scholarly journals Rapid Ultrasound-Assisted Starch Extraction from Sago Pith Waste (SPW) for the Fabrication of Sustainable Bioplastic Film

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4398
Author(s):  
Shiou Xuan Tan ◽  
Andri Andriyana ◽  
Steven Lim ◽  
Hwai Chyuan Ong ◽  
Yean Ling Pang ◽  
...  
Keyword(s):  
Particle Size ◽  
Value Added ◽  
Extraction Yield ◽  
Solid Loading ◽  
Sago Starch ◽  
Starch Granules ◽  
Ultrasound Assisted Extraction ◽  
Vapour Permeability ◽  
Ultrasound Assisted ◽  
Bioplastic Film

The present study was conducted to optimize the extraction yield of starch from sago (Metroxylon sagu) pith waste (SPW) with the assistance of ultrasound ensued by the transformation of extracted starch into a higher value-added bioplastic film. Sago starch with extraction yield of 71.4% was successfully obtained using the ultrasound-assisted extraction, with the following conditions: particle size <250 µm, solid loading of 10 wt.%, ultrasonic amplitude 70% and duty cycle of 83% in 5 min. The rapid ultrasound approach was proven to be more effective than the conventional extraction with 60.9% extraction yield in 30 min. Ultrasound-extracted starch was found to exhibit higher starch purity than the control starch as indicated by the presence of lower protein and ash contents. The starch granules were found to have irregular and disrupted surfaces after ultrasonication. The disrupted starch granules reduced the particle size and increased the swelling power of starch which was beneficial in producing a film-forming solution. The ultrasound-extracted sago starch was subsequently used to prepare a bioplastic film via solution casting method. A brownish bioplastic film with tensile strength of 0.9 ± 0.1 MPa, Young’s modulus of 22 ± 0.8 MPa, elongation at break of 13.6 ± 2.0% and water vapour permeability (WVP) of 1.11 ± 0.1 × 10−8 g m−1 s−1 Pa−1 was obtained, suggesting its feasibility as bioplastic material. These findings provide a means of utilization for SPW which is in line with the contemporary trend towards greener and sustainable products and processes.

Progress in ultrasound-assisted extraction of the value-added products from microorganisms

2021 ◽  
Vol 37 (4) ◽  
Author(s):  
Sijia Zheng ◽  
Guangming Zhang ◽  
HongJie Wang ◽  
Zeqing Long ◽  
Ting Wei ◽  
...  
Keyword(s):  
Value Added ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Value Added Products

scholarly journals Mathematical Modelling of Ultrasound-Assisted Extraction Kinetics of Bioactive Compounds from Artichoke By-Products

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 931
Author(s):  
Cristina Reche ◽  
Carmen Rosselló ◽  
Mónica M. Umaña ◽  
Valeria Eim ◽  
Susana Simal
Keyword(s):  
Power Density ◽  
Bioactive Compounds ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Model Parameters ◽  
Ultrasound Assisted Extraction ◽  
Yield Curves ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Ultrasound Power

Valorization of an artichoke by-product, rich in bioactive compounds, by ultrasound-assisted extraction, is proposed. The extraction yield curves of total phenolic content (TPC) and chlorogenic acid content (CAC) in 20% ethanol (v/v) with agitation (100 rpm) and ultrasound (200 and 335 W/L) were determined at 25, 40, and 60 °C. A mathematical model considering simultaneous diffusion and convection is proposed to simulate the extraction curves and to quantify both temperature and ultrasound power density effects in terms of the model parameters variation. The effective diffusion coefficient exhibited temperature dependence (72% increase for TPC from 25 °C to 60 °C), whereas the external mass transfer coefficient and the equilibrium extraction yield depended on both temperature (72% and 90% increases for TPC from 25 to 60 °C) and ultrasound power density (26 and 51% increases for TPC from 0 (agitation) to 335 W/L). The model allowed the accurate curves simulation, the average mean relative error being 5.3 ± 2.6%. Thus, the need of considering two resistances in series to satisfactorily simulate the extraction yield curves could be related to the diffusion of the bioactive compound from inside the vegetable cells toward the intercellular volume and from there, to the liquid phase.

scholarly journals Modelling and Optimization of Ultrasound Assisted Extraction of Polyphenols Using Response Surface Methodology

2020 ◽  
Vol 5 (9) ◽  
pp. 1004-1012
Author(s):  
Junior Franck Ekorong Akouan Anta ◽  
Biloa Dorothée Marcelle ◽  
Bruno Fabrice Siewe ◽  
Raghavarao K. S. M. S.
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Reducing Power ◽  
Extraction Yield ◽  
Operating Conditions ◽  
Extraction Time ◽  
Ultrasound Assisted Extraction ◽  
Stirring Rate ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Mango seed kernels are by-products of the consumption and transformation of mango fruits (Mangifera indica L.). Many ways of valorisation have been proposed, and among them, their phenolic compounds extraction. To increase the extraction yield, ultrasound-assisted extraction was modelled and optimized. The 4 factors Central Composite design associated with the Response Surface Methodology (RSM) were used to achieve that goal. The effect of extraction time, temperature, stirring rate and the Ultrasound Amplitude, on the total phenolic compound extraction yield and the total reducing power of the extract, were studied and modelled. The modelling allows us to do a multi-response optimization to identify the best-operating conditions to achieve at the same time the highest extraction yield and antioxidant capacity. The optimal operating conditions achieved were 41.82 min of extraction time, 54.75⁰C as extraction time, under 266.67 rpm as stirring rate, and 100% ultrasound amplitude. With an expected extraction yield of 71.35 mg GA/g, and 123.058 mg AA/g of total reducing power. 2 extraction cycles, under these conditions, are enough to extract a maximum of the phenolic content, under the described conditions.

scholarly journals Ziziphus lotus (L.) Lam. plant treatment by ultrasounds and microwaves to improve antioxidants yield and quality: An overview

2021 ◽  
Vol 5 (12) ◽  
pp. 53-68
Author(s):  
Farida Berkani ◽  
Maria Luísa Serralheiro ◽  
Farid Dahmoune ◽  
Malik Mahdjoub ◽  
Nabil Kadri ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Extraction Yield ◽  
Point Of View ◽  
Microwave Assisted Extraction ◽  
Ultrasound Assisted Extraction ◽  
Microwave Assisted ◽  
Yield And Quality ◽  
Assisted Extraction ◽  
Industrialization Process ◽  
Ultrasound Assisted

The purpose of this review is to compile the literature published about different aspects of microwave-assisted extraction (MAE) use and ultrasound-assisted extraction (UAE) applied on jujube worldwide and to compare the results on the antioxidant activity obtained for each extraction method. As a result of the increased consumers demand for natural products, as well as for those of agro-food, nutraceutical, cosmetic industries, and green extraction techniques are nowadays trending to be potential alternatives that can improve antioxidant yield and its quality from an economical and environmental point of view by reducing time, energy, and solvent consumption. Ultrasounds and microwaves are widely used methods in the extraction of active principles due to their cavitation and dipolar rotation effect, respectively. These two techniques provide efficiency of extraction while minimizing the time and preserving the quality of the food matrix, overcoming the disadvantages of conventional techniques characterized by their consumption of large quantities of solvents and providing a sparse quantity of extraction. Jujube, a shrub with a high antioxidant potential, which can be affected by various extraction conditions can be the target of UAE and MAE to increase the antioxidant extraction yield. Exploiting the beneficial properties such as the antioxidant activity can lead to an industrialization process, replacing therefor synthetic antioxidants with natural compounds. These can also help in the development of new nutraceuticals and can be used, for instance, in agro-food industries as preservatives. Keywords : Microwave-assisted extraction (MAE), ultrasound-assisted extraction (UAE), antioxidants, Ziziphus lotus (L.) Lam plant.

scholarly journals Optimization of Ultrasound-Assisted Extraction of Phenolic Antioxidants from Lotus corniculatus

2019 ◽  
Vol 92 (3) ◽  
pp. 369-377
Author(s):  
Barbara Fumić ◽  
Mario Jug ◽  
Marijana Zovko Končić
Keyword(s):  
Phenolic Compounds ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Lotus Corniculatus ◽  
Extraction Yield ◽  
Phenolic Antioxidants ◽  
Ultrasound Assisted Extraction ◽  
Box Behnken Design ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Ultrasound-assisted extraction of phenolic antioxidants from Lotus corniculatus was optimized using response surface methodology. The extraction was performed according to the Box–Behnken design with ethanol concentration, temperature, and pH, as independent variables. The responses were extraction yield, DPPH radical scavenging activity (RSA) IC50 and content of different phenolic compounds (total phenols, flavonoids and phenolic acids, as well as quercetin, kaempferol and genistein derivatives). The models were used to calculate best conditions for maximal extraction of phenolic compounds and antiradical activity. Use of the optimized extraction parameters increased the content of quercetin and kaempferol derivatives more than tenfold (from 6.07 to 65.10 mg mL–1 and 6.69 to 92.75 mg mL–1, respectively). The results of this work stress the importance of careful selection of conditions for flavonoids extraction. Abundance of bioactive phenolics in L. corniculatus extracts obtained under optimized extraction conditions opens the possibility for wider utilization of this plant.

Ultrasound-Assisted Extraction of Polysaccharides from Pleurotus eryngii (DC. ex Fr.) Quel

2012 ◽  
Vol 610-613 ◽  
pp. 3410-3415
Author(s):  
Yu Qin Tang ◽  
Yi Tao Zhao
Keyword(s):  
Orthogonal Experiment ◽  
Extraction Yield ◽  
Pleurotus Eryngii ◽  
Extraction Time ◽  
Ultrasonic Power ◽  
Extraction Temperature ◽  
Ultrasound Assisted Extraction ◽  
Power Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted

The purpose of this study was to select the optimum ultrasound-assisted extraction (UAE) conditions for the extraction of polysaccharides from Pleurotus eryngii (DC. ex Fr.) Que (P. eryngii ). The main factors that affect the extraction yield of polysaccharides such as solid:liquid ratio, ultrasonic power, extraction time and extraction temperature were studied individually. An orthogonal experiment was designed to optimize the extraction parameters. It was found that UAE method was a reliable, simple and effective method for fast extraction of polysaccharides from P. eryngii. The optimum UAE conditions were as followings: Solid:liquid ratio of 1:35, Ultrasonic power of 55 W, Extraction time of 30 min and extraction temperature of 45°C.

Ultrasound Assisted Extraction for Preparation Dietary Fiber from Cassava Pulp

2014 ◽  
Vol 931-932 ◽  
pp. 1502-1506 ◽  
Author(s):  
Pornariya Chirinang ◽  
Ratchadaporn Oonsivilai ◽  
Thanawit Kulrattanarak
Keyword(s):  
Optimal Condition ◽  
Dietary Fiber ◽  
Heating Temperature ◽  
Value Added ◽  
Enzymatic Digestion ◽  
Neutral Detergent Fiber ◽  
Ultrasound Assisted Extraction ◽  
Cassava Pulp ◽  
Percentage Yield ◽  
Ultrasound Assisted

Dietary fiber is one of value added products from cassava pulp, byproduct of cassava starch industry. It could be produced by enzymatic digestion in which the optimal condition was studied. The three independent variables are heating temperature (°C) after adding α-amylase concentration (%v/v) and amyloglucosidase concentration (%v/v) regarding of two responses solid percentage yield and neutral detergent fiber (NDF) in the digested sample. The experimental design was based on central composite design. The highest solid percentage yield and NDF of cassava byproduct could get from enzymatic digestion condition at heating temperature at 90 °C, α-amylase concentration of 0.3 % (v/v), and amyloglucosidase concentration of 0.5 % (v/v). For ultrasound-assisted preparation was investigated at the optimum condition of enzymatic digestion. Ultrasound condition was control power of 140% and a frequency of 40 kHz for 15 min. The ultrasound was applied at pre-treatment condition (before adding α-amylase, PU) collocated with intermediate condition (before adding amyloglucosidase, IU) higher NDF yield than optimal condition at 18.78%. In addition, this ultrasound assisted technique give the highest solid percentage.

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