Effect of Cryostructuring Treatment on Some Properties of Xanthan and Karaya Cryogels for Food Applications
Por:
Coria-Hernandez, Jonathan, Melendez-Perez, Rosalia, Mendez-Albores, Abraham, Arjona-Roman, Jose Luis
Publicada:
1 may 2021
Resumen:
Cryogels are novel materials because the manufacturing process known as
cryostructuring allows biopolymers to change their properties as a
result of repeated controlled freeze-thaw cycles. Hydrogels of xanthan
and karaya gums were evaluated after undergoing up to four controlled
freeze-thaw cycles in indirect contact with liquid nitrogen (up to -150
degrees C) to form cryogels. Changes in structural, molecular,
rheological, and thermal properties were evaluated and compared to those
of their respective hydrogels. Samples were also analyzed by Scanning
Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy with
Attenuated Total Reflection (FTIR-ATR), Rotational Rheology (RR),
Modulated Differential Scanning Calorimetry (MDSC) and zeta potential
(zeta). In general, significant differences (p < 0.05) between the
numbers of freeze-thaw cycles were found. Karaya cryogels were not
stable to repeated cycles of cryostructuring such as the three-cycle
xanthan cryogel, which has the best structural order (95.55%),
molecular interactions, and thermal stability, which allows the
generation of a novel material with improved thermal and structural
properties that can be used as an alternative in food preservation.
Filiaciones:
Coria-Hernandez, Jonathan:
Univ Nacl Autonoma Mexico, Super Studies Fac Cuautitlan, Multidisciplinary Res Unit, Lab Thermal & Struct Anal Mat & Foods 13, Cuautitlan 54714, Mexico
Melendez-Perez, Rosalia:
Univ Nacl Autonoma Mexico, Super Studies Fac Cuautitlan, Multidisciplinary Res Unit, Lab Thermal & Struct Anal Mat & Foods 13, Cuautitlan 54714, Mexico
Mendez-Albores, Abraham:
Univ Nacl Autonoma Mexico, Super Studies Fac Cuautitlan, Multidisciplinary Res Unit, Lab Mat Sci & Technol 14 A 1, Cuautitlan 54714, Mexico
Arjona-Roman, Jose Luis:
Univ Nacl Autonoma Mexico, Super Studies Fac Cuautitlan, Multidisciplinary Res Unit, Lab Thermal & Struct Anal Mat & Foods 13, Cuautitlan 54714, Mexico
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