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• Journal article
  Aravena RI, Hallett JP, 2023,

  Plant sterol precipitation in system composed by fatty acids using in-situ synthesized ionic liquids

  , CHEMICAL ENGINEERING JOURNAL, Vol: 460, ISSN: 1385-8947
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  • Citations: 2
• Journal article
  Al Ghatta A, Perry JM, Maeng H, Lemus J, Hallett JPet al., 2023,

  Sustainable and efficient production of furoic acid from furfural through amine assisted oxidation with hydrogen peroxide and its implementation for the synthesis of alkyl furoate

  , RSC SUSTAINABILITY, Vol: 1, Pages: 303-309
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• Journal article
  Aravena RI, Hallett JP, 2023,

  Protic ionic liquids based on fatty acids: A mixture of ionic and non-ionic molecules

  , JOURNAL OF MOLECULAR LIQUIDS, Vol: 373, ISSN: 0167-7322
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  • Citations: 9
• Journal article
  Abouelela AR, Nakasu PYS, Hallett JP, 2023,

  Influence of Pretreatment Severity Factor and Hammett Acidity on Softwood Fractionation by an Acidic Protic Ionic Liquid

  , ACS SUSTAINABLE CHEMISTRY & ENGINEERING, ISSN: 2168-0485
  • Author Web Link
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  • Citations: 27
• Journal article
  Piercy E, Verstraete W, Ellis PR, Banks M, Rockström J, Smith P, Witard OC, Hallett J, Hogstrand C, Knott G, Karwati A, Rasoarahona HF, Leslie A, He Y, Guo Met al., 2022,

  A sustainable waste-to-protein system to maximise waste resource utilisation for developing food- and feed-grade protein solutions

  , Green Chemistry, Vol: 25, Pages: 808-832, ISSN: 1463-9262

  A waste-to-protein system that integrates a range of waste-to-protein upgrading technologies has the potential to converge innovations on zero-waste and protein security to ensure a sustainable protein future. We present a global overview of food-safe and feed-safe waste resource potential and technologies to sort and transform such waste streams with compositional quality characteristics into food-grade or feed-grade protein. The identified streams are rich in carbon and nutrients and absent of pathogens and hazardous contaminants, including food waste streams, lignocellulosic waste from agricultural residues and forestry, and contaminant-free waste from the food and drink industry. A wide range of chemical, physical, and biological treatments can be applied to extract nutrients and convert waste-carbon to fermentable sugars or other platform chemicals for subsequent conversion to protein. Our quantitative analyses suggest that the waste-to-protein system has the potential to maximise recovery of various low-value resources and catalyse the transformative solutions toward a sustainable protein future. However, novel protein regulation processes remain expensive and resource intensive in many countries, with protracted timelines for approval. This poses a significant barrier to market expansion, despite accelerated research and development in waste-to-protein technologies and novel protein sources. Thus, the waste-to-protein system is an important initiative to promote metabolic health across lifespans and tackle the global hunger crisis.

  • Abstract
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• Journal article
  Brandl P, Bui M, Hallett JP, Mac Dowell Net al., 2022,

  A century of re-exploring CO₂ capture solvents

  , INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, Vol: 120, ISSN: 1750-5836
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  • Citations: 11
• Journal article
  Shmool TA, Martin LK, Matthews RP, Hallett JPet al., 2022,

  Ionic liquid-based strategy for predicting protein aggregation propensity and thermodynamic stability

  , JACS Au, Vol: 2, Pages: 2068-2080, ISSN: 2691-3704

  Novel drug candidates are continuously being developed to combat the most life-threatening diseases; however, many promising protein therapeutics are dropped from the pipeline. During biological and industrial processes, protein therapeutics are exposed to various stresses such as fluctuations in temperature, solvent pH, and ionic strength. These can lead to enhanced protein aggregation propensity, one of the greatest challenges in drug development. Recently, ionic liquids (ILs), in particular, biocompatible choline chloride ([Cho]Cl)-based ILs, have been used to hinder stress-induced protein conformational changes. Herein, we develop an IL-based strategy to predict protein aggregation propensity and thermodynamic stability. We examine three key variables influencing protein misfolding: pH, ionic strength, and temperature. Using dynamic light scattering, zeta potential, and variable temperature circular dichroism measurements, we systematically evaluate the structural, thermal, and thermodynamic stability of fresh immunoglobin G4 (IgG4) antibody in water and 10, 30, and 50 wt % [Cho]Cl. Additionally, we conduct molecular dynamics simulations to examine IgG4 aggregation propensity in each system and the relative favorability of different [Cho]Cl-IgG4 packing interactions. We re-evaluate each system following 365 days of storage at 4 °C and demonstrate how to predict the thermodynamic properties and protein aggregation propensity over extended storage, even under stress conditions. We find that increasing [Cho]Cl concentration reduced IgG4 aggregation propensity both fresh and following 365 days of storage and demonstrate the potential of using our predictive IL-based strategy and formulations to radically increase protein stability and storage.

  • Abstract
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• Journal article
  Clarke CJ, Baaqel H, Matthews RP, Chen Y, Lovelock KRJ, Hallett JP, Licence Pet al., 2022,

  Halometallate ionic liquids: thermal properties, decomposition pathways, and life cycle considerations

  , GREEN CHEMISTRY, Vol: 24, Pages: 5800-5812, ISSN: 1463-9262
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  • Citations: 14
• Journal article
  Hennequin LM, Kim S, Monroe EA, Eckles TP, Beck N, Mays WD, Fennell PS, Hallett JP, George A, Davis RWet al., 2022,

  Reclamation of nutrients, carbon, and metals from compromised surface waters fated to the Salton Sea: Biomass production and ecosystem services using an attached periphytic algae flow-way

  , ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS, Vol: 66, ISSN: 2211-9264
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• Journal article
  Al Ghatta A, Aravenas RC, Wu Y, Perry JM, Lemus J, Hallett JPet al., 2022,

  New Biobased Sulfonated Anionic Surfactants Based on the Esterification of Furoic Acid and Fatty Alcohols: A Green Solution for the Replacement of Oil Derivative Surfactants with Superior Proprieties

  , ACS SUSTAINABLE CHEMISTRY & ENGINEERING, ISSN: 2168-0485
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  • Citations: 24

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