Kelurahan Jatirejo di Kota Semarang merupakan salah satu wilayah yang memiliki permasalahan sampah rumah tangga. Namun kegiatan pengelolaan sampah berbasis masyarakat terkendala oleh waktu dan biaya. Teknik pengomposan dengan metode takakura dapat menjadi solusi dalam pengelolaan sampah rumah tangga di Kelurahan Jatirejo, Kota Semarang. Berangkat dari hal tersebut, kami selaku tim pengabdian melalukan kegiatan pelatihan pembuatan kompos menggunakan metode takakura sebagai solusi penanganan sampah di Kelurahan Jatirejo. Tahapan dalam kegiatan pengabdian ini terdiri dari tahapan persiapan, sosialisasi dan praktik pembuatan kompos. Pada tahapan persiapan, tim pengabdi menggunakan EM4 dalam pembuatan kompos berdasarkan studi literatur. Selanjutnya, tim pengabdi melakukan kegiatan sosialisasi dan praktik pembuatan kompos dengan metode takakura. Setelah kegiatan praktik, para peserta tertarik untuk menerapkan pengomposan dengan metode takakura ditempat tinggal masing-masing. Pengetahuan tentang pemanfaatan sampah rumah tangga bagi ibu-ibu Kelurahan Jatirejo juga semakin berkembang melalui kegiatan pengabdian pelatihan pembuatan pupuk kompos dengan metode takakura. Untuk kegiatan selanjutnya, perlu diuji bagaimana tingkat partisipasi masyarakat Kelurahan Jatirejo dalam pengelolaan sampah berbasis kompos dengan metode takakura. Jatirejo Village in Semarang City is one area that has household waste problems. However, community-based waste management activities are constrained by time and cost. Composting techniques using the takakura method can be a solution to managing household waste in Jatirejo Village, Semarang City. Based on that problem, we as a service team conducted composting training activities using the takakura method to handle waste in Jatirejo Village. The stages in this service activity consist of preparation, socialization and the practice of making compost. In the preparation stage, the service team used EM4 in composting based on a literature study. Furthermore, the service team carried out socialization activities and the practice of making compost using the takakura method. After the practical activity, the participants were interested in applying compost using the takakura method in their respective places of residence. Knowledge related to the use of household waste for women in Jatirejo Village is also growing through service activities for making compost fertilizer using the takakura method. For the next activity, it is necessary to examine how the level of community participation in Jatirejo Village in compost-based waste management using the takakura method is needed.

Pekalongan mempunyai potensi sumber daya alam berupa buah mangrove salah satunya jenis Sonneratia alba atau buah pedada. Buah pedada belum dimanfaatkan secara maksimal oleh karena itu perlu adanya pemanfaatan buah pedada sebagai bahan olahan makanan berupa cokelat mangrove. Tujuan dari kegiatan ini adalah (1) Mengetahui nilai gizi yang terkandung pada cokelat mangrove. (2) Mengetahui nilai rating hedonik (kesukaan) pada cokelat mangrove. Metode analisis proksimat secara deskriptif dengan mengetahui kandungan gizi cokelat mangrove. Parameter yang diukur yaitu kandungan protein, Vitamin C, lemak, air, abu, dan karbohidrat. Uji organoleptik cokelat mangrove untuk menilai hasil olahan coklat mangrove melalui organ indra berupa rasa, warna, aroma, dan tekstur. Uji organoleptik yang digunakan adalah uji rating hedonik (kesukaan). Hasil uji organoleptik menunjukkan cokelat mangrove yang sangat disukai adalah perlakuan P2 (Mangrove 30%:Tepung 20%). Nilai gizi pada cokelat mangrove untuk 100gr mengandung protein 5,56%, vitamin C 0,88%, lemak 29,85%, air 10,3%, kadar abu 0,5%, dan karbohidrat 53,7%. Pencantuman kandungan gizi pada produk olahan mangrove dapat memberikan informasi bahwa selain nikmat untuk dikonsumsi, mangrove baik untuk kesehatan karena mengandung gizi yang dibutuhkan oleh tubuh. Hasil sidik ragam menunjukkan bahwa warna, rasa, aroma, dan tekstur berpengaruh terhadap cokelat mangrove. Kata Kunci: Sonneratia alba, Cokelat mangrove, Nilai gizi, Nilai hedonik.

The purpose of this study is to analyze the factors that influence the use of dairy cow dung as a source of biogas energy in Gogik Village, West Ungaran District. In this study, the method used is a qualitative method by conducting in-depth interviews, observation, and documentation. The results of this study indicate that the factors that influence the use of biogas energy sources can be viewed from technical factors, social factors, and economic factors. In terms of the availability of livestock and manure produced by Gogik Village, it is feasible to implement biogas technology on a household scale. In terms of livestock raising, Gogik Village has indeed met the eligibility requirements for the implementation of biogas. The community using biogas in Gogik Village has provided a land area according to the provisions of about 20 m2. In terms of social factors, the application of biogas technology in the community must be adjusted to the habits or culture of the community groups. On the other hand, the labor required to manage biogas in Gogik Village ranges from one to two people. In terms of economic factors, the effect of biogas use on community needs has not been fully felt by the biogas user community.

The livestock sector is one of the most significant contributors to greenhouse gas (GHG) emissions. Jetak Village in Indonesia has a large livestock population, so it has the potential to be a reasonably high contributor to GHG emissions. Therefore, research is needed to calculate GHG from the livestock sector and calculate biogas potential. Besides, we also discuss data collection techniques that are important but often forgotten in GHG reduction studies in developing countries. This is useful as an effort and reference to reduce GHG emissions in rural areas, especially in Jetak Village. The GHG calculation uses the Tier-1 method, while the data on the potential for biogas utilization is obtained from manure production calculations and in-depth interviews. The calculation results show that the highest total GHG from livestock management in Jetak Village in 2017 was 1,106.69 tons CO2-eq/year, while the lowest total GHG emissions in 2015 were 1,018.41 CO2-eq Gg/year. Dairy cows are the biggest emitter in livestock management, with 4,919.61 tons of CO2-eq/year, and laying hens are the lowest emitters with 1.39 tons CO2-eq/year. Dairy cows are the largest contributor to GHG emissions in enteric fermentation with 9,680.52 tons CO2-eq/year, and the lowest number of contributors is horses with 20.79 tons CO2-eq/year. The potential of biogas in Jetak Village based on manure production is 137 installations. The positive community's perception supports this. It tends to be less valid regarding livestock population data used for GHG calculations, so we verified it during in-depth interviews. The in-depth interview process used local language to enhance the quality of responses. This research needs to be developed considering our findings that there are only 50 biogas installations, indicating the biogas potential is not being utilized to its full potential.

No abstract