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Novel Sustainable Superabsorbents: A One-Pot Method for Functionalization of Side-Stream Potato Proteins
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0002-2073-7005
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0003-2517-5328
SLU Swedish Univ Agr Sci, Fac Landscape Planning Hort & Crop Prod Sci, Dept Plant Breeding, Sundsvagen 10, S-23053 Alnarp, Sweden..
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2019 (English)In: ACS SUSTAINABLE CHEMISTRY & ENGINEERING, ISSN 2168-0485, Vol. 7, no 21, p. 17845-17854Article in journal (Refereed) Published
Abstract [en]

The functionalization of inexpensive potato protein concentrate (PPC) is presented as a simple and easily scalable method to produce bio-based superabsorbent powders. Five nontoxic acylating agents were evaluated at different reaction temperatures for solvent-free acylation of the protein. The best results were obtained for succinic anhydride (SA) and a reaction temperature of 140 degrees C. These conditions resulted in efficient functionalization that provided formation of a useful network, which allowed high uptake of fluids and little material disintegration during the uptake, that is, due to protein hydrolysis during the functionalization. The SA-acylated PPC showed increased water and saline swelling capacities of 600 and 60%, respectively, as compared to untreated PPC. The acylated potato protein also showed a saline liquid holding capacity of approximately 50% after centrifugation at 1230 rpm for 3 min, as well as a significant blood swelling capacity of 530%. This blood swelling represents more than 50% of that of a commercial fossil-based superabsorbent (SAP) used for blood absorption in sanitary health products. The swelling properties of these inexpensive protein-based acylated materials highlight their potential as sustainable SAP materials (from industrial side-streams) in applications such as daily care products that are currently dominated by fossil-based SAPs.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 7, no 21, p. 17845-17854
Keywords [en]
potato protein, acylation functionalization, superabsorbents, sustainable, bio-based material
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-264290DOI: 10.1021/acssuschemeng.9b04352ISI: 000494894200033Scopus ID: 2-s2.0-85072924587OAI: oai:DiVA.org:kth-264290DiVA, id: diva2:1374836
Note

QC 20191203

Available from: 2019-12-03 Created: 2019-12-03 Last updated: 2020-01-03Bibliographically approved

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Capezza, Antonio JoseGlad, DavidOzeren, Husamettin DenizOlsson, RichardHedenqvist, Mikael S.

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