Characterization of tomato processing by-product for use as a potential functional food ingredient: nutritional composition, antioxidant activity and bioactive compounds

International Journal of Food Sciences and Nutrition
Yasmini P A SilvaTânia A P C Ferreira

Abstract

Tomato pomace, a by-product generated during tomato processing, was collected at a large tomato processing industry. The by-product was mainly constituted of tomato skin (61.5%), and presented high moisture content (66.58 g.100g-1 wet basis). Among the nutrients, the highest content was of dietary fibre, followed by proteins and fat (50.74, 20.91, 14.14 g.100g-1 d.w., respectively). The pomace has high in vitro antioxidation capacity, especially when measured with the TEAC assay (224.81 μmol Trolox equivalent 100g-1 d.w.). This is due especially to the high amount of lycopene remaining in the by-product after processing (446.9 μg.g-1 d.w). The waste was fractioned into skin and seed fractions by sedimentation, resulting in the increase of lycopene yield by 55%, when using skin fraction as the source material in place of the whole pomace. This by-product shows great potential for being used as a source of the ingredients of high nutritional value, especially dietary fibre and lycopene.

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Citations

Apr 1, 2020·The Science of the Total Environment·Sriram K Vidyarthi, Christopher W Simmons
Aug 8, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Valentina Noemi MadiaAntonella Messore
Aug 27, 2021·Scientific Reports·Wellington Souto RibeiroFernando Luiz Finger
Aug 28, 2021·Antioxidants·Ignacio Gutiérrez-Del-RíoFelipe Lombó
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Aug 28, 2021·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·Manoj KumarMohamed Mekhemar

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