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Enhancement of the antioxidant and hypolipidemic activities of Puerariae radix by fermentation with Aspergillus niger

  • Qin Huang
  • Hao Zhang
  • Dan XueEmail author
Article
  • 24 Downloads

Abstract

Puerariae radix (PR) is a traditional Chinese food and medicine. In this study, the chemical profile and bioactivities of PR fermented with Aspergillus niger (PFA) were investigated. Based on HPLC analysis, PFA chemical profile changed and total phenols increased by 12.5% relative to PR. Consequently, the in vitro antioxidant activity significantly improved. According to the blood lipid analysis in mice, PFA showed a better ability to inhibit the increased blood lipid levels induced by Triton WR-1339 than PR. In a quantitative real-time PCR (qRT-PCR) study, PFA up-regulated cholesterol 7-alpha hydroxylase (CYP7A1) and low-density lipoprotein receptor mRNA expression, which were 50% and 44.8% higher than the levels induced by high-dose PR. Conversely, 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCoAR) mRNA expression was down-regulated to 46.8% lower than the levels induced by high-dose PR. The qRT-PCR results suggested that PFA displayed better hypolipidemic activity than PR, due to its superior ability to regulate mRNA expression.

Keywords

Antioxidant Aspergillus niger Hypolipidemic Puerariae radix Solid fermentation 

Notes

Acknowledgements

This research was financially supported by Sichuan Science and Technology Support Program (No. 2014S20131).

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interest.

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Copyright information

© The Korean Society of Food Science and Technology 2019

Authors and Affiliations

  1. 1.Department of Pharmacognosy, West China School of PharmacySichuan UniversityChengduChina

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