Cold-water solubility, oil-adsorption and enzymolysis properties of amorphous granular starches

2021 ◽  
Vol 117 ◽  
pp. 106669
Author(s):  
Chenlu Fang ◽  
Junrong Huang ◽  
Huayin Pu ◽  
Qi Yang ◽  
Zhiguang Chen ◽  
...  
Keyword(s):  
Water Solubility ◽  
Cold Water ◽  
Oil Adsorption

Preparation and Characterization of Cationic Cassia Tora Gum

2013 ◽  
Vol 781-784 ◽  
pp. 526-530 ◽  
Author(s):  
Shao Ying Li ◽  
Chun Mei Niu ◽  
Hua Yu Zhong
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Water Solubility ◽  
Cold Water ◽  
Water Solution ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
Cassia Tora ◽  
Dispersing Agent

Series of cationic cassia tora gum (CCTG) were synthesized using 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CHPTAC) as cationic etherifying agent, isopropanol-water solution as dispersing agent, in presence of sodium hydroxide under different reaction conditions. The optimum ratio for preparing the cationic cassia tora gum are that CHPTAC-CTG molar ratio is 0.6:1; NaOH-CHPTAC molar ratio is 1.3:1.The optimum conditions are that reaction temperature is 55°Cand reaction time is 3.5 h. The cold water solubility was improved apparently. The solution transmittance has corresponding relationship with the nitrogen content (N%) in the certain range, and the maximum transmittance is up to 87.2%. N% increased with the increase of reaction time and stable N% can be obtained in shorter reaction time at higher reaction temperature. The products were characterized by 13C-NMR. The heat resistance of CTG and CCTG were analyzed.

scholarly journals Improvements in gelatin cold water solubility after electrospinning and associated physicochemical, functional and rheological properties

2020 ◽  
Vol 104 ◽  
pp. 105740 ◽  
Author(s):  
Behrouz Ghorani ◽  
Bahareh Emadzadeh ◽  
Hassan Rezaeinia ◽  
Stephen.J. Russell
Keyword(s):  
Rheological Properties ◽  
Water Solubility ◽  
Cold Water

Preparation of oxidized corn starch in dry method assisted by kneader

2021 ◽  
Vol 11 (1) ◽  
pp. 100-106
Author(s):  
Ying Li ◽  
Kang Zhang ◽  
Ya-Lu Song ◽  
Fei Cheng ◽  
Mi Zhou ◽  
...  
Keyword(s):  
Water Solubility ◽  
Corn Starch ◽  
Cold Water ◽  
Orthogonal Experiment ◽  
Gel Permeation Chromatography ◽  
Solution Viscosity ◽  
High Count ◽  
Viscosity Property ◽  
Carboxyl Content ◽  
Viscosity Stability

In this study, oxidized starch (OCS) with different carboxyl content was prepared by the dry method, with H2O2 as the oxidant and CuCl2 as the catalyst. The optimum conditions were obtained by an orthogonal experiment, under the carboxyl and carbonyl content of 0.6813 and 1.0416% respectively. Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction and gel permeation chromatography characterized the structures of OCS, and the thermal, gelatinization, viscosity property and its viscosity stability were measured. The results demonstrated that the crystallinity decreased slightly and the A-type crystal remained unchanged after oxidation, and the molecular weight of OCS decreased greatly. The thermal decomposition temperature, apparent viscosity and setback viscosity also decreased. With the increase of carboxyl content in OCS, the cold-water solubility and paste transparency of OCS paste increased gradually, while the viscosity of OCS paste decreased, and the viscosity stability displayed a trend of first increasing and then reducing. The OCS obtained by a kneader had low solution viscosity and high viscosity stability, suitable for sizing high count warp yarns.

Activation of Corn Starch and Effect of the Activation on its Reactivity

2012 ◽  
Vol 549 ◽  
pp. 183-187 ◽  
Author(s):  
Yan Wang ◽  
Jia Ying Xin ◽  
Tie Liu ◽  
Kai Lin ◽  
Chao Yue Zhang ◽  
...  
Keyword(s):  
Particle Size ◽  
Water Solubility ◽  
Corn Starch ◽  
Cold Water ◽  
Molecular Level ◽  
Chemical Reactivity ◽  
Level Structure ◽  
Average Particle Size ◽  
Average Particle ◽  
Structure And Morphology

Native corn starch (NS) was activated by treatment with NaOH /Urea /H2O solution at low temperature to improve its chemical reactivity. Effects of the activation on the molecular level structure and morphology of the corn starch were investigated by mean of SEM. It was found that the average particle size of activated corn starch (AS) decreased to nanometer level, smaller than those of NS. The cold water solubility (CWS) has been increased from 0.45% to 96.4%. Effects of the activation on reactivity of the corn starches were investigated by analyzing the influences of the activation on degrees of substitutions (DS) of the esterifications. The DS of AS was higher than that of NS, from 0 to 0.1578, which indicated that NaOH/urea activation enhanced the chemical reaction activity of corn starch.

scholarly journals Biodegradability of Polyvinyl Alcohol Based Film Used for Liquid Detergent Capsules

2021 ◽  
Vol 58 (2) ◽  
pp. 88-96
Author(s):  
Dominic Byrne ◽  
Geert Boeije ◽  
Ian Croft ◽  
Gerd Hüttmann ◽  
Gerard Luijkx ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Water Solubility ◽  
Cold Water ◽  
High Water ◽  
Water Soluble ◽  
Screening Tests ◽  
Potential Contribution ◽  
Film Material ◽  
Liquid Detergent ◽  
Washing Process

Abstract Questions and potential misperceptions have arisen about the potential contribution of liquid detergent capsules to the environmental microplastics issue. The film of these detergents is highly water soluble, also in cold water, as it must fully dissolve during every type of washing process. Water-soluble grades of polyvinyl alcohol, the most commonly used detergent capsule film material, are recognised to be biodegradable. In the current paper, adequate biodegradability is confirmed by means of ready biodegradation screening tests, across a range of polyvinyl alcohol detergent grade films. The high water solubility in itself implies that detergent capsule films are not within the microplastic scope. Furthermore, their biodegradability ensures there is no concern for persistence or accumulation in the environment.

scholarly journals Variation in soluble extractives, lignin and holocellulose content of wood of different provenances of Tectona grandis L.

2016 ◽  
Vol 8 (1) ◽  
pp. 80-83
Author(s):  
R. K. Meena ◽  
A. U. Nimkar
Keyword(s):  
Significant Variation ◽  
Water Solubility ◽  
Cold Water ◽  
Tectona Grandis ◽  
Hot Water ◽  
Maximum Percentage ◽  
Holocellulose Content ◽  
Alcohol Benzene

The present studies were conducted on variation in soluble extractives, lignin and holocellulose content of wood of different provenances of Tectona grandis. The data on cold and hot water solubility, alcohol-benzene solubility, lignin and holocellulose content of wood exhibited significant variation in different provenances of Teak. Among different selected provenances, the highest cold water solubility [16.43% (4.05)] and hot water solubility [19.56% (4.42)] was recorded in APNPL-10 and lowest was recorded in ORPLM-1 [6.34% (2.52)] and [8.34% (2.89)], respectively. Maximum percentage of alcohol-benzene solubility was observed in KLN-2 [17.64% (4.20)] andminimum per cent was recorded in MHSC-J1 [7.13% (2.67)]. Maximum percentage of lignin [39.00 % (38.64)] and holocellulose (76.53%) content was noticed in ORANP-6 and APT-11, respectively. whereas, minimum percentage of lignin 20.83% (27.15) and holocellulose (64.20%) content were found in TNT-10 and APT-20, respectively. Thestudy would help to utilize the findings and developing future strategies for screening the provenances of Tectona grandis.

Study on Basic Properties of Freeze-Drying Gelatinized Glutinous Rice Starch

2014 ◽  
Vol 1010-1012 ◽  
pp. 1793-1796
Author(s):  
Jin Liu ◽  
Ren Dang Yang ◽  
Fei Yang
Keyword(s):  
Water Solubility ◽  
Cold Water ◽  
Light Transmittance ◽  
Rice Starch ◽  
X Ray Diffraction ◽  
Glutinous Rice ◽  
Particle Size Analyzer ◽  
Freeze Dried ◽  
Mean Size ◽  
Pseudoplastic Fluids

Freeze-dried gelatinization glutinous rice starch (FGGRS) was prepared, characterized and evaluated. The functional properties of native starch and FGGRS were studied, respectively. Scanning electron microscopy (SEM) suggested the structure of FGGRS is looser and more porous, and the surface is rough and scaly. Due to the rapidly cooling process, the movement of starch chains was curded and X-ray diffraction (XRD) showed the peak strength of FGGRS is lower than the original, presented as a diffuse state and indicated that it is a V-type structure. Its particle was determined by mastersizer 2000 particle size analyzer and resulted in particles with a mean size of 11.33μm. Rheological tests confirmed FGGRS is pseudoplastic fluids and demonstrated that it belonged to shear thinning system. FGGRS presented a lower apparent viscosity and performed better freeze-thaw stability. The light transmittance of FGGRS was 27.67%, and presented a better transparency. In addition, due to its formation of new crystal types and its loose microstructure after lyophilization the cold water solubility of FGGRS is excellent.

scholarly journals Gelatin nanofibers: Analysis of triple helix dissociation temperature and cold-water-solubility

2016 ◽  
Vol 57 ◽  
pp. 200-208 ◽  
Author(s):  
Iline Steyaert ◽  
Hubert Rahier ◽  
Sandra Van Vlierberghe ◽  
Jos Olijve ◽  
Karen De Clerck
Keyword(s):  
Triple Helix ◽  
Water Solubility ◽  
Cold Water ◽  
Dissociation Temperature

scholarly journals Chemical properties of modified mahogany wood by heat treatment

2018 ◽  
Vol 7 (1) ◽  
pp. 37 ◽  
Author(s):  
Ganis Lukmandaru ◽  
Dewi Susanti ◽  
Ragil Widyorini
Keyword(s):  
Heat Treatment ◽  
Water Solubility ◽  
Cold Water ◽  
Lignin Content ◽  
Chemical Properties ◽  
Treatment Method ◽  
Hot Water ◽  
Effect Of Temperature ◽  
Community Forests ◽  
Ph Values

Mahogany woods from community forests generally have relatively low qualities due to lack of maintenance activities and for their young harvesting stage. Heat treatment is known as wood modification method that could improve the quality of the wood. The aim of this study was to determine the interaction effect of temperature and method of heat treatment on the chemical properties of young mahogany wood. Materials used in this research were mahogany wood boards from community forest which were heat-treated using oven and steam methods performed at the temperature of 90°C, 120°C, and 150oC for 2 hours. In this research, some chemical changes were analyzed. Results of the research showed that the interaction of temperature and heat treatment method gave a significant decreasing on the pentosan amount, and hot-water extractive solubility, particularly the steaming at 150oC. The increasing temperature of heat treatment significantly decreased the content of holocellulose, α-cellulose, hemicellulose, and pH values whereas it increased lignin content,  extractives (cold-water and alcohol-benzene extractives) and solubility in 1% NaOH. Steaming method provided lower levels in the content of holocellulose, ethanol-benzene extract, cold-water solubility, and pH values compared to the oven heating. However, the steaming method over 1200C should be considered as it would reduce the wood strengths.

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