The objective of this research was to evaluate the antimicrobial, antioxidant and darkening inhibitory
activities of Maillard reaction products (MRPs) prepared from chitosan and xylose, and their effects on
the preservation and quality of semi-dried noodles. The development of brown color and UV absorbance
changes indicated the proceeding of Maillard reaction. The antimicrobial activity, reducing power, DPPH•
radical scavenging activity, copper-chelating activity and PPO inhibitory effects of chitosan–xylose conjugates
increased with the reaction. Addition of MRPs could improve the textural and cooking quality of
semi-dried noodles. Incorporation of 0.35% MRPs (6 h) into semi-dried noodle resulted in an extension of
shelf life for more than 7 days than the control noodles (at room temperature). The discoloration caused
by the addition of MRPs was limited, and MRPs could inhibit darkening of the noodle effectively. Results
suggested that the MRPs could be used as a novel promising preservative for semi-dried noodles.
The objective of this research was to evaluate the antimicrobial, antioxidant and darkening inhibitoryactivities of Maillard reaction products (MRPs) prepared from chitosan and xylose, and their effects onthe preservation and quality of semi-dried noodles. The development of brown color and UV absorbancechanges indicated the proceeding of Maillard reaction. The antimicrobial activity, reducing power, DPPH•radical scavenging activity, copper-chelating activity and PPO inhibitory effects of chitosan–xylose conjugatesincreased with the reaction. Addition of MRPs could improve the textural and cooking quality ofsemi-dried noodles. Incorporation of 0.35% MRPs (6 h) into semi-dried noodle resulted in an extension ofshelf life for more than 7 days than the control noodles (at room temperature). The discoloration causedby the addition of MRPs was limited, and MRPs could inhibit darkening of the noodle effectively. Resultssuggested that the MRPs could be used as a novel promising preservative for semi-dried noodles.
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