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Advisor(s)
Abstract(s)
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.
Description
Keywords
Oilseed cakes Subcritical water Valorization Phenolics Sugars Bioactivity
Citation
Publisher
Springer