A novel approach: Supercritical carbon dioxide + ethanol extraction to improve techno‐functionalities of pea protein isolate

2021 ◽  
Author(s):  
Serap Vatansever ◽  
Jae‐Bom Ohm ◽  
Senay Simsek ◽  
Clifford Hall
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Protein Isolate ◽  
Ethanol Extraction ◽  
Pea Protein ◽  
Novel Approach ◽  
Pea Protein Isolate ◽  
Supercritical Carbon

scholarly journals Fractionation of Whey Protein Isolate with Supercritical Carbon Dioxide—Process Modeling and Cost Estimation

2011 ◽  
Vol 13 (1) ◽  
pp. 240-259 ◽  
Author(s):  
Alexandra L. Yver ◽  
Laetitia M. Bonnaillie ◽  
Winnie Yee ◽  
Andrew McAloon ◽  
Peggy M. Tomasula
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Whey Protein ◽  
Process Modeling ◽  
Cost Estimation ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Supercritical Carbon

Creating Nanoporosity by Selective Extraction of Porogens Using Supercritical Carbon Dioxide/Cosolvent Processes

2003 ◽  
Vol 766 ◽  
Author(s):  
B. Lahlouh ◽  
T. Rajagopalan ◽  
J. A. Lubguban ◽  
N. Biswas ◽  
S. Gangopadhyaya ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Selective Extraction ◽  
Organic Polymer ◽  
K Value ◽  
Degradation Temperature ◽  
Novel Approach ◽  
The Matrix ◽  
Closed Pore ◽  
Supercritical Carbon

AbstractThis work presents a novel approach using supercritical carbon dioxide (SCCO2) to selectively extract poly(propylene glycol) (PPG) porogen from a poly(methylsilsesquioxane) (PMSSQ) matrix, which results in the formation of nanopores. Nanoporous thin films were prepared by spin-casting a solution containing appropriate quantities of PPG porogen and PMSSQ dissolved in PM acetate. The as-spun films were thermally cured at temperatures well below the thermal degradation temperature of the organic polymer to form a cross-linked organic/inorganic polymer hybrid. By selectively removing the CO2 soluble PPG porogen, open and closed pore structures are possible depending upon the porogen load and its distribution in the matrix before extraction. In the present work, two different loadings of PPG namely 25 wt.% and 55 wt.% were used. Both static SCCO2 and pulsed SCCO2/cosolvent treatments were used for PPG extraction. The initial results indicate that the pulsed SCCO2/cosolovent treatment was more efficient. Fourier transform infrared spectroscopy (FTIR) and refractive index measurements further corroborate the successful extraction of the porogens at relatively low temperatures (2000C). For the pure PMSSQ film, the k value is 3.1, whereas it is 1.46 and 2.27 for the open and closed pore compositions respectively after the static SCCO2 extraction and 430°C subsequent annealing. The reduction in the k-value is attributed to the formation of nanopores. The pore structure was verified from transmission electron microscopy (TEM), and from small-angle x-ray scattering (SAXS) measurements, the pore size was determined to be 1-3 nm for these films.

scholarly journals Novel Approach to Dye Polyethylene Terephthalate (PET) Fabric in Supercritical Carbon Dioxide with Natural Curcuminoid Dyes

2019 ◽  
Vol 27 (3(135)) ◽  
pp. 65-70 ◽  
Author(s):  
Shekh Mamun Kabir ◽  
Mahabub Hasan ◽  
Zulhash Uddin
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Polyethylene Terephthalate ◽  
Curcuma Longa ◽  
Natural Dyes ◽  
Process Time ◽  
Pet Fabric ◽  
Novel Approach ◽  
Exhaust Dyeing ◽  
Supercritical Carbon

The use of natural dyes has increased in the last few decades due to the eco-friendly approach of dyeing. There are still some limitations that are associated with natural dyes, such as dyeing efficiency, reproducibility of shades, process complexity, availability etc. The main problem associated with the dyeing property of natural dyes is “low exhaustion”. In this study, natural dyestuff from Curcuma longa L. was extracted and polyethylene terephthalate fabric was dyed with it in the same bath by employing the supercritical carbon dioxide method. The method was developed to improve the dye-ability of natural dyes and reduce the process time and effluent. Curcuminoid dye exhaustion on PET fabric showed almost 80% by using supercritical carbon dioxide dyeing methods, and the highest colour strength (K/S = 12) was obtained. Coloured polyethylene terephthalate fabric treated with supercritical carbon dioxide showed deeper shades (L* = 72.92) and better fastness properties as compared with high temperature exhaust dyeing methods.

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