scholarly journals OPTIMIZATION OF ULTRASOUND ASSISTED EXTRACTION OF POLYPHENOLS IN COCOA BEANS

Revista Vitae ◽  
2020 ◽  
Vol 27 (1) ◽  
Author(s):  
Jonny Ariel Fajardo Daza ◽  
Frank Carlos Herrera Ruales ◽  
Carol Andrea Ibarra Cabrera
Keyword(s):  
Antioxidant Properties ◽  
Extraction Process ◽  
Design Stage ◽  
Cocoa Bean ◽  
Solvent Ratio ◽  
Cocoa Beans ◽  
Ultrasound Assisted Extraction ◽  
Optimal Point ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Background: The determination of polyphenols in cocoa beans allows the establishing of antioxidant properties of great benefit to this product. Objectives: Optimization of the ultrasound-assisted extraction method to determine the content of polyphenols in cocoa beans. Methods: Two experiments design stages were carried out to optimize the ultrasound-assisted extraction process of polyphenols from the cocoa bean. In the first experiment design stage, the adequate extraction solvent was determined; for this purpose, five types of solvents were evaluated through a completely random design unrestricted (CRD). In the second experiment stage, a central composite design 22 + star point (with two central points) was used, which was evaluated using the response surface methodology to determine the influence of the temperature, time, and solute / solvent ratio. Results: The experiment found that acetone: water: acetic acid (70: 29.5: 0.5) mixture, leads to a greater amount of total extracted phenols measured for the Folin-Ciocalteu method. Analysis of variance (ANOVA) found that six significant effects that influence the response variable (total phenols extracted). The main effects were of the three factors and three of their interactions. Conclusions: After the optimizing said factors, an optimal point was found: 39.3 °C oftemperature, 74.5 minutes, and 22.8 mL of solvent per gram of cocoa sample.

scholarly journals Ultrasound-assisted extraction of protein from Bombay locusts and its impact on functional and antioxidative properties

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Passakorn Kingwascharapong ◽  
Manat Chaijan ◽  
Supatra Karnjanapratum
Keyword(s):  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Surface Hydrophobicity ◽  
Molecular Characteristics ◽  
Ultrasound Assisted Extraction ◽  
Antioxidative Properties ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Nonessential Amino Acids ◽  
The Impact

AbstractImpact of ultrasound-assisted process (UAP) on yield, functional properties, antioxidant properties and molecular characteristics of protein extracted from Bombay locusts (BL) (Patanga succinta L.) was studied. Different conditions of UAP were implemented for different amplitudes (40–60%) and times (10–30 min) during aqueous extraction. Notably, UAP could enhance yield and protein recovery, compared with those from typical process (TP) (continuously stirred at 100 rpm at room temperature for 1 h). UAP conditions used governed the change of surface hydrophobicity and free α-amino content of BL. UAP could improve solubility of BL, especially at pH levels higher than 2. UAP had no significant (p > 0.05) detrimental effects on foaming capacity and stability of BL. Nevertheless, UAP, particularly at 50–60% amplitudes, affected the emulsion activity and stability of BL. UAP provided BL with high radical scavenging activities and good electron donating ability, especially that from 60% amplitude for 20 min (UAP-60/20). UAP-60/20 showed the impact on change of isoelectric point and molecular characteristic monitored by Fourier transform infrared (FTIR) of BL, compared to those from TP. In addition, BL was also an excellent source of both essential and nonessential amino acids. Therefore, UAP potentially enhanced BL extraction efficiency, resulting the BL with good functional and antioxidative properties.

Research on Detecting Tris-(2,3-dibromopropyl)-Phosphate in Textiles with the HPLC/DAD Method

2012 ◽  
Vol 441 ◽  
pp. 640-644
Author(s):  
Ke Jie Fu ◽  
Li Sheng Yang ◽  
Chang Sheng Feng ◽  
Liang Chen
Keyword(s):  
Limit Of Detection ◽  
Extraction Process ◽  
Ultrasound Assisted Extraction ◽  
Routine Testing ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Pre Treatment ◽  
Finishing Agent ◽  
Detecting Method ◽  
Precision Test

A detecting method for toxic flame retardant finishing agent tris-(2,3-dibromopropyl) -phosphate (TRIS for short) in textiles was studied. In the method, an acetonitrile ultrasound-assisted extraction process was included in sample pre-treatment, and HPLC/DAD was used in the separation and identification of extractives. After that, the conditions of pre-treatment and chromatograph were optimized. The results showed that the limit of detection (LOD) by this method (S/N10) is 1.0 mg/kg, its recovery ranged from 78.1% to 98.4%, and RSD of the precision test is 3.2%, of which all met the requirements for routine testing.

Statistically Designed Extraction of Herbs Using Ultrasound Waves: A Review

2021 ◽  
Vol 27 ◽  
Author(s):  
Ashwani Arya ◽  
Rubal Chahal ◽  
Arun Nanda ◽  
Deepak Kaushik ◽  
May Bin- Jumah ◽  
...  
Keyword(s):  
Published Data ◽  
Optimization Approach ◽  
Solvent Ratio ◽  
Sound Waves ◽  
Ultrasound Assisted Extraction ◽  
Ultrasound Waves ◽  
Yield And Quality ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Statistical Designs

Background: Extraction is the foremost step to isolate the natural constituents from a medicinal plant and leads the process of development of herbal formulation from bench to bed. Introduction: In the field of extraction, the optimization approach helps in achieving better yield and quality where a response of concern is determined or influenced by various variables. This review aimed at congregating the application of different statistical designs (CCD/BBD) to optimize the Ultrasound assisted extraction (UAE) parameters for the recovery of various plant actives belonging to different categories. Methodology: The literature published during last decade in the various reputed databases (Web of Science, Pubmed, Scopus) was reviewed and compiled to reveal the role of response surface methodology in optimizing the influential parameters involved in the ultrasound assisted extraction of herbs. Conclusion: From the present investigations, it can be concluded that the different variables such as sonication power, temperature, time, solute to solvent ratio are generally optimized in UAE of herbs. Moreover, it has also been evidenced from the review of published data that the flavonoids/phenolic acids (>50%) leads the race for the extraction of plants using sound waves. It can be said that the statistically designed UAE has vast prospective in bringing about a green mutiny in herbal drug industry and the modeling of various parameters shall be able to absolutely build up a complete drug innovation course (bench to bed).

scholarly journals Extraction of Anthocyanins and Total Phenolic Compounds from Açai (Euterpe oleracea Mart.) Using an Experimental Design Methodology. Part 2: Ultrasound-Assisted Extraction

Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 326 ◽  
Author(s):  
María José Aliaño-González ◽  
Estrella Espada-Bellido ◽  
Marta Ferreiro-González ◽  
Ceferino Carrera ◽  
Miguel Palma ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Total Phenolic ◽  
Solvent Ratio ◽  
Total Phenolic Compounds ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Relative Standard ◽  
Ultrasound Assisted ◽  
Optimized Conditions

Two optimized methods for ultrasound-assisted extraction were evaluated for the extraction of two types of acai bioactive compounds: Total anthocyanins (TAs) and total phenolic compounds (TPCs). For the extraction optimization, a Box Behnken factorial design of different variables in the following intervals was used: Methanol-water (25%–75%) for solvent composition, temperatures between 10 and 70 °C, amplitude in the range between 30% and 70% of the maximum amplitude −200 W), extraction solvent pH (2–7), the ratio for sample-solvent (0.5 g:10 mL–0.5 g:20 mL), and cycle between 0.2 and 0.7 s. The extraction kinetics were studied using different periods between 5 and 30 min. TA and TPC were analyzed by UHPLC and the Folin–Ciocalteu method, respectively. Optimized conditions for TA were: 51% MeOH in water, 31 °C temperature, pH 6.38, cycle 0.7 s, 65% amplitude, and 0.5 g:10 mL of sample-solvent ratio. Optimized conditions for the TPC were: 49% MeOH in water, 41 °C temperature, pH 6.98, cycle 0.2 s, 30% amplitude, and 0.5 g:10 mL of sample-solvent ratio. Both methods presented a relative standard deviation below 5% in the precision study. The suitability of the methods was tested in real samples. It was confirmed that these methods are feasible for the extraction of the studied bioactive compounds from different açai matrices.

scholarly journals Antioxidant Capacity and Antigenotoxic Effect of Hibiscus sabdariffa L. Extracts Obtained with Ultrasound-Assisted Extraction Process

2020 ◽  
Vol 10 (2) ◽  
pp. 560
Author(s):  
Gregorio Iván Peredo Pozos ◽  
Mario Alberto Ruiz-López ◽  
Juan Francisco Zamora Nátera ◽  
Carlos Álvarez Moya ◽  
Lucia Barrientos Ramírez ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Human Lymphocytes ◽  
Dry Weight ◽  
Extraction Process ◽  
Hibiscus Sabdariffa ◽  
Ultrasound Assisted Extraction ◽  
Solid Ratio ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Antigenotoxic Effect

Hibiscus sabdariffa (Roselle) is in high demand worldwide due to its beneficial health properties owing to the polyphenols content, mainly in the flower calyx. The objective of this study was to find the best conditions (time and liquid: solid ratio) to extract polyphenols from Roselle using Ultrasound-Assisted Extraction (UAE) (40 kHz, 180 W), with ethanol how solvent; as well as determine the yield of phenols, anthocyanin, flavonoids, tannins, antioxidant activity (DPPH) and antigenotoxic effect (comet assay). A traditional solid-liquid extraction was applied as a reference. Extraction times of 40 and 60 min resulted in the highest polyphenols (13.019 mg GAE/g dry weight (dw)), flavonoids (4.981 CE/g dw), anthocyanins (1.855 mg Cya3GE/g dw), and tannins (0.745 CE/g dw) recoveries and an antioxidant activity (DPPH) of 74.58%. Extracts from white calyces contained similar amounts of phenols and flavonoids, but very little condensed tannins (0.049 CE/g dw) and practically no anthocyanins. Extracts from red and white calyces, showed antigenotoxic activity and repaired capacity of damage caused by mutagens in human lymphocytes.

scholarly journals In vitro and in vivo antioxidant properties of bioactive compounds from green propolis obtained by ultrasound-assisted extraction

2019 ◽  
Vol 4 ◽  
pp. 100054 ◽  
Author(s):  
Renata Iara Cavalaro ◽  
Richtier Gonçalves da Cruz ◽  
Sebastien Dupont ◽  
Juliana Maria Leite Nóbrega de Moura Bell ◽  
Thais Maria Ferreira de Souza Vieira
Keyword(s):  
Bioactive Compounds ◽  
Antioxidant Properties ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted

scholarly journals Bioactive Compounds in Bael Fruit Pulp Waste: Ultrasound-Assisted Extraction, Characterization, Modeling, and Optimization Approaches

2020 ◽  
Vol 11 (2) ◽  
pp. 9318-9334
Keyword(s):  
Bioactive Compounds ◽  
Food Additives ◽  
Extraction Process ◽  
Coefficient Of Determination ◽  
Fruit Pulp ◽  
Ultrasound Assisted Extraction ◽  
Modeling And Optimization ◽  
Assisted Extraction ◽  
Pharmaceutical Industries ◽  
Ultrasound Assisted

Bael fruit is an abundant source of bioactive compounds that have importance in the food and pharmaceutical industries. The process of extraction of the bael fruit juice produced a higher percentage of bael fruit pulp waste (BFPW) (37.33 %), which was recycled for the extraction of bioactive compounds. Thus the bioactive compounds like polyphenols, flavonoids, and carotenoids were extracted from BFPW by using the ultrasound-assisted extraction (UAE) technique. The modeling and optimization of the extraction process were carried out by using the experimental design of response surface methodology (RSM). The ethanol concentration of 51.22 %, ultrasound amplitude of 51.45 %, and ultrasound treatment time of 6.11 minutes were obtained to be an RSM optimized values of extraction process variables. The lower values of root mean squared error (RMSE) and mean absolute error (MAE) and higher values of coefficient of determination (R2) indicated admissibility and acceptability of RSM. This extraction process of bioactive compounds has the potential to implement it on an industrial scale for the formulation of food additives and medicines.

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