Sriwijaya Journal of Environment
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Antibacterial Activity of Lactic Acid Bacteria Isolated from Cincalok Against Escherichia coli and Listeria monocytogenes
Full text linkThis study aims to determine the antibacterial activity of lactic acid bacteria (LAB) isolates from cincalok, a traditional shrimp fermentation product, against Escherichia coli and Listeria monocytogenes. Five lactic acid bacteria isolates (A1, A2, A3, A4, and A5) were assayed for their antagonistic activity against E. coli and L. monocytogenes. The antagonistic assays were conducted with different incubation times of the LAB isolates before the antagonistic assays. The incubation times were 18, 21, and 24 hours. LAB isolates that showed inhibition zones were further assayed in antibacterial assays. Antibacterial assays were conducted by the disk diffusion method. Antagonistic and antibacterial assays were each carried out in triplicate. The antagonistic assay results showed that only isolates A3 and A4, which were incubated for 24 hours, showed inhibition zones. Inhibition zones of isolate A3 against L. monocytogenes were 1.33 ± 1.04 mm, while against E. coli were 0.67 ± 0.29 mm. Inhibition zones of isolate A4 against L. monocytogenes were 1.33 ± 1.04 mm, while against E. coli were 1 ± 0.5 mm. Antibacterial assay results showed inhibition zones of isolate A3 against L. monocytogenes were 4.67 ± 0.58 mm, while E. coli 6.67 ± 2.08 mm. Inhibition zones of isolate A4 against L. monocytogenes were 3.67 ± 0.58 mm, while E. coli 4.33 ± 0.58 mm. Antibacterial activity of Isolates A3 and A4 had weak inhibition against L. monocytogenes and E. coli. Antibacterial activity depended on the type of target bacteria and was influenced by incubation time and environmental conditions
Analysis of the Determinants of Families at Risk of Stunting in Ogan Komering Ilir and Lahat Regencies
Full text linkThe prevalence of stunting among children under five in South Sumatra Province decreased from 24.8% in 2021 to 20.3% in 2023. Lahat Regency showed the most significant decline, while Ogan Komering Ilir Regency had the highest prevalence of stunting. This study analyzes determinants of stunting risk in families (KRS) in these regencies. Using secondary data from Perwakilan BKKBN Provinsi Sumatera Selatan, we examined families at risk of stunting in Ogan Komering Ilir (96,266 households) and Lahat (70,922 households). Univariate and bivariate analyses revealed significant determinants of stunting risk, including: presence of reproductive-age couples, use of unsafe water sources, inadequate sanitation, families classified as 4T (too young, too old, too many, too close), and non-use of modern contraception. These findings highlight key factors that contribute to the risk of stunting in these regencies
Evaluation of the Utilization of Palm Oil Mill Liquid Waste with the Land Application method at PT. X
No full textPalm oil mill effluent (POME) as one of the largest wastes produced in the crude palm oil (CPO) production process is one of the significant environmental challenges in the palm oil industry. POME contains low pH and also contains organic and highly nutritious materials so that it has the potential to be utilized. The land application method has been proposed as one solution to utilize POME sustainably. This study evaluated the utilization of POME through the land application method at PT. X, with a focus on the palm oil mill liquid waste management system and its effect on surface water quality. The data obtained showed that the PT.X palm oil mill liquid waste management system already succeeded in reducing BOD levels by 64.83%. The results of surface water quality tests in the upstream and downstream water bodies around the activity location also showed that most parameters were still below the quality standards required by the government regulations. However, supervision of the implementation of land application must always be carried out because it also has a risk of water pollution if not managed properly
Effects of Environmental Pollution on Public Health in Dhaka City, Bangladesh
Full text linkDhaka City is the most polluted city in Bangladesh compared to other cities. Rapid urbanization and uncontrolled population growth are creating mismanagement of urban amenities in this city and concurrently generating air, water, land, noise pollution, etc., which affects public health. Therefore, the paper attempts to represent the status of the effects of significant environmental pollution on public health in the study area. The study was mainly based on primary data, although secondary data was used. Four hundred respondents who suffered from health problems caused by environmental pollution were randomly selected and interviewed from jointly ten zones of Dhaka North City Corporation and Dhaka South City Corporation using a semi-structured questionnaire. The study found that the health of 90% of respondents was affected by air pollution, 60% by water pollution, 55% by noise pollution, and only 2% by soil pollution in the study area, considering multiple response criteria. Air, water, and noise pollution had a significant health impact on the respondents, considering all age groups except for soil pollution. The study's outcomes strongly support the need for more analysis to reduce the effects of pollution and provide a safe and healthier environment for the people of Dhaka City
Analysis of the Utilization Level of Port Facilities at Belawan Samudera Port
No full textBelawan Ocean Fishing Port (PPS) is one of the largest fishing ports in North Sumatra. PPS Belawan aims to increase the income of fishing communities through the provision of fishing port facilities and infrastructure. The study aims to analyze the optimization of the level of utilization of basic, functional and supporting facilities at the Belawan Ocean Fishing Port and to determine the condition of these facilities. The latest conditions in the field through field surveys show that there are several facilities whose utilization levels are not optimal and whose conditions are not good, such as the port pool. The study was conducted at PPS Belawan, North Sumatra from December 15, 2024 to January 15, 2025. The method used in this study is the survey method. The data collected in the study are primary data in the form of interviews with several sources whose daily activities are related to port facilities, namely basic facilities, functional facilities, and supporting facilities. The data analysis used is descriptive which explains the condition of the port facilities and the level of utilization of port facilities from several facilities which can be calculated systematically. The results of the research show that the Belawan ocean fishing port facilities whose level of utilization can be calculated are still not optimal, even far from optimal, while the conditions of all the facilities required to be in ocean fishing ports, namely those divided into basic facilities, functional facilities and supporting facilities are in quite good condition, and can support port operations quite well
Identification of Tempeh Wastewater Quality and Analysis of Producer Behavior towards Waste Management in Plaju Ulu
Full text linkThe development of the household-scale tempeh industry in Plaju Ulu has the opportunity to disrupt the balance of environmental ecosystem if it is not balanced with treatment. Efforts to identify the quality of wastewater and the behavior of tempeh producers need to be carried out in order to immediately prevent the impact caused by waste and become basis for determining the right treatment method. This study uses mix methods approach. Quantitative methods were used to the identification of BOD, COD, TSS, and pH. Qualitative method was used to find out the behavior of producers. The results showed that soaking stage produced a pH level of 3,830; TSS 22,350 mg/l; COD 27,214.100 mg/l, and BOD 224 mg/l. Washing stage produce a pH of 4,530; TSS 787,500 mg/l; COD 1187,200 mg/l, and BOD of 7 mg/l. Boiling stage produces pH 5.3; TSS 1165 mg/l; COD 45,332.8 mg/l, and BOD 295 mg/l. Separation stage of soybean produce TSS 117 mg/l; COD 676,320; BOD 400 mg/l and pH level 6.930. Watering stage produce BOD level of 160 mg/l. Tempeh producers have been aware about importance of waste management process to maintain environmental balance, but as many as 81% of producers still dispos
How Robust Is Local Knowledge? The Role of Pranata Mangsa in Rice Production
Full text linkThe Bonokeling indigenous community of Banyumas District is still insisting on continuing its various traditions and local wisdom within various phases of life. One form of local wisdom possessed by the people of Bonokeling is the pranata mangsa, a calendrical system based on the apparent motion of the sun, which is widely used by Javanese farmers to determine planting times for agricultural commodities. This research was conducted in a bid to analyze the application of pranata mangsa and its impact on rice yield. In that respect, this qualitative-quantitative study uses primary data collected from interviews conducted among 50 farmers within the Bonokeling community and secondary data taken from the previous research and publications by related institutions. Data analysis used in the Wilcoxon signed-rank test. The result shows that there is no significant difference in the rice produced between farmers who used pranata mangsa and those who did not. This might probably be explained by increased uncertainty of the seasons due to climate change
Assessing the Characteristic of Bands Combination in Log Ratio Change Detection Using SAR Imagery
Full text linkLog ratio is one of the change detection techniques often used in SAR image-based flood inundation analysis where the differences in characteristics between its polarizations are expected to complement each other and provide optimal predictions. This research aimed to identify the characteristics of the output generated from various potential combinations utilizing log ratio change detection. The study utilized Sentinel-1 GRD IW dual polarization mode before and during the flood event as its main datasource. Briefly, the data processing consists of preprocessing, collocation, and change detection, which were subsequently followed by analysis and evaluation. The analysis results indicated a highly significant difference in characteristics among the four outputs of log ratio change, where the combinations of VH1/VH2 and VV1/VV2 detected much smaller changes compared to the combinations of VV1/VH2 and VH1/VV2. The VV1/VH2 combination acts as a counterpoint to the VH1/VV2 combination, as the changes identified in VV1/VH2 showed a tendency towards positive values, whereas the opposite is true for VH1/VV2. The evaluation results show that the highest frequency of errors in detecting changes sequentially was observed in the combinations of VH1/VV2, VV1/VH2, VV1/VV2, and VH1/VH2
Strategy for Strengthening Women's Entrepreneurship in Efforts to Support Women's Knowledge-Based Food Independence through Banyuasin Regency Cooperative Institutions
Full text linkThis research aims to maximize the potential of women's entrepreneurship through cooperative institutions by supporting food independence, creating a targeted strengthening strategy model that can be adopted and applied not only in cooperative and SME institutions but also to all women entrepreneurs. The research was conducted at the BMT Trans Mekar Sari Mandiri Consumer Cooperative in Mulia Sari Village, Tanjung Lago District. The research involved at least 10% of the total population, namely 100 female entrepreneurial respondents using a sampling technique, namely purposive sampling. The method used in this research is a quantitative method. The data obtained in this research consists of primary and secondary data. Primary data was obtained through direct interviews in the field with sample cooperative members (women entrepreneurs) using a list of questions contained in the form of a questionnaire. Secondary data was obtained from agencies related to this research, namely the Banyuasin Regency Cooperative Service as well as literature such as cooperative RAT reports, books, journals, articles, and previous research. To analyze the data was used SWOT analysis. The results of the research conclude that strategies that can be implemented include maximizing women's abundant resources in cooperatives, carrying out cadres according to standardization, formulating rules for the protection of women in entrepreneurship, making it easier for women entrepreneurs to access capital, and collaborating with various parties supporting the development of women's entrepreneurship
Distribution of Ability Eleocharis dulcis to Adsorb Heavy Metals in Roots, Stems and Leaves
Full text linkHeavy metal pollution, including lead (Pb), zinc (Zn), and copper (Cu) in swamp environments, is increasing and poses a significant threat to ecosystem integrity and human health. This study aims to evaluate the phytoremediation potential of Eleocharis dulcis in accumulating heavy metals in root, stem, and leaf tissues. The experimental method involved growing Eleocharis dulcis for 20 days in media artificially contaminated with Pb, Zn, and Cu metals at concentrations of 5, 10, and 15 ppm. Observations were made on metal accumulation in plant tissues on days 5, 10, 15, and 20. The results showed that concentration and duration of exposure significantly influenced the pattern of metal accumulation. The highest accumulations were recorded in leaf tissue, specifically Pb at 87.527 mg/kg, Zn at 32.93 mg/kg, and Cu at 43.522 mg/kg. These findings indicate that Eleocharis dulcis has selective metal uptake and translocation mechanisms and high tolerance to heavy metal stress, and has the potential to be an effective phytoremediation agent for the rehabilitation of heavy metal-contaminated wetlands and support sustainable environmental management