Application of supercritical and subcritical fluids in food processing

Chen, Lin; Cör, Darija; Verboten, Mojca Tancer; Knez, Željko

doi:10.1093/fqsafe/fyy008

Cited by 50 publications

(22 citation statements)

References 103 publications

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“…[32,33] The methanol was used as solvent modifier in the SFE process which may increase the solvation power of SC-CO 2 and the recovery of bioactive compounds. [34] Supercritical carbon dioxide is intrinsically non-polar and addition of cosolvent in SFE makes it effective in the extraction of polar compounds embedded in the cell wall of plant samples. [35] An optimum temperature of 50°C was chosen for all extracts, as a very high temperature may lead to degradation of thermo-labile compounds.…”

Section: Discussionmentioning

confidence: 99%

Untitled

Yadav¹

2020

IJGP

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Introduction: In this study, extracts of Acacia nilotica, Elettaria cardamomum, Psidium guajava, and Glycyrrhiza glabra were prepared using supercritical fluid extraction (SFE) at different pressures and 50°C constant temperature. The antimicrobial activities of extracts were evaluated against oral pathogens, namely, Enterococcus faecalis, Streptococcus mutans, Staphylococcus aureus, and Candida albicans. Materials and Methods: The antimicrobial activities of extracts were evaluated against oral pathogens using agar well diffusion method. Phytochemical analysis of A. nilotica twig was done using gas chromatography-mass spectrometry (GCMS). Statistical analyses of data were performed by one-way ANOVA using MS-Excel and principal component analysis was performed using statistical software XLSTAT 2018. Results: All plants extracts exhibited significant activity at P < 0.05 with inhibitory zones ranging from 8 to 42 mm and minimum inhibitory concentration (MIC) values from 0.19 to 3.12 mg/ml. A. nilotica twig extract obtained at 400 bar pressure showed the highest zone of inhibition (42.07 mm) and lowest MIC (190 µg/mL). E. cardamomum and G. glabra extracts showed moderate activity while P. guajava extracts showed least activity against the oral pathogens. GC-MS analysis of A. nilotica twig confirm the presence of functional moieties of stigmasterol, clionasterol, betulinaldehyde, eugenol, α-terpinyl acetate, and 22,23-dihydrobrassicasterol in the extract which could be responsible for its antimicrobial efficacy and may prove beneficial in oral care products. Conclusion: The extraction of antimicrobial agents from plant materials using SFE at low temperatures avoids the thermal degradation and use of toxic solvents. A. nilotica twig at 50°C and 400 bar showed the significant antimicrobial potential, hence it can be processed to obtain effective and cheaper drug due to higher biomass availability. Chemical profiling of SFE extract by GC-MS analysis proved helpful in the identification of compounds. Furthermore, bioactive compounds should be explicated for their exact mechanism of action with the target pathogens.

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Section: Discussionmentioning

confidence: 99%

Untitled

Yadav¹

2020

IJGP

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“…For the carotenoid’s extraction from carrots, EAE improves the extraction yields by disrupting the cell walls of the carrot’s tissues. The SC-CO 2 method requires important technological investments, while EAE is a more convenient solution for the application in developing countries [121,130]. As presented above, both techniques offer important advantages over organic solvent and mechanically supported extractions and should be considered for the application instead of other methods for carotenoids extraction from Daucus carota L.…”

Section: Discussionmentioning

confidence: 99%

Green Chemistry Extractions of Carotenoids from Daucus carota L.—Supercritical Carbon Dioxide and Enzyme-Assisted Methods

et al. 2019

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Multiple reviews have been published on various aspects of carotenoid extraction. Nevertheless, none of them focused on the discussion of recent green chemistry extraction protocols, especially for the carotenoids extraction from Daucus carota L. This group of bioactive compounds has been chosen for this review since most of the scientific papers proved their antioxidant properties relevant for inflammation, stress-related disorders, cancer, or neurological and neurodegenerative diseases, such as stroke and Alzheimer’s Disease. Besides, carrots constitute one of the most popular sources of carotenoids. In the presented review emphasis has been placed on the supercritical carbon dioxide and enzyme-assisted extraction techniques for the relevant tetraterpenoids. The detailed descriptions of these methods, as well as practical examples, are provided. In addition, the pros and cons of each method and comparison with the standard solvent extraction have been discussed.

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“…The non‐volatile compounds are concentrated at the feed side of the membrane while volatile compounds are concentrated at the permeate side . This is achieved at a temperature below the critical temperatures of the material being separated to avoid the formation of supercritical fluids in cases where the liquid and vapour state of the compounds are indistinguishable from each other . The production of ammonia is mostly performed in a solvary process.…”

Section: Applications Of MD Processesmentioning

confidence: 99%

“…134,135 This is achieved at a temperature below the critical temperatures of the material being separated to avoid the formation of supercritical fluids in cases where the liquid and vapour state of the compounds are indistinguishable from each other. 136 The production of ammonia is mostly performed in a solvary process. However, in a recent study, 137 1 M of free ammonia was recovered from a feed concentration of 0.2 M in a vacuum membrane distillation process.…”

Section: Applications Of MD Processesmentioning

confidence: 99%

A review of nanoparticle‐enhanced membrane distillation membranes: membrane synthesis and applications in water treatment

Nthunya

Gutierrez

Derese

et al. 2019

J of Chemical Tech & Biotech

121

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Membrane distillation (MD) is a thermally driven process that uses low‐grade energy to operate and has been extensively explored as an alternative cost‐effective and efficient water treatment process compared to conventional membrane processes. MD membranes are synthesized from hydrophobic polymers, e.g. polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE) or polypropylene (PP), using various methods including phase inversion and electrospinning techniques. Recent literature on MD membranes clearly shows their important role in surface water/wastewater treatment and seawater desalination. Modification of MD membranes with nanoscale materials significantly improves their performance, preventing wetting and fouling. This review presents a critical assessment of the progress on the use of nanomaterials for the modification of MD membranes. The techniques commonly used to synthesize MD membranes, the modifications that have been adopted for the incorporation of nanomaterials onto membranes, and the unique properties these nanomaterials impart on the membranes are discussed. The use of modified membranes in different MD configurations and their application in groundwater, surface water, wastewater, brackish water and seawater treatment is reviewed. Finally, cost implications, commercial viability, environmental sustainability, and future prospects of MD are also discussed to elucidate promising approaches for a future and successful implementation of MD at an industrial scale. © 2019 Society of Chemical Industry

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Application of supercritical and subcritical fluids in food processing

Cited by 50 publications

References 103 publications

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Green Chemistry Extractions of Carotenoids from Daucus carota L.—Supercritical Carbon Dioxide and Enzyme-Assisted Methods

A review of nanoparticle‐enhanced membrane distillation membranes: membrane synthesis and applications in water treatment

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