe growth of Indonesia's cosmetics industry reached 21.9%, with 913 companies in 2022 and 1,010 companies by mid-2023. Among the total products from local cosmetic companies, the largest market segment is personal care. Shampoo and bodywash are the two main categories of personal care cleansing products. Foam is an important indicator of product quality; however, technically, foam does not always correlate with the cleaning strength of a product. Nevertheless, consumers expect shampoos and body washes to lather easily and produce abundant foam. The foaming ability of a product is influenced by several factors, one of which is the addition of foam boosters. Cocamidopropyl betaine (CAPB) is the most used foam booster and is produced on a large scale. Another foam booster is lauryl hydroxysultaine (LHS) which has better foam-producing ability than CAPB. This study aims to determine the right formulation of LHS addition in shampoo and bodywash thus it meets the specified requirements. Shampoo and bodywash were prepared with several formulations, the samples were then tested for their viscosity, foam quality, and irritation potential. The results showed that LHS performed better than CAPB for the three parameters above. It was obtained that a dose of 2% LHS gave a better effect than 3% CAPB. It is, therefore, quite profitable from an economic and environmental perspective
Phytoplankton and Water Environment Conditions in the Noe Meto River
No full textThis research aims to determine the structure of the phytoplankton community and the values of chemical and physical water parameters in the Noe Meto river. This research was carried out using purposive sampling by paying attention to sampling stations in places used by local people to wash clothes or motorbikes. A total of 3 research stations had water samples taken to analyze the type of phytoplankton in the laboratory. Meanwhile, environmental factors such as pH and temperature are carried out in situ. The research results showed that the existing phytoplankton community had an abundance value of 6-328 ind/L, a diversity index value of between 1.698-2.200, a uniformity index value of 0.708-0885 and a dominance index value of between 0.128-0.242. All of the phytoplankton species found were from the Bacillariophyceae class. The water temperature values of the Noe Meto River from the three stations range from 29.67oC-31oC and the pH value of the water is 7 or neutral. Based on existing data, it shows that the phytoplankton in the Noe Meto river is experiencing environmental pressure in the moderate category
Analysis of Green Hospital Implementation in the Integrated Emergency Room Building Construction Project of RSUD K.R.M.T Wongsonegoro Semarang Based on Green Construction Site Index
Full text linkConstruction activities have positive and negative impacts, one of the negative impacts is the generation of construction waste. As construction projects develop, waste generation also increases. As an effort to realize the concept of sustainable development in the health sector, the Directorate General of Health Services issued Guidelines for Environmentally Friendly Hospital (Green Hospital) in 2018. However, these guidelines do not contain guidelines for the implementation aspects of building construction. Therefore, the purpose of this study was to identify the factors, criteria, and indicators in the preparation of instruments for assessing aspects of the implementation of Green Hospital construction, and to analyze the results of the assessment. This research is qualitative using descriptive analysis method. The research results obtained 50 factors, 10 criteria and 3 indicators arranged in an assessment instrument called "The Construction Implementation on Eco Green Hospital Development". Analysis of the assessment results on the Phase I Integrated Emergency Room Building Construction Project of the K.R.M.T Wongsonegoro Semarang Hospital shows that the Green Construction Project Policy indicator with 4 factors out of 15 factors has been met, the Environmental Performance Management indicator with 4 factors meets out of 15 factors, and the Construction Waste Management indicator with 9 factors out of 20 factors has been met
Implementation of the Fuzzy Time Series Singh Method for Forecasting Non-Oil and Gas Export Values in Indonesia
Full text linkExport activities drive a country's economic growth by increasing revenue and strengthening trade relations between countries. In Indonesia, non-oil and gas products are the primary contributors of export performance. In 2022, non-oil and gas exports values reached 275.96 million USD, marking an increase of 25.80% compared to the previous year's export value. This growth in export value was influenced by various external factors, leading to substantial changes. The government requires further analysis to forecast future trends in non-oil and gas export values due to the uncertain and fluctuating patterns. The Singh Fuzzy Time Series method, an advancement of FST, utilizes fuzzy sets to forecast volatile economic data, yielding more accurate predictions. This research used the Singh FST method and achieved a low MAPE value of 1.31%, indicating a high level of accuracy. Forecasts for Indonesia's non-oil and gas export value over the next three months are projected to reach USD 22,263.02 million in January 2023, followed by USD 22,217.21 million in February 2023, and USD 22,243.68 million in March 2023. These export value forecasts can aid the government in policy-making related to exports and sustain the stability of the country’s economic growth rate