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Nanocellulose in Biomedicine and Food Products: Current Status and Future Prospects

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Biomaterials".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 2292

Special Issue Editor


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Guest Editor
Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX, USA
Interests: colloids; interfaces; sustainable nanomaterials; nanocellulose; carbon storage; energy harvesting; nanocomposites; sustainable chemical processes

Special Issue Information

Dear Colleagues,

Nanocellulose is a fascinating material that has been the subject of extensive research for the last three decades. However, new discoveries and applications continue to emerge every year for cellulose nanofibers and nanocrystals. Some key nanocellulose properties, such as biocompabitliy, stiffness, light weight, low cost, and high surface area and surface activity, have led to the development of multiple biomedical and nutritional applications. A few examples include tissue engineering, vascular grafts design, development of wound dressings, implants, drug delivery, food stabilization, food thickening, emulsification, and reduced fat absorption.

The purpose of this Special Issue is to highlight recent advances of nanocellulosic materials in the health industry ranging from food products and nutritional supplements to biomedical applications. A special interest is placed on any medical and food application in which the nanomaterials are intended to be in contact with a portion of the human organism. Fundamental and applied articles involving unmodified, functionalized, and other novel nanocellulosic materials are requested for this Special Issue. Full research articles, communications, and review papers are all welcomed.

Dr. Esteban E Ureña-Benavides
Guest Editor

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Keywords

  • cellulose nanocrystals
  • cellulose nanofibers
  • tissue engineering
  • wound dressings
  • medical implants
  • nutritional supplements
  • emulsifier

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Published Papers (1 paper)

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Research

17 pages, 6965 KiB  
Article
Effect of the Interactions between Oppositely Charged Cellulose Nanocrystals (CNCs) and Chitin Nanocrystals (ChNCs) on the Enhanced Stability of Soybean Oil-in-Water Emulsions
by Sanjiv Parajuli, Mohammad Jahid Hasan and Esteban E. Ureña-Benavides
Materials 2022, 15(19), 6673; https://doi.org/10.3390/ma15196673 - 26 Sep 2022
Cited by 7 | Viewed by 1877
Abstract
Chitin nanocrystals (ChNCs) and cellulose nanocrystals (CNCs) have been recently used to stabilize emulsions; however, they generally require significant amounts of salt, limiting their applicability in food products. In this study, we developed nanoconjugates by mixing positively charged ChNCs and negatively charged CNCs [...] Read more.
Chitin nanocrystals (ChNCs) and cellulose nanocrystals (CNCs) have been recently used to stabilize emulsions; however, they generally require significant amounts of salt, limiting their applicability in food products. In this study, we developed nanoconjugates by mixing positively charged ChNCs and negatively charged CNCs at various ChNC:CNC mass ratios (2:1, 1:1, and 1:2), and utilized them in stabilizing soybean oil–water Pickering emulsions with minimal use of NaCl salt (20 mM) and nanoparticle (NP) concentrations below 1 wt%. The nanoconjugates stabilized the emulsions better than individual CNC or ChNC in terms of a reduced drop growth and less creaming. Oppositely charged CNC and ChNC neutralized each other when their mass ratio was 1:1, leading to significant flocculation in the absence of salt at pH 6. Raman spectroscopy provided evidence for electrostatic interactions between the ChNCs and CNCs, and generated maps suggesting an assembly of ChNC bundles of micron-scale lengths intercalated by similar-size areas predominantly composed of CNC. The previous measurements, in combination with contact angles on nanoparticle films, suggested that the conjugates preferentially exposed the hydrophobic crystalline planes of CNCs and ChNCs at a 1:1 mass ratio, which was also the best ratio at stabilizing soybean oil–water Pickering emulsions. Full article
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