Related Experiment Video
Updated: Sep 11, 2025
Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
Betaine-based natural deep eutectic solvents (NADESs) for enhanced cryoprotection: Insights into hydrogen bonding
Yan Li1, Qianqian Liang1, Xin Jiang1
1College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
Abstract:
The physicochemical properties, hydrogen-bonding networks, and freezing and thawing behaviors of betaine-based NADESs were investigated in this study. Results showed that the NADESs with moderate acidity (pH 6.66-8.10) are suitable for meat and aquatic products and their mild antioxidant activities may reduce the oxidative damage of frozen foods during cryopreservation. Moreover, the hydrogen bond networks in NADESs weaken with higher water content but strengthen at lower temperatures. The NADES possesses a more potent antifreeze property compared to water and sucrose, remaining unfrozen even at -80 °C. Furthermore, the presence of NADESs can mitigate the formation and growth of ice nucleation and suppress the recrystallization process. Additionally, the thawing time can be shortened by 2-4 times with the assistance of NADESs when compared with the water. The simultaneous effects of NADESs during freezing, storage and thawing stages can provides extensive cryoprotection. Applications in frozen shrimp surimi further announced the potentials of NADESs as cryoprotectants for the frozen food industry.
More Related Videos
Related Concept Videos
03:12Freezing Point Depression and Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
02:05Entropy and Solvation
02:34Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
02:12Solvating Effects
02:17Physical Properties of Ethers
An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
Ethers can act as hydrogen bond acceptors, making them more water-soluble than hydrocarbons, but since ethers cannot act as hydrogen bond donors, they are much less soluble in water than alcohols. Ethers are considered...
01:04Hydrogen Bonds