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The use of chemical pesticides in modern agriculture in Indonesia has a negative impact on the environment and health. To address this issue, students from the 24th Community Service Program (KKN) of Raja Ali Haji Maritime University (UMRAH) held a training session on making plant-based pesticides from papaya leaves in Kota Baru Village, Bintan. This activity aimed to provide environmentally friendly and easy-to-apply pest control solutions to local farmer groups. The training involved agricultural extension workers from the Bintan Regency Food Security and Agriculture Office as resource persons. The results of this training are expected to increase farmers' knowledge and skills in utilizing papaya leaves as natural pesticides, reducing the use of chemical pesticides, and realizing more sustainable and environmentally friendly agriculture in Kota Baru Village. Despite obstacles in community participation, this activity succeeded in sparking farmers' interest in applying plant-based pesticides in their crop cultivation.

The research project is titled Production Potential of Bitter Melons (Momordica charantia L.) Using POC Azolla and AB Mix on the Deep Flow Technique (DFT) System was carried out in Bungin, North Makale District, Tana Toraja Regency from May to August 2025. This study aims to determine the economic potential of bitter melon plants by providing AB Mix and POC Azolla nutrients in hydroponic methods and analyze the best influence of these nutrient combinations on the growth and production of bitter melon plants. The research method used was a Group Random Design (RAK) with four treatments, namely 100% AB Mix, AB Mix 80% + POC Azolla 20%, AB Mix 70% + POC Azolla 30%, and AB Mix 60% + POC Azolla 40%. The results of the study showed that P1 treatment (AB Mix 80% + POC Azolla 20%) had the best influence on the vegetative and generative growth of bitter melon plants. This treatment results in a higher average plant height, leaf count, and fruit weight than other treatments. This proves that the combination of Azolla liquid organic fertilizer (POC) with AB Mix is able to provide a balance of nutrients that support photosynthesis, tissue formation, and fruit quality. In addition, the application of the DFT hydroponic system has been proven to increase the efficiency of water and fertilizer use, reduce the risk of soil pest attacks, and produce more hygienic bitter melon products. These findings show that hydroponic cultivation innovation with the use of POC Azolla can be a sustainable solution in supporting food security while being environmentally friendly. Thus, this research makes an important contribution to the development of modern agricultural technology, especially in optimizing the production of vegetables with high economic value.

This study aims to investigate how variations in the soaking time of Luffa cylindrica fibers in alkaline solutions affect the mechanical properties and fire resistance of the resulting composite material. The use of natural fibers is an important step in finding environmentally friendly and sustainable alternatives to replace synthetic materials. Luffa cylindrica fibers were chosen for their advantages, such as being lightweight, strong, and abundantly available. However, natural fibers like luffa contain non-cellulose compounds, such as lignin and hemicellulose, that can hinder strong bonding with the resin matrix. Therefore, pre-treatment with an alkaline solution is necessary to remove these interfering substances. In this study, composites were made using the hand lay-up method with polyester resin as the main matrix. The treatment variable tested was the fiber soaking time in KOH solution, with three variations: 2 hours, 4 hours, and 6 hours. After the composite fabrication, the samples were tested through several standard tests, including tensile tests to measure the material's strength under tension, impact tests to assess toughness, and burn rate tests to evaluate fire resistance. Additionally, macro and micro photo analysis (using SEM if possible) will be conducted to observe fracture characteristics and the quality of the fiber-resin bond. The expected outcome is that longer alkaline soaking will significantly improve tensile strength and toughness. Furthermore, longer soaking is also expected to improve fire resistance by forming a char layer, which acts as a thermal insulator, slowing heat transfer and reducing the rate of pyrolysis.

The need for environmentally friendly marine transportation continues to increase, especially in tourist areas such as Penyengat Island, Tanjungpinang, Riau Islands. In the local context, the design of electric boats has not been widely developed for small islands in Indonesia, even though the potential and urgency for its application is very high. Geographical constraints, limited charging infrastructure, and a lack of technical data are the main obstacles. This research focuses on the design and construction of an electric-powered tourist boat prototype with an asymmetrical catamaran hull type as an effort to support a sustainable transportation system. The boat design applies an asymmetrical catamaran hull configuration to improve sailing stability and energy efficiency. The propulsion system is controlled via a wireless PS2 joystick integrated with an ESP32 microcontroller, supported by a 24V DC motor powered by lithium-ion batteries and solar panels as a supplement. Test results show that the boat can operate stably with remote control, good energy efficiency, and zero emissions during operation. Some technical challenges encountered include limited operational duration due to battery capacity and high sensitivity of electronic components to water exposure. Overall, this prototype has great potential for further development as an environmentally friendly alternative for maritime transportation system. The stable catamaran hull design provides advantages in terms of comfort and safety, especially in calm or shallow waters. The electric propulsion system used has proven to be efficient and responsive, supported by a remote control mechanism that is easy to operate via a wireless joystick

Local food such as chayote (Sechium edule) has great potential as a healthy and environmentally friendly product that can support food security and improve the economic value of local communities. The innovation of processing chayote, particularly into jam, not only helps reduce agricultural waste but also opens up promising new market opportunities. This study applied an experimental design to produce chayote jam with variations in the use of granulated sugar, glucose, and the addition of mint leaves to enhance flavor. The production stages included grating fresh chayote, cooking until the water content was reduced, adding sugar and pectin to achieve a thick and stable texture, and finally packaging the product in sterilized glass jars. An organoleptic test was conducted with 32 panelists to evaluate the color, aroma, taste, texture, and overall acceptability of the product. The results indicated that jam dominated by granulated sugar (Sample A) gained the highest level of preference, with an overall acceptance of 81%. In contrast, jam made with full glucose substitution (Sample C) received the lowest score of 66%. Generally, chayote jam had a natural green color, distinctive aroma, and thick texture that were well accepted by consumers. The main factors determining jam quality were cooking techniques, the balance of thickening agents, and the proper combination of ingredients. Therefore, chayote jam has the potential to become an innovative, healthy, and value-added local food product. Support in the form of training, technology application, and promotional strategies is essential to strengthen its competitiveness, improve farmers’ welfare, and enhance food diversification based on Indonesia’s local resources.

This community service program in Gunung Kijang Village, Bintan Regency, Riau Islands Province, was designed to strengthen local empowerment through the synergy of education, economy, agriculture, and social participation. The activities consisted of four initiatives: workshops on Canva-based learning media for teachers, digital marketing training and social media account creation for MSMEs, participatory mapping of challenges and potentials of local food businesses, and smart farming education using soil moisture sensors to introduce efficient irrigation technology. The results showed significant achievements across sectors. In education, teachers improved their technological skills and created interactive media that enhanced student motivation. In the economic sector, MSMEs adopted digital promotion strategies, leading to wider market reach and sales. The participatory mapping revealed obstacles such as licensing, packaging, and financial literacy, while also identifying opportunities for product diversification using local resources. In agriculture, farmers were introduced to water-saving irrigation technology that improved efficiency and supported environmentally friendly practices. On the social side, community institutions such as PKK, Karang Taruna, and farmer groups played an important role in strengthening solidarity and expanding collaboration. Overall, the program proved that integrating digital literacy, technological innovation, and community participation can accelerate rural independence while fostering sustainable welfare for island communities.  

The Community Service Program (KKN) of Universitas Teuku Umar for the 2025/2026 academic year, conducted in Desa Pasi Janeng, Woyla Timur Subdistrict, West Aceh Regency, focuses on the innovative use of lime (Krut nipeh) as a raw material for the production of environmentally friendly dish soap. This local resource, which has traditionally been used for domestic purposes, has not been fully exploited as a source of economic value. The program follows the POAC methodology (Planning, Organizing, Actuating, Controlling), which encompasses community outreach, soap-making workshops, hands-on production practices, and sustainability evaluations. The outcomes of this initiative include the development of an eco-friendly dish soap product, enhanced technical skills among community members, and active participation from housewives and young mothers. In the medium term, the program has succeeded in raising entrepreneurial awareness within the community, with the expectation that it will foster the establishment of micro, small, and medium enterprises (MSMEs) based on local resources, thus contributing to sustainable development. Furthermore, the program aligns with the achievement of several Sustainable Development Goals (SDGs), particularly Goals 1 (No Poverty), 8 (Decent Work and Economic Growth), and 12 (Responsible Consumption and Production), making a meaningful contribution to community service in accordance with the Tri Dharma of Higher Education.

The Community Service Program (KKN) of Universitas Teuku Umar for the 2025/2026 academic year, conducted in Desa Pasi Janeng, Woyla Timur Subdistrict, West Aceh Regency, focuses on the innovative use of lime (Krut nipeh) as a raw material for the production of environmentally friendly dish soap. This local resource, which has traditionally been used for domestic purposes, has not been fully exploited as a source of economic value. The program follows the POAC methodology (Planning, Organizing, Actuating, Controlling), which encompasses community outreach, soap-making workshops, hands-on production practices, and sustainability evaluations. The outcomes of this initiative include the development of an eco-friendly dish soap product, enhanced technical skills among community members, and active participation from housewives and young mothers. In the medium term, the program has succeeded in raising entrepreneurial awareness within the community, with the expectation that it will foster the establishment of micro, small, and medium enterprises (MSMEs) based on local resources, thus contributing to sustainable development. Furthermore, the program aligns with the achievement of several Sustainable Development Goals (SDGs), particularly Goals 1 (No Poverty), 8 (Decent Work and Economic Growth), and 12 (Responsible Consumption and Production), making a meaningful contribution to community service in accordance with the Tri Dharma of Higher Education.

This research aims to study and offer solutions to the problem of fruit flies that attack citrus plantations in Gadingkulon Village through the Integrated Pest Control (PHT) approach. Fruit fly attacks have caused significant losses to citrus farmers, so an effective and sustainable control strategy is needed. PHT is implemented by integrating mechanical methods in the form of garden sanitation and yellow trap installation, as well as renewable technology approaches to suppress the population and life cycle of fruit flies. This activity is carried out through the stages of socialization, training, and group discussion forums (FGD) which involve the active participation of farmers as subjects as well as agents of change. This participatory approach aims to improve farmers' understanding and skills in implementing PHT techniques independently and consistently. The results of the activity showed that the combination of mechanical and educational methods was able to significantly reduce the intensity of fruit fly attacks. In addition, the benefits of this program can be reviewed from the economic aspect, in the form of increasing crop yields and farmers' income, as well as the ecological aspect, in the form of reducing the use of chemical pesticides that have a negative impact on the environment. Thus, the implementation of PHT in Gadingkulon Village shows great potential to be replicated in other areas that face similar problems, in order to support sustainable and environmentally friendly agricultural development.

Household organic waste production in Thekelan Hamlet has increased along with population density and agricultural activities, potentially having negative impacts on the environment and health. However, this waste actually has the potential to be processed into environmentally friendly products with economic value, one of which is eco-enzymes. This community service activity aims to increase community awareness and skills in processing organic waste into eco-enzymes through a participatory approach, technical training, and live demonstrations. The main partners in this activity are housewives and village environmental cadres, who are the main targets for introducing organic waste processing techniques. During the implementation, participants were trained on the benefits and how to produce eco-enzymes independently. This activity not only provided an understanding of the eco-enzyme production process but also motivated participants to produce eco-enzymes independently at home. The results of this activity showed a significant increase in understanding of the benefits of eco-enzymes as an environmentally friendly product, which can be used as a natural cleaner and organic fertilizer. In addition, participants also began to demonstrate the initiative to produce eco-enzymes independently, which has the potential to reduce household organic waste and increase economic value through the utilization of this product. The findings from this activity demonstrate that community-based waste management can not only be an environmentally friendly solution but also has high economic value. This empowerment model can serve as a sustainable model and be implemented in other areas, providing extensive benefits to the environment and the local economy. Furthermore, this activity introduced the concept of sustainable waste management to the community, providing them not only with new knowledge about organic waste processing but also with the opportunity to apply these techniques in their daily lives.

The agricultural sector plays a strategic role in ensuring national food security, particularly in rural areas where the majority of the population depends on agricultural production. Sememu Village, an agricultural-based community with rice and tobacco as its primary commodities, has faced recurring pest attacks in recent years. Conventional pest control methods in the area have primarily relied on chemical pesticides. However, excessive and prolonged use of these chemicals has resulted in serious problems, including pest resistance, environmental contamination, and potential health risks to farmers and consumers. This study aims to improve farmers’ knowledge and practical skills by introducing an alternative, eco-friendly approach through a training program on the production of botanical pesticides derived from papaya leaves (Carica papaya L.). Papaya leaves are known to contain bioactive compounds such as papain, chymopapain, alkaloids, terpenoids, and flavonoids, which exhibit natural insecticidal properties. The training activities consisted of initial observation, presentation of scientific and practical materials, hands-on practice in the preparation of botanical pesticides, and field testing on rice and tobacco plants. The findings demonstrated that the use of papaya leaf-based pesticides effectively reduced pest feeding activity and increased pest mortality rates, thereby minimizing crop damage. Importantly, this approach did not cause harmful effects on the surrounding ecosystem. The program highlights the potential of botanical pesticides as a sustainable solution for integrated pest management in agricultural villages, contributing both to environmental conservation and farmers’ welfare.

Panggungrejo District in Pasuruan City is a central hub for fishing activities with significant potential for capture fisheries production. One of the fishing gears used by fishermen in this area is the boat dredge, which is classified as an active fishing gear. This study aims to assess the environmental friendliness of the boat dredge used by fishermen in Panggungrejo based on the principles of the Code of Conduct for Responsible Fisheries (CCRF). The research employs a descriptive method, using data collection techniques such as interviews with structured questionnaires, direct observations, document analysis, and literature review. The study involved 32 respondents consisting of fishermen using the boat dredge. Data analysis was performed by assigning scores based on the principles outlined in the CCRF that are related to sustainability and environmental impact of the fishing gear. The results showed that the boat dredge in Panggungrejo scored a total of 855, with an environmental friendliness score of 26.71. Based on this score, the boat dredge falls into category III, considered “environmentally friendly.” However, several indicators related to resource efficiency and the impact on aquatic ecosystems still need improvement to further enhance the environmental friendliness of this fishing gear. This study provides recommendations for the development and improvement of more environmentally friendly fishing techniques and increasing fishermen’s awareness of sustainability in fisheries practices.

Extraction is a crucial process for obtaining active compounds from natural materials, such as medicinal plants, spices, and other biomass. The success of the extraction process is greatly influenced by the method used, as each method has its own mechanism, efficiency, and yield. This study compared seven commonly used extraction methods: maceration, percolation, infusion, soxhletation, reflux, Ultrasound-Assisted Extraction (UAE), and Microwave-Assisted Extraction (MAE). Based on data collected from various scientific journals, it was found that modern methods such as UAE and MAE are capable of producing higher yields than conventional methods. Furthermore, both methods are more efficient in terms of extraction time and solvent usage, making them more environmentally friendly and suitable for industrial-scale applications. However, conventional methods such as maceration and percolation still play an important role, especially in initial research or in laboratories with limited equipment. For example, maceration is easy to perform, does not require high energy, and is suitable for heat-sensitive materials. Other factors that influence extraction results include the type of solvent, temperature, time, and the characteristics of the natural material itself. Therefore, the choice of extraction method must be tailored to the research objectives, the type of compound to be extracted, and the availability of resources and equipment. Combining several methods can also be considered to improve the efficiency and quality of the extraction results. It should be emphasized that extraction yield is influenced not only by the method, but also by the type of material, solvent, temperature, time, and particle size. Therefore, the choice of extraction method must be tailored to the nature of the material, the type of target compound, as well as the objectives and availability of resources. In some cases, a combination of extraction methods can also be used to increase efficiency and obtain optimal results.

Muslim-friendly tourism (halal tourism) has become a global trend in line with the increasing number of Muslim tourists, both domestic and international. Ir. H. Djuanda Grand Forest Park (Tahura Djuanda), located in Bandung, is a popular natural and educational tourism destination frequently visited by Muslim travelers, yet it has not obtained official certification as a halal tourism destination. This condition raises a question of how far the available Muslim-friendly services can influence Muslim tourists’ perceptions. This study aims to analyze the effect of Muslim-friendly tourism services on the perceptions of Muslim tourists visiting Tahura Djuanda. The research employed a quantitative descriptive and inferential method with a population of 258,975 domestic tourists who visited during January–June 2025. The sample size was determined using Slovin’s formula, resulting in 100 respondents, with 59 valid responses collected through an online questionnaire using a 5-point Likert scale. Data were analyzed using SPSS version 27, including validity, reliability, and normality tests, as well as Spearman’s Rho correlation test. The findings reveal a significant relationship between Muslim-friendly tourism services (accommodation, halal restaurants, worship facilities, halal-supporting amenities, and tour guides’ understanding) and Muslim tourists’ perceptions, which cover aspects of self, perception targets, and environmental situations. Therefore, the better the Muslim-friendly services provided, the more positive the tourists’ perceptions of Tahura Djuanda. These findings highlight the importance of implementing Muslim-friendly tourism as a strategy to improve visitor satisfaction and strengthen the competitiveness of tourism destinations.

Reworked clothing refers to the process of taking existing garments or textiles and transforming them into new clothing. Wearing reworked clothing is one of the best ways to reduce fashion waste while creating unique and environmentally friendly apparel. Generation Z is a digital generation that tends to express themselves through the clothing they wear. This study explains the simultaneous and partial effects of the variables willingness to pay, income, product quality, and conceptual understanding of the SDGs on the purchase probability for reworked clothing. The research was conducted on 100 respondents in South Jakarta who followed the Instagram account @make.them.jealous by distributing an online Google Form questionnaire, with data analysis performed using SPSS software. The purpose of this study was to determine the simultaneous and partial effects of the independent variables on the dependent variable. The results showed that willingness to pay, income, product quality, and conceptual understanding of the SDGs simultaneously had a significant effect on the purchase probability for reworked clothing. However, willingness to pay and income did not have a partial effect on purchase probability for reworked clothing, while product quality and conceptual understanding of the SDGs had a significant partial effect on the purchase probability for reworked clothing.

As an archipelagic country, Indonesia has significant potential for the utilization of renewable energy, particularly wind energy in maritime areas with low wind speeds (3–6 m/s). This study aims to design and test a vertical Savonius wind turbine system equipped with a Perturb and Observe (P&O) Maximum Power Point Tracking (MPPT) algorithm as a power source for shipboard water heating systems. The research method applied is Research and Development (R&D), integrating several components such as a DC generator, full-wave bridge rectifier, INA219 current sensor, anemometer cup sensor, ESP32 microcontroller, and a monitoring interface utilizing Google Spreadsheet and a 20x4 LCD. The system was tested under two operating conditions: without MPPT and with MPPT. The experimental results show that the application of the MPPT algorithm successfully increased power output by up to 272.64% while maintaining voltage stability despite varying wind speeds. Nevertheless, the average output power of 2.605 W remained insufficient to meet water heating requirements within a short time. For example, charging a 12V 50Ah battery would require approximately 9.6 consecutive days of operation, highlighting the system’s limitations in high-demand scenarios. Despite these constraints, the findings demonstrate that the vertical Savonius wind turbine integrated with MPPT has strong potential as a clean and environmentally friendly alternative energy solution for maritime applications, particularly for small-scale onboard electrical loads. This study contributes to renewable energy utilization in the shipping sector and provides a foundation for further technological development and optimization.

The main issue addressed in this study is the gap between normative policies and actual practices regarding gender mainstreaming (GMS) at the Education Office of Tangerang Regency. The aim of this study is to analyze the implementation of GMS policies using Smith's theory, which includes ideal policy indicators, target groups, implementing organizations, and environmental factors. This research uses a descriptive method with a qualitative approach. Data collection techniques include in-depth interviews, observations, and documentation. The results show that first, the ideal policy is outlined in Regent Regulation No. 10 of 2019; however, it has not been systematically elaborated in the Strategic Plan (RENSTRA) and Work Plan (RENJA) of the Education Office, limiting its implementation. Second, the target groups, such as teachers, students, and the general public, have not fully understood the concept of GMS, as the dissemination of information remains minimal and unfocused. Third, the implementing organization, the Education Office, has not yet optimized coordination in implementing GMS with schools, nor provided comprehensive, specialized training. Fourth, environmental factors, such as strong gender stereotypes, limited gender-friendly facilities, and low public awareness, are significant challenges in the policy’s implementation. Based on these findings, it can be concluded that the implementation of GMS policies at the Education Office of Tangerang Regency remains symbolic and requires strengthening of institutions, more intensive socialization, and active involvement of all stakeholders to achieve more optimal success.

This community service research aimed to empower elementary school children’s creativity through fun, educational, and environmentally friendly activities. Conducted at Bimbel Arsal in Tolokan Village, the project focused on ecoprinting training on tote bags using local natural resources. The activity followed a three-stage implementation process: preparation, execution, and reflection. The preparation stage included coordination with tutoring teachers and the gathering of tools and materials. During the execution stage, children were introduced to ecoprinting and practiced the pounding technique with guidance from the KKN team. The reflection stage involved discussions, a question-and-answer session, and product evaluation. The results showed that the children successfully learned ecoprinting techniques, understood the environmental benefits, and expressed their creativity through unique and beautiful ecoprint designs on tote bags. Although challenges arose—such as difficulties selecting natural materials with strong color yields and technical issues during the beating process—the activity proceeded smoothly, thanks to the children’s enthusiasm, support from the tutoring center, and careful planning. Ultimately, the project proved effective in enhancing the children’s creativity, self-confidence, and environmental awareness. This activity not only empowered children but also contributed to promoting sustainable practices and fostering environmental consciousness among young learners. The success of the program highlights the importance of creative, hands-on learning activities in promoting both personal development and environmental responsibility.

Capacity-building training for housekeeping staff in hotels and restaurants is a crucial aspect of maintaining service quality and enhancing customer satisfaction. Competent housekeeping personnel not only ensure physical cleanliness but also directly impact the reputation, image, and competitiveness of businesses in the hospitality and restaurant sectors. This community service program aims to develop the capacity of housekeeping staff through focused training on mastering cleaning techniques, effective waste management, and the proper and safe use of cleaning tools and materials. The training methodology is conducted directly using a participatory approach, allowing participants to actively engage in practical simulations, discussions, and case studies related to cleaning procedures, operational standards, and waste handling. Evaluation is conducted using pre-test and post-test assessments to measure improvements in participants’ knowledge, skills, and understanding of good cleaning practices. Results demonstrate significant improvements in mastering cleaning techniques, understanding waste management, and the ability to use cleaning tools and materials correctly. Additionally, participants reported increased awareness of the importance of consistently maintaining cleanliness standards, which is expected to be applied in daily workplace activities. The contribution of this community service provides tangible benefits in enhancing human resource quality in the hotel and restaurant sectors while supporting the achievement of professional, hygienic, and environmentally friendly service standards. This training is expected to serve as a sustainable model for the continuous development of housekeeping staff competencies in the broader hospitality and tourism industry.

Water heating systems on ships play a crucial role in supporting crew comfort and operations. However, conventional systems generally operate continuously without automatic control, resulting in energy waste and high operational costs. This situation drives the need for innovation in more efficient and environmentally friendly water heater designs. This research aims to design and implement an automated water heater temperature control system based on an ESP32 microcontroller with on/off control and the use of paraffin wax as a latent heat storage medium. This design is expected to improve energy efficiency while reducing the operational costs of water heaters on ships. The research methodology includes system design, hardware assembly, and performance testing, both static and dynamic. Testing was conducted to evaluate temperature stability and energy efficiency in system conditions with and without the use of paraffin wax. The results showed that paraffin wax improved water temperature stability while reducing the frequency of heater activation. In a 24-hour test, the system without paraffin wax recorded a heater operating time of 15 hours, consuming 8.85 kWh of electricity and costing Rp11,965.20. In contrast, the Paraffin Wax system only requires 10 hours of heater operation, consumes 5.90 kWh, and costs Rp7,976.80. This demonstrates energy savings of 2.95 kWh and a cost efficiency of up to 58%. Therefore, the ESP32-based water heater automation system and heat storage using Paraffin Wax are proven to be more energy-efficient, cost-effective, and have the potential to be an innovative and environmentally friendly solution for ship operational needs.