Ultrahigh pressure extraction of polysaccharide from Morinda officinalis and effect on the polysaccharide structure

ABSTRACT

In this study, we employed ultrahigh pressure extraction on polysaccharides from Morinda officinalis and evaluated its antioxidant activity. Other two extraction ways as supercritical assisted ultrasonic extraction (SCUE) and thermal reflux extraction were chosen as comparisons. Response surface analysis was used to optimize the Ultrahigh pressure extraction process, and the extraction rate and antioxidant activity of polysaccharides in vitro were also discussed. The results showed that the extraction rate of polysaccharides was significantly superior to the other two methods. Finally, we studied the effect of ultrahigh pressure on the microstructure of Morinda officinalis polysaccharides by infrared spectroscopy.

KEYWORDS:

• Ultrahigh pressure extraction
• polysaccharide of Morinda officinalis
• extraction rate
• antioxidant activity
• microstructure

Acknowledgements

Authors also acknowledge Yangxiao Lv from South China Technology University for helping the execution of the Supercritical experiment.

Disclosure statement

There is no conflict of interest with any entity or organization.

Additional information

Funding

This work was supported by the Guangdong key research and development program [grant number 2019B020212004]; Foreign Technology Cooperation Plan of Guangzhou [grant number 201907010031].