scholarly journals Effect of Non Ionic Surfactant Addition to Cellulase Performance in High-Substrate-Loading-Hydrolysis of Palm Oil EFB and Water-Hyacinth

2013 ◽  
Vol 13 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Teuku Beuna Bardant ◽  
Sudiyarmanto Sudiyarmanto ◽  
Haznan Abimanyu ◽  
Aisha Kania Hanum
Keyword(s):  
Palm Oil ◽  
Water Hyacinth ◽  
Elaeis Guineensis ◽  
Tween 20 ◽  
Ionic Surfactant ◽  
Similar Reaction ◽  
High Substrate ◽  
Hydrolysis Process ◽  
Hydrolysis Of ◽  
Substrate Addition

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.

scholarly journals Using poly(N-Vinylcaprolactam) to Improve the Enzymatic Hydrolysis Efficiency of Phenylsulfonic Acid-Pretreated Bamboo

2021 ◽  
Vol 9 ◽  
Author(s):  
Xianqing Lv ◽  
Guangxu Yang ◽  
Zhenggang Gong ◽  
Xin Cheng ◽  
Li Shuai ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Hydrophobic Interactions ◽  
Practical Method ◽  
Tween 20 ◽  
Ionic Surfactant ◽  
Enzymatic Conversion ◽  
Chemical Pretreatment ◽  
Cellulose Accessibility ◽  
Negative Effect ◽  
Hydrolysis Of

Chemical pretreatment followed by enzymatic hydrolysis has been regarded as a viable way to produce fermentable sugars. Phenylsulfonic acid (PSA) pretreatment could efficiently fractionate the non-cellulosic components (hemicelluloses and lignin) from bamboo and result in increased cellulose accessibility that was 10 times that of untreated bamboo. However, deposited lignin could trigger non-productive adsorption to enzymes, which therefore significantly decreased the enzymatic hydrolysis efficiency of PSA-pretreated bamboo substrates. Herein, poly(N-vinylcaprolactam) (PNVCL), a non-ionic surfactant, was developed as a novel additive for overcoming the non-productive adsorption of lignin during enzymatic hydrolysis. PNVCL was found to be not only more effective than those of commonly used lignosulfonate and polyvinyl alcohol for overcoming the negative effect of lignin, but also comparable to the robust Tween 20 and bovine serum albumin additives. A PNVCL loading at 1.2 g/L during enzymatic hydrolysis of PSA pretreated bamboo substrate could achieve an 80% cellulosic enzymatic conversion and meanwhile reduce the cellulase loading by three times as compared to that without additive. Mechanistic investigations indicated that PNVCL could block lignin residues through hydrophobic interactions and the resultant PNVCL coating resisted the adsorption of cellulase via electrostatic repulsion and/or hydration. This practical method can improve the lignocellulosic enzymatic hydrolysis efficiency and thereby increase the productivity and profitability of biorefinery.

Treatment of Palm Oil Mill Effluent (POME) Supernatants Using Aerobic Attached–Growth System: Trickling Filter as a Case Study

2012 ◽  
Author(s):  
Ahmad Zuhairi Abdullah ◽  
Mohamad Hakimi Ibrahim ◽  
Mohd. Omar Ab. Kadir
Keyword(s):  
Palm Oil ◽  
Colloidal Particles ◽  
Oxygen Demand ◽  
Cod Removal ◽  
Palm Oil Mill Effluent ◽  
Trickling Filter ◽  
Biomass Hydrolysis ◽  
Removal Efficiencies ◽  
Palm Oil Mill ◽  
Hydrolysis Of

Kertas kerja ini membincangkan tentang kecekapan penuras cucur dalam merawat supernatan kumbahan kilang kelapa sawit (POME). Supernatan POME diperoleh menerusi dua jenis perawatan. Dalam perawatan 1, pengendapan graviti digunakan untuk menyingkir pepejal boleh mendak. Perawatan 2 digunakan untuk menyingkir pepejal boleh mendak dan gumpalan partikal dengan menggunakan 350 ppm alum. Influen dialurkan secara titisan pada biojisim yang terlekat pada penyokong pepejal rawak PVC setinggi 1 m. Penuras cucur berupaya menyingkir lebih daripada 90.0% dari keperluan oksigen biologi (BOD) dan keperluan oksigen kimia (COD) di bawah 1 m3/m2–hari. Pada 2.53 m3/m2–hari, influen dengan Perawatan 1 menghasilkan kecekapan penyingkiran COD sebanyak 40.3%, berbanding 83.1% bila Perawatan 2 digunakan. Perkara ini berlaku berikutan penyingkiran bahan organik tak boleh resap semasa Perawatan 2. Kecekapan penyingkiran menurun dengan meningkatnya bebanan hidraulik kerana wujudnya kelemahan dalam hidrolisis bahan tak boleh resap kepada substratum larut. Dengan edaran semula (α=1), penyingkiran BOD dan COD yang lebih tinggi dicapai di bawah 7 m3/m2–hari. Pencapaian ini disebabkan oleh bebanan organik yang lebih rendah serta pergedaran semula enzim dan biojisim yang aktif kepada sistem. Perawatan 2 menghasilkan enap cemar yang lebih tinggi kerana penukaran substratum boleh larut kepada biojisim tak boleh larut. Hidrolisis bahan organik tak boleh resap didapati berlaku secara aktif pada bahagian atas penuras cucur sementara bahagian bawahnya cenderung mengoksidakan substratum organik. Kata kunci: POME, turas cucur, bahan organik bolehresap, penggumpalan, alir semula This paper discusses the efficiency of a trickling filter to treat Palm Oil Mill Effluent (POME) supernatants. POME supernatants were obtained via two treatments. In Treatment 1, gravity sedimentation was used to remove settleable solids. In Treatment 2, both settleable solids and colloidal particles were removed using 350 ppm of alum. The influents were allowed to trickle over biomass attached to 1 m high random PVC solid support. Below 1 m3/m2–day, the filter demonstrated Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) removal efficiencies of more than 90.0%. At 2.53 m3/m2–day, the influent with Treatment 1 gave a COD removal efficiency of 40.3%, but increased to 83.1% when the influent with Treatment 2 was used. This was ascribed to the removal of non–diffusible organics during Treatment 2. The removal efficiencies decreased with an increase in hydraulic loading due to limitations in the hydrolysis of non–diffusibles into soluble substrates. With recirculation (α=1), higher BOD and COD removals were achieved below 7.0 m3/m2–day, attributed to lower organic loading and the recycling of active enzyme and biomass to the system. The influent with Treatment 2 demonstrated higher sludge production due to higher conversion of soluble substrates into insoluble biomass. Hydrolysis of non–diffusible organics mainly took place at upper reaches of the filter column while lower reaches were involved in oxidizing the organic subtrates. Key words: POME, trickling filter, diffusible organic, coagulation, recirculation

Crude palm oil from interspecific hybrid Elaeis oleifera×Elaeis guineensis: Fatty acid regiodistribution and molecular species of glycerides

2013 ◽  
Vol 141 (1) ◽  
pp. 245-252 ◽  
Author(s):  
Massimo Mozzon ◽  
Deborah Pacetti ◽  
Paolo Lucci ◽  
Michele Balzano ◽  
Natale Giuseppe Frega
Keyword(s):  
Fatty Acid ◽  
Palm Oil ◽  
Molecular Species ◽  
Interspecific Hybrid ◽  
Elaeis Guineensis ◽  
Crude Palm Oil ◽  
Elaeis Oleifera

Antioxidant Activity of Silk Fibroin Peptide Hydrolyzed by Pancreatin

2014 ◽  
Vol 1081 ◽  
pp. 110-114 ◽  
Author(s):  
Zhen Zhu ◽  
Hua Yin ◽  
Yan An
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Nitrogen Content ◽  
Silk Fibroin ◽  
Radical Scavenging ◽  
Amino Nitrogen ◽  
Free Radical Scavenging ◽  
Hydrolysis Process ◽  
Superoxide Free Radical ◽  
Hydrolysis Of

This research adopts the pancreatin hydrolysis of silk fibroin active peptide, evaluate the antioxidant activity of hydrolysates. In the process of hydrolysis of silk fibroin, by measuring the amino nitrogen content of neutral formaldehyde titration method. Find the amino nitrogen content gradually stabilized at around 0.37g/L, and superoxide free radical scavenging rate changing with time fluctuation trend, superoxide free radical scavenging rate to a maximum of 65.03% at 220min.The use of silk fibroin hydrolysis process optimization,reaction time 160min, enzyme concentration4% , substrate concentration 20mg/ml, pH 8, temperature 38°C. The hydrolysis process under the hydrolysate on superoxide radical scavenging rate of 72.73%. The scavenging rate of hydroxyl radical is 47.24%. Red blood cell hemolysis induced by H2O2 inhibition rate was 24.30%.

Effects of water hyacinth fiber size on sound absorption properties of advanced recycled palm oil-based polyurethane foam composite

2021 ◽  
Author(s):  
Nathapong Sukhawipat ◽  
Thanathach Yingshataporn-a-nan ◽  
Tanapat Minanandana ◽  
Kitchapat Puksuwan ◽  
Laksana Saengdee ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Palm Oil ◽  
Water Hyacinth ◽  
Sound Absorption ◽  
Absorption Properties ◽  
Foam Composite ◽  
Fiber Size ◽  
Water Hyacinth Fiber

scholarly journals Alterations of palm oil (Elaeis guineensis) in the continuous industrial par frying of breaded chicken snacks

2014 ◽  
Vol 34 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Débora Rezende Ferreira ◽  
Adelaide Del Pino Beléia ◽  
Rui Sérgio dos Santos Ferreira da Silva
Keyword(s):  
Palm Oil ◽  
Elaeis Guineensis
Sign in / Sign up

Export Citation Format

Share Document