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Sorption Behavior, Glass Transition and Flowability of Powdered Orange Co-product

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Abstract

The aim of this study was to contribute 100% to the circular economy models of the agri-food industry through the valorization of the whole orange juice co-product in order to offer it as a natural, versatile, high quality, and stable powdered food ingredient for human nutrition. Turning it into a cost-effective innovative product, with added value due to its high content of bioactive compounds, would lead to an increased competitiveness of the industrial sectors working with natural fibers. To ensure its efficient use for this purpose, co-product powder was characterized from a technological point of view in terms of the physicochemical aspects related to the presence of water and its ability to remain free-flowing and non-agglomerated, allowing for easy handling. The results of this study ensure the flowability of the freeze-dried orange co-product powder according to both the angle of repose (40°) and porosity (83%) values. However, it was also characterized as a hygroscopic product; therefore, specified conditions for a proper storage of the powdered co-product should be defined. In this case, both the refrigeration temperature and a relative humidity of under 35% should be established in order to avoid glass transition, thus remaining a free-flowing powder.

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All data generated or analyzed during this study are included in this published article.

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Acknowledgements

The authors thank the Ministerio de Economía y Competitividad (Spanish government) for the financial support given through the Project AGL 2017-89251-R (AEI/FEDER-UE).

Funding

This research was supported by the Spanish Ministerio de Economía y Competitividad.

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Contributions

MAS, MMC, and NM participated in the conceptualization, funding acquisition, data curation, formal analysis and investigation; MAS and NM in the methodology; MMC and NM in the Project Administration. MAS wrote the original draft; MMC and NM reviewed and edited the different versions of the paper. All authors read and approved the final manuscript.

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Correspondence to Nuria Martínez-Navarrete.

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The authors declare no competing interests.

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del Mar Camacho, M., Silva-Espinoza, M.A. & Martínez-Navarrete, N. Sorption Behavior, Glass Transition and Flowability of Powdered Orange Co-product. Mater Circ Econ 3, 17 (2021). https://doi.org/10.1007/s42824-021-00036-0

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  • DOI: https://doi.org/10.1007/s42824-021-00036-0

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