scholarly journals Modelling and optimization of wet microalgae Scenedesmus quadricauda lipid extraction using microwave pre-treatment method and response surface methodology

2019 ◽  
Vol 132 ◽  
pp. 1323-1331 ◽  
Author(s):  
C. Onumaegbu ◽  
A. Alaswad ◽  
C. Rodriguez ◽  
A. Olabi
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Lipid Extraction ◽  
Treatment Method ◽  
Scenedesmus Quadricauda ◽  
Pre Treatment ◽  
Wet Microalgae ◽  
Modelling And Optimization

Enzyme-assisted Extraction for Optimized Recovery of Phenolic Bioactives from Peganum hermala Leaves Using Response Surface Methodology

2018 ◽  
Vol 17 (4) ◽  
pp. 349-354
Author(s):  
Qadir Rahman ◽  
Anwar Farooq ◽  
Amjad Gilani Mazhar ◽  
Nadeem Yaqoob Muhammad ◽  
Ahmad Mukhtar
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Enzyme Concentration ◽  
Coumaric Acid ◽  
Assisted Extraction ◽  
Pre Treatment ◽  
Optimized Conditions ◽  
Enzyme Complexes ◽  
Hydrolysis Of ◽  
Central Composite

This study investigates the effect of enzyme formulations (Zympex-014, Kemzyme dry-plus and Natuzyme) on recovery of phenolics from Peganum hermala (harmal) leaves, under optimized conditions using response surface methodology. As compared to the other enzyme complexes, the yield (34 g/100g) obtained through Zympex-014-assisted extraction was higher under optimized conditions such as time (75 min), temperature (70°C), pH (6.5) and enzyme concentration (5 g/100 g) using central composite design (CCD). Effectiveness of Zympex-014 towards hydrolysis of P. hermala leaves cell wall was examined by analyzing the control and enzyme-treated leave residues using scanning electron microscope (SEM). GC/MS characterization authenticated the presence of quercetin (1.44), gallic acid (0.23), caffeic acid (0.04), cinnamic acid (0.05), m-coumaric acid (0.23) and p-coumaric acid (0.37 μg/g) as the potent phenolics in Zympex-014 based extract. It can be concluded from the findings of the current work that pre-treatment of P. hermala leaves with Zympex-014 significantly enhanced the recovery of phenolics that supports its potential uses in the nutra-pharamaceutical industry.

Enhanced biodiesel production from wet microalgae biomass optimized via response surface methodology and artificial neural network

2022 ◽  
Vol 184 ◽  
pp. 753-764
Author(s):  
Gul Muhammad ◽  
Ange Douglas Potchamyou Ngatcha ◽  
Yongkun Lv ◽  
Wenlong Xiong ◽  
Yaser A. El-Badry ◽  
...  
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Biodiesel Production ◽  
Microalgae Biomass ◽  
Artificial Neural ◽  
Wet Microalgae

scholarly journals Response surface methodology for the optimization of sludge solubilization by ultrasonic pre-treatment

2018 ◽  
Vol 113 ◽  
pp. 012177
Author(s):  
Mingyue Zheng ◽  
Xiaohui Zhang ◽  
Peng Lu ◽  
Qiguang Cao ◽  
Yuan Yuan ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Pre Treatment

scholarly journals Collagen Extraction Optimization from the Skin of the Small-Spotted Catshark (S. canicula) by Response Surface Methodology

Marine Drugs ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 40 ◽  
Author(s):  
María Blanco ◽  
José Antonio Vázquez ◽  
Ricardo I. Pérez-Martín ◽  
Carmen G. Sotelo
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Extraction Procedure ◽  
Amino Acid Content ◽  
Combined Effect ◽  
Human Consumption ◽  
Concentration Time ◽  
Sds Page ◽  
Skin Collagen ◽  
Pre Treatment

The small-spotted catshark is one of the most abundant elasmobranchs in the Northeastern Atlantic Ocean. Although its landings are devoted for human consumption, in general this species has low commercial value with high discard rates, reaching 100% in some European fisheries. The reduction of post-harvest losses (discards and by-products) by promotion of a full use of fishing captures is one of the main goals of EU fishing policies. As marine collagens are increasingly used as alternatives to mammalian collagens for cosmetics, tissue engineering, etc., fish skins represent an excellent and abundant source for obtaining this biomolecule. The aim of this study was to analyze the influence of chemical treatment concentration, temperature and time on the extractability of skin collagen from this species. Two experimental designs, one for each of the main stages of the process, were performed by means of Response Surface Methodology (RSM). The combined effect of NaOH concentration, time and temperature on the amount of collagen recovered in the first stage of the collagen extraction procedure was studied. Then, skins treated under optimal NaOH conditions were subjected to a second experimental design, to study the combined effect of AcOH concentration, time and temperature on the collagen recovery by means of yield, amino acid content and SDS-PAGE characterization. Values of independent variables maximizing collagen recovery were 4 °C, 2 hours and 0.1 M NaOH (pre-treatment) and 25 °C, 34 hours and 1 M AcOH (collagen extraction).

A Thermomechanical Preprocessing for Pectin Isolation from Orange Peel with Optimisation by Response Surface Methodology

2008 ◽  
Vol 4 (1) ◽  
Author(s):  
Sid-Ahmed Rezzoug ◽  
Zoulikha Maache-Rezzoug ◽  
Frédéric Sannier ◽  
Karim Allaf
Keyword(s):  
Response Surface Methodology ◽  
Moisture Content ◽  
Response Surface ◽  
Processing Time ◽  
Initial Moisture Content ◽  
Control Sample ◽  
Orange Peel ◽  
Response Surfaces ◽  
Acid Extraction ◽  
Pre Treatment

The instantaneous controlled pressure drop process (or D.I.C process: ``Détente Instantanée Contrôlée") was used as a pre-treatment prior to pectin acid extraction from orange peel. This process involves subjecting the orange peel for a short time to steam pressure varying from 100 to 700 kPa, followed by an instantaneous decompression to vacuum at 5 kPa. Effects of processing pressure, moisture content of peels before the thermomechanical treatment and processing time were examined with response surface methodology. The optimal conditions were determined and the response surfaces were plotted from the mathematical models. The Fisher test and p-value indicated that both processing pressure and moisture content of peels before the pre-treatment had a highly significant effect on the pectin yield. The quadratic effect of processing pressure as well as the interaction effects of the initial moisture content and processing time also had a significant effect on the response. Moreover, the kinetics of pectin extraction showed that after few minutes of hydrolysis, the yields of pectin were systematically higher than that of the control sample and this is important from industrial point of view because the hydrolysis of pectin is generally performed in 10-15 minutes.

Sign in / Sign up

Export Citation Format

Share Document