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Zheng LJ, Chen WX, Zheng SH, Ullah I, Zheng HD, Fan LH, Guo Q. Biosynthesis of nonnutritive monosaccharide d-allulose by metabolically engineered Escherichia coli from nutritive disaccharide sucrose. Biotechnol Bioeng 2024. [PMID: 39258327 DOI: 10.1002/bit.28842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 08/30/2024] [Accepted: 09/03/2024] [Indexed: 09/12/2024]
Abstract
Sucrose is a commonly utilized nutritive sweetener in food and beverages due to its abundance in nature and low production costs. However, excessive intake of sucrose increases the risk of metabolic disorders, including diabetes and obesity. Therefore, there is a growing demand for the development of nonnutritive sweeteners with almost no calories. d-Allulose is an ultra-low-calorie, rare six-carbon monosaccharide with high sweetness, making it an ideal alternative to sucrose. In this study, we developed a cell factory for d-allulose production from sucrose using Escherichia coli JM109 (DE3) as a chassis host. The genes cscA, cscB, cscK, alsE, and a6PP were co-expressed for the construction of the synthesis pathway. Then, the introduction of ptsG-F and knockout of ptsG, fruA, ptsI, and ptsH to reprogram sugar transport pathways resulted in an improvement in substrate utilization. Next, the carbon fluxes of the Embden-Meyerhof-Parnas and the pentose phosphate pathways were regulated by the inactivation of pfkA and zwf, achieving an increase in d-allulose titer and yield of 154.2% and 161.1%, respectively. Finally, scaled-up fermentation was performed in a 5 L fermenter. The titer of d-allulose reached 11.15 g/L, with a yield of 0.208 g/g on sucrose.
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Affiliation(s)
- Ling-Jie Zheng
- College of Chemical Engineering, Fujian Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals, Fuzhou University, Fuzhou, People's Republic of China
- Qingyuan Innovation Laboratory, Quanzhou, People's Republic of China
| | - Wei-Xiang Chen
- College of Chemical Engineering, Fujian Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals, Fuzhou University, Fuzhou, People's Republic of China
| | - Shang-He Zheng
- College of Chemical Engineering, Fujian Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals, Fuzhou University, Fuzhou, People's Republic of China
| | - Irfan Ullah
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, People's Republic of China
| | - Hui-Dong Zheng
- College of Chemical Engineering, Fujian Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals, Fuzhou University, Fuzhou, People's Republic of China
- Qingyuan Innovation Laboratory, Quanzhou, People's Republic of China
| | - Li-Hai Fan
- College of Chemical Engineering, Fujian Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals, Fuzhou University, Fuzhou, People's Republic of China
- Qingyuan Innovation Laboratory, Quanzhou, People's Republic of China
| | - Qiang Guo
- College of Chemical Engineering, Fujian Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals, Fuzhou University, Fuzhou, People's Republic of China
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Niu H, Zhao F, Ji W, Ma L, Lu B, Yuan Y, Yue T. Structural, physicochemical properties and noodle-making potential of quinoa starch and type 3, type 4, and type 5 quinoa resistant starch. Int J Biol Macromol 2024; 258:128772. [PMID: 38103670 DOI: 10.1016/j.ijbiomac.2023.128772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/30/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
This study prepared type 3, type 4, and type 5 quinoa resistant starch (QRS3, QRS4, and QRS5) from quinoa starch (QS), compared their structural and physicochemical properties and evaluated their noodle-making potential. The results showed that the molecular weight of QRS3 decreased, the number of short-chain molecules increased, and its crystal type changed to B-type after gelatinization, enzymatic hydrolysis, and retrogradation. QRS4 is a phosphorylated cross-linked starch, with a surface morphology, particle size range, and crystal type similar to QS, but displaying modified thermodynamic properties. QRS5 is a complex of amylose and palmitic acid. It displays typical V-type crystals, mainly composed of long chain molecules and primarily exhibits a block morphology. The noodles prepared by replacing 20 % wheat flour with QS, QRS3 and QRS5 have higher hardness and are suitable for people who like elasticity and chewiness. QRS4 noodles are softer and suitable for people like elderly and infants who prefer soft foods. In conclusion, significant differences were evident between the fine structures, crystal types, physicochemical properties and potential applications of QS and the three QRSs. The results may expand the application of QS and QRS in the food and pharmaceutical industries.
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Affiliation(s)
- Haili Niu
- College of Food Science and Technology, Northwest University, Xi'an 710069, China; Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering, Shaanxi, Xi'an 710069, China; Research Center of Food Safety Risk Assessment and Control, Shaanxi, Xi'an 710069, China; Innovative Transformation Platform of Food Safety and Nutritional Health, Shaanxi, Xi'an 710069, China
| | - Fangjia Zhao
- College of Food Science and Technology, Northwest University, Xi'an 710069, China; Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering, Shaanxi, Xi'an 710069, China; Research Center of Food Safety Risk Assessment and Control, Shaanxi, Xi'an 710069, China; Innovative Transformation Platform of Food Safety and Nutritional Health, Shaanxi, Xi'an 710069, China
| | - Wenxin Ji
- College of Food Science and Technology, Northwest University, Xi'an 710069, China; Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering, Shaanxi, Xi'an 710069, China; Research Center of Food Safety Risk Assessment and Control, Shaanxi, Xi'an 710069, China; Innovative Transformation Platform of Food Safety and Nutritional Health, Shaanxi, Xi'an 710069, China
| | - Langtian Ma
- College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Bozhi Lu
- College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Yahong Yuan
- College of Food Science and Technology, Northwest University, Xi'an 710069, China; Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering, Shaanxi, Xi'an 710069, China; Research Center of Food Safety Risk Assessment and Control, Shaanxi, Xi'an 710069, China; Innovative Transformation Platform of Food Safety and Nutritional Health, Shaanxi, Xi'an 710069, China
| | - Tianli Yue
- College of Food Science and Technology, Northwest University, Xi'an 710069, China; Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering, Shaanxi, Xi'an 710069, China; Research Center of Food Safety Risk Assessment and Control, Shaanxi, Xi'an 710069, China; Innovative Transformation Platform of Food Safety and Nutritional Health, Shaanxi, Xi'an 710069, China.
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