2. Academic Validation
  3. Nondestructive frozen protein ink: Antifreeze mechanism, processability, and application in 3D printing

Nondestructive frozen protein ink: Antifreeze mechanism, processability, and application in 3D printing

  • Int J Biol Macromol. 2024 Oct;277(Pt 2):134009. doi: 10.1016/j.ijbiomac.2024.134009.
Han Tian 1,  Xu Chen 1,  Jiajie Wu 1,  Jinhong Wu 2,  Jianlian Huang 3,  Xixi Cai 4,  Shaoyun Wang 5
Affiliations

Affiliations

  • 1 College of Chemical Engineering, College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, PR China.
  • 2 Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China.
  • 3 Key Laboratory of Refrigeration and Conditioning Aquatic Products Processing of Ministry of Agriculture and Rural Affairs, Xiamen 361022, PR China; Fujian Anjoy Foods Co. Ltd., Xiamen 361022, PR China.
  • 4 College of Chemical Engineering, College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, PR China. Electronic address: caixx@fzu.edu.cn.
  • 5 College of Chemical Engineering, College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, PR China. Electronic address: shywang@fzu.edu.cn.
PMID: 39043288 DOI: 10.1016/j.ijbiomac.2024.134009
Abstract

Antifreeze peptide (AFP) including in frozen protein ink is an inevitable trend because AFP can make protein ink suitable for 3D printing after freezing. AFP-based surimi ink (ASI) was firstly investigated, and the AFP significantly enhanced 3D printability of frozen surimi ink. The rheological and textural results of ASI show that the τ0, K, and n values are 321.14 Pa, 2.2259 × 105 Pa·sn, and 0.19, respectively, and the rupture strength of the 3D structure is up to 217.67 g. Circular dichroism, intermolecular force, and differential scanning calorimeter show ASI has more undenatured protein after freezing when compared that surimi ink (SI), which was denatured, and the α-helix changed to a β-sheet due to the destruction of hydrogen bonds and the exposure of hydrophobic groups. The water distribution, water holding capacity, and microstructure indicate that ASI effectively binds free water after freezing, while SI has weak water binding capacity and a large amount of free water is formed. ASI is suitable for 3D printing, and can print up to 40.0 mm hollow isolation column and 50.0 mm high Wuba which is not possible with SI. The application of AFP provides guidance for 3D printing frozen protein ink in food industry.

Keywords

3D printing; Antifreeze peptide; Frozen protein ink; Moisture distribution; Secondary structure.

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