Obtaining glycoconjugates of marine origin via Maillard reaction and their cytotoxic effect: an alternative for the use of animal byproducts

Blanca Areli Mondaca-Navarro, Wilfrido Torres-Arreola, Luz Angélica Ávila-Villa, Alma Guadalupe Villa-Lerma, Adrián Hernández-Mendoza, Abraham Wall-Medrano, Roberto Rodríguez Ramírez*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


BACKGROUND: Protein glycation by Maillard reaction is commonly used to improve the functional and bioactive properties of food proteins. It is also known that this glycation method can be accelerated by heat without the need for chemical reagents that could be harmful to health. In this study, glycoconjugates were obtained from a mixture of connective tissue proteins (CTP) from jumbo squid (Dosidicus gigas) and two different sugars, dextran (DEX; 10 kDa) and glucose (GLU), using protein-to-carbohydrate ratios of 1:2 and 1:3, in solution at 50 °C for 6 h. The glycation products were characterized by means of their physicochemical properties and cytotoxic effect. RESULTS: The intensity of the browning measured at A420nm and A294nm in glycoconjugates showed no significant difference (P < 0.05). CTP-DEX (1:2) and CTP-DEX (1:3) were those products with the greatest fluorescence related to the intermediate stage in the Maillard reaction, and also with the highest degree of glycation, which was confirmed using o-phthaldialdehyde assay and Fourier transform infrared analysis. The values of cellular viability for CTP-GLU (1:3), CTP-DEX (1:2, 1:3) as well as CTP (0, 6 h) were around 92–103%. CONCLUSIONS: The operational parameters used in the glycation process achieved the formation of glycoconjugates from proteins of D. gigas, showing no cytotoxic effect on the HaCaT cell line. This research proposes an alternative for the modification of proteins and opens the way to future investigations regarding the bioactivity of these macromolecules to have applications for the use of byproducts in food science and technology.

Original languageEnglish
Pages (from-to)3228-3235
Number of pages8
JournalJournal of the Science of Food and Agriculture
Issue number7
StatePublished - 1 May 2020

Bibliographical note

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© 2020 Society of Chemical Industry


  • Dosidicus gigas
  • Maillard reaction
  • cytotoxic
  • glycation


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