Teuku Beuna Bardant
Research Center for Chemistry, Indonesian Institute of Science, Komplek PUSPIPTEK Serpong Tangerang Banten 15413

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The Renewability Indicator and Cumulative Degree of Perfection for Gamboeng Tea; Part.2, Exergy Calculation of Tea Factory Bardant, Teuku Beuna; Haq, Muthia Syafika; Rahman Setiawan, Arief Ameir; Harianto, Sugeng; Waluyo, Joko; Mastur, Adhi Irianto; Lestari, Annisa Dieni; Sulaswatty, Anny; Sujarwo, Sujarwo; Rinaldi, Nino; Wiloso, Edi Iswanto
Jurnal Kimia Terapan Indonesia (Indonesian Journal of Applied Chemistry) Vol 20, No 2 (2018)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1146.866 KB) | DOI: 10.14203/jkti.v20i2.400

Abstract

Renewability Indicator (RI) and Cumulative Degree of Perfection (CDP) were used to observe sustainability of Gamboeng Tea. The assessment then compared with black tea process in Black Sea Region in Turkey from the previous study. Calculation of exergy for Gamboeng fresh tea leaf had already described in Part.1. Since the main process for both production was drying, then tropical humid climate in Gamboeng is the main challenge to increase efficiency, and thus, renewability. This second part described the significant improvement of renewability had applied in Gamboeng by using wood pellet in rotary pannier. Further recommended improvement were by installing better humidity detector and connected to the process control so the process can adapt the ambient change which the relative humidity can be varied from 65% and up to 92%.
Effect of Non Ionic Surfactant Addition to Cellulase Performance in High-Substrate-Loading-Hydrolysis of Palm Oil EFB and Water-Hyacinth Bardant, Teuku Beuna; Sudiyarmanto, Sudiyarmanto; Abimanyu, Haznan; Hanum, Aisha Kania
Indonesian Journal of Chemistry Vol 13, No 1 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2722.097 KB) | DOI: 10.22146/ijc.21326

Abstract

Enzymatic hydrolysis with high substrate loading of palm oil (Elaeis guineensis) empty fruit bunch (EFB) and water-hyacinth (Eichhornia crassipes) were investigated as a prior part of ethanol production from lignocelluloses. Commercial surfactant Span 85 and Tween 20 were used as cellulase performance enhancer in hydrolysis process with substrate loading above 20% (w/w). Cellulase performances were compared based on hydrolysis conversion. Hydrolysis conversions of EFB using cellulase with concentration 10 and 15 FPU/g-substrate was 38.55% and 88.80% respectively. Addition 2% (v/v) of Tween 20 to EFB hydrolysis reaction with cellulase concentration 10 FPU/g-substrate gave the conversion 87.30%. This addition enhance the cellulase performance up to 226.5% or similar with the performance of cellulase 15 FPU/g substrate. Addition 2% (v/v) of Span 85 to the similar reaction only enhances cellulase performance to 174.7%. Hydrolysis conversion of boiling-pretreated water-hyacinth and autoclave-pretreated water-hyacinth using cellulase 15 FPU/g-substrate was 45.84% and 52.29% respectively. Addition 2% (v/v) of Tween 20 and Span 85 to boiling-pretreated water-hyacinth hydrolysis with cellulase concentration 15 FPU/g-substrate enhance cellulase performance of 128.9% and 153.5% respectively. Addition 1% (v/v) of Tween 20 and Span 85 to the similar reaction with cellulase concentration 10 FPU/g-substrate gave conversions 51.00% and 53.79% respectively, or similar with conversion of autoclave-pretreated water-hyacinth hydrolysis with 15 FPU/g-substrate.
PRELIMINARY STUDIES FOR PRODUCING CRUDE LIPASE FROM TEMPE’S MOULD CULTIVATED IN RICE-HUSK-BASED SOLID MEDIA Bardant, Teuku Beuna; Sembiring, Kiky Corneliasari; Setiawan, Achmad Hanafi
Indonesian Journal of Chemistry Vol 7, No 2 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (191.752 KB) | DOI: 10.22146/ijc.21703

Abstract

The goal of these preliminary studies is to support Indonesian program for increasing palm oil added value through independent production technology based on Indonesian natural resources. Various palm oil derivatives could be synthesized enzymatically using lipase from microbes that available in Indonesia. Tempes mould is available in abundance in Indonesia and had already been proved for producing lipase. This paper provides information about producing crude lipase from Tempes mould cultivated in rice-husk-based solid media using palm oil as carbon source. Observed variables include solid media composition, optimum fermentation time, extraction and enriching process of crude lipase. The crude lipase was analyzed its hydrolysis activity on coconut oil and palm oil. The result of these preliminary studies shows that this production process is a simple and tough process and very potential to be developed.   Keywords: lipase, Tempes mould, palm oil, solid fermentation, rice husk
PENENTUAN KONDISI OPTIMUM FERMENTASI PADAT Trichoderma hamatum PADA MEDIA TUMBUH DEDAK PADI DALAM PRODUKSI SELULASE MENGGUNAKAN RESPONSE SURFACE METHODOLOGY Bardant, Teuku Beuna; Abimanyu, Haznan; Epriyani, Putri Lili
Jurnal Kimia Terapan Indonesia (Indonesian Journal of Applied Chemistry) Vol 15, No 2 (2013)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5932.591 KB) | DOI: 10.14203/jkti.v15i2.109

Abstract

Optimum condition for solidfermentation of Trichoderma hamatum inrice bran in order to produce cellulase hadbeen studied by using Response Surfacemethodology (RSM). Fermentationcondition variables that observed waswater to rice bran ratio, urea andinoculums additions cellulase activity inFPU/gds (gram of dry solid) became theonly dependent variable. The result ofempirical equation from this study wasproven to be valid within water to ricebran ratio 0,5 - 0,7, urea and inoculumsaddition where 2-3 % and 1-2% of ricebran weight respactively. Maximumcellulase activity that can be obtain withinthese ranges was 4.99 ± 0.92 FPU/gds.Keywords: Cellulase, Trichodermahamatum, rice bran, solid fermentation
PEMBUATAN BIOETANOL DARI LIMBAH KAYU SENGON (Falcataria moluccana (Miq.) Barneby & J.W. Grimes) DENGAN METODE SUBSTRAT KONSENTRASI TINGGI Winarni, Ina; Bardant, Teuku Beuna
Jurnal Penelitian Hasil Hutan Vol 35, No 4 (2017): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2017.35.4.231-242

Abstract

Industri penggergajian kayu baik skala kecil, menengah dan besar banyak beroperasi di Indonesia. Pada saat mengkonversi dolok menjadi kayu gergajian menghasilkan limbah kayu berupa potongan kecil dan serbuk gergaji. Potongan kecil kayu merupakan bahan berlignoselulosa yang berpotensi untuk menghasilkan etanol. Tulisan ini mempelajari kemungkinan pemanfaatan potongan kecil limbah kayu sengon untuk menghasilkan bioetanol. Pembuatan etanol, dilakukan dengan metode substrat konsentrasi tinggi dengan menghidrolisis substrat konsentrasi tinggi, yaitu 15, 25, dan 35% dan dua konsentrasi enzim (12,5 dan 15 FPU/g substrat). Hasil penelitian menunjukkan, perlakuan konsentrasi substrat 25% dan selulase 15 FPU/g substrat menghasilkan gula pereduksi tertinggi sebesar 248,3 mg/mL; sedangkan konsentrasi substrat 35% menghasilkan kadar etanol tertinggi sebesar 17,7% dengan rendemen sebesar 38,4%. Dapat disimpulkan bahwa metode substrat konsentrasi tinggi dapat menghasilkan kadar etanol yang tinggi pada limbah kayu sengon.