scholarly journals Anti - UV Finishing of Cotton Fabrics with Lithospermum Extract

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Shengbo Liu ◽  
Lingxia Zhao ◽  
Dongxu Wu
Keyword(s):  
Cotton Fabric ◽  
Treatment Temperature ◽  
Optimum Process ◽  
Extraction Temperature ◽  
Uv Resistance ◽  
Bacteriostatic Effect ◽  
Impregnation Temperature ◽  
Bacterial Function ◽  
Temperature Time ◽  
Optimum Extraction

Lithospermum extract from Lithospermum is a kind of naphthoquinone, which has good anti-ultraviolet and anti-bacterial function. In this paper, the effects of different treatment temperature, time and ratio of liquid to liquid on the UV resistance of Lithospermum erythrorhizon extract were studied. The optimum extraction conditions were as follows: extraction temperature 60 ℃, extraction time 2 h, ratio of liquid to liquid of Lithospermum and ethanol 1:11. In this paper, the anti-UV finishing of cotton fabric was carried out, and the anti-ultraviolet and whiteness of the fabric were taken as the main indexes. The optimum process of the anti-UV finishing was as follows: the impregnation temperature was 70 ℃, the immersion time was 2h, 1:40. Compared with the uncoated cotton fabric, the fabric UPF value of the fabric was improved from 12.31 to 83.25, and the anti-ultraviolet performance was excellent, and it had certain bacteriostatic effect on Bacillus subtilis and Escherichia coli. 

scholarly journals Optimizing the extraction of antibacterial compounds from pineapple leaf fiber

2016 ◽  
Vol 11 (1) ◽  
pp. 391-395
Author(s):  
Zhikai Zhuang ◽  
Jin Zhang ◽  
Mingfu Li ◽  
Ganran Deng ◽  
Zhongqing Ou ◽  
...  
Keyword(s):  
Orthogonal Experiment ◽  
Inhibition Zone ◽  
Liquid Ratio ◽  
Bacteriostatic Effect ◽  
Antibacterial Compounds ◽  
Pineapple Leaf Fiber ◽  
Solid Liquid ◽  
Temperature Time ◽  
Optimum Extraction ◽  
Leaf Fiber

AbstractFive different solvents (petroleum ether, chloroform, ethyl acetate, acetone, and distilled water) were used to extract antibacterial compounds from pineapple leaf fiber. Compounds extracted using acetone showed the greatest antibacterial effect against Escherichia coli, measured by inhibition zone diameter. Three extraction parameters including temperature, time and solid-liquid ratio were optimized through orthogonal experiment based on single factor investigations for achieving maximum active substance extraction rate and bacteriostatic effect. Results showed that using acetone, the optimum extraction conditions for temperature, time and solid-liquid ratio were 45°C, 8 h, and 1:40 (g/ml), respectively.

Study on Extraction Technology of Polysaccharide from Pleurotus ostreatus

2013 ◽  
Vol 690-693 ◽  
pp. 1400-1403
Author(s):  
Hong Li Zhou ◽  
Li Cheng ◽  
Shi Lin
Keyword(s):  
Pleurotus Ostreatus ◽  
Orthogonal Test ◽  
Extraction Temperature ◽  
Liquid Ratio ◽  
Extraction Technology ◽  
Influence Of Temperature ◽  
Interactive Analysis ◽  
Solid Liquid ◽  
Temperature Time ◽  
Optimum Extraction

To study the extraction technology of polysaccharide from Pleurotus ostreatus. In order to explore the influence of temperature, time, and solid-liquid ratio on polysaccharide yield, single factor test had been done. The optimum extraction conditions was obtained though orthogonal test and interactive analysis: extraction temperature 50°C, extraction time 2h, and solid-liquid ratio 1:30. Under those conditions, the extraction rate of Pleurotus ostreatus polysaccharides was 28.79%.

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

Alkali Pre-Treatment Dyeing Technology for Hemp/Cotton/Polyester Knitted Fabric

2014 ◽  
Vol 915-916 ◽  
pp. 871-874 ◽  
Author(s):  
Xian Ping Zeng ◽  
Jin Fa Liu
Keyword(s):  
Cotton Fabric ◽  
Alkali Treatment ◽  
Orthogonal Experiment ◽  
Optimum Process ◽  
Knitted Fabric ◽  
Polyester Mesh ◽  
Liquor Ratio ◽  
Pre Treatment ◽  
C 50

In this paper, the hemp / cotton / polyester mesh knitted fabric (Han / C / T) is treated by alkali treatment, conventional dyeing and alkali pre-treatment dyeing. We have obtained the conclusion that alkali treatment improves the dyeing effect. Alkali pre-treatment dyeing was done after alkali treatment. The fabric dyeing effect is improved obviously. The optimum process come from orthogonal experiment (dyes 2.5% owf, Na2SO4 :30g/L, Na2CO3:10g/L, liquor ratio (1:50) and 90°C×50 min). Through this optimum process, dyeing effect for hemp / cotton / polyester mesh knitted fabric is close to the pure cotton fabric dyeing effect.

scholarly journals PENGARUH SUHU DAN WAKTU MASERASI TERHADAP AKTIVITAS ANTIOKSIDAN EKSTRAK KULIT BUAH KAKAO (Theobroma cacao L.)

2021 ◽  
Vol 9 (2) ◽  
pp. 186
Author(s):  
Dimas Anggi Ananta ◽  
G.P. Ganda Putra ◽  
I Wayan Arnata
Keyword(s):  
Antioxidant Capacity ◽  
Block Design ◽  
Natural Antioxidants ◽  
Effect Of Temperature ◽  
Total Phenolic ◽  
Extraction Temperature ◽  
Randomized Block Design ◽  
Cocoa Pod Husk ◽  
Effect On Yield ◽  
Temperature Time

Cocoa pod husk is a by-product of cocoa processing which is quite abundant and has not been used optimally. Cacao pod husk can be used more optimally by extracting, its content of polyphenol compounds which can be used as natural antioxidants. The aim of this study were to determine the effect of temperature and maceration time of cocoa pod husk extract as a source of antioxidants and to determine the best type of temperature and maceration time to produce cocoa pod husk extract as a source of antioxidants. This experiment was designed by using factorial randomized block design. The first factor was type of maceration temperature consisting of 30±2°C, 45±2°C and 60±2°C. The second factor was maceration time, which were done for 24, 36 and 48 h. The data were analyzed with analysis of variance and continued with the Tukey test. The results showed that the temperature and time of maceration had a very significant effect on yield, total phenolic and antioxidant capacity of cocoa pod husk extract. Interactions between treatments had a very significant effect on total phenolic and antioxidant capacity but did not significantly affect the yield of cocoa pod husk extract. The best treatment for producing cocoa pod husk extract as a source of antioxidants was using maceration temperature 60±2°C and maceration time for 36 h with yield characteristics 5,28±0,15%, total phenolic at 168.16±0,06 mg GAE/g and capacity antioxidant 130.94±0.84 mg GAEAC/g. Keywords: Cocoa pod husk, extraction, temperature, time, antioxidants.

scholarly journals Ultrasound-Assisted Deep Eutectic Solvent Extraction of Anthocyanins from Blueberry Wine Residues: Optimization, Identification, and HepG2 Antitumor Activity

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5456
Author(s):  
Hongkun Xue ◽  
Jiaqi Tan ◽  
Qian Li ◽  
Jintian Tang ◽  
Xu Cai
Keyword(s):  
Solvent Extraction ◽  
Antitumor Activity ◽  
Deep Eutectic Solvent ◽  
Extraction Process ◽  
Ultrasonic Power ◽  
Extraction Temperature ◽  
Brewing Process ◽  
Ultrasound Assisted ◽  
Optimum Extraction ◽  
Better Than

Blueberry wine residues produced during the wine-brewing process contain abundant anthocyanins and other bioactive compounds. To extract anthocyanins from blueberry wine residues more efficiently, a novel procedure of ultrasound-assisted deep eutectic solvent extraction (UADESE) was proposed in this work. The extraction process was optimized by response surface methodology coupled with genetic algorithm. The optimum extraction parameters to achieve the highest yield of anthocyanins (9.32 ± 0.08 mg/g) from blueberry wine residues by UADESE were obtained at water content of 29%, ultrasonic power of 380 W, extraction temperature of 55 °C, and extraction time of 40 min. The AB-8 macroporous resin combined with Sephadex LH-20 techniques was used to purify the crude extract (CE) obtained under optimum extraction conditions and analyze the anthocyanins composition by HPLC-ESI-MS/MS. The cyanidin-3-rutinoside with purity of 92.81% was obtained. The HepG2 antitumor activity of CE was better than that of the purified anthocyanins component. Moreover, CE could increase the intracellular reactive oxygen species levels and the apoptosis, and arrest HepG2 cells in the S phases. These findings provided an effective and feasible method for anthocyanins extraction, and reduced the environmental burden of this waste.

scholarly journals Study on the Extraction and Antitumor Activity of Achyranthes Bidentata Polysaccharide

2018 ◽  
Vol 10 (2) ◽  
pp. 23
Author(s):  
Linsong Yang ◽  
Yuhuan Shen ◽  
Fang Wang
Keyword(s):  
Therapeutic Agent ◽  
Annexin V ◽  
Extraction Temperature ◽  
Double Staining ◽  
Dna Ladder ◽  
Achyranthes Bidentata ◽  
Mtt Method ◽  
Anti Tumor Activity ◽  
Optimum Extraction ◽  
Yield And Purity

Achyranthes bidentata polysaccharides (ABPS), a major active ingredient of Achyranthes bidentata, has many kinds of well-known pharmacological activity, such as anti-coagulation, indirect anti-tumor, anti-aging and hypoglycemic effect, and also have certain effects on the immune system. However, the direct anti-tumor activity of ABPS remain unclear. In this paper, ABPS was efficiently isolated from Achyranthes bidentata adopted orthogonal experimental method, and then its anti-tumor effect on LTEP-a-2 cells was investigated. LTEP-a-2 cells were treated with various concentrations of ABPS (0, 0.2, 0.4, 0.6, 0.8 and 1 mg/mL) for 48h. Subsequently, cell viability was analyzed by MTT method and the effects of ABPS on the apoptosis of LTEP-a-2 cells was explored by DNA ladder, PI and Annexin V FITC/PI double staining. The results showed that the optimum extraction conditions of ABPS was that the extraction temperature at 90oC, 1:40(W/V) of solid to liquid, and extraction time 4 h. In addition, the yield and purity of ABP was measured up to 15.52% and 97.21% respectively. Furthermore, ABPS significantly inhibited the proliferation and induced the apoptosis of LTEP-a-2 cells. So ABPS might be utilized as a new potential therapeutic agent against Lung Adenocarcinoma.

Optimum Process for Extraction of Total Flavonoids from Castor Leaves by Orthogonal Test

2014 ◽  
Vol 989-994 ◽  
pp. 1029-1032
Author(s):  
Yi Hua Jiang ◽  
Xin Long Jiang ◽  
Cheng Gang Cai
Keyword(s):  
Ethanol Concentration ◽  
Orthogonal Test ◽  
Optimum Process ◽  
Total Flavonoids ◽  
Extraction Temperature ◽  
Optimal Conditions ◽  
Liquid Ratio ◽  
Test Methodology ◽  
Maximal Yield ◽  
Solid Liquid

Optimization of total flavonoid extraction from Castor leaves using orthogonal test methodology with the factors of ethanol concentration, extraction temperature,extraction time,solid/liquid ratio on the yield of total flavonoids were investigated.The results showed that optimum extracting conditions of total flavonoids from castor leaves were as follows: adding 1:40 g·mL-1 of 30% alcohol and extracting for 30 min,extraction temperature 70°C. Under the optimal conditions, the maximal yield of flavonoids was of 1.81%.

Processing effects on high Tc properties of YBa2Cu3O7−x films from carboxylate solution precursors

1993 ◽  
Vol 8 (2) ◽  
pp. 261-267 ◽  
Author(s):  
Peir-Yung Chu ◽  
Isabelle Campion ◽  
Relva C. Buchanan
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Superconducting Films ◽  
Treatment Temperature ◽  
Film Properties ◽  
High Tc ◽  
Post Annealing ◽  
Oriented Films ◽  
Processing Effects ◽  
Temperature Time

Heat-treatment temperature/time and ambient effects on the properties of YBa2Cu3O7−x superconducting films derived from carboxylate precursors were investigated. The thin films were processed under O2, N2, or N2/O2 mixed atmosphere. The use of N2 or N2-rich atmosphere facilitated the 123 phase formation, grain growth, and orientation due to liquid phase assist sintering. Thin films with Tc(zero) = 87.8 and Jc > 105 A/cm2 at 77 K were prepared under such atmosphere at T ≤ 920 °C. Higher temperatures were required for thin films processed under O2 atmosphere and inferior transport properties were obtained. Processing above the melting temperature resulted in highly oriented films with dense microstructures and large grains, but significant post annealing was needed to obtain good film properties.

Extraction of Gasoline Residues Using a Adsorption Tube

2014 ◽  
Vol 536-537 ◽  
pp. 1421-1425
Author(s):  
Shu Jun Liu ◽  
Li Li Yu ◽  
Wei Gao ◽  
Bai Wang
Keyword(s):  
Vapor Sensing ◽  
Response Profile ◽  
Effects Of Temperature ◽  
Temperature Time ◽  
Optimum Extraction

This paper describes the application of a adsorption tube to extract the gasoline residues. Then the gasoline residues were detected by vapor sensing arrays. The response profile of the array generated a reproducible pattern unique to gasoline that could be used to reflect subsequent sensor responses. The effects of temperature, time and adsorption tube types on the extraction of gasoline residues has been investigated. The results show that 120°C, 1.5min, and TENAX-TA adsorption tube were the optimum extraction conditions. Using the developed method can be used to extract gasoline residues in the fire.

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