Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2024 Aug 15;104(10):5689-5697.
doi: 10.1002/jsfa.13395. Epub 2024 Mar 21.

Semi-industrial ultrasound-assisted extraction of grape-seed proteins

Salah Chaji  1 , Giorgio Capaldi  1 , Lorenzo Gallina  1 , Giorgio Grillo  1 , Luisa Boffa  1 , Giancarlo Cravotto  1
Affiliations

Semi-industrial ultrasound-assisted extraction of grape-seed proteins

Salah Chaji et al. J Sci Food Agric. .

Abstract

Background: To manage industrial waste in accordance with the circular bioeconomy concept it is sometimes necessary to handle grape seeds, an abundant by-product of the wine-making process. This study presents a process based on ultrasound technology for the extraction of grape-seed proteins, due to their nutritional and techno-functional properties. The protein content of extracts obtained under silent and lab-scale conditions was compared with that obtained under semi-industrial ultrasound conditions, and the chemical composition (carbohydrates, total phenols, and lipids) and the elemental profiles of the final, up-scaled downstream extracts were characterized.

Results: This work found that the maximum amount of protein in the final product was 378.31 g.kg-1 of the extract. Chemical characterization revealed that each 1 kg of extract had an average content of 326.19 g gallic acid equivalent as total phenols, 162.57 g glucose equivalent as carbohydrates, and 382.76 g of lipophilic compounds. Furthermore, when the extract was checked for hazardous elements, none were found in levels that could be considered a risk for human health.

Conclusion: The proposed semi-industrial strategy has the potential to contribute greatly to the valorization of grape seeds through the preparation of a protein-rich extract that can be used as an alternative to synthetic wine stabilizers and for the development of novel food and nutraceutical products. © 2024 Society of Chemical Industry.

Keywords: circular economy; grape seeds; protein; semi‐industrial scale; ultrasound‐assisted extraction; valorization.

PubMed Disclaimer

References

REFERENCES

    1. Fertahi S, Elalami D, Tayibi S, Taarji N, Lyamlouli K, Bargaz A et al., The current status and challenges of biomass biorefineries in Africa: A critical review and future perspectives for bioeconomy development. Sci Total Environ 870:162001 (2023). https://doi.org/10.1016/j.scitotenv.2023.162001.
    1. Duque‐Acevedo M, Ulloa‐Murillo LM, Belmonte‐Ureña LJ, Camacho‐Ferre F, Mercl F and Tlustoš P, Sustainable and circular agro‐environmental practices: A review of the management of agricultural waste biomass in Spain and The Czech Republic. Waste Manag Res 41:955–969 (2023). https://doi.org/10.1177/0734242X221139122.
    1. Gontard N, Sonesson U, Birkved M, Majone M, Bolzonella D, Celli A et al., A research challenge vision regarding management of agricultural waste in a circular bio‐based economy. Crit Rev Environ Sci Technol 48:614–654 (2018). https://doi.org/10.1080/10643389.2018.1471957.
    1. Nayak A and Bhushan B, An overview of the recent trends on the waste valorization techniques for food wastes. J Environ Manage 2018:352–370 (2019). https://doi.org/10.1016/j.jenvman.2018.12.041.
    1. Elgarahy AM, Eloffy MG, Alengebawy A, El‐sherif DM, Gaballah MS, Elwakeel KZ et al., Sustainable management of food waste; pre‐treatment strategies, techno‐economic assessment, bibliometric analysis, and potential utilizations: A systematic review. Environ Res 225:115558 (2023). https://doi.org/10.1016/j.envres.2023.115558.

Publication types

Grants and funding

LinkOut - more resources