Extraction of natural products using supercritical fluids and pressurized liquids assisted by ultrasound: Current status and trends

Dias, Arthur Luiz Baião; Aguiar, Ana Carolina de; Rostagno, Maurı́cio A.

doi:10.1016/j.ultsonch.2021.105584

Cited by 73 publications

(45 citation statements)

References 95 publications

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“…Extraction of bakuchiol with advanced methods was rarely explored. A study on ultrasonic assisted 23 and supercritical CO 2 extraction 24 of bakuchiol reported highest yield when compared with other conventional methods. Further, many advanced extraction techniques (microwaves, ultrasonic, pressurized liquids, supercritical fluids, and electric fields etc. )…”

Section: Occurrence and Isolationmentioning

confidence: 97%

Bakuchiol – a natural meroterpenoid: structure, isolation, synthesis and functionalization approaches

Krishna¹,

Baldev²,

Athalathil³

2022

RSC Adv.

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Section: Occurrence and Isolationmentioning

confidence: 97%

Bakuchiol – a natural meroterpenoid: structure, isolation, synthesis and functionalization approaches

Krishna¹,

Baldev²,

Athalathil³

2022

RSC Adv.

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“…Supercritical fluids (SCF) are substances for which both pressure and temperature are higher than their critical values assuming physical characteristics intermediate between those of a liquid and those of a gas [ 148 , 149 ]. Therefore, the synergism among density, low viscosity, diffusivity, near-zero surface tension, pressure, and temperature dependence allow supercritical fluids to easily penetrate a microporous matrix to extract intracellular compounds [ 150 ].…”

Section: Green Extraction Process: Synergism Between Solvents and Technologymentioning

confidence: 99%

Emerging Green Techniques for the Extraction of Antioxidants from Agri-Food By-Products as Promising Ingredients for the Food Industry

et al. 2021

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Nowadays, the food industry is heavily involved in searching for green sources of valuable compounds, to be employed as potential food ingredients, to cater to the evolving consumers’ requirements for health-beneficial food ingredients. In this frame, agri-food by-products represent a low-cost source of natural bioactive compounds, including antioxidants. However, to effectively recover these intracellular compounds, it is necessary to reduce the mass transfer resistances represented by the cellular envelope, within which they are localized, to enhance their extractability. To this purpose, emerging extraction technologies, have been proposed, including Supercritical Fluid Extraction, Microwave-Assisted Extraction, Ultrasound-Assisted Extraction, High-Pressure Homogenization, Pulsed Electric Fields, High Voltage Electrical Discharges. These technologies demonstrated to be a sustainable alternative to conventional extraction, showing the potential to increase the extraction yield, decrease the extraction time and solvent consumption. Additionally, in green extraction processes, also the contribution of solvent selection, as well as environmental and economic aspects, represent a key factor. Therefore, this review focused on critically analyzing the main findings on the synergistic effect of low environmental impact technologies and green solvents towards the green extraction of antioxidants from food by-products, by discussing the main associated advantages and drawbacks, and the criteria of selection for process sustainability.

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“…However, this is not a new field of research that remains unexplored as discussed in this review. According to Dias, Aguiar and Rostagno [ 103 ], the scale-up of a high-pressure system assisted by ultrasound is still challenging for the companies that aim to expand their production from lab- to industrial scale.…”

Section: Low-frequency Ultrasound In the Industrial Scalementioning

confidence: 99%

Low-Frequency Ultrasound Coupled with High-Pressure Technologies: Impact of Hybridized Techniques on the Recovery of Phytochemical Compounds

2021

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The coupling of innovative technologies has emerged as a smart alternative for the process intensification of bioactive compound extraction from plant matrices. In this regard, the development of hybridized techniques based on the low-frequency and high-power ultrasound and high-pressure technologies, such as supercritical fluid extraction, pressurized liquids extraction, and gas-expanded liquids extraction, can enhance the recovery yields of phytochemicals due to their different action mechanisms. Therefore, this paper reviewed and discussed the current scenario in this field where ultrasound-related technologies are coupled with high-pressure techniques. The main findings, gaps, challenges, advances in knowledge, innovations, and future perspectives were highlighted.

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Extraction of natural products using supercritical fluids and pressurized liquids assisted by ultrasound: Current status and trends

Cited by 73 publications

References 95 publications

Bakuchiol – a natural meroterpenoid: structure, isolation, synthesis and functionalization approaches

Bakuchiol – a natural meroterpenoid: structure, isolation, synthesis and functionalization approaches

Emerging Green Techniques for the Extraction of Antioxidants from Agri-Food By-Products as Promising Ingredients for the Food Industry

Low-Frequency Ultrasound Coupled with High-Pressure Technologies: Impact of Hybridized Techniques on the Recovery of Phytochemical Compounds

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