Effect of Ultrasound on Acid-Alcohol Treated Hydrolysis of Starch

Excessive intake of fat will damage human health seriously, and it can also cause obesity, high blood pressure, atherosclerosis and coronary heart disease. So low fat foods gradually become highly widespread. As a result, fat substitutes are focused, which have the same physical and sensory properties as fat, and can be used in place of fat in many cases. In this work, fat substitute was prepared by acid-alcohol treated hydrolysis of corn starch with and without ultrasound. Some factors affecting the DE of starch hydrolysate were investigated by experiments with and without ultrasound, including reaction temperature, time, ethanol concentration, and hydrochloric acid concentration. Enhancements of the hydrolysis by ultrasound was observed.The results showed that the DE increased with the rise of reaction temperature, time and hydrochloric acid concentration. However, it decreased as the increase of alcohol concentration. Ultrasound can accelerate the hydrolysis evidently, and increased the DE by at least 22.22%.

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Effect of Acidolysis Process on Viscosity of Cassava Starch

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.821-822.1118 ◽

2013 ◽

Vol 821-822 ◽

pp. 1118-1121

Author(s):

Yan Ming Zhang ◽

Xiao Mei Wang

Keyword(s):

Reaction Time ◽

Hydrochloric Acid ◽

Acid Concentration ◽

Reaction Temperature ◽

Cassava Starch ◽

Hydrochloric Acid Concentration ◽

Mixing Effects

The cassava starch was firstly hydrolyzed using hydrochloric acid as the catalyst below the pasting point of starch, and then dried in the oven in order to get acid-hydrolyzed cassava starch, which would be used for the next size mixing. Effects of reaction time, temperature, and hydrochloric acid concentration on sizing liquor viscosity of acidolysis cassava starch were studied. The results show that, the viscosity of the acidolysis cassava starch decreases with the extension of reaction time, and it sharply declines before 60mins; the viscosity decreases with the increase of reaction temperature, and the change of viscosity is large when the reaction temperature of 40 °C increases to 45 °C; the viscosity decreases with the increase of hydrochloric acid concentration.

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Exploration on Methods of Making PAFC Using Coal Gangue

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.291-294.1847 ◽

2011 ◽

Vol 291-294 ◽

pp. 1847-1850

Author(s):

Xian Li Wang ◽

Peng Hui Shi ◽

Jun Feng Wu ◽

Pan Min Zhu

Keyword(s):

Grain Size ◽

Hydrochloric Acid ◽

Acid Concentration ◽

Reaction Temperature ◽

Coal Gangue ◽

Hydrochloric Acid Concentration ◽

Operation Conditions ◽

Roasting Temperature ◽

The Impact ◽

Roasting Time

The paper expounded the impact of coal gangues on environment. Also it deals with the feasibility of making polymeric aluminum and ferric chloride (PAFC) using coal gangue. Through orthogonal test, the paper explores such factors as roasting temperature, roasting time, hydrochloric acid concentration, reaction temperature and grain size influence on the making process, and give the best operation conditions: roasting temperature is 700°C, roasting time is 1.5～3.5h, hydrochloric acid concentration is 25%～30%, reaction temperature is 120°C and grain size is 60 mesh. At last, the qualities of products are analyzed and the conclusion is given: it is feasible to make PAFC from coal gangue and it should be popularized.

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Effect of the hydrochloric acid concentration on the hydrolysis of sorghum straw at atmospheric pressure

Journal of Food Engineering ◽

10.1016/s0260-8774(03)00288-7 ◽

2004 ◽

Vol 63 (1) ◽

pp. 103-109 ◽

Cited By ~ 57

Author(s):

Abelardo Herrera ◽

Simón J. Téllez-Luis ◽

Juan J. González-Cabriales ◽

Jose A. Ramı́rez ◽

Manuel Vázquez

Keyword(s):

Hydrochloric Acid ◽

Acid Concentration ◽

Atmospheric Pressure ◽

Hydrochloric Acid Concentration ◽

Hydrolysis Of ◽

Sorghum Straw

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Research of Al and Fe Leaching Rate in the Process of Slag Leaching by Hydrochloric Acid

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.675-677.1417 ◽

2014 ◽

Vol 675-677 ◽

pp. 1417-1420

Author(s):

Guang Qiang Mang ◽

Ming Cheng

Keyword(s):

Blast Furnace ◽

Reaction Time ◽

Hydrochloric Acid ◽

Acid Concentration ◽

Reaction Temperature ◽

Acid Leaching ◽

Hydrochloric Acid Concentration ◽

Leaching Rate ◽

Furnace Process ◽

Leaching Condition

Smelting slag from mineral process and blast furnace process to vanadium titanium magnetite is a kind of precious secondary resource in which TiO2 content is higher than 20%. Taking titanium-bearing blast furnace slag in Panzhihua region as research object, this paper analyzes four factors that affect the leaching rate of Al and Fe. The four factors are reaction temperature, reaction time, acid concentration, and the ratio of acid and slag. The conclusion drawn from hydrochloric acid leaching experiment is the factor that causes greatest effect to leaching rate of Al and Fe is reaction temperature, then reaction time follows. Acid concentration and the ratio of acid and slag cause insignificant affect. Appropriate leaching condition is 5h reaction time, 5mol/L hydrochloric acid concentration, 90°C~100°C reaction temperature and 1.2 the ratio of acid and slag. Max leaching rate of Al and Fe is 78.5% and 65.8% respectively.

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Experimental Study on Concentrating Scandium by Leaching from Associated Scandium Ore

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.734-737.1033 ◽

2013 ◽

Vol 734-737 ◽

pp. 1033-1036

Author(s):

Gui Fang Zhang ◽

Peng Yan ◽

Qing Rong Yang

Keyword(s):

Experimental Study ◽

Particle Size ◽

Hydrochloric Acid ◽

Acid Concentration ◽

Hydrochloric Acid Concentration ◽

Leaching Rate ◽

Optimal Conditions ◽

Research Results ◽

Solid Ratio ◽

Leaching Residue

Based on the benefication of the complex silicate ore containing scandium, the research about aid-leaching agent used in the leaching of the scandium concentrate was been conducted. And the suitable leaching agent and aid-leaching agent which the useful ions entered into leaching liquid and the harmful ions were kept in leaching residue were been found according to the experiment results. For the scandium of sample existed various complex silicate ore as isomorphism form, the research has adopted hydrochloric acid with aid-leaching agent to dissociate the silicate ore and make scandium entering into solution. The research results has shown that the scandium leaching rate could reach 92.06% under the optimal conditions which the hydrochloric acid concentration is 22.8%, the dosage of aid leaching agent is 6%, liquid solid ratio is 4:1, particle size of leaching material totally is less than 0.15mm and leaching time is 8h.

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Mercury Removal from Fish Protein Concentrate

Journal of the Fisheries Research Board of Canada ◽

10.1139/f72-283 ◽

1972 ◽

Vol 29 (12) ◽

pp. 1777-1779 ◽

Cited By ~ 1

Author(s):

L. W. Regier

Keyword(s):

Hydrochloric Acid ◽

Acid Concentration ◽

Extraction Procedure ◽

Extraction Process ◽

Alcohol Concentration ◽

Mercury Removal ◽

Protein Concentrate ◽

Fish Protein ◽

Proteinaceous Food

The potential reclamation of mercury contaminated proteinaceous food by an extraction procedure such as employed in making fish protein concentrate was investigated. The addition of hydrochloric acid to the isopropanol extractant was found to give removals as high as 93% from dry swordfish protein concentrate. The normal Halifax isopropanol extraction process did not effect any significant removal of the mercury.Preliminary studies of the variables indicated acid concentration, kind of alcohol (ethanol and isopropanol), alcohol concentration, extractant volume, and number of extractions were important in the extraction.

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