scholarly journals Hydroxytyrosol-Fortified Foods Obtained by Supercritical Fluid Extraction of Olive Oil

Antioxidants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1619
Author(s):  
Lucia Bartella ◽  
Fabio Mazzotti ◽  
Ines Rosita Talarico ◽  
Ilaria Santoro ◽  
Leonardo Di Di Donna
Keyword(s):  
Olive Oil ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Fluid Extraction ◽  
Original Process ◽  
Whole Wheat ◽  
Bread Roll ◽  
Set Up

A new original process has been set-up to obtain hydroxytyrosol-enriched food by means of CO2 supercritical fluid extraction. The process is based on the direct adsorption of hydroxytyrosol on selected foodstuff (e.g., flour, whole-wheat flour, and sugar) when placed in contact with olive oil (which is known to contain this phenol) under controlled temperature and pressure conditions of supercritical CO2. The transfer of the nutraceutical to the foodstuff was initially evaluated using a fortified olive oil model and was then applied to commercial olive oil and foodstuff. The yield of the hydroxytyrosol transfer was demonstrated to be quantitative. In order to prove the suitability of the final products, hydroxytyrosol-enriched flour was used to prepare a bread roll, which maintained the nutraceutical characteristics after the cooking. Finally, DPPH based experiments were performed to prove the radical scavenging activity of the functionalized foodstuff.

scholarly journals Supercritical fluid extraction of Bhut Jolokia oleoresin and its quality analysis

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Darshana Deka ◽  
Nishant Rachayya Swami Hulle
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Total Phenolics ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Quality Analysis ◽  
Eastern Region ◽  
Fluid Extraction ◽  
Phenolics Content ◽  
Bhut Jolokia

AbstractThe present study focuses on the standardization of the supercritical fluid extraction of the Bhut Jolokia (Capsicum chinense) which is abundantly grown in the north eastern region of India. The effect of process parameters pressure (75–225 bar), temperature (40–60 °C) and time (30–90 min) of oleoresin extraction process was studied. The standardized condition to obtain maximum extraction of Bhut Jolokia oleoresin was found to be 207 bar, 60 °C and 73 min. The oleoresin extract was analyzed for its antimicrobial, antioxidant and total phenolics content. Four strains of bacteria namely Escherichia coli (ATCC -11,229), Bacillus subtilis (ATCC- 11,774), Salmonella typhimurium (ATCC- 14,028) and Staphylococcus aureus (12,600) were used for the antimicrobial assay. It was observed that the highest inhibition was seen against E. coli, moderate inhibition was seen against S.aureus and S. typhi and partial/no zone of inhibition was observed against B. subtilis. The extract of Bhut Jolokia oleoresin showed radical scavenging activity of 58.6 ± 3.86% and total phenolics content of 4250 ± 2.26 mg GAE/100 g sample indicating Bhut Jolokia oleoresin as a good antioxidant and is also a good source of phenolic compounds.

scholarly journals Supercritical Fluid Extraction of Berry Seeds: Chemical Composition and Antioxidant Activity

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Graziele Gustinelli ◽  
Lovisa Eliasson ◽  
Cecilia Svelander ◽  
Thomas Andlid ◽  
Leif Lundin ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Vitamin E ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Antioxidant Compounds ◽  
Fluid Extraction ◽  
Black Currant

The influence of supercritical fluid extraction (SFE) and solvent extraction of oils from cloudberry, bilberry, and black currant seeds on the yield, chemical properties, and recovery of antioxidant compounds was investigated. SFE was performed for 1 h at 350 bar and at 50°C and 80°C. Fatty acids, vitamin E, carotenoids, and free radical-scavenging activity (DPPH) were assayed. SFE at 80°C resulted in higher oil yields for cloudberry and black currant seeds. The oils were rich in polyunsaturated fatty acids (PUFAs) (66.8%–75.9% w/w), with high percentages of linoleic and α-linolenic acids. The black currant seed extracts had the highest concentrations of vitamin E (range, 113.0–241.8 mg/100 g oil) and carotenoids (range, 11.5–32.3 mg/100 g oil) and the highest antioxidant activity. The cloudberry seed oils also had high antioxidant content and activity. These findings indicate the potential of SFE for the recovery of PUFA and antioxidant compounds in berry by-products.

scholarly journals Optimization of Countercurrent Supercritical Fluid Extraction of Minor Components from Olive Oil

2013 ◽  
Vol 10 (1) ◽  
pp. 78-85 ◽  
Author(s):  
Andrés Benavides ◽  
Pedro Martín-Álvarez ◽  
Luis Vázquez ◽  
Guillermo Reglero ◽  
Francisco Señoráns ◽  
...  
Keyword(s):  
Olive Oil ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Minor Components ◽  
Fluid Extraction

scholarly journals Co-solvent Selection for Supercritical Fluid Extraction of Essential Oil and Bioactive Compounds from Polygonum minus

2013 ◽  
Vol 12 (2) ◽  
pp. 19 ◽  
Author(s):  
Masturah Markom ◽  
Norsyamimi Hassim ◽  
Nurina Anuar ◽  
Syarul Nataqain Baharum
Keyword(s):  
Antioxidant Capacity ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Methanol Extract ◽  
Total Yield ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Fluid Extraction ◽  
Antioxidant Power ◽  
Polygonum Minus

This study evaluated the biological activity (antioxidant assay) of Polygonum minus extracted using Supercritical Fluid Extraction (SFE) added with different types of co-solvents. The seven co-solvents employed were water, methanol, ethanol, 50% methanol, 50% ethanol, 70% methanol and 70% ethanol for selection of the best co-solvent prior to optimization of SFE. 70% methanol produced the highest total yield of extract (33.1%) compared to other co-solvents. The antioxidant capacity was then evaluated using four different assays: the total phenolic content (TP), the total flavonoid content (TF), the ferric reducing/antioxidant power (FRAP) and the free radical-scavenging capacity of 2,2-diphenyl-1-picrylhydrazyl (DPPH). The highest TP and TF were from 70% methanol extract (11.2 ± 0.15 mg GAE/g sample (mg GAE/g) and 11.9 ± 0.03 mg CAE/g sample (mg CEQ/g) respectively). 70% metanol extract also showed the highest FRAP value (346.7 ± 0.66 µmol Fe (II)/g sample) and the highest percentage of DPPH radical inhibition was also shown by 70% methanol extract (88.7 ± 0.40%). There was a positive correlation between the antioxidant capacity (FRAP and DPPH) with those of TP and TF contents. Therefore, the best co-solvent chosen for further optimization of SFE is 70% methanol.

scholarly journals Co-Solvent Selection for Supercritical Fluid Extraction (SFE) of Phenolic Compounds from Labisia pumila

Molecules ◽  
2020 ◽  
Vol 25 (24) ◽  
pp. 5859 ◽  
Author(s):  
Shazana Azfar Radzali ◽  
Masturah Markom ◽  
Noorashikin Md Saleh
Keyword(s):  
Phenolic Compounds ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
High Performance ◽  
Radical Scavenging ◽  
Solvent System ◽  
Total Phenolic ◽  
Fluid Extraction ◽  
Antioxidant Power ◽  
Labisia Pumila

A preliminary study was conducted to study the effects of different types and concentrations of co-solvents based on yield, composition and antioxidants capacity of extract prior to optimization studies of supercritical fluid extraction (SFE) of Labisia pumila (locally referred to as ‘kacip fatimah’). The following co-solvents were studied prior to the optimization of supercritical carbon dioxide (SC–CO2) technique: ethanol, water, methanol, as well as aqueous solutions of ethanol–water and methanol–water (50% and 70% v/v). By using the selected co-solvents, identification of phenolic acids (gallic acid, methyl gallate and caffeic acid) was determined by using High-Performance Liquid Chromatography (HPLC). Then, the antioxidant capacity was evaluated by using three different assays: total phenolic content (TPC), ferric reducing/antioxidant power (FRAP) and free radical-scavenging capacity of 2,2-diphenyl-1-picrylhydrazyl (DPPH). SC–CO2 with 70% ethanol–water co-solvent was superior in terms of a higher combination of phenolic compounds extracted and antioxidants capacity. Overall, SC–CO2 with co-solvent 70% ethanol–water technique was efficient in extracting phenolic compounds from L. pumila, and thus the usage of this solvent system should be considered for further optimization studies.

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