Chemical composition and bioactivity of oilseed cake extracts obtained by subcritical and modified subcritical water

J. Svarc-Gajic*, F. Rodrigues, M. M. Moreira, C. Delerue-Matos, S. Morais, O. Dorosh, A. M. Silva, Andrea Bassani, V. Dzedik, Giorgia Spigno

*Autore corrispondente per questo lavoro

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

Abstract

Recovery of bioactive compounds from biowaste is gaining more and more interest in circular economy models. The oilseed cakes are usually insufficiently exploited by most technologies since they represent valuable matrices abundant in proteins, minerals, and phytochemicals, but their use is mostly limited to feed ingredients, fertilizers or biofuel production. This study was thus focused on the exploration of new valorization pathways of oilseed cakes by subcritical water, representing a safe and economic alternative in the creation of value chains. Pumpkin, hemp, and flax seed cakes were treated with subcritical water in nitrogen and carbon‑dioxide atmospheres, as well as in nitrogen atmosphere with the addition of acid catalyst. The degradation of carbohydrate fraction was studied by quantifying sugars and sugar degradation products in the obtained extracts. The extracts obtained under different conditions were further compared chemically with respect to total phenols and flavonoids, as well as to the content of individual phenolic compounds. Furthermore, the effects of subcritical water treatment conditions on antioxidant, antiradical and cytotoxic properties of thus obtained extracts were defined and discussed.
Lingua originaleEnglish
pagine (da-a)N/A-N/A
Numero di pagine14
RivistaBioresources and Bioprocessing
DOI
Stato di pubblicazionePubblicato - 2022

Keywords

  • Oilseed cakes
  • Phenolics
  • Subcritical water
  • Valorization

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