Enzymatic hydrolysis of sago starch in a twin-screw extruder

1997 ◽  
Vol 32 (4) ◽  
pp. 403-426 ◽  
Author(s):  
S. Govindasamy ◽  
O.H. Campanella ◽  
C.G. Oates
Keyword(s):  
Enzymatic Hydrolysis ◽  
Twin Screw Extruder ◽  
Sago Starch ◽  
Screw Extruder ◽  
Twin Screw ◽  
Hydrolysis Of

scholarly journals Enzymatic hydrolysis of steam exploded corncob residues after pretreatment in a twin-screw extruder

2014 ◽  
Vol 3 ◽  
pp. 99-107 ◽  
Author(s):  
Jun Zheng ◽  
Kim Choo ◽  
Chris Bradt ◽  
Rick Lehoux ◽  
Lars Rehmann
Keyword(s):  
Enzymatic Hydrolysis ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw ◽  
Hydrolysis Of

scholarly journals Optimization in Preparing Sago Based Maltodextrin in a Twin Screw Extruder

2020 ◽  
pp. 45-54
Author(s):  
Ansharullah Ansharullah ◽  
La Rianda ◽  
Sri Wahyuni ◽  
. Tamrin
Keyword(s):  
High Performance ◽  
Food System ◽  
Degree Of Polymerization ◽  
Twin Screw Extruder ◽  
Sago Starch ◽  
Response Surface Design ◽  
Screw Extruder ◽  
Surface Design ◽  
Dextrose Equivalent ◽  
Twin Screw

Maltodextrins were prepared from sago starch in a twin screw extruder.  A response surface design was used in the extrusion, which included the variations in the α-amylase (Termamyl 120L)  concentrations of 12-24 g/kg dry starch, the moisture contents of 45-55%, and the screw speeds of 75-175 rpm. The product properties examined included dextrose equivalent (DE) values, and composition of malto-oligosaccharides of degree of polymerization 2 (DP2) to DP7 by using high performance liquid chromatography (HPLC). The result indicated that DE values ranged from 3.16 – 23.55 mg/g sample and the oligosaccharide component of DP5 was predominant in the samples.  The possibility of using the products in food application was also discussed, including incorporating the maltodextrin in a food system as binder, bulking agent, flavor encapsulation, fat replacer, or other applications.

scholarly journals Properties of Poly(Lactic Acid) Filled with Hydrophobic Cellulose/SiO2 Composites

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Kittithorn Lertphirun ◽  
Kawee Srikulkit
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Hydrolytic Degradation ◽  
Poly Lactic Acid ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw ◽  
Hydrolysis Of Cellulose ◽  
One Step ◽  
Hydrolysis Of

Hydrophobic cellulose/SiO2 composites were prepared. Resultant hydrophobic cellulose/SiO2 composites were melt mixed with PLA using a twin-screw extruder to obtain 10 wt% masterbatch. Again, 10 wt% masterbatch was melt mixed with virgin PLA, resulting in PLA containing hydrophobic cellulose/SiO2 at various contents (1 wt%, 3 wt%, and 5 wt%) using a twin-screw extruder (barrel zone temperature: 150/160/170/180/190°C (die zone)). Injection-molded samples were prepared for mechanical properties evaluation. Results showed that poor mechanical properties found at low percent loadings were associated with a significant depolymerization of masterbatch composition due to twice thermal treatments. Note that 10 wt% masterbatch was subjected to injection molding straight away in a one-step process. Results showed that 10 wt% hydrophobic cellulose/SiO2/PLA composites exhibited mechanical properties equivalent to neat PLA. Importantly, the addition of hydrophobic cellulose/SiO2 at high percent loading could favor landfill degradation of PLA via water absorption ability of cellulose. It was expected that enzymatic hydrolysis of cellulose resulted in the formation of lactic acid and silicic acid which consequently catalyzed the hydrolytic degradation (acid hydrolysis) of PLA. The hydrolytic degradation produced carboxylic acid end group which further accelerated the degradation rate.

scholarly journals A new lignocellulosic biomass deconstruction process combining thermo-mechano chemical action and bio-catalytic enzymatic hydrolysis in a twin-screw extruder

2014 ◽  
Vol 55 ◽  
pp. 258-266 ◽  
Author(s):  
Virginie Vandenbossche ◽  
Julien Brault ◽  
Gérard Vilarem ◽  
Oscar Hernández-Meléndez ◽  
Eduardo Vivaldo-Lima ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Lignocellulosic Biomass ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Chemical Action ◽  
Biomass Deconstruction ◽  
Twin Screw

Reactive Blending in a Twin Screw Extruder

1996 ◽  
Vol 11 (2) ◽  
pp. 139-146 ◽  
Author(s):  
A. De Loor ◽  
P. Cassagnau ◽  
A. Michel ◽  
L. Delamare ◽  
B. Vergnes
Keyword(s):  
Twin Screw Extruder ◽  
Reactive Blending ◽  
Screw Extruder ◽  
Twin Screw
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