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. 2024 Sep 15:452:139509.
doi: 10.1016/j.foodchem.2024.139509. Epub 2024 May 3.

Tomato pomace food waste from different variants as a high antioxidant potential resource

Barbara Farinon  1 , Martina Felli  2 , Maria Sulli  3 , Gianfranco Diretto  3 , Daniel V Savatin  2 , Andrea Mazzucato  2 , Nicolò Merendino  4 , Lara Costantini  5
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Free article

Tomato pomace food waste from different variants as a high antioxidant potential resource

Barbara Farinon et al. Food Chem. .
Free article

Abstract

Pomaces obtained from three San Marzano tomato genotypes including the wild type (WT), Sun Black (SB), and colorless fruit epidermis (CL) were dried at 50 °C and analyzed for nutritional composition, total polyphenol (TPC), flavonoid (TFC) content, polyphenol qualitative profile, total antioxidant capacity (TAC), and antimicrobial activity. Commercial dried tomato powder (CTRP) was included as a control. No differences were detected nutritionally, in TPC and antimicrobial activity, but significant changes were observed for TFC and TAC, underlying variation in the phenolic profile. SB pomace (SBP) had the highest TFC and TAC. LC-HRMS analysis showed a flavonoid-enriched profile in SBP besides the exclusive presence of anthocyanins, with petanin and negretein as the most abundant. Among flavonoids, quercetin-hexose-deoxyhexose-pentose, naringenin, and rutin were the major. Overall, we showed the potential of dried tomato pomace, especially SBP, as an extremely valuable waste product to be transformed into a functional ingredient, reducing the food industry waste.

Keywords: Anthocyanins; Functional ingredient; San Marzano; Sun Black; Tomato pomace; Tomato waste.

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Conflict of interest statement

Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: AM is participating as inventors in owing the trademark “Sun Black” and the rights on the registered variety “Solenero.” The ownership is the University of Tuscia, Viterbo, Italy.

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