Optimizing the Extraction Process of Rubusoside from the Rubus Suavissimus: A Cellulase Pretreatment Approach

2014 ◽  
Vol 707 ◽  
pp. 144-148 ◽  
Author(s):  
Xiao Hong Zhu ◽  
Ming Xia ◽  
Chun Xing Yang
Keyword(s):  
Optimal Condition ◽  
Extraction Efficiency ◽  
Ph Value ◽  
Extraction Process ◽  
Orthogonal Test ◽  
Single Factor ◽  
Enzyme Substrate ◽  
Substrate Ratio ◽  
A New Technique ◽  
Single Factor Experiment

The paper discussed the extraction process of rubusoside from Rubus suavissimus using a new technique named cellulase pretreatment approach. First, the parameters of cellulose which generate the optimized condition for the extraction of rubusoside from Rubus suavissimus were identified. Under the most optimal condition, the extraction efficiency is maximal. The parameters include pH value,temperature and enzyme-substrate ratio. Second, single factor experiment and an orthogonal test then could be conducted to obtain the optimized condition for the extraction process with the assistances of cellulose. The parameters under the optimized condition were determined as following: ethanol as solvent, 1.2% cellulose, 40°C, pH 4.8 and duration 25 minutes. The result shows that the extraction efficiency of rubusoside is 10.81%.

Optimization of Extraction Conditions of Essential Oil from Latifolia miq Roots and Stems with Supercritical CO2 Fluid

2013 ◽  
Vol 726-731 ◽  
pp. 4512-4516
Author(s):  
Ren Yong Gu ◽  
Zhi Ping Li
Keyword(s):  
Essential Oil ◽  
Optimum Condition ◽  
Raw Materials ◽  
Extraction Process ◽  
Orthogonal Test ◽  
Single Factor ◽  
Extraction Condition ◽  
Optimum Extraction ◽  
Optimum Extraction Condition

Studying on the extraction process of essential oil from Latifolia Miq roots and stems by Supercritical CO2 extraction. The effects on extracting ratio were investigated by using single factor test, adding content of grinding fineness of raw materials,extracting temperature, extracting pressure and extracting time. The optimum extraction condition was determined by orthogonal test. The results showed that the optimum condition of the extraction was as follows: grinding fineness 90 mesh, extracting temperature 45 °C, extracting pressure 20 MPa and extracting time 2.5 h.

Dyeing Properties of Tussah Silk Fabric with Indigo Naturalis and Turmeric

2011 ◽  
Vol 331 ◽  
pp. 352-355 ◽  
Author(s):  
Xu Hao ◽  
Yan Hua Lu
Keyword(s):  
Ph Value ◽  
Relative Concentration ◽  
Reduction Process ◽  
Silk Fabric ◽  
Single Factor ◽  
Dyeing Properties ◽  
Dyeing Process ◽  
Indigo Naturalis ◽  
Grade 3 ◽  
Single Factor Experiment

Two vegetable dyes of indigo naturalis and turmeric were combined on dyeing tussah silk fabric with two steps. The first step is dyeing the silk fabric with indigo naturalis by reduction process, and then dyed with turmeric by direct dyeing process. The results of single factor experiment on the indigo naturalis dyed tussah silk fabric dyeing with turmeric indicated that the relative concentration, pH value, dyeing temperature, and dyeing time had effect to a certain extent on the over dyeing. The dyeing conditions were determined by the above single factor experiment. The rubbing fastness and washing resistance of the dyed silk fabric could achieve to grade 3 more than grade 3.

Experimental Study on Sugarcane Top Chopper

2021 ◽  
Vol 37 (2) ◽  
pp. 243-250
Author(s):  
Jiwei Hu ◽  
Shaochun Ma ◽  
Shili Gao ◽  
Jing Bai ◽  
Fenglei Wang ◽  
...  
Keyword(s):  
Orthogonal Experiment ◽  
Orthogonal Test ◽  
Critical Parameters ◽  
List Type ◽  
Optimal Parameters ◽  
Single Factor ◽  
Machine Performance ◽  
Feeding Speed ◽  
Working Performance ◽  
Single Factor Experiment

HighlightsThis article focuses on the sugarcane top chopper.The influence of three factors on the experimental indexes was studied.The optimal parameters combination of working performance was obtained.Abstract. In the process of sugarcane harvesting, sugarcane tops are cut off by the chopper and directly thrown into the field. A small percentage of sugarcane tops are picked and collected to feed livestock. Therefore, it is meaningful to develop an effective sugarcane top chopper which is used to harvest sugarcane tops before harvesting sugarcane stalk harvesting. In this study, a sugarcane top chopping platform was fabricated to investigate critical parameters such as chopping speed (CS), top feeding speed (FS), and cutting drum gap (DG) on the machine performance. In evaluating the sugarcane top chopper, three single factor experiment and one orthogonal experiment were carried out. The single factor test was used to examine the effect of CS, FS and DG on the chopping performance of the machine. According to orthogonal test, the comprehensive influence order was determined: cutting drum gap > chopping speed > top feeding speed. The optimal parameters combination for good working performance of the machine was obtained: chopping speed was 750 rpm, top feeding speed was 1.2 m·s-1, and cutting drum gap was 20 mm. The relationships between the chopping performance and the three critical factors were examined and analyzed to provide theoretical basis for the development of a sugarcane top chopper. Keywords: Chopping performance, Orthogonal test, Single factor test, Sugarcane top chopper, Variance analysis.

Application of Foam Separation Technology to Tea Saponin Extraction

2014 ◽  
Vol 997 ◽  
pp. 173-177 ◽  
Author(s):  
Yu Qiong Wu
Keyword(s):  
Ph Value ◽  
Optimal Operation ◽  
Enrichment Ratio ◽  
Liquid Volume ◽  
Single Factor ◽  
Separation Technology ◽  
Foam Separation ◽  
Tea Saponin ◽  
Operation Conditions ◽  
Single Factor Experiment

In this paper, a purity of 52.58% crude tea saponin as the research object, through the foam separation technology, tea saponin extraction process was researched. The feed concentration, gas flow rate, liquid volume and pH value were studied through single factor experiment, the rate of recovery and enrichment ratio as evaluation indexes, the single factor experiment results are analyzed, The design of L9 (34) orthogonal test was applied to confirm the optimum condition: the initial feed solution concentration 0.3mg/ml, air velocity 100ml/min, pH value of 6.5, liquid volume 35ml, enrichment ratio of 3.7896, the recovery rate 82.06%. The purity of the product reached 89.48% under the optimal operation conditions. The results showed that the foam separation techniques is applicable to tea saponin extraction.

scholarly journals Indirect anodic oxidation applied for treatment of simulated wastewater containing Cationic Red X-GRL and Disperse Red 3B

2016 ◽  
Vol 7 (2) ◽  
pp. 197-204
Author(s):  
Bo Yang ◽  
Yue Xiang Li ◽  
Jiao Song
Keyword(s):  
Anodic Oxidation ◽  
Ph Value ◽  
Oxygen Demand ◽  
Electrolysis Time ◽  
Single Factor ◽  
Chemical Oxygen Demand Removal ◽  
Ring Structures ◽  
Simulated Wastewater ◽  
Single Factor Experiment ◽  
Dyes Degradation

The treatment of simulated wastewater containing Cationic Red X-GRL (X-GRL) or Disperse Red 3B (DR-3B) dye was carried out by indirect anodic oxidation, using Ti/SnO2 electrodes as the anode. The influences of pH value, voltage, electrolysis time and sodium chloride dosage on the degradation performance were studied by single factor experiment. Furthermore the nitrogen states and UV-Vis spectra in dyes degradation were analyzed. The results showed that under the optimum condition (pH = 3, voltage = 20 V, NaCl = 2.5 g/L), the decolorization and chemical oxygen demand removal of X-GRL were 98% and 67%, respectively; and those of DR-3B were 51% and 61%, respectively. The azo double bond conjugated system in X-GRL is much more easily destroyed than the anthraquinone conjugated system in DR-3B; the aryl ring structures of them can be partially degraded.

Study on Synthesis of Preservative Benzyl Methyl Fumarate

2011 ◽  
Vol 236-238 ◽  
pp. 1970-1973
Author(s):  
Na Li ◽  
Zi Ping Zhu
Keyword(s):  
Maleic Anhydride ◽  
Benzyl Alcohol ◽  
Production Rate ◽  
Raw Materials ◽  
Orthogonal Test ◽  
Molar Ratio ◽  
Optimal Conditions ◽  
Single Factor ◽  
Single Factor Experiment

Using maleic anhydride, benzyl alcohol and methanol as raw materials, a new preservative benzyl methyl fumarate containing α, β-unsaturated carbonyl structure was prepared. Based on the single factor experiment, the results of orthogonal test showed that the optimal conditions for the reaction was 4 h time, temperature at 65 °C, and with molar ratio of fumarate acid to methanol at 1:5. The production rate was 65.53%.

Study on Adsorption of Vinasse for Ag+

2013 ◽  
Vol 726-731 ◽  
pp. 2956-2959
Author(s):  
Yan Chen ◽  
Jing Wang ◽  
Rong Rong Su ◽  
Jia Quan Rao ◽  
Xiao Yan Lin
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Ph Value ◽  
Freundlich Isotherm ◽  
Ion Concentration ◽  
Single Factor ◽  
Equilibrium Sorption ◽  
Before And After ◽  
Single Factor Experiment ◽  
Maximum Removal

Effects of parameters including pH value, temperature, absorbent dosage, initial ion concentration, and absorbed time, on the removal efficiency of Ag+ from aqueous solution were investigated through single factor experiment. Vinasse before and after adsorption were characterized by IR. The maximum removal efficiency of Ag+ on vinasse is 97%. The equilibrium sorption is well demonstrated by Freundlich isotherm model.

The Study of Bleaching Silk Sanitary Materials

2011 ◽  
Vol 175-176 ◽  
pp. 765-768
Author(s):  
Wu Wen Wang ◽  
Ji Hong Lao ◽  
Ya Qin Yang
Keyword(s):  
Hydrogen Peroxide ◽  
Sodium Silicate ◽  
Ph Value ◽  
Raw Materials ◽  
Orthogonal Test ◽  
Experimental Program ◽  
Single Factor ◽  
Silicate Concentration ◽  
Bleaching Process ◽  
Peroxide Bleaching

The silk Sanitary Materials in hydrogen peroxide bleaching process, various experimental factors affect on the raw materials’ whiteness and tension. And through the single factor experiments and orthogonal test research and analysis, the significant influencing order of the whiteness of silk fiber is: temperature, concentration of hydrogen peroxide, and bleaching time; the significant influencing order of breaking tension is: bleaching time, temperature, and concentration of hydrogen peroxide. The optimum experimental program is as follows: hydrogen peroxide concentration of 22.5g / L, bleaching temperature of 80 °C, bleaching time, 60min, PH value of 9, sodium silicate concentration of 11.25g / L.

Research on the Extraction and Purification of Dihydromyricetin from Ampelopsis grossedentata

2014 ◽  
Vol 1033-1034 ◽  
pp. 738-743
Author(s):  
Jie Zhi Guo ◽  
Hao Guo Tang ◽  
Hong Juan Yao ◽  
Yan Mei Zhang
Keyword(s):  
Recovery Rate ◽  
Extraction Method ◽  
Orthogonal Test ◽  
Extraction Temperature ◽  
Single Factor ◽  
Extraction Condition ◽  
Extraction And Purification ◽  
Purification Methods ◽  
Ampelopsis Grossedentata ◽  
Single Factor Experiment

Extracting dihydromyricetin from Ampelopsis grossedentata by water extraction method. The orthogonal test and single factor experiment were used to optimize the best extraction condition. The ratio of liquid and material is 20:1, extraction time is 90min, extraction temperature is 90°C,holding time is 1d. The results of comparison between two purification methods show: Purify with acetone and recrystallization with water is better. The purity of dihydromyricetin is high to 98%, recovery rate was 59.2%.

Research on Bleaching Processes of Natural Cane Fiber by Ultrasonic

2012 ◽  
Vol 550-553 ◽  
pp. 565-568
Author(s):  
Zhen Xu Sun ◽  
Yu Ping Zhao ◽  
Ruo Yuan Song ◽  
Yong Fang Qian
Keyword(s):  
Ph Value ◽  
Processing Parameters ◽  
Ultrasonic Frequency ◽  
Single Factor ◽  
Bleaching Effect ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ultrasonic Time ◽  
Single Factor Experiment ◽  
Scanning Electron

The effects of ultrasonic on bleaching of cane fiber were discussed in this paper. Ultrasonic frequency, ultrasonic time, the concentration of the hydrogen peroxide, temperature and pH value were optimized by the single factor experiment. The bleached fiber was analyzed by X-ray diffraction and Scanning electron microscope. The results showed the optimum processing parameters as follows: ultrasonic time 40 min, ultrasonic frequency 33 KHz (first 20 min); 55 KHz (second 20 min), temperature 90°C and the concentration of the hydrogen 30 ml/L, pH value 10.5. In the above conditions, the best bleaching effect was achieved.

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