Aarhus Universitets segl

Nanocellulose fractionated from TEMPO-mediated oxidation of cellulose as an energy-free ingredient for stabilizing Pickering emulsion

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  • Ziqian Li
  • ,
  • Sampson Anankanbil, International Flavors and Fragrances, Inc.
  • ,
  • Jacob Nedergaard Pedersen
  • ,
  • Marcin Nadzieja
  • Zheng Guo

To seek for novel effective low-energy renewable stabilizer for food emulsion system, this work reported the preparation of water-insoluble nanocellulose fraction from TEMPO (2, 2, 6, 6-Tetramethylpiperidine 1-oxyl) mediated oxidation, and its application as an excellent low-energy stabilizer in Pickering emulsion. The obtained Insoluble TEMPO-mediated Oxidized Cellulose (ITOC) from sequential processes by TEMPO-mediated oxidation, fractionated by centrifugation, dialysis and freeze drying, afforded high oxidation degree (25.12 ± 2.57 %), high carboxylate content (1.47 ± 0.14 mmol COO -/g), and low contact angle (27.5 ± 0.1°). The impact of ITOC dosages and oil contents on the fabrication and stabilization of Pickering emulsion was investigated. A lower dosage of ITOC (0.9 %, wt %) afforded to stabilize concentrated Pickering emulsion (50 wt % oil content) with smaller average droplet size (about 1400 nm). High storage stability and the stability against environmental stress saline conditions (100–200 mmol/L), both neutral and basic conditions (pH 7–11) and a broad range of temperatures (30–90 °C) was found. As a novel kind of low-energy biomass-based particle stabilizer, ITOC might have great potential for industrial applications in food and related sectors.

Artikelnummer 108795
TidsskriftBiochemical Engineering Journal
Antal sider11
StatusUdgivet - feb. 2023

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