Effect of the pre-treatment of the samples on the natural substances extraction from L. using supercritical carbon dioxide

Talanta ◽  
2005 ◽  
Vol 67 (1) ◽  
pp. 175-181 ◽  
Author(s):  
L CASAS ◽  
C MANTELL ◽  
M RODRIGUEZ ◽  
M GORDILLO ◽  
A TORRES ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Natural Substances ◽  
Pre Treatment ◽  
Supercritical Carbon

scholarly journals Influence of pre-treatment on enzymatic degumming of apocynum venetum bast fibers in supercritical carbon dioxide

2015 ◽  
Vol 19 (4) ◽  
pp. 1305-1309 ◽  
Author(s):  
Shi-Hui Gao ◽  
Chong-Wen Yu
Keyword(s):  
Carbon Dioxide ◽  
Optimal Design ◽  
Supercritical Carbon Dioxide ◽  
Degradation Rate ◽  
Bast Fiber ◽  
Bast Fibers ◽  
Enzymatic Degumming ◽  
Apocynum Venetum ◽  
Pre Treatment ◽  
Supercritical Carbon

Pre-treatment of apocynum venetum bast fibers in supercritical carbon dioxide can improve the efficiency of enzymatic degumming of apocynum venetum bast fiber. This paper studies experimentally effect of pressure and degumming time on degradation rate, the results can be used for optimal design of degumming.

Supercritical carbon dioxide enhanced pre-treatment of cotton stalks for methane production

Energy ◽  
2020 ◽  
Vol 194 ◽  
pp. 116903 ◽  
Author(s):  
Rafat Al Afif ◽  
Martin Wendland ◽  
Thomas Amon ◽  
Christoph Pfeifer
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Methane Production ◽  
Cotton Stalks ◽  
Pre Treatment ◽  
Supercritical Carbon

scholarly journals Extraction of Bioactive Compounds Using Supercritical Carbon Dioxide

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 782 ◽  
Author(s):  
Antonio Molino ◽  
Vincenzo Larocca ◽  
Giuseppe Di Sanzo ◽  
Maria Martino ◽  
Patrizia Casella ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Flow Rate ◽  
Treatment Time ◽  
Value Added ◽  
Extraction Cycle ◽  
Pre Treatment ◽  
Co2 Flow ◽  
Β Carotene ◽  
Supercritical Carbon

Microalgae Dunaliella salina contains useful molecules such as β-carotene and fatty acids (FAs), which are considered high value-added compounds. To extract these molecules, supercritical carbon dioxide was used at different operative conditions. The effects of mechanical pre-treatment (grinding speed at 0–600 rpm; pre-treatment time of 2.5–7.5 min) and operating parameters for extraction, such as biomass loading (2.45 and 7.53 g), pressure (100–550 bars), temperature (50–75 °C) and CO2 flow rate (7.24 and 14.48 g/min) by varying the extraction times (30–110 min) were evaluated. Results showed that the maximum cumulative recovery (25.48%) of β-carotene was achieved at 400 bars and 65 °C with a CO2 flow rate of 14.48 g/min, while the highest purity for stage (55.40%) was attained at 550 bars and 65 °C with a CO2 flow rate of 14.48 g/min. The maximum recovery of FAs, equal to 8.47 mg/g, was achieved at 550 bars and 75 °C with a CO2 flow rate of 14.48 g/min. Moreover, the lowest biomass loading (2.45 g) and the first extraction cycle (30 min) allowed the maximum extraction of β-carotene and FAs.

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