scholarly journals Study on Aqueous Enzymatic Extraction Process of Common Pistache Oil

2021 ◽  
Vol 251 ◽  
pp. 02058
Author(s):  
Feng Xuehua ◽  
Tao Ali ◽  
Song Zurong ◽  
Gong Panpan
Keyword(s):  
Ph Value ◽  
Orthogonal Experiment ◽  
Extraction Process ◽  
Optimal Time ◽  
Process Conditions ◽  
Optimal Process ◽  
Enzymatic Extraction ◽  
Hydrolysis Time ◽  
Aqueous Enzymatic Extraction ◽  
The Common

The aqueous enzymatic method was applied to extract the common pistache oil and the optimal extraction process conditions were identified. By observing the effect of enzymatic hydrolysis time, pH value, temperature on aqueous enzymatic extraction process and performing the orthogonal experiment based on the single factor test, the optimal process parameters were obtained, namely, the optimal time, temperature, and pH value were respectively 3 h, 50℃, and 7 with a final extraction rate of 25.38 %.

Research on Anti-Felting Finishing Process of Wool Knitted Fabric with Protease

2011 ◽  
Vol 383-390 ◽  
pp. 5492-5495 ◽  
Author(s):  
Hua E Wang
Keyword(s):  
Ph Value ◽  
Orthogonal Experiment ◽  
Acid Protease ◽  
Process Conditions ◽  
Knitted Fabric ◽  
Optimal Process ◽  
Technical Parameters ◽  
Finishing Process ◽  
Protease Treatment ◽  
Energy Saving Technology

In this paper, acid protease treatment was studied on anti-felting finishing of wool knitted fabric and the optimal process conditions were obtained by orthogonal experiment. The technical parameters were hydrogen peroxide concentration 40mL/L, temperature 45°C, time 45min, pH value 8, concentration of protease 5 % (owf), pH value 5, temperature 40°C and time 35min. Through this process, the felt resistance property of wool knitted fabric has been improved greatly. Because of low temperature, energy consumption, environmental pollution, this process belongs to environmental protection and energy saving technology.

Study on the Enzyme Desizing Process for Cotton Fabric Using Ultrasonication

2011 ◽  
Vol 331 ◽  
pp. 261-264 ◽  
Author(s):  
Qi Ming Zhao ◽  
Shan Yan Zhang
Keyword(s):  
Cotton Fabric ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Research Result ◽  
Strength Loss ◽  
Cotton Fabrics ◽  
Optimum Process ◽  
Process Conditions ◽  
Fabric Strength ◽  
Enzyme Dosage

The auxiliary devices of ultrasonic treatment was designed and manufactured. The cotton fabric was desized using 2000L desizing enzyme with the conventional enzyme desizing process and ultrasonic enzyme desizing process respectively. Through the orthogonal experiment, the optimum process conditions of conventional enzyme desizing process and ultrasonic enzyme desizing process were determined. For the conventional enzyme desizing process, the optimized desizing conditions of cotton fabrics were: desizing enzyme dosage was 1.5g/l, temperature was 80°C, PH value was 6, and time was 60mins. The optimum process conditions of ultrasonic enzyme desizing process were: desizing enzyme dosage was 1.5g/l, temperature was 50°C, PH value was 6 and time was 45minutes. The research result indicates that, under the same desizing condition, ultrasonication can improve the desizing percentage and whiteness of cotton fabric, but the fabric strength loss increases slightly. And for the same required desizing percentage, the ultrasonic enzyme desizing process saved time and reduced the temperature of experiments compared with traditional enzyme desizing process

scholarly journals Equilibrium modeling of mono and binary sorption of Cu(II) and Zn(II) onto chitosan gel beads

2016 ◽  
Vol 37 (4) ◽  
pp. 485-501 ◽  
Author(s):  
Józef Nastaj ◽  
Małgorzata Tuligłowicz ◽  
Konrad Witkiewicz
Keyword(s):  
Metal Ion ◽  
Ph Value ◽  
Experimental Studies ◽  
Process Conditions ◽  
Optimal Process ◽  
Sorption Data ◽  
Gel Beads ◽  
Two Component ◽  
Equilibrium Data ◽  
Chitosan Gel

Abstract The objective of the work are in-depth experimental studies of Cu(II) and Zn(II) ion removal on chitosan gel beads from both one- and two-component water solutions at the temperature of 303 K. The optimal process conditions such as: pH value, dose of sorbent and contact time were determined. Based on the optimal process conditions, equilibrium and kinetic studies were carried out. The maximum sorption capacities equaled: 191.25 mg/g and 142.88 mg/g for Cu(II) and Zn(II) ions respectively, when the sorbent dose was 10 g/L and the pH of a solution was 5.0 for both heavy metal ions. One-component sorption equilibrium data were successfully presented for six of the most useful three-parameter equilibrium models: Langmuir-Freundlich, Redlich-Peterson, Sips, Koble-Corrigan, Hill and Toth. Extended forms of Langmuir-Freundlich, Koble-Corrigan and Sips models were also well fitted to the two-component equilibrium data obtained for different ratios of concentrations of Cu(II) and Zn(II) ions (1:1, 1:2, 2:1). Experimental sorption data were described by two kinetic models of the pseudo-first and pseudo-second order. Furthermore, an attempt to explain the mechanisms of the divalent metal ion sorption process on chitosan gel beads was undertaken.

Aqueous Enzymatic Extraction of Rapeseed Oil and Protein from Dehulled Cold-pressed Double-low Rapeseed Cake

2012 ◽  
Vol 8 (3) ◽  
Author(s):  
Yan Xing Niu ◽  
Wenlin Li ◽  
Jun Zhu ◽  
Qingde Huang ◽  
Mulan Jiang ◽  
...  
Keyword(s):  
Incubation Time ◽  
Cell Structure ◽  
Extraction Process ◽  
Enzyme Concentration ◽  
Extraction Yield ◽  
Enzymatic Extraction ◽  
Aqueous Enzymatic Extraction ◽  
Rapeseed Cake ◽  
Cold Press ◽  
Cold Pressed

Abstract The oil and protein of dehulled cold-pressed double-low rapeseed cake was extracted by an aqueous enzymatic process. The rapeseed cake was treated by the chosen combined enzymes of Viscozyme L and Alcalase 2.4L (VLA,1:1,w/w). Preliminary experiments and Response Surface Methodology (RSM) were used to study the effects of enzyme concentration, incubation time and water-to-cake ratio on the extraction yield of oil and protein. This is how the desirable conditions were obtained. Transmissive electron microscope photo showed that after cold-pressing the cell structure of rapeseed was partly damaged while dehulling had little effect on the cell structure of rapeseed. In RSM experiments water-to-cake ratio showed significant effects on the extraction of oil and protein (P<0.05),while incubation time only showed significant effects on protein yield (P<0.05).The desirable conditions were as follows: 1.0% concentration (w/w) of VLA; water-to-cake ratio(w/w),6:1; 80 min incubation time. Under this condition, the extraction yield of protein and oil were 82.10% and 71.89%, respectively. Through combining both the cold-press and the aqueous enzymatic processes together, the total oil yield reached 91.6%, which is higher than the normal cold-press process or the aqueous enzymatic extraction process alone.

scholarly journals Preparation of red elemental nanoselenium by Arabic gum template method

2021 ◽  
Vol 267 ◽  
pp. 02014
Author(s):  
Qingbing Guo ◽  
Xuegui Lin ◽  
Ming He ◽  
Guojie Wu
Keyword(s):  
Particle Size ◽  
Mass Fraction ◽  
Orthogonal Experiment ◽  
Nanometer Scale ◽  
Process Conditions ◽  
Elemental Selenium ◽  
Optimal Process ◽  
Size Change ◽  
Arabic Gum ◽  
Particle Size Analyzer

Red elemental nanoselenium was prepared by reducing sodium selenite with ascorbic acid using Arabic resin as template in this study. The factors effecting on the particle size change of nanoselenium such as reaction time, reactant concentration, template mass fraction and reaction temperature were studied. The orthogonal experiment L9(34) was designed to determine the optimal process conditions. The elemental nanoselenium was characterized by IR and particle size analyzer. The results showed that the stable red elemental selenium with nanometer scale was prepared.

scholarly journals Study on Extraction of Peanut Protein and Oil Bodies by Aqueous Enzymatic Extraction and Characterization of Protein

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Chen Liu ◽  
Lihua Hao ◽  
Fusheng Chen ◽  
Chenxian Yang
Keyword(s):  
Molecular Weight ◽  
Cell Wall ◽  
Optimal Condition ◽  
Weight Distribution ◽  
Extraction Process ◽  
Peanut Protein ◽  
Enzyme Hydrolysis ◽  
Oil Bodies ◽  
Enzymatic Extraction ◽  
Aqueous Enzymatic Extraction

Cell wall degrading enzymes break down the cell wall by degrading the main cell wall components and destroying structure of the cell wall without influencing the protein. Effects of various enzymes (Viscozyme® L, cellulase, hemicellulase, and pectinase) on the molecular weight distribution of peanut protein and yield of peanut protein and oil bodies during an aqueous enzymatic extraction process were investigated in this study. The molecular weight distribution of peanut protein was not changed, and Viscozyme® L was selected to assist peanut protein and oil bodies extraction by the aqueous extraction process. The aqueous enzymatic extraction process was optimized by a signal factor experiment and response surface methodology, and the optimal condition was enzyme hydrolysis temperature of 52°C, solid-liquid ratio of 1 : 4, enzyme concentration of 1.35%, and enzyme hydrolysis time of 90 min. A peanut protein yield of 78.60% and oil bodies yield of 48.44% were achieved under the optimal condition. Compared with commercial peanut protein powder (CPPP), the solubility and foaming properties of peanut protein powder obtained by aqueous enzymatic extraction (AEEPPP) were a little lower. However, the functional properties of foam stability, emulsifying activity, emulsifying stability, water holding capacity, and oil holding capacity of AEEPPP were better than that of CPPP.

Effects of Process Conditions on Properties of Nano-Magnetic Fluid

2011 ◽  
Vol 194-196 ◽  
pp. 700-703
Author(s):  
Bing Chen ◽  
Yu Guang Fan
Keyword(s):  
Saturation Magnetization ◽  
Sodium Oleate ◽  
Magnetic Fluid ◽  
Magnetic Particles ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Process Condition ◽  
Nano Particles ◽  
Process Conditions ◽  
Co Precipitation

In order to analyze the influences of process condition on kerosene-based Fe3O4, which are prepared in chemical co-precipitation, orthogonal experiment was used. How process condition influenced the size of nano-particles and saturation magnetization was studied, and the best process condition as 40ml•min-1 NaOH adding speed, 10ml•min-1 sodium oleate adding speed, 45°C reaction temperature, 15min holding time and pH value of 2 of coating sodium oleate was obtained. The performance of magnetic particles was characterized by transmission electron microscopy (TEM) and WSM vibration magnetometer. The diameter of Fe3O4 nano-particles was less than 10nm, saturation magnetization was 2.66×104A•m-1, viscosity of nano-magnetic fluid was 18mPa•s, and density was 1.13×103kg•m-3. This research enhanced the foundation of using nano-magnetic fluid.

Application of Polycarboxylic Acid Anti-Crease Finishing Agent for Silk

2014 ◽  
Vol 936 ◽  
pp. 1605-1608 ◽  
Author(s):  
Lei Xu
Keyword(s):  
Magnesium Chloride ◽  
Orthogonal Experiment ◽  
High Strength ◽  
Process Conditions ◽  
Polycarboxylic Acid ◽  
Optimal Process ◽  
Finishing Process ◽  
Finishing Agent ◽  
Silk Fabrics ◽  
Strength Retention

Polycarboxylic acid anti-crease finishing agent is used to finish silk. The optimal finishing process was selected through orthogonal experiment. The optimal process conditions were as follows. The optimal concentration of both finishing agent Y and magnesium chloride was 100g/L. The optimal baking temperature and baking time were 160 °C and 3min, respectively. The results show that the silk fabrics treated by finishing agent Y had high strength retention and washing fastness. In addition, the effect of ant-crease finishing on the whiteness of fabrics was small.

scholarly journals Aqueous Extraction of Seed Oil from Mamey Sapote (Pouteria sapota) after Viscozyme L Treatment

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 748
Author(s):  
Veymar G. Tacias-Pascacio ◽  
Arnulfo Rosales-Quintero ◽  
Rafael C. Rodrigues ◽  
Daniel Castañeda-Valbuena ◽  
Pablo F. Díaz-Suarez ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Oxidative Stability ◽  
Seed Oil ◽  
Extraction Process ◽  
Agitation Rate ◽  
Enzymatic Extraction ◽  
Aqueous Enzymatic Extraction ◽  
Conventional Solvent Extraction ◽  
Central Composite ◽  
Environmentally Friendly Method

In this study, aqueous enzymatic extraction (AEE) was evaluated during the process of obtaining oil from mamey sapote seed (OMSS). Viscozyme L enzyme complex was used at pH 4 and 50 °C during the optimization of the extraction process by central composite design and response surface methodology. Optimal conditions were: 3.5% (w/w) of enzyme (regarding the seed weight), 5.5 h of incubation time, 235 rpm of agitation rate, and 1:3.5 of solid-to-liquid ratio. These conditions enabled us to obtain an OMSS yield of 66%. No statistically significant differences were found in the fatty acid profile and physicochemical properties, such as the acid and iodine values and the percentage of free fatty acids, between the oil obtained by AEE or by the conventional solvent extraction (SE). However, the oxidative stability of the oil obtained by AEE (11 h) was higher than that obtained by SE (9.33 h), therefore, AEE, in addition to being an environmentally friendly method, produces a superior quality oil in terms of oxidative stability. Finally, the high oil content in mamey sapote seed, and the high percentage of oleic acid (around 50% of the total fatty acid) found in this oil, make it a useful edible vegetable oil.

scholarly journals The separation of microscale HA in aqueous solution by foam separation technique

2019 ◽  
Vol 21 (4) ◽  
pp. 66-71
Author(s):  
Shao Wenyao ◽  
Gong Xiao ◽  
Cui Shuming ◽  
Lin Ying ◽  
Lu Yinghua ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Recovery Rate ◽  
Orthogonal Experiment ◽  
Extraction Process ◽  
Separation Technique ◽  
Enrichment Ratio ◽  
Liquid Volume ◽  
Optimum Process ◽  
Process Conditions ◽  
Foam Separation

Abstract Hyaluronic acid (HA) has important applications in fields of health care products, cosmetics and clinical medical. However, the unique physiological properties of HA make cost of its traditional separation and extraction process relatively high. Foam separation technique has simple, gentle and efficient advantages on the separation of substances with surface activity by using bubbles as the separation medium. In this paper, natural surfactant CocamideBetaine (CAPB) was used as a foaming agent to explore the technology of microscale HA in aqueous solution by foam separation. The optimum process conditions were determined based on the recovery rate and enrichment ratio of HA by single factor and orthogonal experiment: at room temperature, pH = 7, separating air velocity (v) = 350 mL/min, HA concentration (CHA) = 50 mg/L, adding liquid volume (V) = 200 mL, collecting time (tcol) = 10 min, CAPB concentration (CCAPB) = 0.035 g/L. Under these conditions, HA enrichment ratio (E) equals 6.821 and HA recovery rate (R) equals 66.425%.

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