Effect of different extrusion methods on physicochemical properties and qualities of noodles based on rice flour

2021 ◽  
pp. 108201322110692
Author(s):  
Nispa Seetapan ◽  
Bootsrapa Leelawat ◽  
Nattawut Limparyoon ◽  
Rattana Yooberg
Keyword(s):  
Moisture Content ◽  
Rice Flour ◽  
Extrusion Process ◽  
Scanning Electron Micrographs ◽  
Twin Screw Extruder ◽  
Capillary Rheometer ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Twin Screw ◽  
Thermomechanical Processes

Rice noodles have been manufactured in the food industry using different extrusion methods, such as traditional and modern extrusions, which affect the noodle structure and qualities. Therefore, the effects of the extrusion process on qualities of rice noodles using the same blend of rice flour and crosslinked starch were evaluated. In this study, a capillary rheometer was used as an alternative approach to simulate the traditional extrusion method in which the noodles are obtained by continuously pressing the pregelatinized noodle dough through a die. For modern extrusion, a twin-screw extruder was employed to obtain the noodles in a one-step process. The optimal range of moisture content used in the formulation was studied. Upon cooking, the noodles showed a decrease in cooking time and cooking loss with increasing moisture content in the formulation. All cooked noodles showed comparable tensile strength, but those extruded by a twin-screw extruder had substantially greater elongation. Scanning electron micrographs revealed that the noodles prepared using the extruder had a denser starch matrix, while those obtained from a capillary rheometer showed the aggregation of starch fragments relevant to the existence of starch gelatinization endotherm from differential scanning calorimetry. This indicated that the extrusion process using the twin-screw extruder provided a more uniform starch transformation, i.e., more starch granule disruption and gelatinization, thus giving the noodles a more coherent structure and better extensibility after cooking. The obtained results suggested that different thermomechanical processes used in the noodle industry gave the extruded rice noodles different qualities respective to their different microstructures.

Characterization of waste tire rubber devulcanized in twin-screw extruder with thermoplastics

2018 ◽  
Vol 34 (3) ◽  
pp. 143-157 ◽  
Author(s):  
Anderson Thadeu Nunes ◽  
Rubens Eduardo dos Santos ◽  
Juliene Sátiro Pereira ◽  
Rafael Barbosa ◽  
José Donato Ambrósio
Keyword(s):  
Extrusion Process ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Tire Rubber ◽  
Rotating Speed ◽  
Waste Tire ◽  
Truck Tire ◽  
Twin Screw ◽  
Waste Tire Rubber

Waste tire rubber (WTR) supplied by a truck tire retreader were processed in an intermeshing co-rotating twin-screw extruder (ICTSE). The extrusion process evaluated the efficiency of the thermomechanical recycling in the devulcanization of WTR rubbers. Samples were prepared by varying the process parameters, the particles sizes and thermoplastics, and the latter was used as devulcanization auxiliary agents. After extrusion, samples were subjected to solvent extraction to determine the soluble fraction (SF). Subsequently, these SF were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The highest SF (29 wt%) was obtained with higher screw rotating speed and with smaller particle size. Higher SF indicated a higher degree of devulcanization. The FTIR and DSC analyses showed that natural rubber was the main rubber extracted from extruded samples. In addition, polypropylene was more effective than low-density polyethylene in the devulcanization process, promoting higher SF.

SME-Arrhenius Model for WSI of Rice Flour in a Twin-Screw Extruder

2005 ◽  
Vol 82 (5) ◽  
pp. 574-581 ◽  
Author(s):  
Hanwu Lei ◽  
R. Gary Fulcher ◽  
Roger Ruan ◽  
Bernhard van Lengerich
Keyword(s):  
Rice Flour ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Arrhenius Model ◽  
Twin Screw

Optimization of nutrient retention in whole flours extruded from cowpea biofortified grain

2021 ◽  
Vol 24 ◽  
Author(s):  
Jorge Minoru Hashimoto ◽  
Jéssica Pinheiro Mendes Sampaio ◽  
Luís José Duarte Franco ◽  
Elizabeth Harumi Nabeshima ◽  
Kaesel Jackson Damasceno e Silva
Keyword(s):  
Moisture Content ◽  
Rotation Speed ◽  
Nutrient Retention ◽  
Magnesium Content ◽  
Extrusion Process ◽  
Screw Extruder ◽  
Twin Screw ◽  
Iron And Zinc ◽  
Copper Zinc ◽  
Extruded Products

Abstract Whole flour of cowpea grains of the cultivar BRS Tumucumaque biofortified in iron and zinc were processed in a co-rotating twin-screw extruder Clextral HT 25. A central rotational composite design 23, combining temperature (from 86.4 to 153.6 °C), screw rotation speed (from 163.6 to 836.4 rpm) and moisture content (from 16.6% to 23.4%), was used to assess the effects on flour constituents. The three variables significantly affected (p < 0.05) the levels of protein and copper in the extrudates. The reactions of the extrusion process caused a decrease in the levels of proteins and an increase in the levels of copper, zinc and potassium, and these amounts were accentuated as the values of the process variables approached those of the central point region. Extreme conditions at high rotational screw speeds combined with low moisture content reduced the magnesium content, at the opposite end of the values for these two variables, the intensity of the reduction was lower. In the analysis of global desirability, it was found that the extrusion condition at 112.6 °C, 587.4 rpm and 23.4% moisture provided the highest nutrient retention. The levels of iron and zinc remained above 60 and 40 mg kg-1, respectively, in extruded products.

Empirical Modeling of Mean Residence Time in a Co-Rotating Twin-Screw Extruder with Rice Flour

2008 ◽  
Vol 85 (2) ◽  
pp. 230-237 ◽  
Author(s):  
Hanwu Lei ◽  
R. Gary Fulcher ◽  
Roger Ruan ◽  
Bernhard van Lengerich
Keyword(s):  
Residence Time ◽  
Mean Residence Time ◽  
Rice Flour ◽  
Empirical Modeling ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw

Graft Polymerization of L-Lactide onto Cellulose in Ionic Liquid via Twin Screw Extruder

2013 ◽  
Vol 658 ◽  
pp. 8-12
Author(s):  
Xuan Zhong ◽  
Xian Tao Tong ◽  
Mu Huo Yu ◽  
Hai Feng Li ◽  
Huan Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ring Opening ◽  
Graft Polymerization ◽  
Reactive Extrusion ◽  
Extrusion Process ◽  
Twin Screw Extruder ◽  
Reaction Products ◽  
Screw Extruder ◽  
Twin Screw

A twin-screw extruder was used to carry out the ring opening graft polymerization of L-lactide onto cellulose through reactive extrusion process. Ionic liquid (1-butyl-3-methylimidazolium chloride) [Bmim]Cl and Sn(oct)2 were used as solvent and catalyst, respectively. FTIR, TGA and XRD were used to investigate the structure, thermal stability and crystalline behavior of the reaction products. The result showed a successful ring opening polymerization of L-lactide on cellulose. Furthermore, it showed a increased crystalline degree and thermal stability after being introduced the PLLA.

scholarly journals Influence of the Conditions of Corotating Twin-Screw Extrusion for Talc-Filled Polypropylene on Selected Properties of the Extrudate

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1460 ◽  
Author(s):  
Sasimowski ◽  
Majewski ◽  
Grochowicz
Keyword(s):  
Maximum Tensile Stress ◽  
Extrusion Process ◽  
Twin Screw Extrusion ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Melt Flow Rate ◽  
Test Segment ◽  
Screw Extrusion ◽  
Twin Screw

The aim of the study was to determine the effect of the application of processing screws with a modified test segment in a corotating twin-screw extruder on selected properties of talc-filled polypropylene extrudate. The test segment was built of trilobe kneading elements and its design modifications refered to changing the distance between the kneading elements and the angle of positions of kneading elements that are relative to each other. The performed tests included the production of extrudate with various degrees of talc-filling using five design solutions of the test segment and then measurements of selected properties, such as tensile strength, elongation at maximum tensile stress, and melt flow rate. Structural studies using scanning electron microscope (SEM) and differential scanning calorimetry (DSC) were also carried out. The study includes not only the description of experimental results but also the determination of empirical models describing the dependence of the properties of the obtained extrudate on the conditions of the extrusion process and the design features of the test segment.

Dry Powder Mixing Is Feasible in Continuous Twin Screw Extruder: Towards Lean Extrusion Process for Oral Solid Dosage Manufacturing

2021 ◽  
Vol 22 (7) ◽  
Author(s):  
Daniel Mateo-Ortiz ◽  
Vladimir Villanueva-Lopez ◽  
Shashank Venkat Muddu ◽  
Gregory D. Doddridge ◽  
Dana Alhasson ◽  
...  
Keyword(s):  
Extrusion Process ◽  
Twin Screw Extruder ◽  
Dry Powder ◽  
Screw Extruder ◽  
Powder Mixing ◽  
Solid Dosage ◽  
Twin Screw

scholarly journals Transparent PC/PMMA Blends Via Reactive Compatibilization in a Twin-Screw Extruder

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2070 ◽  
Author(s):  
Tobias Bubmann ◽  
Andreas Seidel ◽  
Volker Altstädt
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Side Effect ◽  
Extrusion Process ◽  
Industrial Applications ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Reactive Compatibilization ◽  
Twin Screw ◽  
Pmma Blends

The effect of different catalysts on reactive compatibilization of 50/50 polycarbonate (PC)/polymethylmethacrylate (PMMA) blends achieved via transesterification that occurs during compounding in a twin-screw extruder was investigated on a phenomenological (optical and mechanical properties), mesoscopic (phase morphology), and molecular level (PC-graft(g)-PMMA-copolymer formation and polymer molecular weight degradation). Formation of PC-(g)-PMMA-copolymer by transesterification resulting in transparent mono-phase PC/PMMA blends with obviously improved compatibility of the two polymer constituents requires use of a suitable catalyst. As a side-effect, PC-(g)-PMMA-copolymer formation by transesterification is always accompanied by a significant simultaneous decomposition of the molecular weight (Mw) of the PC. For the first time, a colorless, transparent (mono-phase) PC/PMMA 50/50 blend was achieved by a twin-screw extrusion process that can be easily transferred into industrial scale. To achieve this milestone, 0.05 wt% of a weakly acidic phosphonium salt catalyst had to be applied. As a result of the decrease in Mw of the PC, the mechanical properties (e.g., tensile strain at break and impact strength) of the obtained blends were significantly deteriorated rather than improved as targeted by the polymer compatibilization; therefore, the produced transparent PC/PMMA blends are considered not yet technically suitable for any industrial applications. Different manufacturing process strategies that do not inherently result in PC degradation as a side effect of PC-graft(g)-PMMA-copolymer formation have to be developed to potentially achieve transparent PC/PMMA blends with a useful balance of properties. Based on the experimental observations of this study, a new mechanism of the transesterification reaction occurring during reactive compounding of PC and PMMA in the presence of the effective catalysts is proposed.

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