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All Journal Reaktor International Journal of Renewable Energy Development JMM (Jurnal Masyarakat Mandiri) AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar ASEAN Journal of Chemical Engineering Food ScienTech Journal Jurnal Pengabdian Masyarakat Khatulistiwa REACTOR : Journal of Research On Chemistry And Engineering Dedikasi: Jurnal Pengabdian kepada Masyarakat Journal of Industrial Community Empowerment International Journal of Renewable Energy Development Journal of Clean Technology Advance Sustainable Science, Engineering and Technology (ASSET) Jurnal Abdimas Sainteknol : Jurnal Sains dan Teknologi
Bahlawan, Zuhriyan Ash Shiddieqy
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Negeri Semarang, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences Other

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Diversifikasi Olahan Susu Sapi Segar Menjadi Produk Kefir untuk Minuman Probiotik dan Masker Wajah di Kelurahan Plalangan Gunungpati Semarang Haniif Prasetiawan; Bayu Triwibowo; Ratna Dewi Kusumaningtyas; Zuhriyan Ash Shiddieqy Bahlawan; Catur Rini Widyastuti
Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar Vol 4, No 2 (2022): Juli-Desember
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/baktiku.v4i2.5691

Abstract

Plalangan Village is one of the villages that produce fresh cow's milk in the administrative area of Gunungpati District, Semarang City, Central Java Province. The average daily activity of residents of Terwidi Village RT02 RW04, Plalangan Village, Gunungpati District, Semarang City in particular is raising cattle. The number of cattle breeders is 40 people who are members of the Ngudi Rahayu Terwidi Dairy Cattle Group (KTSP). The current number of cows is 75 heads, much lower than 5 years ago. The decline in the number of cows is due to the fact that they think that a dairy business that only relies on dairy products does not provide a steady income. Even though there is a lot of potential that can be developed from the dairy cattle business, including the diversification of dairy products. Kefir is a heterofermentative fermented product that has a taste, color and texture that resembles yogurt and has a distinctive aroma like tape. Kefir products circulating in the community today are not only consumed as probiotic drinks but can also be used as cosmetic products, such as masks. The main program will be carried out by the Community Service (PKM) team by empowering dairy cattle businesses through diversification of fresh cow's milk products to become high-value products, namely kefir which can be used as probiotic drinks and face masks.
Synergistic Enhancement of Lignocellulosic Biomass Saccharification via Ultrasound-Assisted Pretreatment with Magnetic Fe₃O₄ Hanif Ardhiansyah; Astrilia Damayanti; Zuhriyan Ash Shiddieqy Bahlawan; Serlia Fitri Sadan; Nurul Khusna; Karenina Hakim
Sainteknol : Jurnal Sains dan Teknologi Vol. 23 No. 2 (2025): December 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v23i2.41061

Abstract

The recalcitrant structure of lignocellulosic biomass necessitates efficient pretreatment strategies to enhance enzymatic saccharification for biofuel production. This study investigates a synergistic approach combining ultrasound irradiation with magnetic Fe₃O₄ for pretreating rice straw. A 2² factorial experimental design was employed to systematically evaluate the individual and combined effects of ultrasound (300 W, 30 min) and Fe₃O₄ addition (1.5 wt%). The combined treatment exhibited a pronounced synergistic effect, achieving 68.3% delignification and reducing the crystallinity index from 52.4% to 31.2%. These structural modifications resulted in a saccharification yield of 72.5%, which was significantly higher than the theoretical additive yield of 48.7% (raw: 18.5%, Fe₃O₄-only: 26.0%, ultrasound-only: 41.2%). SEM observations revealed extensive surface erosion, pore formation, and microfibril exposure after the combined pretreatment, while FTIR analysis confirmed substantial lignin removal. Furthermore, magnetic Fe₃O₄ demonstrated excellent magnetic separability, with a recovery efficiency higher than 95%, and maintained pretreatment performance over five reuse cycles with < 8% reduction in efficacy. Overall, this work presents a green, efficient, and economically promising pretreatment strategy based on synergistic ultrasound–magnetic Fe₃O₄ interactions, offering an effective pathway for enhancing lignocellulosic biomass saccharification and supporting the development of sustainable biorefinery processes.
Optimizing Carica Waste Processing into Liquid Organic Fertilizer Using Bioconversion Techniques to Increase Agricultural Productivity in Kejajar District, Wonosobo Zuhriyan Ash Shiddieqy Bahlawan; Megawati Megawati; Irene Nindita Pradnya; Astrilia Damayanti; Indrasukma Permanadewi; Maulida Zakia
Journal of Clean Technology Vol. 3 No. 1 (2026): February 2026
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/joct.v3i1.44800

Abstract

This community service program aims to optimize the use of Carica (Carica pubescens) waste into liquid organic fertilizer through bioconversion techniques, while simultaneously increasing the capacity of MSMEs and farmer groups in Kejajar District, Wonosobo. Activities include outreach, training, and mentoring in the production of liquid organic fertilizer on a household scale using simple technology based on decomposer microbes. The results of the community service show an increase in partners' knowledge and skills in Carica waste fermentation techniques, as well as in the production of liquid organic fertilizer with physical, chemical, and microbiological properties suitable for organic farming. Analysis shows decrease in pH and color changes, a distinctive fermentation odor, and increases in nutrient content (N, P, K), along with variations in substrate concentration. In addition, participants received mentoring on digital marketing strategies to increase the product's economic value. This program contributes to reducing Carica industrial waste, providing alternative organic fertilizers, and empowering local communities to improve welfare based on regional potential.
Co-Authors Abdurrafi, Faishol Achmad Wikandaru Achmad Yanuar Maulana Agung Efriyo Hadi Akhmad Sutrisno Aldias Bahatmaka Alfiansyah Aji Pratama Amrullah, Fauzan Anggun Enjelita Anggun Septiamurti Anggun Septiamurti Astrilia Damayanti Ayasha Maharani Ayu Nur Permadhini Bayu Triwibowo Bayu Triwibowo Calista Arsanti Ramadhani Catur Rini Widyastuti Catur Rini Widyastuti, Catur Rini Daffa Nur Muhammad Destantri, Fitri Wahyuningtyas Dewi, Yasinda Verrel Dinara Shinka Dhoni Hartanto Diana, Savira Rahma Dillah, Shohib Qomad Dwi Prasojo Dyta Silvia Mayasari Fahreza Pracenda Felicitia Fandika, Putri Maharani Adinda Fauzan Amrullah Fitri Nur Kayati Fitriyana, Deni Fajar Handoko, Pratama Senapati Bagus Hanif Ardhiansyah Haniif Prasetiawan Harianingsih, Harianingsih Harsya Grezdipa Pratama Hutomo , Gayuh Aditya Hutomo, Gayuh Aditya Ichwan, Rizky Ima Winaningsih Imani, Nadya Alfa Cahaya Imanullah, Kautsar Taqi Indrasukma Permanadewi Irene Nindita Pradnya Irene Nindita Pradnya Jannah, Reni Ainun Januar Parlaungan Siregar Kakalia Putri Auralita Karenina Hakim Khoridatus Sulwa Kristi, Silvia Yolanda Maharani Kusumaningrum Maulida Zakia Mayasari, Dyta Silvia Megawati Megawati - Megawati Megawati Megawati Megawati Megawati Megawati Megawati Megawati Muhammad Fadhlan Dzikri Muna, Mochammad Choiril Nabil, Nisrina Hasna’ Ninda Kurniadi Nugroho Suhodo Nurul Khusna Permanadewi, Indrasukma Pradiza, Zefanya Pradnya, Irene Nindita Pramitha, Deva Aurelya Prasetyo, Ridwan Anung Prasojo, Dwi Pratama, Alfiansyah Aji Pratama, Muhammad Herdi Pratiwi, Kharisma Ardhani Nur Prima Astuti Handayani Rachmadi, Moch Faizal Radenrara Dewi Artanti Putri Radenrara Dewi Artanti Putri Radenrara Dewi Artanti Putri, Radenrara Dewi Artanti Ratna Dewi Kusumaningtyas Ria Wulansarie, Ria S., Syifa Azzahra Putri Sadan, Serlia Fitri Salsabila, Luvena Septiamurti , Anggun Serlia Fitri Sadan Suwandi, Luluk Arvi Cahyaning Syahputra, Adhika Bintang Tezara Cionita Waliyuddin Sammadikun Wara Dyah Pita Rengga Wati, Afifah Sagita Fitria Yessy Anna Pratiwi Zain, Faatin Nisriinaa Zefanya Pradiza