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All Journal Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Indonesian Journal of Biotechnology Makara Journal of Technology
Lischer, Kenny
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Indonesia, Depok 16424, West Java, Indonesia; Research Center Of Biomedical Engineering, Universitas Indonesia, Depok 16424, West Java, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health

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PEMANFAATAN LEBAH DAN PENGELOLAAN SAMPAH UNTUK EKONOMI RUMAH TANGGA YANG BERKELANJUTAN Afiatry Putrika; Deti Purwanti; Adra Amalia Nur Ahlina; Nadhifa Tazkia Ramadhani; Ratna Yuniati; Muhamad Sahlan; Kenny Lischer; Apriliana Cahya Khayrani; Amy Yayuk Sri Rahayu; Nidaan Khafian; Astari Dwiranti
Dharmakarya Vol 10, No 3 (2021): September, 2021
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/dharmakarya.v10i3.32506

Abstract

Lebah merupakan hewan dari kelas Insecta yang menghasilkan produk kaya manfaat, diantaranya madu, propolis, dan bee pollen. Lebah, khususnya yang tanpa sengat, dapat dibudidayakan oleh masyarakat perkotaan karena relatif aman. Tim Pengabdian Masyarakat Multidisiplin Universitas Indonesia, yang terdiri dari Fakultas Matematika dan Ilmu Pengetahuan Alam, Fakultas Teknik, dan Fakultas Ilmu Administrasi bekerjasama dengan komunitas “3bee” telah melaksanakan serial workshop secara daring dengan topik pemanfaatan lebah. Selain itu, tim pengabdi dengan “holistika institute” juga mengajak masyarakat untuk memanfaatkan sampah rumah tangga agar dapat diolah kembali menjadi produk yang dapat menghidupkan perekonomian rumah tangga. Serial workshop terdiri dari empat seri, masing-masing terdiri dari dua sesi. Topik yang disampaikan meliputi pengenalan lebah dan urban bee; tanaman pakan lebah dan produk lebah; pangan sehat dari lebah; pengolahan sampah organik dan anorganik; serta pemasaran dan kualitas pelayanan. Workshop diselenggarakan selama 4 Pekan mulai tanggal 10 Oktober hingga 7 November 2020. Selain pemaparan narasumber, terdapat pre-test, post-test, dan evaluasi kegiatan dari peserta pada tiap seri. Peserta workshop berjumlah 171 orang yang berasal dari berbagai wilayah di Indonesia. Sebagian besar berasal dari kalangan akademisi, komunitas penggiat lebah, serta pegawai dinas lingkungan dan kehutanan. Berdasarkan hasil evaluasi, sebagian besar peserta merasa sangat puas (rentang kepuasan 4,21-5,00) dengan workshop yang terselenggara dan berencana mengimplementasikan pengetahuan yang diperoleh dari workshop ini (87%). Program pengabdian masyarakat multidisiplin ini dapat diduplikasi pada program lain sehingga penyampaian materi bersifat komprehensif. Program ini diharapkan dapat terus dikembangkan melalui program pendampingan sehingga lebah dan sampah dapat dimanfaatkan untuk meningkatkan ekonomi rumah tangga berkelanjutan di Indonesia.
Purification Simulation With Vapor Permeation and Distillation-Adsorption In Bioethanol Plant Gozan, Misri; Setiawan, Mia Sari; Lischer, Kenny
Makara Journal of Technology Vol. 21, No. 1
Publisher : UI Scholars Hub

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Abstract

High purity of Bioethanol is required in biofuel mixing with gasoline (EXX). In bioethanol production line, the azeotropic property of ethanol-water becomes the barrier for purification process. This study examined two bioethanol separation processes by support of simulation tools, Superpro Designer 9.0 software. Ethanol purity and a low costeconomical process were the major considerations. Purification method of vapor permeation membrane technology was compared with distillation-adsorption method. Data from previous lab experiments and some literatures were used. The results showed that distillation-adsorption method is more economical compared to vapor permeation technology. Payback period of the simulation is 3.9 years and 4.3 years to distillation adsorption and vapor permeation respectively with each IRR value is 20.23% and 17.89%. Initial investment value of vapor permeation is 9.6% higher than distillation method. Significant difference observed in operating costs, since more units involved in vapor permeation require more labors to operate.
Identification of Thermophilic Bacteria from Tirta Lebak Buana Hot Spring in Serang, Banten, Indonesia Lischer, Kenny
Makara Journal of Technology Vol. 25, No. 3
Publisher : UI Scholars Hub

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Abstract

Since Taq polymerase was first explored and identified from thermophilic bacteria, these bacteria have become well-known sources of thermostable enzymes. New thermophilic bacteria have been investigated to broaden biodiversity and translation research. Studies have shown interests in Indonesia because of thermophilic bacteria found in hot springs. This country is traversed by the ring of fire and has more than 70 volcanoes, resulting in the wide distribution of hot springs across the country. Although many reports have been performed, studies have yet to explore thermophilic bacteria in Tirta Lebak Buana hot springs, Java Island, Indonesia. This research was the first to examine thermophilic bacteria in Tirta Lebak Buana hot spring. Two samples from two different sampling sites were obtained and analyzed through 16srRNA analysis (sampling sites A and B). Measurements indicated that the temperature (50 °C) in sampling site A was higher than that in sampling site B (40 °C), but they had similar pH (7.0). Polymerase chain reaction (PCR) showed that the 16srRNA of the specimen was around 1465 bp. The analysis of the 16srRNA sequence revealed that the obtained bacteria have a similar sequence and close relationship with Bacillus subtilis subsp. stercoris strain N12.
Easy extraction of Ganoderma boninense liquid sample using portable on‐chip device Adella Josephin; Yudan Whulanza; Siti Fauziyah Rahman; Kenny Lischer; Muhammad Imam Surya; Irfan Martiansyah; Wiguna Rahman; Uda Hashim
Indonesian Journal of Biotechnology Vol 29, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijbiotech.83645

Abstract

Detecting Ganoderma boninense in Indonesia is crucial for effectively controlling and mitigating the spread of basal stem disease in oil palm fields. While there is ongoing development of tolerant plants, no such plant has been successfully created yet. Consequently, researchers are actively studying detection methods for Ganoderma boninense. One established and highly accurate approach is the use of polymerase chain reaction (PCR) techniques for molecular detection. However, this method requires time‐consuming sample preparation, which can pose challenges in plantation settings. To address this problem, a portable lab‐on‐chip device has been introduced. This technology enables easy and automatic DNA retrieval from liquid samples by absorbing lysed DNA using magnetic beads. An efficient mechanism for manipulating the magnetic bead within the semiconductor has been successfully implemented. The extraction process typically takes around 15 minutes using a modified methodology on the chip device approach. The chip facilitates the retrieval of two samples with a capacity of 120 µL for each sample. The PCR method was utilized to validate the equivalence of the lab‐on‐chip device extraction to the standard extraction method. This represents a promising alternative for expedited and simplified detection of Ganoderma boninense in field conditions.
PELATIHAN BUDIDAYA ALPUKAT DENGAN METODE SAMBUNG PUCUK KEPADA PETANI ALPUKAT DESA IWUL, BOGOR Lischer, Kenny; Khayrani, Apriliana Cahya; Nurhayati, Retno Wahyu; Laksono, Auzan Luthfi; Izza, Nadira Nurul
DHARMAKARYA: Jurnal Aplikasi Ipteks untuk Masyarakat Vol 13, No 3 (2024): September : 2024
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/dharmakarya.v13i3.44885

Abstract

Avocado is one of the important commodities as food and as a source of nutrition worldwide. Previous research shows that avocado has antioxidants that benefit for health, such as vitamins A, C, and E, potassium, and unsaturated fat. So, avocados have various health activities such as preventing stroke, reducing cholesterol levels, skin moisturizers, and functional foods for babies. Therefore, a lot of people want to farm avocados by themselves. One of the groups of farmers with experience comes from Desa Iwul, Bogor. The avocado farm is one of their primary incomes. However, the activity is interrupted due to the planning of land construction. Groups of farmers from Desa Iwul, Bogor might face loss of their sources of income. To overcome this problem, groups of community development from Bioprocess Engineering, Faculty of Engineering Universitas Indonesia tried to transfer knowledge about avocado cultivation techniques using grafting methods. The activities were done for 2 months as a form of training for trainers of selected avocado farmers and training from trained avocado farmers to other avocado farmers and society. The results show that the grafting method has successfully been done not only by trained avocado farmers but to untrained avocado farmers and society. By this activity, the success rate of the grafting method has been increased.Avocado is one of the important commodities as food and as a source of nutrition worldwide. Previous research shows that avocado has antioxidants that benefit for health, such as vitamins A, C, and E, potassium, and unsaturated fat. So, avocados have various health activities such as preventing stroke, reducing cholesterol levels, skin moisturizers, and functional foods for babies. Therefore, a lot of people want to farm avocados by themselves. One of the groups of farmers with experience comes from Desa Iwul, Bogor. The avocado farm is one of their primary incomes. However, the activity is interrupted due to the planning of land construction. Groups of farmers from Desa Iwul, Bogor might face loss of their sources of income. To overcome this problem, groups of community development from Bioprocess Engineering, Faculty of Engineering Universitas Indonesia tried to transfer knowledge about avocado cultivation techniques using grafting methods. The activities were done for 2 months as a form of training for trainers of selected avocado farmers and training from trained avocado farmers to other avocado farmers and society. The results show that the grafting method has successfully been done not only by trained avocado farmers but to untrained avocado farmers and society. By this activity, the success rate of the grafting method has been increased. 
Co-Authors Adella Josephin Adra Amalia Nur Ahlina Deti Purwanti Dwiranti, Astari Irfan Martiansyah Izza, Nadira Nurul Khayrani, Apriliana Cahya Laksono, Auzan Luthfi Misri Gozan Muhammad Imam Surya Nadhifa Tazkia Ramadhani Nidaan Khafian Nurhayati, Retno Wahyu Putrika, Afiatry Ratna Yuniati SAHLAN, MUHAMAD Setiawan, Mia Sari Siti Fauziyah Rahman Sri Rahayu, Amy Yayuk Uda Hashim Wiguna Rahman Yudan Whulanza