Xanthan gum-based microspheres and hydrogels, useful for targeted colorectal release of omega-3 polyunsaturated fatty acids (PUFAs), were successfully prepared and characterized. In particular, the microsphere size, as well as the high hydrogel swelling degree at pH 7.4, and the omega-3 PUFA loading efficiency of both the materials suggested their suitability for colorectal delivery. Moreover, the antioxidant efficiency of the xanthan gum based materials suggests their ability to protect the omega-PUFA cargo. We demonstrated that α-linolenic acid (ALA 18:3ω-3) carried by the materials increased significantly its ability to reduce colorectal cancer cell growth in vitro. On the contrary, docosahexaenoic acid (DHA, 22:6ω-3) enclosed in the hydrogel formulation did not enhance its already high anti-neoplastic potential. The improved anti-neoplastic efficacy of ALA enclosed in both the xanthan gum-based formulations further supports the hypothesis of a potential use of this omega-3 PUFA as a suitable and more sustainable alternative to the fish-derived DHA.

Xanthan gum-based materials for omega-3 PUFA delivery: Preparation, characterization and antineoplastic activity evaluation

Trombino, Sonia;Cassano, Roberta;
2019

Abstract

Xanthan gum-based microspheres and hydrogels, useful for targeted colorectal release of omega-3 polyunsaturated fatty acids (PUFAs), were successfully prepared and characterized. In particular, the microsphere size, as well as the high hydrogel swelling degree at pH 7.4, and the omega-3 PUFA loading efficiency of both the materials suggested their suitability for colorectal delivery. Moreover, the antioxidant efficiency of the xanthan gum based materials suggests their ability to protect the omega-PUFA cargo. We demonstrated that α-linolenic acid (ALA 18:3ω-3) carried by the materials increased significantly its ability to reduce colorectal cancer cell growth in vitro. On the contrary, docosahexaenoic acid (DHA, 22:6ω-3) enclosed in the hydrogel formulation did not enhance its already high anti-neoplastic potential. The improved anti-neoplastic efficacy of ALA enclosed in both the xanthan gum-based formulations further supports the hypothesis of a potential use of this omega-3 PUFA as a suitable and more sustainable alternative to the fish-derived DHA.
Carrier delivery; Colon cancer cells; Hydrogels; Omega-3; Targeted treatment; Xanthan gum; Organic Chemistry; Polymers and Plastics; Materials Chemistry2506 Metals and Alloys
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/289027
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