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All Journal Indonesian Journal of Biotechnology Jurnal Lembaga Pengabdian Kepada Masyarakat Undana Kelimutu Journal of Community Service
Jasman Jasman
Biotechnology Study Program, Universitas Gadjah Mada Science Education Department, Universitas Nusa Cendana
Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Engineering Health Professions Immunology & microbiology Materials Science & Nanotechnology Social Sciences Other

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Ethanol Fermentation on Mixed Sugars Using Mixed Culture of Two Yeast Strains J. Jasman; Irfan Dwidya Prijambada; Chusnul Hidayat; Donny Widianto
Indonesian Journal of Biotechnology Vol 18, No 2 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (162.484 KB) | DOI: 10.22146/ijbiotech.7880

Abstract

The objective of this study was to evaluate the use of mixed cultures of the recommended yeast strainsfrom a previous study on ethanol fermentation using a substrate mixture consisting of sucrose, glucose, andfructose. There were three mixed (combination) cultures namely OUT7096/OUT7913, OUT7096/OUT7921,and OUT7913/OUT7921. The fermentation medium contained sugar mixture consisting of glucose, fructose,and sucrose with a composition generally close to the composition of sugars in sweet sorghum juice. Overall,fermentation is carried out in two stages. First fermentation was performed using the three mixed culturesto determine the best combination based on the concentration of ethanol produced and the concentration ofresidual sugar. Second fermentation was conducted using the best mixed culture obtained from the fi rst stage.This second stage was intended to describe the pattern of the changes in the concentration of ethanol, sugarsand biomass during the fermentation progresses and to determine some kinetic parameters namely ethanolyield (Yp/s), growth yield (Yx/s) and specifi c growth rate (μ). The results of the fi rst fermentation showed thatthe best mixed culture was OUT7913/OUT7921 and the subsequent fermentation using this culture providethe highest ethanol yield (Yp/s) = 0.47 g.g-1 that was reached at 53rd hour, growth yield (Yx/s) = 0.425 g.g-1, andμ = 0.12 hour-1.Keywords : fermentation, ethanol, mixed culture, mixed sugar
Selection of Yeast Strains for Ethanol Fermentation of Glucose-FructoseSucrose Mixture J. Jasman; Irfan Dwidya Prijambada; Chusnul Hidayat; Donny Widianto
Indonesian Journal of Biotechnology Vol 17, No 2 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijbiotech.16001

Abstract

This study was aimed to compare the ability of some yeast strains to consume sugars (sucrose, glucoseand fructose) and to convert them into ethanol during fermentation. The results of this comparison will be thebasis of considerations in choosing the right strain to be used as a mixed culture to increase the productionof ethanol from substrate containing a mixture of sucrose, glucose and fructose, such as juice of cane andsweet sorghum. The study was conducted using fermentation in substrate consisting of glucose, fructose,and sucrose separately, glucose-fructose mixture, and glucose-fructose-sucrose mixture using some yeaststrains: FNCC3012, OUT7009, OUT7027, OUT7055, OUT7080, OUT7096, OUT7903, OUT7913, and OUT7921.Following the fermentation, analysis of the produced ethanol and the remaining sugar was conducted. Theresults of study indicated that the strains with the highest substrate consumption were OUT7921, OUT7096,OUT7055, OUT7027, and OUT7913 for glucose, fructose, glucose-fructose mixture, sucrose, and glucosefructose-sucrose mixture, respectively. Strains that produced highest concentration ethanol were OUT7096 inglucose and sucrose substrates, OUT7921 in substrate of glucose-fructose mixture and sucrose, OUT7913 insubstrate of glucose-fructose-sucrose mixture. Upon consideration of each strain capacity, both in consumingsugar and producing ethanol, the recommended strains for use in mixed culture in bioethanol fermentationusing mixed substrate of glucose, fructose and sucrose are OUT7096, OUT7913, and OUT7921.
Pemanfaatan Daun Kelor (Moringa oleifera) menjadi Olahan Makanan yang Bergizi Lolita A. M. Parera; - Jasman; I Gusti M. N. Budiana; Kasimir Sarifudin
Jurnal Pengabdian Kepada Masyarakat Undana Vol 15 No 1 (2021): JUNI 2021
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jpkmlppm.v15i1.4887

Abstract

Abstract - Seki Village is a dry land area in the East Nusa Tenggara region where the majority of the population work as farmers. Moringa plants are easy to grow in dry land areas, so they are widely available in Seki village. Scientifically, Moringa that grows in dry land areas in NTT has a higher nutrient content than those found elsewhere. At the time of the survey in the partner area, namely the homes of residents in Seki Village, it was stated that this plant lives very much and is abundant. The problem occurs when the abundant moringa plant is only processed in the form of boiled vegetables so that on average it is disliked by children and adults who consume it. However, if it is processed in an innovative way, it will increase people's interest in consuming it and can improve the economy of the people. This Program of devotion is implemented to provide alternative solutions. External to be achieved: 1) Increased community motivation to be more productive and creative in managing Moringa leaves, 2) Knowing science and technology to produce noodles and cakes made from Moringa leaves, 3) Skilled in making noodles and cakes made from moringa Moringa leaves, 4) Increased business opportunity reference for the people of Seki Village. The program partners are local women who are members of the Ebenhazer Congregation. The program ran smoothly and received support from church leadership. The results obtained 1) This service has a positive impact on the community by introducing the technology of making noodles and cakes made from Moringa leaves as an alternative for consuming Moringa leaves, 2) This program provides skills to partner groups regarding the ways and steps of making noodles and cakes made from moringa Moringa leaves which have the potential as a home industry, 3) still need special attention from various parties to improve the Village Human Resources Seki in maximizing the potential of Moringa leaves. The method used is through a workshop, namely the provision of material and practice of making noodles and cakes made from Moringa leaves by the participants in the activity. Abstrak – Desa Seki merupakan daerah lahan kering di wilayah nusa tenggara timur yang mayoritas penduduknya berprofesi sebagai petani. Tanaman kelor merupakan yang mudah tumbuh di daerah lahan kering sehingga banyak terdapat di desa Seki. Secara ilmiah, kelor yang tumbuh di daerah lahan kering di NTT mempunyai kandungan gizi lebih tinggi dari kandungan gizi yang hidup di tempat lain. Pada saat survei di daerah mitra yaitu rumah warga di Desa Seki bahwa tanaman ini hidup sangat banyak dan melimpah. Masalah terjadi ketika tanaman kelor yang melimpah hanya diolah dalam bentuk sayur yang direbus sehingga rata-rata tidak disukai oleh anak-anak dan orang dewasa yang mengkonsumsinya. Namun bila didiolah secara inovatif maka akan menambah minat masyarakat dalam mengonsumsinya dan dapat meningkatkan perekeonomian warga. Program pengabdian ini dilaksanakan untuk memberikan solusi alternatif yang ingin dicapai yaitu: 1) Meningkatnya motivasi masyarakat untuk lebih produktif dan kreatif dalam mengelola daun kelor, 2) Mengetahui IPTEK memproduksi mie dan kue berbahan dasar daun kelor, 3) Terampil membuat mie dan kue berbahan dasar daun kelor, 4) Meningkatnya referensi peluang usaha bagi masyarakat Desa Seki. Mitra program adalah para ibu-ibu warga sekitar yang tergabung dalam Jemaat Ebenhazer. Program berjalan dengan lancar dan mendapat dukungan dari pimpinan jemaat. Hasil yang diperoleh 1) Pengabdian ini berdampak positif bagi masyarakat dengan memperkenalkan teknologi pembuatan mie dan kue berbahan dasar daun kelor sebagai salah satu alternatif dalam mengkomsumsi daun kelor, 2) Program ini memberikan ketrampilan kepada kelompok mitra terkait cara dan langkah pembuatan mie dan kue berbahan dasar daun kelor yang berpotensi sebagai industri rumah tangga, 3) masih perlu perhatian khusus dari berbagai pihak untuk meningkatkan SDM Desa seki dalam memaksimalkan potensi daun kelor. Metode yang digunakan adalah melalui kegiatan workshop yakni pemberian materi dan praktik membuat mie dan kue berbahan dasar daun kelor oleh peserta kegiatan
Pelatihan Visualisasi Molekul Kimia dengan Software Chemsketch bagi Peserta didik SMA di Kota Kupang NTT Sudirman Sudirman; Jasman .; I Gusti M.N. Budiana; Dewi Lestarani; Eka Citra G. Kerihi; Yusnaeni .
Jurnal Kelimutu Pengabdian Masyarakat Vol 3 No 1 (2023): Mei
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/kjcs.v3i1.11211

Abstract

The problems in learning chemistry faced by teachers at school include: (1) how to visualize chemical molecular structures that are still manual, namely drawing on whiteboards or sometimes with the Microsoft Word program which is familiar to most students will give results that are not in accordance with the rules of writing symbols; (2) the aspect of the teacher's and students' lack of insight regarding the Chemsketch software for drawing chemical molecular structures; and (3) aspects of students' enthusiasm and interest in self-development which are still limited. Of all the problems faced by partners, the solution offered is a Chemical Molecule Visualization Training activity with Chemsketch Software for High School Students in Kupang City, NTT. With this training, students are expected to have knowledge and skills in using Chemsketch Software in drawing chemical molecular structures and attracting students' learning interest and arousing students' curiosity through observing the material displayed through visualization of chemical molecular shapes.
Co-Authors Chusnul Hidayat Chusnul Hidayat Donny Widianto Donny Widianto Eka Citra G. Kerihi I Gusti M. N. Budiana I Gusti M.N. Budiana Irfan Dwidya Prijambada Irfan Dwidya Prijambada Kasimir Sarifudin Lestarani, Dewi Parera, Lolita A. M. Sudirman Sudirman Yusnaeni .