Cited by 185Microbial Inactivation MethodsPhytochemicals and Antioxidant ActivitiesAgricultural and Biological Research

Recovery of lycopene from industrially derived tomato processing by-products by pulsed electric fields-assisted extraction

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Pataro, G., Carullo, D., Falcone, M., Ferrari, G.·2020·Innovative Food Science & Emerging Technologies

Abstract

The influence of pulsed electric fields (PEF) pre-treatment at different field strength (E = 1–5 kV/cm) and energy input (WT = 5–10 kJ/kg) on the recovery yield of lycopene in either acetone or ethyl lactate from industrial tomato peels residues, was investigated. The rate of lycopene extraction in both solvents decreased with time and was predicted rather satisfactorily (R² = 0.96–0.99) by the Peleg's model. Micrograph of tomato peels showed that PEF induced size reduction and separation between the plant cells likely due to pore formation and leakage of intracellular matter. Coherently, PEF treatment (5 kV/cm, 5 kJ/kg) significantly enhanced the extraction rate (27–37%), the lycopene yields (12–18%) and the antioxidant power (18.0–18.2%) in either acetone and ethyl lactate extracts, as compared with untreated samples. However, acetone gave the highest lycopene yield. HPLC analyses revealed that all-trans lycopene was the main carotenoid extracted and no degradation/isomerization phenomena occurred. The results obtained in this work suggest that the application of PEF prior to solid-liquid extraction with environmentally friendly solvents could represent a sustainable approach for the valorization of industrial tomato peels residues.Industrial processing of tomatoes generates large amount of by-products, mainly peels, which represent a cheap and abundant source of natural carotenoids, especially lycopene. The recovery lycopene from tomato peels residues is a crucial step for use in a wide range of industrial applications in food, cosmetic and pharmaceutical sectors as natural pigment and antioxidant. PEF pre-treatment allows to intensify the extractability of lycopene from of tomato processing by-products using environmentally friendly solvents, thus adding new value to the tomato processing chain, improving economic performances and decreasing waste problems.

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  • The application of pulsed electric field on tomato peel at energy inputs of 5-10 KJ/kg and field strength between 1-5 kV/cm enhanced lycopene yields by 12-18%.

    “The application of pulsed electric field on tomato peel at energy inputs of 5-10 KJ/kg and field strength between 1–5 kV/cm enhanced the lycopene yields by 12–18% [134].”

    From Food Waste Biorefinery: Pathway towards Circular Bioeconomy (2021) · cites this paper as [134]

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Authors
Pataro, G., Carullo, D., Falcone, M., & Ferrari, G.
Affiliations
University of Salerno (IT)
Corresponding author
Pataro, G.
Venue
Innovative Food Science & Emerging Technologies
Publisher
Elsevier BV
Published
2020-07
Volume
63
Pages
102369
ISSN
1466-8564 (ISSN-L)
OpenAlex
W3022107041
Cited by
185
References
46
Citations by year
2026: 22 · 2025: 26 · 2024: 36 · 2023: 32 · 2022: 40 · 2021: 23 · 2020: 6
FWCI
13.05
Type
journal article
Language
en
Open access
Locations
  • Innovative Food Science & Emerging Technologies (publishedVersion)
  • Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano) (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Microbial Inactivation Methods
  • Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Agricultural and Biological Research
Keywords
lycopene, pulsed electric field, tomato peel, tomato processing by-products, carotenoid extraction, ethyl lactate, acetone, extraction kinetics, antioxidant activity, waste valorization, natural pigments

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