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All Journal Reaktor International Journal of Renewable Energy Development AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar ASEAN Journal of Chemical Engineering 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 Jurnal Abdimas
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 Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences Other

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Comparative Study on the Various Hydrolysis and Fermentation Methods of Chlorella vulgaris Biomass for the Production of Bioethanol Megawati, Megawati; Bahlawan, Zuhriyan Ash Shiddieqy; Damayanti, Astrilia; Putri, Radenrara Dewi Artanti; Triwibowo, Bayu; Prasetiawan, Haniif
International Journal of Renewable Energy Development Vol 11, No 2 (2022): May 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.41696

Abstract

One of the microalgae that can be potentially used to produce bioethanol is Chlorella vulgaris, as it is rich in carbohydrates. However, the carbohydrates in C. vulgaris cannot be converted directly into ethanol. This study aimed to investigate the chemical and enzymatic hydrolysis of C. vulgaris, which is subsequently followed by fermentation. The catalysts used in the chemical hydrolysis were hydrochloric acid, sodium hydroxide, and potassium hydroxide, while the enzymes used were the mixture of alpha-amylase + glucoamylase, alpha-amylase + cellulase, and alpha-amylase + glucoamylase + cellulase. The hydrolysate obtained from chemical hydrolysis was fermented through Separate Hydrolysis Fermentation (SHF), while the one from enzymatic hydrolysis was fermented through Simultaneous Saccharification and Fermentation (SSF), in which both processes used S. cerevisiae. After undergoing five hours of enzymatic hydrolysis (using alpha-amylase + glucoamylase), the maximum glucose concentration obtained was 9.24 ± 0.240 g/L or yield of 81.39%.  At the same time and conditions of the substrate on chemical hydrolysis, glucose concentration was obtained up to 9.23 + 0.218 g/L with a yield of 73.39% using 1 M hydrochloric acid. These results indicate that chemical hydrolysis is less effective compared to enzymatic hydrolysis. Furthermore, after 48 hours of fermentation, the ethanol produced from SHF and SSF fermentation methods were 4.42 and 4.67 g/L, respectively, implying that producing bioethanol using the SSF is more effective than the SHF method.
PENINGKATAN NILAI JUAL SINGKONG MENJADI KUE TINGGI PROTEIN DENGAN METODE FERMENTASI BAGI MASYARAKAT DESA SARIREJO Zuhriyan Ash Shiddieqy Bahlawan; Prima Astuti Handayani; Dhoni Hartanto; Ria Wulansarie
Jurnal Pengabdian Masyarakat Khatulistiwa Vol 5, No 1 (2022): APRIL
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpmk.v5i1.1329

Abstract

ABSTRACTThe majority of the population of Sarirejo Village, District Kaliwungu, work as farmers, and most of the land is planted with cassava plants. Harvested cassava is usually only sold directly to middlemen at low prices. It is necessary to process cassava into food products with high selling value. In this case, the community really needs knowledge and skills, so that the community becomes productive and can increase the income of the community in Sarirejo Village. The purpose of this community service activity is to provide training to the Dasawisma Group, Sarirejo Village, Kaliwungu District on processing cassava into high-protein steamed brownies made from modified cassava flour. The method used in the training is the brownie production process using cassava flour with modified fermentation. Modified cassava flour has better nutritional value. In addition, the production process also requires less labor, shorter time, and produces quality products. Activities include training, practice, and evaluation. Socialization material about the importance of processing cassava into food products that will increase the selling value of cassava and the practice of making steamed brownies to packaging products that are worth selling. Furthermore, mentoring was carried out to the dasawisma group independently so that they could produce steamed brownies and marketing them.Keywords: Cassava, modified flour, fermentation, brownies ABSTRAKMayoritas penduduk Desa Sarirejo Kecamatan Kaliwungu berprofesi sebagai petani dan sebagian besar lahannya ditanami dengan tanaman singkong. Singkong hasil panen biasanya hanya dijual langsung kepada tengkulak dengan harga murah. Perlu adanya pengolahan singkong menjadi produk makanan dengan nilai yang lebih ekonomis. Untuk pengembangan nilai bahan ini, masyarakat sangat membutuhkan pengetahuan dan keterampilan, agar menjadi lebih produktif dan dapat menambah pendapatan masyarakat di Desa Sarirejo. Tujuan kegiatan pengabdian kepada masyarakat ini adalah memberikan pelatihan kepada Kelompok dasawisma Desa Sarirejo Kecamatan Kaliwungu tentang pengolahan singkong menjadi kue brownies kukus tinggi protein berbahan tepung singkong termodifikasi. Metode yang digunakan dalam pelatihan dengan proses produksi brownies menggunakan tepung singkong dengan modifikasi fermentasi. Tepung singkong yang telah dimodifikasi memiliki nilai nutrisi yang lebih baik. Selain itu, proses produksi hanya memerlukan tenaga kerja yang relatif sedikit, waktu pemrosesan yang lebih pendek dan menghasilkan produk yang berkualitas. Kegiatan meliputi pelatihan, praktik, dan evaluasi. Materi sosialisasi mengenai pentingnya pengolahan singkong menjadi produk makanan yang akan meningkatkan nilai jual dari singkong dan praktek pembuatan brownies kukus sampai dengan pengemasan produk layak jual. Selanjutnya dilakukan pendampingan sampai kelompok dasawisma secara mandiri sehingga dapat menghasilkan produk brownies kukus dan pemasarannya.Kata Kunci: Singkong, modifikasi tepung, fermentasi, brownies
PELATIHAN APLIKASI TURNITIN DAN MENDELEY SOFTWARE BAGI MAHASISWA UNNES DALAM RANGKA PENINGKAATAN KOMPETENSI Dhoni Hartanto; Wara Dyah Pita Rengga; Zuhriyan Ash Shiddieqy Bahlawan; Irene Nindita Pradnya; Waliyuddin Sammadikun; Akhmad Sutrisno
AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Vol. 3 No. 1 (2019): Amaliah: Jurnal Pengabdian Kepada Masyarakat
Publisher : LP2M UMN AL WASHLIYAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/ajpkm.v3i1.239

Abstract

Di dalam dunia akademik, akademisi tidak pernah lepas dari budaya menulis artikel ilmiah. Baik penulisan artikel untuk mengikuti suatu lomba, memenuhi tugas kuliah, menulis laporan penelitian hingga artikel untuk dipublikasikan pada jurnal baik nasional maupun internasional. Permasalahan utama yang dialami penulis serta mitra dalam menuliskan artikel ilmiah adalah masalah orisinalitas, praktik plagiarisme serta penyusunan refrensi. Plagiarisme merupakan salah satu tindak pidana yang mengambil, menerbitkan atau menyatakan sebagai milik sendiri dari orang lain, dalam hal ini hasil dari suatu pemikiran sang pencipta. Praktik plagiarisme dalam penulisan tugas, karya ilmiah, skripsi maupun disertasi masih banyak kita jumpai di kalangan akademisi, baik mahasiswa, guru maupun dosen. Sebelum kegiatan sosialisasi, dilakukan observasi untuk mengetahui tingkat pengetahuan yang dimiliki oleh para peserta tentang penulisan artikel terutama mengenai plagiasi dan penyusunan refrensi. Metode yang dilakukan adalah tanya jawab. Hampir 90% peserta belum mengetahui cara menggunakan Turnitin dan Mendeley dalam penulisan jurnal. Hasil kuisioner mahasiswa sangat puas dengan adanya pelatihan Turnitin dan Mendeley.
Immobilization of Saccharomyces cerevisiae in Jackfruit (Artocarpus heterophyllus) Seed Fiber for Bioethanol Production Zuhriyan Ash Shiddieqy Bahlawan; Megawati Megawati; Astrilia Damayanti; Radenrara Dewi Artanti Putri; Ayu Nur Permadhini; Khoridatus Sulwa; Fahreza Pracenda Felicitia; Anggun Septiamurti
ASEAN Journal of Chemical Engineering Vol 22, No 1 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.69781

Abstract

Bioethanol is alternative renewable energy typically obtained from glucose through a fermentation process using Saccharomyces cerevisiae. In the bioethanol fermentation process using yeast, there are several inhibiting factors, such as a high concentration of substrate, ethanol as the product, and nutrients. The present study aimed to investigate the effect of fermentation time (12- 72 hours), immobilized carrier size (sizes of 0.5 cm3 , 1 cm3 , and 1.5 cm3 ), and medium pH (3.0, 4.0, and 5.0) on the ethanol fermentation process using immobilized yeast in jackfruit (Artocarpus heterophyllus) seeds and subsequently to compare its performance with a free cell system. The highest ethanol concentration (89.15 g/L) with a yield of 96.92% was obtained by immobilizing yeast in jackfruit seed at a fermentation time of 72 hours, carrier size of 0.5 cm3 , and medium pH of 5.0. When compared to the free cell system fermentation under identical operating conditions, immobilized yeast in jackfruit seed obtained 1.41 times higher ethanol concentration. Jackfruit seed also led to a higher ethanol concentration compared to other S. cerevisiae carriers. Altogether, our findings imply that jackfruit seed has great potential as a carrier of S. cerevisiae in the process of fermenting glucose into ethanol
Hidrolisis Limbah Kulit Pisang (Musa acuminata) Menggunakan Katalis Asam untuk Produksi Bioetanol Zuhriyan Ash shiddieqy Bahlawan; Megawati Megawati; Bayu Triwibowo; Alfiansyah Aji Pratama; Zefanya Pradiza; Anggun Septiamurti
REACTOR: Journal of Research on Chemistry and Engineering Vol 3, No 1 (2022): Published in June 2022
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v3i1.45

Abstract

Banana is one of the fruits that can thrive in Indonesia. This plant is often found in tropical soils with slightly moist soil conditions. However, banana peels are underutilized and are only disposed of as agricultural waste. On the other hand, the carbohydrate content of banana peels is still quite high, reaching 12.2% so it can be used as raw material for making bioethanol. Carbohydrates in the substrate cannot be directly converted into bioethanol but need to be pretreated first to break down polysaccharides into monosaccharides. In this research, the pretreatment process of carbohydrate hydrolysis from banana peels into reducing sugars is studied. From the studies, the reducing sugar concentration was obtained with banana peels substrate concentration of 20 g/L, 5 M of sulfuric acid concentration, and an optimum hydrolysis time of 70 minutes with the obtained reducing sugar reach 16.82 g/L. Reducing sugar can be converted into bioethanol by fermentation process with S. cerevisiae yeast. It is hoped that these studies can provide an initial impact on the development of alternative energy based on biomass and utilization of banana peel waste.
Implementasi Digital Marketing dalam Meningkatkan Strategi Pemasaran Produk UMKM di Kelurahan Mangunharjo Kota Semarang Zuhriyan Ash Shiddieqy Bahlawan; Megawati Megawati; Bayu Triwibowo; Haniif Prasetiawan; Dwi Prasojo; Fauzan Amrullah; Dyta Silvia Mayasari
Journal of Industrial Community Empowerment Vol 2, No 2 (2023): Published in October 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v2i2.210

Abstract

Micro, Small and Medium Enterprises (MSMEs) in Indonesia are the largest business units that support the country's economy. In Mangunharjo District, Tugu District, Semarang City, there are several groups of MSMEs which are mainly engaged in the food processing industry. However, MSME owners face various challenges, such as a lack of marketing methods. As a result, many MSMEs only produce food products when there is an order and rely on consignment at the nearest shop for a limited period of time. This problem requires a solution that can overcome the concerns of MSME owners, one of which is by changing marketing methods. Currently, MSMEs in the regions only rely on traditional marketing methods. By holding training activities for the public about the benefits of digital marketing, it is hoped that MSME owners can change their perspective and adopt more modern marketing methods. Through evaluations carried out after training, the MSME group has started to utilize digital platforms to market their products. The results show that MSMEs are starting to get used to digital marketing to increase sales value.
Comparative Study on the Various Hydrolysis and Fermentation Methods of Chlorella vulgaris Biomass for the Production of Bioethanol Megawati Megawati; Zuhriyan Ash Shiddieqy Bahlawan; Astrilia Damayanti; Radenrara Dewi Artanti Putri; Bayu Triwibowo; Haniif Prasetiawan
International Journal of Renewable Energy Development Vol 11, No 2 (2022): May 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.41696

Abstract

One of the microalgae that can be potentially used to produce bioethanol is Chlorella vulgaris, as it is rich in carbohydrates. However, the carbohydrates in C. vulgaris cannot be converted directly into ethanol. This study aimed to investigate the chemical and enzymatic hydrolysis of C. vulgaris, which is subsequently followed by fermentation. The catalysts used in the chemical hydrolysis were hydrochloric acid, sodium hydroxide, and potassium hydroxide, while the enzymes used were the mixture of alpha-amylase + glucoamylase, alpha-amylase + cellulase, and alpha-amylase + glucoamylase + cellulase. The hydrolysate obtained from chemical hydrolysis was fermented through Separate Hydrolysis Fermentation (SHF), while the one from enzymatic hydrolysis was fermented through Simultaneous Saccharification and Fermentation (SSF), in which both processes used S. cerevisiae. After undergoing five hours of enzymatic hydrolysis (using alpha-amylase + glucoamylase), the maximum glucose concentration obtained was 9.24 ± 0.240 g/L or yield of 81.39%.  At the same time and conditions of the substrate on chemical hydrolysis, glucose concentration was obtained up to 9.23 + 0.218 g/L with a yield of 73.39% using 1 M hydrochloric acid. These results indicate that chemical hydrolysis is less effective compared to enzymatic hydrolysis. Furthermore, after 48 hours of fermentation, the ethanol produced from SHF and SSF fermentation methods were 4.42 and 4.67 g/L, respectively, implying that producing bioethanol using the SSF is more effective than the SHF method.
Diversifikasi Olahan Susu Sapi Segar Menjadi Produk Kefir untuk Minuman Probiotik dan Masker Wajah di Kelurahan Plalangan Gunungpati Semarang Prasetiawan, Haniif; Triwibowo, Bayu; Kusumaningtyas, Ratna Dewi; Bahlawan, Zuhriyan Ash Shiddieqy; Widyastuti, Catur Rini
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.
Pendampingan Pembuatan Biobriket Dari Pemanfaatan Sumber Daya Lokal Limbah Sabut Kelapa di Desa Kemujan Karimunjawa Kusumaningrum, Maharani; Pradnya, Irene Nindita; Wulansarie, Ria; Zakia, Maulida; Bahlawan, Zuhriyan Ash Shiddieqy; Imani, Nadya Alfa Cahaya; Permanadewi, Indrasukma; Salsabila, Luvena; Suwandi, Luluk Arvi Cahyaning; Wati, Afifah Sagita Fitria; Syahputra, Adhika Bintang; Fandika, Putri Maharani Adinda; Pramitha, Deva Aurelya; Pratama, Muhammad Herdi; Diana, Savira Rahma; Sadan, Serlia Fitri; Imanullah, Kautsar Taqi
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 1 (2024): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v5i1.360

Abstract

Abstrak Desa Kemujan, yang terletak di Kecamatan Karimunjawa, memiliki potensi besar dalam memanfaatkan limbah sabut kelapa sebagai bahan baku biobriket. Dengan luas wilayah 162,1 km² dan populasi 3.391 jiwa, desa ini memiliki keberagaman budaya dan suku yang kaya. Limbah sabut kelapa yang terdapat di Desa Kemujan pada saat ini belum dimanfaatkan secara optimal. Hal ini terjadi karena minimnya kesadaran dan pengetahuan masyarakat sekitar untuk mengolah sabut kelapa tersebut. Sabut kelapa merupakan biomassa yang dapat dimanfaatkan sebagai bahan alami pembuatan biobriket. Sehingga pengabdian melalui pendampingan dan pelatihan pembuatan biobriket untuk memanfaatkan sumber daya lokal sabut kelapa di Desa Kemujan Karimunjawa perlu diselenggarakan. Metode pelaksanaan yang dilakukan dalam pengabdian ini adalah sosialisasi terkait biobriket dan pelatihan pembuatan biobriket dari sabut kelapa secara langsung. Hasil yang didapat dari pengabdian ini adalah meningkatkan nilai guna dan nilai ekonomis sabut kelapa, berkontribusi pada pengembangan UMKM di Desa Kemujan, serta meningkatkan kesadaran dan pengetahuan masyarakat terkait pemanfaatan limbah sabut kelapa serta proses pembuatan biobriket dari sabut kelapa. Keywords: Biobriquettes; Coconut Husk; Waste
Optimization of Rice Bran Oil Bleaching via Carotenoid Adsorption onto Activated Carbon using Response Surface Methodology (RSM) Damayanti, Astrilia -; Harianingsih, Harianingsih; Bahlawan, zuhriyan Ash Shiddieqy; Dillah, Shohib Qomad; Dewi, Yasinda Verrel Dinara Shinka; Kristi, Silvia Yolanda; Prasetyo, Ridwan Anung
Reaktor Volume 23 No.2 August 2023
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.23.2.53-61

Abstract

Rice bran oil (RBO) is a by-product of rice processing with a good fatty acid profile and high oxidative stability. This study aims to optimize the bleaching stage of the rice bran oil refining process to determine the minimum levels of carotenoids in RBO by using the Response Surface Methodology (RSM). This research used the Central Composite Design (CCD) experimental design with three variables: bleaching temperature (50, 80, 1100C), bleaching time (20, 40, 60 minutes), and activated carbon concentration (0.4, 0.8, 1.2%). As a result, the model was enhanced to explain the correlation of each variable and the different data variations. This study employed the Derringer method to determine the most optimal variable variation that produces the lowest carotene levels. This study found that the optimal carotene level was 4.87 mg/kg with an activated carbon concentration of 1.18%, temperature of 500C, and time of 53.155 minutes.
Co-Authors Abdurrafi, Faishol Achmad Wikandaru Akhmad Sutrisno Alfiansyah Aji Pratama Amrullah, Fauzan Anggun Septiamurti Anggun Septiamurti Astrilia Damayanti Astrilia Damayanti Ayu Nur Permadhini Bayu Triwibowo Bayu Triwibowo Catur Rini Widyastuti, Catur Rini Daffa Nur Muhammad Damayanti, Astrilia - 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 Handoko, Pratama Senapati Bagus Haniif Prasetiawan Harianingsih, Harianingsih Hutomo , Gayuh Aditya Hutomo, Gayuh Aditya Ichwan, Rizky Imani, Nadya Alfa Cahaya Imanullah, Kautsar Taqi Irene Nindita Pradnya Jannah, Reni Ainun Kakalia Putri Auralita Khoridatus Sulwa Kristi, Silvia Yolanda Maharani Kusumaningrum Maulida Zakia Maulida Zakia Mayasari, Dyta Silvia Megawati Megawati - Megawati Megawati Megawati Megawati Megawati Megawati Megawati Megawati Muna, Mochammad Choiril Nabil, Nisrina Hasna’ 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 Suwandi, Luluk Arvi Cahyaning Syahputra, Adhika Bintang Waliyuddin Sammadikun Wara Dyah Pita Rengga Wati, Afifah Sagita Fitria Zain, Faatin Nisriinaa Zefanya Pradiza