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Enzymatic Hydrolysis of Sorghum Bagasse to Readily Fermentable Sugar for Bioethanol Soeprijanto; Katherin Indriawati; Nurlita Abdulgani
Jurnal Rekayasa Proses Vol 8, No 1 (2014)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Produksi gula dari bagase sorghum menggunakan enzim selulase dan selobiase dilakukan dalam kultur batch. Tujuan percobaan adalah mempelajari pengaruh beban bagase sorghum dan waktu pretreatment kapur terhadap produksi gula dan yield gula. Pretreatment kapur dilakukan dalam 1000 ml labu leher tiga dengan beban kapur 0,1 g Ca(OH)2 /g sorghum bagasse dan ditambah dengan 500 ml air distilasi. Pengaruh waktu pretreatment (1, 2, 3, dan 4 jam) pada suhu 100°C dan pengaruh beban biomassa (5, 10, 15 % w/v) pada hidrolisis enzim untuk menghasilkan gula. Hasil penelitian menunjukkan bahwa konsentrasi gula maksimum dicapai sebesar 28,04 g/l dalam waktu pretreatment 4 jam; dan yield maksimum gula diperoleh 0,4 g glukose/ g biomassa dengan beban biomassa 5% (w/v). Kata kunci: Bagase sorghum, selulase, selobiase, hidrolisis enzim, kultur batch, pretreatment kapur Production of sugar from sorghum bagasse using enzyme of cellulase and cellobiase in a batch culture was conducted. The purpose of this experiment was to study of the effect of sorghum baggase loadings and lime pretreatment time on production and yield of sugar. Lime pretreatment was carried out in a 1000 ml three-neck flask with a lime loading of 0.1 g Ca(OH)2 /g sorghum bagasse and added with 500 ml distilled water. Effects of pretreatment time course (1, 2, 3, and 4 h) at temperature of 100°C and biomass loading (5, 10, 15 % w/v) were observed to produce sugar. The results showed that maximum concentration of sugar obtained was 28.04 g/l with a pretreatment time of 4 h; and the maximum yield of sugar obtained was 0.4 g glucose/ g biomass with a biomass loading of 5% (w/v). Keywords: Batch culture, cellulose, cellobiase, Enzymatic hydrolysis, ime pretreatment, sorghum bagasse

Enzymatic Hydrolysis of Sorghum Bagasse to Readily Fermentable Sugar for Bioethanol Soeprijanto; Katherin Indriawati; Nurlita Abdulgani
Jurnal Rekayasa Proses Vol 8, No 1 (2014)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.5019

Produksi gula dari bagase sorghum menggunakan enzim selulase dan selobiase dilakukan dalam kultur batch. Tujuan percobaan adalah mempelajari pengaruh beban bagase sorghum dan waktu pretreatment kapur terhadap produksi gula dan yield gula. Pretreatment kapur dilakukan dalam 1000 ml labu leher tiga dengan beban kapur 0,1 g Ca(OH)2 /g sorghum bagasse dan ditambah dengan 500 ml air distilasi. Pengaruh waktu pretreatment (1, 2, 3, dan 4 jam) pada suhu 100°C dan pengaruh beban biomassa (5, 10, 15 % w/v) pada hidrolisis enzim untuk menghasilkan gula. Hasil penelitian menunjukkan bahwa konsentrasi gula maksimum dicapai sebesar 28,04 g/l dalam waktu pretreatment 4 jam; dan yield maksimum gula diperoleh 0,4 g glukose/ g biomassa dengan beban biomassa 5% (w/v). Kata kunci: Bagase sorghum, selulase, selobiase, hidrolisis enzim, kultur batch, pretreatment kapur Production of sugar from sorghum bagasse using enzyme of cellulase and cellobiase in a batch culture was conducted. The purpose of this experiment was to study of the effect of sorghum baggase loadings and lime pretreatment time on production and yield of sugar. Lime pretreatment was carried out in a 1000 ml three-neck flask with a lime loading of 0.1 g Ca(OH)2 /g sorghum bagasse and added with 500 ml distilled water. Effects of pretreatment time course (1, 2, 3, and 4 h) at temperature of 100°C and biomass loading (5, 10, 15 % w/v) were observed to produce sugar. The results showed that maximum concentration of sugar obtained was 28.04 g/l with a pretreatment time of 4 h; and the maximum yield of sugar obtained was 0.4 g glucose/ g biomass with a biomass loading of 5% (w/v). Keywords: Batch culture, cellulose, cellobiase, Enzymatic hydrolysis, ime pretreatment, sorghum bagasse

EVALUATION OF TECHNOLOGY AND ENGINEERING VOCATIONAL SCHOOL STUDENTS IMPLEMENTATION: SYSTEMIC LITERATURE REVIEW Endah Sri Wahyuni; Riyan Arthur; Soeprijanto
Jurnal Pensil : Pendidikan Teknik Sipil Vol 12 No 3 (2023): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v12i3.37470

Implementation of Field Work Practice (FWP) for Vocational High School (VHS) students is one of the programs planned as a means for students to improve competence in both soft skills and hard skills, besides that by carrying out FWP students get learning and training bythe world of work. Every student supervisor or teacher has difficulty evaluating the results of street vendors, due to the lack of references obtained by student supervisors in implementing the street vendors program at VHS. This study aims to identify and analyze various approaches and evaluation models that have been used in the implementation of street vendors in VHS students. This research method uses a systematic literature review (SLR) with a descriptive explanatory type of research to gain a comprehensive understanding of the evaluation of the street vendors program implementation. This study found 50 articles on the topic of street vendors from various disciplines, but 15 research articles that were appropriate to the topic of Technology and Engineering came from various literary sources or based on the database found on Google Scholar. This study produced three evaluation models, namely the Context, Input, Process, and Product (CIPP) model with 15 articles, the discrepancy model with 3 articles, and the goal-oriented model with 2 articles. The contribution of this research is expected to increase understanding of the evaluation of the implementation of the street vendors program for VHS students and to lay a strong basis for the development of better evaluations in the future.

Model Evaluasi Kurikulum Sekolah Pra-Nikah Berbasis Digital Terintegrasi Kesetaraan Gender Perspektif Filosofi Timur Josua, Dian Pertiwi; Nuridayanti; Anan Sutrisna; Yeti Supriyati; Awaludin Tjalla; Soeprijanto
Jurnal Evaluasi Pendidikan Vol. 15 No. 2 (2024): JURNAL EVALUASI PENDIDIKAN
Publisher : PROGRAM STUDI PENELITIAN DAN EVALUASI PENDIDIKAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jep.v15i2.51034

Penelitian ini bertujuan mengevaluasi model kurikulum Sekolah Pra-Nikah berbasis digital yang mengintegrasikan nilai kesetaraan gender dalam perspektif filsafat Timur. Pendekatan campuran dengan desain eksplanatori sekuensial digunakan untuk mengukur efektivitas kurikulum melalui indikator CIPP (Context, Input, Process, Product). Data kuantitatif dianalisis secara deskriptif-inferensial, sementara data kualitatif dianalisis menggunakan teknik tematik. Hasil analisis menunjukkan bahwa kurikulum memiliki tingkat relevansi tinggi dengan kebutuhan generasi milenial, dengan skor rata-rata dimensi Context sebesar 4,25 (85%), Input sebesar 4,00 (80%), Process sebesar 3,90 (78%), dan Product sebesar 4,10 (82%). Materi terkait seksualitas memperoleh pemahaman tertinggi (95%), diikuti pengelolaan konflik (90%), dan pengambilan keputusan (85%). Hasil kualitatif menunjukkan peserta merasa kurikulum mampu mengubah perspektif tradisional patriarki menjadi lebih inklusif. Pendekatan ini efektif dalam mengintegrasikan prinsip budaya Timur melalui pembelajaran digital. Kontribusi penelitian mencakup pengembangan teori desain kurikulum inovatif dan pendidikan pranikah berbasis digital yang relevan dengan dinamika sosial modern.

Pelatihan Pembuatan Soal berbasis HOTS bagi Guru Guru jenjang SD, SMP, SMA, dan SMK di kecamatan Muara gembong. daryanto; Soeprijanto
Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Vol. 5 No. 1 (2024): PROSIDING SEMINAR NASIONAL PENGABDIAN KEPADA MASYARAKAT - SNPPM2024
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Negeri Jakarta

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Abstract This training aims to improve teachers' capacity in compiling questions that challenge students to think more deeply, in accordance with HOTS standards. The main target of this training is teachers from all levels of education in Muara Gembong District. Each level of education has its own characteristics, but the development of HOTS-based questions can be applied at all levels, from elementary to vocational schools. The results of the needs analysis identified that many teachers still need to improve their understanding of pedagogy and fields of study. In addition, in the training on learning oriented to high-level thinking skills, the pretest results showed an average score of 55 points while the posttest results showed an average score of 70 points, this result indicates an increase in value of 15 points from the initial understanding. Although this result is still below the expected value, namely: 75%. The results obtained in this activity include: (1) increasing teachers' understanding of the HOTS-oriented learning approach; (2) increasing teachers' pedagogical and field of study competencies in managing classroom learning. The follow-up analysis in this activity is: (1) Assisting teachers in making planning plans; (2) Assistance for teachers in developing HOTS-oriented learning tools. Keywords: understanding HOTS, assistance, HOTS-oriented learning. Abstrak Pelatihan ini bertujuan untuk meningkatkan kapasitas guru dalam menyusun soal yang menantang siswa berpikir lebih mendalam, sesuai dengan standar HOTS. Sasaran utama dari pelatihan ini adalah guru dari semua jenjang pendidikan di Kecamatan Muara Gembong. Setiap jenjang pendidikan memiliki karakteristik tersendiri, namun pengembangan soal berbasis HOTS dapat diterapkan pada semua tingkat, mulai dari SD hingga SMK. Hasil analisis kebutuhan teridentifikasi bahwa masih banyak guru-guru membutuhkan peningkatan pemahaman tentang pedogogik dan bidang studi. Disamping itu, pada pelatihan tentang pembelajaran berorientasi pada keterampilan berpikir tingkat tinggi, hasil pretest menunjukkan nilai rata-rata mencapai point 55 sedangkan hasil pos test menunjukkan nilai rata-rata mencapai point 70, hasil ini menandakan ada kenaikan nilai sebesar 15 point dari pemahaman awal. Walaupun hasil ini masih dibawah nilai yang diharapkan yaitu: 75%. Hasil yang diperoleh dalam kegiatan ini diantaranya adalah: (1) meningkatnya pemahaman guru-guru tentang pendekatan pembelajaran berorientasi HOTS; (2) meningkatkan kompetensi pedagogik dan bidang studi guru dalam mengelola pembelaaran di kelas. Analisis tindak lanjut dalam kegiatan ini adalah: (1) Pendampingan guru-guru dalam membuat perencanaan perencanaan; (2) Pendampingan guru-guru dalam mengembangkan perangkat pembelajaran yang berorientasi HOTS. Kata Kunci: pemahaman HOTS, pendampingan, pembelajaran berorientasi HOTS.

HUBUNGAN ANTARA PERSEPSI SISWA MENGENAI KOMPETENSI PEDAGOGIK DAN PROFESIONAL GURU DENGAN HASIL BELAJAR SISWA MATA PELAJARAN RANGKAIAN LISTRIK Muzayanah, Azza; Soeprijanto; Farried Wadjdi
Journal of Electrical Vocational Education and Technology Vol. 6 No. 2 (2022): Jurnal Of Electrical Vocational Education and Technology
Publisher : Fakultas Teknik Universitas Negeri Jakarta

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Abstract The studies aims is show The relationship between students’s perception of pedagogy and profesional competence teachers with wtudetnts learning achivements (Case Studies on SMKN 26 Jakarta Package Expertse TIPTL grade X). Studies is done in SMKN 26 Jakarta, held on June 2016. The quantitative metodology with survei by approach associative. The samples were 51 students that is the students on grade X. Is a technique random sampling used in the sample collection. Instrumen used to getting data of X variabel (students’s perception about competence teachers) in this reasherch is measured using likert scale while Y Variabel (learning achivements) taken from the value of student’s UAS. Data analysis technique start from find regression. The requirements of analysis of normaity test by test lilliforce and it shows that data is normal distribution. Then the hypotesis use the correlation product momment and obtain r 0,43 so that it can be said that X1 and X2 variable have positf relation with Y variable. The result showed that value thitung greater than the ttabel (4,57 ˃ 2,009) with significant 0,05 standard, it show that H0 was refused so that can be concluced that there is a positive relationship between students’s perception of pedagogy and profesional competence teachers with studetnts learning achivements Abstrak Abstrak Penelitian ini bertujuan untuk mengetahui hubungan antara persepsi siswa mengenai kompetensi Pedagogik dan profesional guru dengan prestasi belajar siswa (studi kasus pada SMKN 26 Jakarta paket keahlian TIPTL kelas X). Penelitian dilakukan di SMKN 26 Jakarta, dilaksanakan pada bulan Juni 2016. Metode penelitian yang digunakan adalah kuantitatif dengan menggunakan survei dengan pendekatan asosiatif. Sampel yang diteliti berjumlah 51 siswa yaitu siswa kelas X. Adalah teknik random sampling yang digunakan dalam pengambilan sampel. Insturmen yang digunakan untuk memperoleh data variabel X (Persepsi siswa mengenai kompetensi guru) dalam penelitian ini diukur dengan menggunakan skala likert sedangkan variabel Y (Prestasi Belajar) diambil dari nilai UAS siswa. Teknik analisis data dimulai dari mencari persamaan regresi. Uji persyaratan analisis yaitu uji normalitas dengan uji liliefors dan di dapatkan menandakan bahwa data berdistribusi normal. Selanjutnya uji hipotesis menggunakan uji korelasi product moment dan diperoleh r sebesar 0,43 sehingga dapat dikatakan bahwa variabel X1 dan X2 mempunyai hubungan yang poritif dengan variabel Y. Hasil penelitian menunjukkan bahwa nilai thitung lebih besar dari nilai ttabel (4,57 ˃ 2,009) dengan taraf signifikan 0,05 yang artinya H0 ditolak sehingga dapat disimpulkan bahwa terdapat hubungan yang positif dan signifikan antara persepsi siswa mengenai kompetensi pedagogik dan profesional guru dengan prestasi belajar siswa.

Evaluation Model of Institutions Based on Scriven's Consumer-Oriented Approach to Improve the Quality of Digital Services for Students Josua, Dian Pertiwi; Nuridayanti; Riyadi; Soeprijanto; Badrujaman, Aip
Information Technology Education Journal Vol. 4, No. 2, May (2025)
Publisher : Jurusan Teknik Informatika dan Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/intec.v4i2.7723

This study aims to implement an institutional evaluation model based on Consumer-Oriented Scriven to improve the quality of digital services for students at the State University of Jakarta (UNJ). The available digital services are considered less than optimal by students, so an evaluation model is needed that focuses on user needs and satisfaction. This study uses a mixed approach with a case study method, with data collection through in-depth interviews, surveys, and direct observation. The quantitative survey used a Likert scale to measure student satisfaction with various aspects of digital services, such as academic information systems (73% satisfied), e-learning (68%), financial applications (65%), online registration (70%), and online help services (66%). The validity of the analysis instrument was tested through factors and expert assessments, while the reliability showed a Cronbach Alpha (α) value of 0.87 which is classified as very good. The results of the study indicate that this evaluation model is able to identify areas that need to be improved and encourage student participation in the service evaluation process. The application of the consumer-oriented Scriven evaluation model has been shown to make a significant contribution to improving the quality of digital services at UNJ which are more responsive and efficient.

Eksplorasi Kemampuan Literasi Membaca dan Digital Masyarakat Baduy: Implikasi untuk Pendidikan di Era Digital Arianda, Yoga Dwi; Purwaningsih, Sri; Luthfianti, Yasinta; Triana, Dinny Devi; Soeprijanto
Jurnal Penelitian dan Pengembangan Sains dan Humaniora Vol. 9 No. 2 (2025): July
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jppsh.v9i2.100653

Komunitas Baduy dikenal dengan gaya hidup tradisional yang terisolasi dari dunia luar. Literasi di kalangan masyarakat lebih banyak bersifat lisan, dengan pengetahuan yang ditransmisikan melalui cerita dan tradisi. Namun, perkembangan teknologi informasi yang pesat menimbulkan tantangan bagi mereka dalam mengadopsi literasi digital, yang sangat penting di era globalisasi ini. Penelitian ini bertujuan untuk menganalisis kemampuan literasi membaca dan digital masyarakat Baduy serta implikasinya untuk pendidikan di era digital. Jenis penelitian menggunakan pendekatan kualitatif dan desain studi kasus. Subjek penelitian terdiri atas anggota komunitas Baduy. Teknik pengambilan sampel menggunakan teknik purposive sampling. Metode pengumpulan data meliputi wawancara semi terstruktur dan observasi partisipatif. Teknik analisis data dengan triangulasi. Hasil penelitian menunjukkan bahwa meskipun literasi membaca tradisional mereka kuat, akses terhadap literasi digital sangat terbatas. Penelitian ini menyarankan bahwa untuk meningkatkan literasi digital, program pendidikan yang sensitif terhadap budaya perlu dirancang, dengan melibatkan komunitas dalam setiap tahap perencanaan. Implikasi penelitian dapat memberikan wawasan untuk pengembangan literasi digital yang inklusif di komunitas adat, sambil tetap mempertahankan warisan budaya mereka.

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