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The purpose of this PKM is to carry out training on processing cassava leaves into cassava leaf grilled satay for students of the Management study program, Faculty of Economics so that students can learn that cassava leaves can be used as creative processed food products, namely satay. Community service activities were carried out in room A5 of the Management Study Program, Faculty of Economics and Business, Lakidende University. The time of the activity was Monday, March 9, 2024. The community service activities carried out by students of the Management Study Program went well, participants were enthusiastic in participating in the training activities. The evaluation results were 85% or 17 student participants in making cassava leaf grilled satay, the fruit was successful and did not experience difficulties and 15% or 3 student participants were still less successful in making satay, this was because the measurements for making cassava leaf satay did not match the instructions of the supervising lecturer. This community service activity received a positive response from the participants, of course this can be followed up at a later time, with other products such as processing crackers, noodles, and sticks from cassava leaves.

Organic waste is waste consisting of biological elements that have a high level of bacterial reproduction so that it needs to be processed into materials that are useful for plants. Therefore organic waste which is a container as a place for the growth of bacteria and microorganisms, organic waste which can be used as liquid organic fertilizer. Organic fertilizers can be made by a fermentation process that uses a mixture of tape yeast starter and Em-4 as a bioactivator. The purpose of this study was to determine the differences in phosphorus content in liquid organic fertilizers made from waste (Cassava Leaves, Mango Fruit and Spinach) using EM-4 bioactivators for Plants and Tape Yeast. The method used in this research is the experimental method. The parameter to be tested in this study is the phosphorus content test. According to the Regulation of the Minister of Agriculture No.28/SNI/Permentan/OT.140/2/2009 which states that the standard for liquid organic fertilizer with a minimum pH of 6.8 is a maximum of 7.49 and phosphorus (p2o2) is a minimum of 0.10%.

Secara farmakologi daun singkong mempunyai aktivitas sebagai antiinflamasi, antibakteri, antioksidan. Kandungan yang terdapat dalam daun singkong yaitu air, fosfor, karbohidrat, kalsium, vitamin c, protein, lemak, vitamin B1, zat besi, flavanoid, saponin, tanin dan triterpenoid. Daun singkong dipercaya memiliki berbagai manfaat untuk pengobatan penyakit seperti dapat mengobati rematik, asam urat, anemia, konstipasi, serta untuk meningkatkan daya tahan tubuh dan dapat pula mengatasi masalah diare. Berdasarkan penelitian sebelumya oleh (Mutia dkk,.2017) mengemukakan bahwa daun singkong (Manihot esculenta Cranz) memiliki kandungan flavonoid,saponin dan tanin yang digunakan sebagai antibakteri. Salah satunya bakteri penyebab diare yaitu Escherisia Coli.Adanya efek anti bakteri pada daun ubi kayu dikarenakan mengandung mengandung senyawa antibakteri yaitu saponin, tannin dan flavonoid. Bakteri Escherisia Coli merupakan mikroorganisme patogen yang sering menginfeksi manusia. Bakteri ini merupakan salah satu yang menyebabkan terjadinya infeksi saluran kemih, meningitis, pneumonia,diare dan infeksi lainnya. Penyebaran bakteri Escherchia Colli dapat melalui kegiatan tangan ke mulut atau dengan cara pemindahan pasif melalui perantara makanan maupun minuman. Penelitian sebelumnya menunjukkan bahwa ekstrak daun ubi kayu dapat menghambat pertumbuhan bakteri gram positif dan gram negatif. Tujuan penelitian ini adalah mengetahui efek antibakteri ekstrak daun ubi kayu terhadap pertumbuhan bakteri Escherichia coli. Ekstrak ubi kayu dibuat dalam tiga konsentrasi (20%, 40%, 60%) yang diuji daya hambatnya. Penelitian ini menggunakan bakteri Escherichia coli yang dibiakkan dengan media EMBA (Eosin Meythelen Blue Agar) dengan metode paper disk. Didapatkan adanya zona bening disekitar paperdisk yang mengandung ektrak daun ubi kayu. Simpulan penelitian ini adalah ekstrak ubi kayu (Manihot esculenta Crans) memiliki aktivitas antibakteri terhadap bakteri Eschericia coli. Konsentrasi paling efektif dalam menghambat bakteri adalah 60%.