Volume 46, Issue 12 e17155
ORIGINAL ARTICLE

Study on extraction, isolation, and biological activity of saponins from quinoa bran

Minghui Tan

Minghui Tan

College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang, China

Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China

Search for more papers by this author
Qingsheng Zhao

Corresponding Author

Qingsheng Zhao

Division of Green Biochemical Process, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China

University of Chinese Academy of Sciences, Beijing, China

Correspondence

Qingsheng Zhao and Bing Zhao, Division of Green Biochemical Process, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 1 North 2nd Street, Zhongguancun, Haidian District, Beijing 100190, China.

Email: [email protected] and [email protected]

Search for more papers by this author
Xiaodong Wang

Xiaodong Wang

Division of Green Biochemical Process, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China

Search for more papers by this author
Bing Zhao

Corresponding Author

Bing Zhao

Division of Green Biochemical Process, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China

Correspondence

Qingsheng Zhao and Bing Zhao, Division of Green Biochemical Process, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 1 North 2nd Street, Zhongguancun, Haidian District, Beijing 100190, China.

Email: [email protected] and [email protected]

Search for more papers by this author
First published: 12 September 2022
Citations: 4

Abstract

Quinoa (Chenopodium quinoa Willd) contains 2 to 5% of saponins, which are mainly exist in the bran of seeds in the form of oleanane-type triterpenoid glycosides or sapogenins. In this study, the extraction process of total saponins from quinoa bran has been optimized. The results showed that the optimal extraction conditions for quinoa saponins were extraction time of 2 h, ethanol concentration of 70%, solid–liquid ratio of 1:25 (g/ml), and extraction temperature of 70°C. Macroporous resin separation test demonstrated that HPD600 resin had an excellent adsorption and desorption capacities for the separation of quinoa saponins. The antioxidant experiment demonstrated that the EC50 of quinoa saponins against DPPH-free radical, ABTS-free radical, ·OH-free radical, and O2-free radical were 0.10, 0.51, 0.57, and 0.17 mg/ml, respectively. The scavenging effect of the saponins on O2-free radical was stronger than that of Vc. The reducing power was equivalent to 1.28% of that of Vc. The anticancer test showed that when the concentration of quinoa saponins was 0.5 mg/ml, the inhibitory rate on HepG-2 cell was 58%. This study contributes to further exploration on the biological activities of quinoa saponin.

Novelty impact statement

  1. A macroporous resin suitable for separating quinoa saponins was screened.
  2. The adsorption isotherms and kinetics of quinoa saponins on HPD600 were studied.
  3. The in vitro biological activities of quinoa saponins were studied.

CONFLICT OF INTEREST

The authors have declared no conflicts of interest for this article.

DATA AVAILABILITY STATEMENT

Author elects to not share data.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.