Carboxylated chitosan improved the stability of phycocyanin under acidified conditions (Record no. 54798)

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fixed length control field 02404nam a2200277Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625162454.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-20716
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 250602s9999 xx |||||s2 |||| ||und|d
245 10 - TITLE STATEMENT
Title Carboxylated chitosan improved the stability of phycocyanin under acidified conditions
490 0# - SERIES STATEMENT
Volume/sequential designation International Journal of Biological Macromolecules, 233, p.123474, 2023
520 3# - SUMMARY, ETC.
Summary, etc. Phycocyanin, a natural blue colorant, derived from Spirulina platensis, is now widely used in the food industry. However, its main drawbacks are loss of color and denature of structure in an acidic environment. In this study, carboxylated chitosan (0.1 percent-1 percent w/v)was chosen as an additive in acid-denatured phycocyanin for preserving phycocyanin's blue color and natural structure. Zeta-potential and particle size revealed that the carboxylated chitosan with high negative charge adsorbed on phycocyanin and provided stronger electrostatic repulsion to overcome the protein aggregation. Ultraviolet-visible absorption spectrum and fluorescence spectroscopy showed that the carboxylated chitosan recovered the microenvironment of tetrapyrrole chromophores and ?-subunits, which led the secondary structure changed and the trimers depolymerized into the monomers changed by the acidic environment. Furthermore, Fourier transform infrared spectroscopy revealed highly negatively charged carboxylated chitosan with the groups (NH2, COOH and OH)could restored the microenvironment of tetrapyrrole chromophores and ?-subunits of phycocyanin, and interact with phycocyanin through hydrogen bonding, NH bonding, ionic bonding and van der Waals, which led to a change in secondary structure and depolymerization of trimers into monomers. Our study demonstrated the carboxylated chitosan played a beneficial role in recovering the structure of acid-denatured phycocyanin and its blue color.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ACID DEGRADATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CARBOXYLATED CHITOSAN
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PHYCOCYANIN
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element RENATURATION
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zhuxin, L.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Biao, Y.Badamkhand, D.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Yifan, C.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Honghong, S.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Xiao, X.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Chongjiang, C.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1S-w_pwOnC3WQ9UahXiBAzGvs83j8CuaI/view?usp=drivesdk">https://drive.google.com/file/d/1S-w_pwOnC3WQ9UahXiBAzGvs83j8CuaI/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme Clasificación local
Koha item type Documentos solicitados
Holdings
Lost status Source of classification or shelving scheme Damaged status Not for loan Collection Home library Current library Shelving location Date acquired Total checkouts Full call number Date last seen Price effective from Koha item type
  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-20716 25.06.2025 25.06.2025 Documentos solicitados