Mercury Removal from Fish Protein Concentrate

1972 ◽  
Vol 29 (12) ◽  
pp. 1777-1779 ◽  
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.

Effect of Ultrasound on Acid-Alcohol Treated Hydrolysis of Starch

2011 ◽  
Vol 391-392 ◽  
pp. 1330-1333
Author(s):  
Jie Zheng ◽  
Lin Yang ◽  
Rong Liu ◽  
Zhi Hua Zhang ◽  
Qian Li ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Concentration ◽  
Reaction Temperature ◽  
Corn Starch ◽  
Alcohol Concentration ◽  
Hydrochloric Acid Concentration ◽  
Factors Affecting ◽  
Fat Substitutes ◽  
Hydrolysis Of ◽  
Temperature Time

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%.

Extraction and Characterization of Nanocrystalline Cellulose (NCC) from Ramie Fiber by Hydrochloric Acid Hydrolysis

2020 ◽  
Vol 867 ◽  
pp. 109-116
Author(s):  
Dimas Abdillah Akbar ◽  
Kusmono ◽  
Muhammad Waziz Wildan ◽  
Mochammad Noer Ilman
Keyword(s):  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Acid Concentration ◽  
Natural Fibers ◽  
Crystallinity Index ◽  
High Strength ◽  
Extraction Process ◽  
Nanocrystalline Cellulose ◽  
Ramie Fiber ◽  
Cellulose Content

The present study investigates the structural, crystallinity index, crystallite size, morphological, and the dimension of Nanocrystalline Cellulose (NCC) extracted from ramie fiber by hydrochloric acid-hydrolysis. NCC was chosen because it has high strength and modulus compared to other natural materials. Ramie fiber was chosen because it has high cellulose content and abundant in Indonesia. The other reason is ramie has a high crystallinity index compared to other natural fibers. The extraction process was carried out into two steps: cellulose purification then followed by hydrochloric acid hydrolysis. The characterizations of extracted NCCs were conducted through Fourier-Transform Infrared spectroscopy (FTIR), X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), and Particle Size Analyzer (PSA). The focus of this research was to study the effect of acid concentration on the characteristics of extracted NCCs. The results show that NCCs could be extracted through hydrolysis using hydrochloric acid. Morphological analysis by TEM shows the formation of rod-like shaped NCCs. Hydrolysis by hydrochloric acid does not affect the chemical compound of cellulose. It was found that during hydrolysis, the higher acid concentration being employed had resulted in smaller dimension of NCCs and decreasing crystallinity index.

Developed method for producing fish protein concentrate from marine fish tongue sole Cynoglossus bilineatus

2010 ◽  
Vol 7 (1) ◽  
pp. 55-64
Author(s):  
Ahmed Shihab Al-Hassoon ◽  
Nawres AbdulGhany Al-Faiez Qusay Hamid Al-Hamdany
Keyword(s):  
Marine Fish ◽  
Protein Concentrate ◽  
Fish Protein ◽  
Tongue Sole

Adaptation of the AOAC Fluorine Method for Determining Fluoride in Fish Protein Concentrate

1970 ◽  
Vol 53 (1) ◽  
pp. 3-6
Author(s):  
R. Bruce Klemm ◽  
Mary E. Ambrose Klemm
Keyword(s):  
Steam Distillation ◽  
Silica Sand ◽  
Official Method ◽  
Protein Concentrate ◽  
Fish Protein ◽  
Direct Titration ◽  
Modified Method ◽  
Aoac Official ◽  
Aoac Official Method

Abstract The AOAC official method, 24.029–24.035, for the determination of fluorine in foods was modified slightly to o btain quantitative recoveries of fluorine from samples of fish protein concentrate (FPC). The most important alterations include the use of steam distillation, the addition of finely ground silica sand in the distillation, a decrease in the distillation temperature, and the utilization of direct titration. Recoveries of fluoride added to FPC before ashing, using this modified method, averaged 96.0 ± 3.0%. Our results are in agreement with those of several other analysts who used a variety of methods.

scholarly journals Optimization of Betalain Pigments Extraction Using Beetroot by-Products as a Valuable Source

Inventions ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 50
Author(s):  
Silvia Lazăr (Mistrianu) ◽  
Oana Emilia Constantin ◽  
Nicoleta Stănciuc ◽  
Iuliana Aprodu ◽  
Constantin Croitoru ◽  
...  
Keyword(s):  
Citric Acid ◽  
Acid Concentration ◽  
Ethanol Concentration ◽  
Extraction Process ◽  
Extraction Time ◽  
Quadratic Model ◽  
Citric Acid Concentration ◽  
Operating Variables ◽  
Conventional Solvent Extraction ◽  
Optimized Conditions

(1) Background: This study is designed to extract the bioactive compounds from beetroot peel for future use in the food industry. (2) Methods: Spectrophotometry techniques analyzed the effect of conventional solvent extraction on betalains and polyphenolic compounds from beetroot peels. Several treatments by varying for factors (ethanol and citric acid concentration, temperature, and time) were applied to the beetroot peel samples. A Central Composite Design (CCD) has been used to investigate the effect of the extraction parameters on the extraction steps and optimize the betalains and total polyphenols extraction from beetroot. A quadratic model was suggested for all the parameters analyzed and used. (3) Results: The maximum and minimum variables investigated in the experimental plan in the coded form are citric acid concentration (0.10–1.5%), ethanol concentration (10–50%), operating temperature (20–60 °C), and extraction time (15–50 min). The experimental design revealed variation in betalain content ranging from 0.29 to 1.44 mg/g DW, and the yield of polyphenolic varied from 1.64 to 2.74 mg/g DW. The optimized conditions for the maximum recovery of betalains and phenols were citric acid concentration 1.5%, ethanol concentration 50%, temperature 52.52 °C, and extraction time 49.9 min. (4) Conclusions: Overall, it can be noted that the extraction process can be improved by adjusting operating variables in order to maximize the model responses.

Reduction in mercury content of fish protein concentrate by enzymic digestion

1973 ◽  
Vol 21 (6) ◽  
pp. 1116-1117 ◽  
Author(s):  
Michael C. Archer ◽  
Bruce R. Stillings ◽  
Steven R. Tannenbaum ◽  
Daniel I. C. Wang
Keyword(s):  
Mercury Content ◽  
Protein Concentrate ◽  
Fish Protein ◽  
Enzymic Digestion

Experimental Study on Concentrating Scandium by Leaching from Associated Scandium Ore

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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