scholarly journals Ultrasound-homogenization-assisted extraction of polyphenols from coconut mesocarp: Optimization study

2021 ◽  
Vol 78 ◽  
pp. 105739
Author(s):  
Jing Yang ◽  
Nana Li ◽  
Chunyu Wang ◽  
Tao Chang ◽  
Huichuan Jiang
Keyword(s):  
Optimization Study ◽  
Assisted Extraction ◽  
Coconut Mesocarp

Optimization of Ultrasonic-Assisted Extraction of Polyphenolic and Flavonoids from Labisia pumila

2017 ◽  
Vol 890 ◽  
pp. 167-170 ◽  
Author(s):  
Jessinta Sandanasamy ◽  
Mashitah M. Yusoff ◽  
Jolius Gimbun
Keyword(s):  
Residence Time ◽  
Colorimetric Assay ◽  
Total Solid ◽  
Extraction Yield ◽  
Aluminium Chloride ◽  
Solid Ratio ◽  
Optimization Study ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Central Composite

This work presents an optimization study of polyphenol extraction from L. pumila with aid of sonication. The polyphenol content was evaluated using Singleton’s method and aluminium chloride colorimetric assay. The two level factorial design [2LF] was used to screen the significance of the extraction parameters. The results proposed that the polyphenols extraction are mainly affected by the total solid ratio [TSR] and residence time. The highest flavonoid content of 31.79 mg QE/ g DW and phenolic content of 19.65 mg GA/g DW was obtained from 80% and 10% aqueous ethanol [EtOH], respectively via 2LF design. Three most important parameters [TSR, residence time and amplitude] were then further optimized thru central composite design. The highest simultaneous flavonoid [21.77 mg QE/ g DW] and phenolic [21.86 mg GA/g DW] extraction yield were attained from the probe sonicator extraction with desirability of 0.998 at 10% aqueous EtOH with TSR 0.01, residence time of 13 min and amplitude of 55%.

Extraction of triterpenoids and phenolic compounds from Ganoderma lucidum: optimization study using the response surface methodology

2018 ◽  
Vol 9 (1) ◽  
pp. 209-226 ◽  
Author(s):  
Taofiq Oludemi ◽  
Lillian Barros ◽  
M. A. Prieto ◽  
Sandrina A. Heleno ◽  
Maria F. Barreiro ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Phenolic Compounds ◽  
Response Surface ◽  
Ganoderma Lucidum ◽  
Extraction Techniques ◽  
Ultrasound Assisted Extraction ◽  
Optimization Study ◽  
Assisted Extraction ◽  
Ultrasound Assisted

The extraction of triterpenoids and phenolic compounds from Ganoderma lucidum was optimized by response surface methodology, using heat and ultrasound assisted extraction techniques.

Innovative Extraction Techniques for the Optimum Extraction of Phenolic Compounds from Peanut Meal and Evaluation of Their Biological Activities

2019 ◽  
Vol 4 (2) ◽  
Keyword(s):  
Phenolic Compounds ◽  
Carcinoma Cell ◽  
Biological Activities ◽  
Peanut Meal ◽  
Ultrasound Assisted Extraction ◽  
Carcinoma Cell Lines ◽  
Assisted Extraction ◽  
Phenolic Extract ◽  
Ultrasound Assisted ◽  
Water Ratio

There is a worldwide demand for phenolic compounds (PC) because they exhibit several biological activities. This work aimed at extracting phenolic compounds from peanut meal. The methods of extraction were mainly: conventional solvent extraction (traditional methods) and ultrasound assisted extraction (recent methods) and comparing their results. Peanut meal (PM) was prepared by defatting with n-hexane, and then extracted by the two previous methods. First, the conventional solvents used were 80% methanol, ethanol, acetone, isopropanol, and distilled water. Then studied Different parameters such as meal: water ratio, also the effect of temperature and the pH on the extraction process. Second, ultrasonic assisted extractions (USAE), the parameters investigated were temperature, time and speed of sonication. Finally, all the extracts were analyzed by HPLC for their phenolic contents. Results indicated that the highest extracted PC achieved by solvents was in distilled water where 1:100, Meal: Water ratio which extracted 40 mg PC / g PM at 30& 35°C. Highest extracted PC was achieved by alkaline medium at pH 12 more than acidic and neutral medium. While (USAE) at speed 8 ultrasonication and temperature 30ᵒC, extracted 49.2mg PC /g PM. Sothe ultrasound assisted extraction exhibited great influence on the extraction of phenolic compounds from peanut meal. The ultrasonic peanut extract was examined for its antioxidant, antimicrobial and anticarcinogenic activities. The antioxidant activity of PM phenolic extract prepared by ultrasonic technique, was measured by, β-carotene, and DPPH methods, and reducing antioxidant power. Results revealed values: 84.57, 57.72 and 5960 respectively. The PM extract showed different levels of antimicrobial activity against the pathogenic bacteria used. As for the anticarcinogenic effect PM phenolic extract most effective on inhibiting colon carcinoma and lung carcinoma cell lines with IC50 = 20.7 and 20.8 µ/ml., respectively. This was followed by intestinal carcinoma and liver carcinoma cell lines with IC50= 39.6 and 40.2µ/ml.

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