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Advisor(s)
Abstract(s)
This manuscript focuses on the production of polymeric matrices enriched in minerals
and antioxidant compounds. The biopolymers employed are obtained from different by-products
of the agro-food industry (porcine plasma protein, pea protein concentrate and soy protein isolate),
which helps to revalorize them. Two different manufacturing techniques are employed to produce
these matrices: 3D-printing and injection molding. Bioactivity was enhanced through immersion of
the samples in magnesium glutamate and iron lactate solutions. To incorporate these minerals and
bioactive compounds into the matrices, two additional stages are required: (1) an immersion stage in a
mineral/bioactive containing solution, which allows simultaneous removal of the glycerol employed
as plasticizer and entrapment of the minerals and bioactive compounds; and (2) a subsequent freezedrying
stage. Matrices produced through these manufacturing processes were assessed through water
uptake capacity, mineral analysis, bioactivity and color measurements. The studied matrices have
great potential in the food industry, as the threshold for claiming a significant mineral content was
reached after the immersion stage. The presence of bioactive compounds could avoid the degradation
of these matrices when food processing includes stages at relatively high temperatures.
Description
Keywords
proteins mineral retention astaxanthin antioxidant compounds 3D-printing injection molding
Pedagogical Context
Citation
Álvarez-Castillo, E.; Oliveira, S.; Bengoechea, C.; Sousa, I.; Raymundo, A.; Guerrero, A. A circular economy approach in the development of superabsorbent Polymeric matrices: evaluation of the mineral retention. Sustainability 2023, 15, 12088.
Publisher
MDPI