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Yu C, Hu X, Ahmadi S, Wu D, Xiao H, Zhang H, Ding T, Liu D, Ye X, Chen S, Chen J. Structure and In Vitro Fermentation Characteristics of Polysaccharides Sequentially Extracted from Goji Berry ( Lycium barbarum) Leaves. J Agric Food Chem 2022; 70:7535-7546. [PMID: 35549264 DOI: 10.1021/acs.jafc.2c01157] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Herein, the chelating agent-soluble fraction (CA), sodium carbonate-soluble fraction (SC), and sodium hydroxide-soluble fraction (SH) were sequentially extracted from the cell wall of goji berry (Lycium barbarum) leaves. Furthermore, SC was purified with Q-Sepharose fast flow resin to obtain the neutral sugar fraction (SC-I) and acid sugar fraction (SC-II). Physicochemical properties of polysaccharides were characterized by high-performance anion-exchange chromatography with pulsed amperometry detection, size exclusion chromatography-multi-angle laser light scattering, Fourier transform infrared spectroscopy, nuclear magnetic resonance, and atomic force microscopy analysis. Additionally, the impact of polysaccharides on modulating human gut microbiota was investigated by in vitro fermentation. A high amount of galacturonic acid (GalA) in CA showed that it was an aggregation of linear homogalacturonan. SC was the main pectic polysaccharide fraction and rich in neutral sugars. SC-I was the neutral sugar fraction with an extremely high molecular weight (2.055 × 106 Da), while SC-II was the acid sugar fraction with a low molecular weight (1.766 × 105 Da). SH seemed like a mixture of pectin and hemicellulose. All the five polysaccharides significantly (P < 0.05) increased the abundance of Bacteroides, Bifidobacteria, and Lactobacilli. To the best of our knowledge, this is the first report on the structure and fermentation characteristics of goji berry leaf polysaccharides, which is meaningful to provide a structural basis for further bioactivity research.
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Affiliation(s)
- Chengxiao Yu
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Xinxin Hu
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Shokouh Ahmadi
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Dongmei Wu
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Hang Xiao
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Huiling Zhang
- Ningxia Key Laboratory for Food Microbial-Applications Technology and Safety Control, Ningxia University, Yinchuan 750021, China
| | - Tian Ding
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Zhejiang University Zhongyuan Institute, Zhengzhou 450007, China
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi 276000, China
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Zhejiang University Zhongyuan Institute, Zhengzhou 450007, China
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi 276000, China
| | - Jianle Chen
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro Food Processing, Fuli Institute of Food Science, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Zhejiang University Zhongyuan Institute, Zhengzhou 450007, China
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi 276000, China
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