Antifreeze agents play a critical role in various fields including tissue engineering, gene therapy, therapeutic protein production, and transplantation. Commonly used antifreeze agents such as DMSO and other organic substances are known to have cytotoxic effects. Antifreeze proteins sourced from cold-adapted organisms offer a promising solution by inhibiting ice crystal formation; however, their effectiveness is hindered by a dynamic ice-shaping (DIS) effect and thermal hysteresis (TH) properties. In response to these limitations, antifreeze peptides (AFPs) have been developed as alternatives to antifreeze proteins, providing similar antifreeze properties without the associated drawbacks. This review explores the methods for acquiring AFPs, with a particular emphasis on chemical synthesis. It aims to offer valuable insights and practical implications to drive the realm of sub-zero storage.
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http://dx.doi.org/10.3390/molecules29204913 | DOI Listing |
Food Chem
December 2024
Department of Food Science, The University of Tennessee, Knoxville (UTK), TN 37996, United States. Electronic address:
The glycomacropeptide (GMP) present in the cheese whey byproduct can be an excellent antifreezing agent due to its unique molecular structure. The objective of this study was to concentrate this peptide and investigate its ice recrystallization inhibition (IRI) ability. Heat denaturation of the non-GMP proteins and preparative liquid chromatography were used to create fraction 1 (F1) and fraction 2 (F2) and these were tested using the splat assay and a modified sucrose sandwich assay to investigate their IRI activity.
View Article and Find Full Text PDFLangmuir
January 2025
School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China.
Ice formation poses a significant challenge across various fields, from industrial processes to biological preservation. Developing antifreeze agents and recognizing the antifreeze mechanism have gained considerable attention. Herein, a series of poly(l-methionine) derivatives, poly(-carboxymethyl-l-methionine sulfonium) (PMetA), poly(-methyl-l-methionine sulfonium chloride) (PMetM), and poly(-carbamidomethyl-l-methionine sulfonium chloride) (PMetAM), with carboxyl, methyl, and acetamide groups, respectively, are synthesized and investigated for antifreeze.
View Article and Find Full Text PDFFood Chem
March 2025
Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, 100048 Beijing, China; Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, 100048 Beijing, China. Electronic address:
This study explored using small molecular weight hydrolysates from enzymolyzed thawed drip as cryoprotectants to preserve myofibrillar protein quality in pork patties during freeze-thaw cycles. Hydrolysates were added at 0.36 %, 0.
View Article and Find Full Text PDFSmall
January 2025
Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing, 100084, China.
The low plating/stripping efficiency of zinc anodes, dendrite growth, and high freezing points of aqueous solutions hinder the practical application of aqueous zinc-ion batteries. This paper proposes a zwitterionic permeable network solid-state electrolyte based on the "anchor-capture" effect to address these problems by incorporating proline (Pro, a biological antifreeze agent) into the electrolyte. Extensive validation tests, Quantum Chemistry (QC) calculations, Molecular Dynamics (MD) Simulations, and ab initio molecular dynamics simulations consistently indicate that the amino groups in proline adsorb onto the Zn metal surface, stabilizing the zinc anode-electrolyte interface, suppressing side reactions from water decomposition, and homogenizing zinc-ion flux.
View Article and Find Full Text PDFBioact Mater
February 2025
The Laboratory for Advanced Functional/Medicinal Polymers & Smart Drug Delivery Technologies, The Wolfson Faculty of Chemical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel.
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