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Li F, Hu X, Sun X, Li H, Lu J, Li Y, Bao M. Effect of fermentation pH on the structure, rheological properties, and antioxidant activities of exopolysaccharides produced by Alteromonas australica QD. Glycoconj J 2022; 39:773-787. [PMID: 36367683 DOI: 10.1007/s10719-022-10087-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 09/01/2022] [Accepted: 10/11/2022] [Indexed: 11/13/2022]
Abstract
The pH value was essential for the growth and metabolism of microorganisms. Acidic pH exopolysaccharide (AC-EPS) and alkaline pH exopolysaccharide (AL-EPS) secreted by A. australica QD mediated by pH were studied in this paper. The total carbohydrate content and molecular weight of AC-EPS (79.59% ± 2.24% (w/w), 8.374 × 105 Da) and AL-EPS (82.48% ± 1.46% (w/w), 6.182 × 105 Da) were estimated and compared. In AC-EPS, mannose (3.78%) and galactose (3.24%) content was more, while the proportion of glucuronic acid was less in comparison to AL-EPS. The scanning electron microscopy revealed the structural differences among the AC-EPS and AL-EPS. Thermogravimetric analysis showed degradation temperatures of 272.8 °C and 244.9 °C for AC-EPS and AL-EPS, respectively. AC-EPS was found to exhibit better rheological properties and emulsifying capabilities, while AL-EPS had superior antioxidant activities. Overall, both AC-EPS and AL-EPS have the potential to be used as emulsifiers and biological antioxidants.
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Affiliation(s)
- Fengshu Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.,College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Xin Hu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.,College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Xiaojun Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.,College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Haoshuai Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.,College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Jinren Lu
- College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Yiming Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.,College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Mutai Bao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China. .,College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China.
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Soundararajan D, Natarajan L, Trilokesh C, Harish B, Ameen F, Amirul Islam M, Uppuluri KB, Anbazhagan V. Isolation of exopolysaccharide, galactan from marine Vibrio sp. BPM 19 to template the synthesis of antimicrobial platinum nanocomposite. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Qian S, Yu Y, Ma J, Diao E, Ye S, Gao J, Liu Y, Hu W. Evaluation of a novel phosphorylated corn straw xylan for enhancement of thermal stability, crystallinity and functional activity. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shiquan Qian
- Jiangsu Key Laboratory for Eco‐Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation Huaiyin Normal University Huaian 223300 China
| | - Yuting Yu
- Jiangsu Key Laboratory for Eco‐Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation Huaiyin Normal University Huaian 223300 China
| | - Jing Ma
- School of Life Sciences Anhui Agricultural University Hefei 230036 China
| | - Enjie Diao
- Jiangsu Key Laboratory for Eco‐Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation Huaiyin Normal University Huaian 223300 China
| | - Shijia Ye
- Jiangsu Key Laboratory for Eco‐Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation Huaiyin Normal University Huaian 223300 China
| | - Jiamin Gao
- Jiangsu Key Laboratory for Eco‐Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation Huaiyin Normal University Huaian 223300 China
| | - Ying Liu
- Jiangsu Key Laboratory for Eco‐Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation Huaiyin Normal University Huaian 223300 China
| | - Weicheng Hu
- Jiangsu Key Laboratory for Eco‐Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation Huaiyin Normal University Huaian 223300 China
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