Chitin nanospheres from chitin

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Presentation transcript:

Chitin nanospheres from chitin Suvi Kyyrö

Chitin and chitosan (3) (1) (2) (4) Rinaudo, M. Chitin and chitosan: Properties and applications, Progress in Polymer science (2006) p 603-632

Nanospheres and nanocapsules (5) Nanocapsule

Preparation methods Solid-liquid phase separation Coacervation/precipitation Emulsion cross linking Ionotropic gelation And many more…

Case example 1: Chitosan hollow nanosparticles production 0,05% Chitosan in acetic acid aqueous solution Liquid nitrogen freezing (2-24 h) N2 Freeze-drying Scanning electron microscopy (SEM) inspection (6) Liu, M. Yang, J. Ao, P. Zhou, C. Preparation and characterization of chitosan hollow nanospheres for anticancer drug curcumin delivery, Materials Letters (2015) p 115-117

Case example 2: Phosphoric acid-based chitin nanospheres preparation Chitin in H3PO4 solution Shaking bath (150 rpm, 4h) (7) Scanning electron microscopy (SEM) inspection Phosphoric acid removal with centrifugation and dialysis (8) Wu, T. Wang, G. Gao, C. Chen, Z. Feng, L. Wang, P. Zeng, X. Wu, Z. Phosphoric acid-based preparing of chitin nanofibers and nanospheres, Cellulose (2016) p 477-491

Conclusions Chitin is an abundant resource Nanospheres especially propising for pharmaceutical purposes Multiple potential preparation methods

References Article sources: Rinaudo, M. Chitin and chitosan: Properties and applications, Progress in Polymer science (2006) p 603-632 Liu, M. Yang, J. Ao, P. Zhou, C. Preparation and characterization of chitosan hollow nanospheres for anticancer drug curcumin delivery, Materials Letters (2015) p 115-117 Mitra, A. Dey, B. Chitosan microspheres in novel drug delivery systems, Indian Journal of Pharmaceutical Sciences (2011) p 355-366 Wu, T. Wang, G. Gao, C. Chen, Z. Feng, L. Wang, P. Zeng, X. Wu, Z. Phosphoric acid-based preparing of chitin nanofibers and nanospheres, Cellulose (2016) p 477-491

References Picture sources: The Blue Sea Food Company (http://www.devoncrab.com/index.php/english/blue-sea-crab/), 6.3.2016 BioQuick news (http://www.bioquicknews.com/node/2413), 5.3.2016 3) DK find out (http://www.dkfindout.com/uk/animals-and-nature/mushrooms/), 5.3.2016 4) University of Aberdeen (https://www.abdn.ac.uk/ims/profiles/n.gow), 6.3.2016 5) Nanotechweb (http://nanotechweb.org/cws/article/tech/34049/1/070506-1), 6.3.2016 6) Millrock technology (http://www.millrocktech.com/freeze-dryers/), 7.3.2016 7) Bandelin (http://www.copybook.com/pharmaceutical/companies/bandelin/articles/sonoshake-ultrasonic-shaking-bath), 7.3.2016 VWR (https://us.vwr.com/store/content/externalContentPage.jsp?path=/en_US/rd_centrifugation.jsp), 7.3.2016