Dikdik Mulyadi
Universitas Muhammadiyah Sukabumi

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IDENTIFIKASI POTENSI ENZIM LIPASE DAN SELULASE PADA SAMPAH KULIT BUAH HASIL FERMENTASI Sumarlin, La Ode; Mulyadi, Dikdik; Suryatna, .; Asmara, Yoga
Jurnal Ilmu Pertanian Indonesia Vol. 18 No. 3 (2013): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Fermentation is one of bioconversion to produce profitable anaerobic microbes and to produce various enzymes. Lipases and cellulases are widely used enzymes so far. Cellulases play an important role in bioconversion of organic waste cellulosic materials to glucose, single cell proteins, animal feed, and ethanol. Lipases can also degrade fatty ester bond. Therefore, both enzymes are potential to be used in industry as well as in households. Fermentation of fruit peel waste is an attempt to produce cellulase and lipase that can be carried out in a simple way. Cellulase as says was performed using DNS (3.5-dinitrosalicylic acid) and acid-base titration for analysis of lipase using cooking oil as the substrate. The results showed that the highest cellulase activity was obtained from watermelon rind mixed with citrus fruit peel of 0.036 U/mL, and mixed of banana peel and citrus fruit, which was 0.035 U/mL. The optimum lipase activity was at 30 oC, pH 7, and reaction time of 60 minutes. The highest lipase activity (1.36 U/mL) was obtained from mixture of watermelon and orange rind. Thus, the fruit peel waste is potential to produce cellulase and lipase by fermentation .
IbM KECAMATAN SUKARAJA MENUJU DESA MANDIRI ENERGI [IbM SUKARAJA DISTRICTS TOWARDS AN ENERGY INDEPENDENT VILLAGE] Mulyadi, Dikdik; Y, Lela Mukmilah
Jurnal Sinergitas PKM & CSR Vol 2, No 1 (2017): JURNAL SINERGITAS PKM & CSR
Publisher : Universitas Pelita Harapan

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Abstract

 Community service programs conducted in Sukamekar and Cisarua villages in Kecamatan Sukaraja has a theme "IbM Sukaraja Districts Towards an Energy Independent Village". The expected objective of the science and technology program for this community is to make the existing community in Sukaraja Sukabumi districts generally independent in the field of energy and particularly the villages of Sukamekar and Cisarua of Sukaraja Disticts. The method used by some stage of the electoral groups in each village based on the potential of cow dung waste, socialization biogas to a selected group, training and implementation of biogas installation and monitoring and evaluation of all activities conducted. The result of monitoring and evaluation of this activity shows that cow dung in Sukamekar and Cisarua villages of Sukaraja districts can be utilized to produce biogas that  used for cooking purposes IbM implementation provides some benefits in the field of economic, social, security and mastery of technology. Keywords: IbM, biogas, energy independent village, monitoring and evaluation
EFEKTIVITAS PEMANFAATAN SERBUK GERGAJI DAN LIMBAH MEDIA TANAM JAMUR (BAGLOG) SEBAGAI BAHAN BAKU PEMBUATAN BIOGAS Mulyadi, Dikdik; Yuningsih, Lela Mukmilah; Kusumawati, Desi
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 2, No. 1, Mei 2016
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Syarif Hidayatullah State Islamic Uni

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.628 KB) | DOI: 10.15408/jkv.v2i1.3100

Abstract

Biogas is  one of energy   that can be produced by anaerobic fermentation of the organic compounds. The objective of this study was to determine the effectiveness of the utilization of waste of media  mushroom growth (baglog) with sawdust as raw material for biogas with  cow dung  activators. The study was conducted through anaerobic fermentation of the samples containing waste baglog (sample 1) and sawdust (sample 2), with the addition of cow manure activator to each sample. Both of these samples do anaerobic fermentation for 32 days, then measuring the volume of biogas every 4 days for 32 days. Methane content  in  samples 1 and 2 measured by  using gas chromatography. To see the effect of the addition of activators cow dung biogas volume measurement was  carried out with  cow dung without addition baglog waste and sawdust. The process of degradation baglog and sawdust with an activator of cow dung could be observed  in  some of the parameters through  total solids (TS), total volatile solids (TVS), volatile fatty acids (VFA), the degree of acidity (pH), and C/N ratio. The results showed that effectiveness of sample 1 resulted in the everage of total volume biogas 28% higher than  sample 2. The content of methane in  sample 1  and sampel 2  was 54% %, and 0.21% respectively. The fermentation process biogas production in this experiment  was carried out  at pH 7, with a value of TS, TVS and VFA showed a decrease  trend after the fermentation process,  C/N ratiowas  lower than the baglog waste sawdust until day 32 retention time. Keywords: Sawdust, baglog waste, biogas, fermentation, methane DOI : http://dx.doi.org/10.15408/jkv.v2i1.3100