Supercritical CO2 as a green solvent for the circular economy: Extraction of fatty acids from fruit pomace

Campalani, Carlotta; Amadio, Emanuele; Zanini, Simone; Dall’Acqua, Stefano; Panozzo, Marina; Ferrari, Sara; Nadai, Gabriele De; Francescato, Stefano; Selva, Maurizio; Perosa, Alvise

doi:10.1016/j.jcou.2020.101259

Cited by 41 publications

(14 citation statements)

References 23 publications

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“…This mindset has been supported by the enforcement of environmental regulations, such as the Pollution Prevention Act of 1990 that is enforced by the US Environmental Protection Agency (EPA), the Rio Declaration on Environment and Development that was adopted by the United Nations (UN) Conference on Environment and Development only two years later [ 32 ], and the adoption of the UN objectives of the 2030 Agenda for Sustainable Development [ 33 ]. The role of academia in the implementation of more sustainable practices is evident in the upsurge of diverse literature reports dealing with the maximization of resources [ 34 , 35 ], the use of environmentally benign solvents [ 36 , 37 , 38 ], and the valorisation of renewable resources for the recovery of high-value low-molecular-weight compounds and macromolecular fractions [ 39 , 40 ] (to give a few examples).…”

Section: Introductionmentioning

confidence: 99%

Natural Polymers-Based Materials: A Contribution to a Greener Future

et al. 2021

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Natural polymers have emerged as promising candidates for the sustainable development of materials in areas ranging from food packaging and biomedicine to energy storage and electronics. In tandem, there is a growing interest in the design of advanced materials devised from naturally abundant and renewable feedstocks, in alignment with the principles of Green Chemistry and the 2030 Agenda for Sustainable Development. This review aims to highlight some examples of the research efforts conducted at the Research Team BioPol4fun, Innovation in BioPolymer-based Functional Materials and Bioactive Compounds, from the Portuguese Associate Laboratory CICECO–Aveiro Institute of Materials at the University of Aveiro, regarding the exploitation of natural polymers (and derivatives thereof) for the development of distinct sustainable biobased materials. In particular, focus will be given to the use of polysaccharides (cellulose, chitosan, pullulan, hyaluronic acid, fucoidan, alginate, and agar) and proteins (lysozyme and gelatin) for the assembly of composites, coatings, films, membranes, patches, nanosystems, and microneedles using environmentally friendly strategies, and to address their main domains of application.

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Section: Introductionmentioning

confidence: 99%

Natural Polymers-Based Materials: A Contribution to a Greener Future

et al. 2021

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“…One of the most used supercritical fluids is certainly carbon dioxide (CO 2 ), as it is inert, inexpensive, easily available, odorless, tasteless, environment-friendly, and GRAS (generally regarded as safe) solvent. In addition, its near-ambient critical temperature (31.1 °C) makes it ideally suitable for thermolabile natural products [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Old Plant, New Possibilities: Wild Bilberry (Vaccinium myrtillus L., Ericaceae) in Topical Skin Preparation

et al. 2021

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Bilberry represents a valuable source of antioxidant substances responsible for its application for the treatment of different conditions (such as inflammation, cardiovascular disease, cancer, diabetes, and different age-related diseases) associated with increased oxidative stress. As oxidative stress might cause skin impairments, we aim to evaluate a topical preparation containing bilberry leaves extract and bilberry seeds oil, obtained as a byproduct of the food industry. To obtain the extracts, the conventional maceration technique for leaves, and supercritical carbon dioxide extraction for seeds were employed. The chemical profile of both actives was achieved by HPLC and GC methods, revealing the presence of phenolic acids (chlorogenic being the most abundant), flavonoids (isoquercetin in the highest amount), and resveratrol in leaves extract, while in seeds oil the essential ω-3 and ω-6 fatty acids were determined in favorable ratio, almost being 1. Antioxidant potential of the wild bilberry extract and seed oil was evaluated using in vitro DPPH and FRAP assays. Finally, effects of the oil-in-water creams with mentioned wild bilberry isolates on the skin were investigated in an in vivo study conducted on healthy human volunteers, revealing the significant beneficial effects when topically applied.

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“…It is considered as a promising solvent because of its supercritical existence. Additionally, the gas is non-corrosive, inexpensive, colorless and odorless making it one of the ideal choices for isolation and purification in food industry (Sánchez-Vicente et al 2009 ; Campalani et al 2020 ).…”

Section: Extraction Methods Of Polyphenolsmentioning

confidence: 99%

Techniques and modeling of polyphenol extraction from food: a review

et al. 2021

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There is a growing demand for vegetal food having health benefits such as improving the immune system. This is due in particular to the presence of polyphenols present in small amounts in many fruits, vegetables and functional foods. Extracting polyphenols is challenging because extraction techniques should not alter food quality. Here, we review technologies for extracting polyphenolic compounds from foods. Conventional techniques include percolation, decoction, heat reflux extraction, Soxhlet extraction and maceration, whereas advanced techniques are ultrasound-assisted extraction, microwave-assisted extraction, supercritical fluid extraction, high-voltage electric discharge, pulse electric field extraction and enzyme-assisted extraction. Advanced techniques are 32-36% more efficient with approximately 15 times less energy consumption and producing higher-quality extracts. Membrane separation and encapsulation appear promising to improve the sustainability of separating polyphenolic compounds. We present kinetic models and their influence on process parameters such as solvent type, solid and solvent ratio, temperature and particle size.

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Supercritical CO2 as a green solvent for the circular economy: Extraction of fatty acids from fruit pomace

Cited by 41 publications

References 23 publications

Natural Polymers-Based Materials: A Contribution to a Greener Future

Natural Polymers-Based Materials: A Contribution to a Greener Future

Old Plant, New Possibilities: Wild Bilberry (Vaccinium myrtillus L., Ericaceae) in Topical Skin Preparation

Techniques and modeling of polyphenol extraction from food: a review

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