1
|
Mao BD, Vadiveloo A, Qiu J, Gao F. Artificial photosynthesis: Promising approach for the efficient production of high-value bioproducts by microalgae. BIORESOURCE TECHNOLOGY 2024; 401:130718. [PMID: 38641303 DOI: 10.1016/j.biortech.2024.130718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/11/2024] [Accepted: 04/17/2024] [Indexed: 04/21/2024]
Abstract
Recently, microalgae had received extensive attention for carbon capture and utilization. But its overall efficiency still could not reach a satisfactory degree. Artificial photosynthesis showed better efficiency in the conversion of carbon dioxide. However, artificial photosynthesis could generally only produce C1-C3 organic matters at present. Some studies showed that heterotrophic microalgae can efficiently synthesize high value organic matters by using simple organic matter such as acetate. Therefore, the combination of artificial photosynthesis with heterotrophic microalgae culture showed great potential for efficient carbon capture and high-value organic matter production. This article systematically analyzed the characteristics and challenges of carbon dioxide conversion by microalgae and artificial photosynthesis. On this basis, the coupling mode and development trend of artificial photosynthesis combined with microalgae culture were discussed. In summary, the combination of artificial photosynthesis and microalgae culture has great potential in the field of carbon capture and utilization, and deserves further study.
Collapse
Affiliation(s)
- Bin-Di Mao
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316000, China
| | - Ashiwin Vadiveloo
- Centre for Water, Energy and Waste, Harry Butler Institute, Murdoch University, Perth 6150, Australia
| | - Jian Qiu
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316000, China
| | - Feng Gao
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316000, China.
| |
Collapse
|
2
|
Zhang Y, Cui X, Lin S, Lu T, Li H, Lu Y, Cao M, Lin X, Ling X. Knockout of a PLD gene in Schizochytrium limacinum SR21 enhances docosahexaenoic acid accumulation by modulation of the phospholipid profile. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2024; 17:16. [PMID: 38291531 PMCID: PMC10826259 DOI: 10.1186/s13068-024-02465-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/18/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND The hydrolysis and transphosphatidylation of phospholipase D (PLD) play important roles in the interconversion of phospholipids (PLs), which has been shown to profoundly impact lipid metabolism in plants. In this study, the effect of the PLD1 gene of Schizochytrium limacinum SR21 (S. limacinum SR21) on lipid metabolism was investigated. RESULTS PLD1 knockout had little impact on cell growth and lipid production, but it significantly improved the percentage of polyunsaturated fatty acids in lipids, of which docosahexaenoic acid (DHA) content increased by 13.3% compared to the wild-type strain. Phospholipomics and real-time quantitative PCR analysis revealed the knockout of PLD1 reduced the interexchange and increased de novo synthesis of PLs, which altered the composition of PLs, accompanied by a final decrease in phosphatidylcholine (PC) and an increase in phosphatidylinositol, lysophosphatidylcholine, and phosphatidic acid levels. PLD1 knockout also increased DHA content in triglycerides (TAGs) and decreased it in PLs. CONCLUSIONS These results indicate that PLD1 mainly performs the transphosphatidylation activity in S. limacinum SR21, and its knockout promotes the migration of DHA from PLs to TAGs, which is conducive to DHA accumulation and storage in TAGs via an acyl CoA-independent pathway. This study provides a novel approach for identifying the mechanism of DHA accumulation and metabolic regulation strategies for DHA production in S. limacinum SR21.
Collapse
Affiliation(s)
- Yiting Zhang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
| | - Xiaowen Cui
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
| | - Shuizhi Lin
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
| | - Tao Lu
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
| | - Hao Li
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
| | - Yinghua Lu
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
- Xiamen Key Laboratory of Synthetic Biotechnology, Xiamen University, Xiamen, People's Republic of China
- The Key Laboratory for Chemical Biology of Fujian Province (Xiamen University), Xiamen, People's Republic of China
| | - Mingfeng Cao
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
- Xiamen Key Laboratory of Synthetic Biotechnology, Xiamen University, Xiamen, People's Republic of China
| | - Xihuang Lin
- Analysis and Test Center, Ministry of Natural Resources, Third Institute of Oceanography, Xiamen, 361005, People's Republic of China.
| | - Xueping Ling
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China.
- Xiamen Key Laboratory of Synthetic Biotechnology, Xiamen University, Xiamen, People's Republic of China.
| |
Collapse
|
3
|
Ding J, Fu Z, Zhu Y, He J, Ma L, Bu D. Enhancing docosahexaenoic acid production of Schizochytrium sp. by optimizing fermentation using central composite design. BMC Biotechnol 2022; 22:39. [PMID: 36494804 PMCID: PMC9737722 DOI: 10.1186/s12896-022-00769-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
Docosahexaenoic acid (DHA) can improve human and animal health, particularly including anti-inflammatory, antioxidant, anticancer, neurological, and visual functions. Schizochytrium sp. is a marine heterotrophic protist producing oil with high DHA content, which is widely used in animal and food production. However, different fermentation conditions have intensive impacts on the growth and DHA content of Schizochytrium sp. Thus, this study aimed to enhance the DHA yield and concentration of Schizochytrium sp. I-F-9 by optimizing the fermentation medium. First, a single-factor design was conducted to select a target carbon and nitrogen source from several generic sources (glucose, sucrose, glycerol, maltose, corn syrup, yeast extract, urea, peptone, and ammonium sulfate). The Plackett-Burman design and the central composite design (CCD) were utilized to optimize the fermentation mediums. Schizochytrium sp. in 50-mL fermentation broth was cultured in a 250 mL shake flask at 28 °C and 200 rpm for 120 h before collecting the cell pellet. Subsequently, the cell walls were destroyed with hydrochloric acid to extract the fatty acid using n-hexane. The DHA content was detected by gas chromatography. The single-factor test indicated that glucose and peptone, respectively, significantly improved the DHA content of Schizochytrium sp. compared to the other carbon and nitrogen sources. Glucose, sodium glutamate, and sea crystal were the key factors affecting DHA production in the Plackett-Burman test (P = 0.0247). The CCD result showed that DHA production was elevated by 34.73% compared with the initial yield (from 6.18 ± 0.063 to 8.33 ± 0.052 g/L). Therefore, the results of this study demonstrated an efficient strategy to increase the yield and content of DHA of Schizochytrium sp.
Collapse
Affiliation(s)
- Jun Ding
- grid.410727.70000 0001 0526 1937State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Beijing, 100193 China
| | - Zilin Fu
- grid.410727.70000 0001 0526 1937State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Beijing, 100193 China
| | - Yingkun Zhu
- grid.410727.70000 0001 0526 1937State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Beijing, 100193 China
| | - Junhao He
- grid.410727.70000 0001 0526 1937State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Beijing, 100193 China
| | - Lu Ma
- grid.410727.70000 0001 0526 1937State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Beijing, 100193 China
| | - Dengpan Bu
- grid.410727.70000 0001 0526 1937State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Beijing, 100193 China
| |
Collapse
|
4
|
Chen L, Liu X, Li C, Li H, Chen W, Li D. Transcriptome analyses reveal the DHA enhancement mechanism in Schizochytrium limacinum LD11 mutant. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
5
|
Chen C, Tang T, Shi Q, Zhou Z, Fan J. The potential and challenge of microalgae as promising future food sources. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.06.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
6
|
Yu F, Zhang M, Sun J, Wang F, Li X, Liu Y, Wang Z, Zhao X, Li J, Chen J, Du G, Xue Z. Improved Neomycin Sulfate Potency in Streptomyces fradiae Using Atmospheric and Room Temperature Plasma (ARTP) Mutagenesis and Fermentation Medium Optimization. Microorganisms 2022; 10:microorganisms10010094. [PMID: 35056543 PMCID: PMC8780280 DOI: 10.3390/microorganisms10010094] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 12/29/2021] [Accepted: 12/31/2021] [Indexed: 12/04/2022] Open
Abstract
To improve the screening efficiency of high-yield neomycin sulfate (NM) Streptomyces fradiae strains after mutagenesis, a high-throughput screening method using streptomycin resistance prescreening (8 μg/mL) and a 24-deep well plates/microplate reader (trypan blue spectrophotometry) rescreening strategy was developed. Using this approach, we identified a high-producing NM mutant strain, Sf6-2, via six rounds of atmospheric and room temperature plasma (ARTP) mutagenesis and screening. The mutant displayed a NM potency of 7780 ± 110 U/mL and remarkably stable genetic properties over six generations. Furthermore, the key components (soluble starch, peptone, and (NH4)2SO4) affecting NM potency in fermentation medium were selected using Plackett-Burman and optimized by Box-Behnken designs. Finally, the NM potency of Sf6-2 was increased to 10,849 ± 141 U/mL at the optimal concentration of each factor (73.98 g/L, 9.23 g/L, and 5.99 g/L, respectively), and it exhibited about a 40% and 100% enhancement when compared with before optimization conditions and the wild-type strain, respectively. In this study, we provide a new S. fradiae NM production strategy and generate valuable insights for the breeding and screening of other microorganisms.
Collapse
Affiliation(s)
- Fei Yu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Min Zhang
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Junfeng Sun
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Fang Wang
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Xiangfei Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
| | - Yan Liu
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Zhou Wang
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Xinrui Zhao
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Jianghua Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Jian Chen
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Guocheng Du
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
- Correspondence: (G.D.); (Z.X.)
| | - Zhenglian Xue
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
- Correspondence: (G.D.); (Z.X.)
| |
Collapse
|
7
|
Chi G, Xu Y, Cao X, Li Z, Cao M, Chisti Y, He N. Production of polyunsaturated fatty acids by Schizochytrium (Aurantiochytrium) spp. Biotechnol Adv 2021; 55:107897. [PMID: 34974158 DOI: 10.1016/j.biotechadv.2021.107897] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/05/2021] [Accepted: 12/20/2021] [Indexed: 12/28/2022]
Abstract
Diverse health benefits are associated with dietary consumption of omega-3 long-chain polyunsaturated fatty acids (ω-3 LC-PUFA), particularly docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). Traditionally, these fatty acids have been obtained from fish oil, but limited supply, variably quality, and an inability to sustainably increase production for a rapidly growing market, are driving the quest for alternative sources. DHA derived from certain marine protists (heterotrophic thraustochytrids) already has an established history of commercial production for high-value dietary use, but is too expensive for use in aquaculture feeds, a much larger potential market for ω-3 LC-PUFA. Sustainable expansion of aquaculture is prevented by its current dependence on wild-caught fish oil as the source of ω-3 LC-PUFA nutrients required in the diet of aquacultured animals. Although several thraustochytrids have been shown to produce DHA and EPA, there is a particular interest in Schizochytrium spp. (now Aurantiochytrium spp.), as some of the better producers. The need for larger scale production has resulted in development of many strategies for improving productivity and production economics of ω-3 PUFA in Schizochytrium spp. Developments in fermentation technology and metabolic engineering for enhancing LC-PUFA production in Schizochytrium spp. are reviewed.
Collapse
Affiliation(s)
- Guoxiang Chi
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; The Key Laboratory for Synthetic Biotechnology of Xiamen City, Xiamen University, Xiamen 361005, China
| | - Yiyuan Xu
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; The Key Laboratory for Synthetic Biotechnology of Xiamen City, Xiamen University, Xiamen 361005, China
| | - Xingyu Cao
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; The Key Laboratory for Synthetic Biotechnology of Xiamen City, Xiamen University, Xiamen 361005, China
| | - Zhipeng Li
- College of Food and Biological Engineering, Jimei University, Xiamen 361000, China
| | - Mingfeng Cao
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; The Key Laboratory for Synthetic Biotechnology of Xiamen City, Xiamen University, Xiamen 361005, China.
| | - Yusuf Chisti
- School of Engineering, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
| | - Ning He
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; The Key Laboratory for Synthetic Biotechnology of Xiamen City, Xiamen University, Xiamen 361005, China.
| |
Collapse
|
8
|
Wang Q, Han W, Jin W, Gao S, Zhou X. Docosahexaenoic acid production by Schizochytrium sp.: review and prospect. FOOD BIOTECHNOL 2021. [DOI: 10.1080/08905436.2021.1908900] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Qing Wang
- Shenzhen Engineering Laboratory of Microalgae Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen, China
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| | - Wei Han
- Shenzhen Engineering Laboratory of Microalgae Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen, China
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| | - Wenbiao Jin
- Shenzhen Engineering Laboratory of Microalgae Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen, China
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| | - Shuhong Gao
- Shenzhen Engineering Laboratory of Microalgae Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen, China
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| | - Xu Zhou
- Shenzhen Engineering Laboratory of Microalgae Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen, China
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| |
Collapse
|
9
|
Novel mutagenesis and screening technologies for food microorganisms: advances and prospects. Appl Microbiol Biotechnol 2020; 104:1517-1531. [DOI: 10.1007/s00253-019-10341-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/19/2019] [Accepted: 12/28/2019] [Indexed: 12/19/2022]
|
10
|
Guo X, Zhang M, Gao Y, Li W, Lu D. “Saddle-shaped” dose-survival effect, is it a general and valuable phenomenon in microbes in response to heavy ion beam irradiation? ANN MICROBIOL 2019. [DOI: 10.1007/s13213-019-1442-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
11
|
Enhancement of Schizochytrium DHA synthesis by plasma mutagenesis aided with malonic acid and zeocin screening. Appl Microbiol Biotechnol 2018; 102:2351-2361. [DOI: 10.1007/s00253-018-8756-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 12/28/2017] [Accepted: 12/30/2017] [Indexed: 12/28/2022]
|
12
|
Sun XM, Ren LJ, Bi ZQ, Ji XJ, Zhao QY, Jiang L, Huang H. Development of a cooperative two-factor adaptive-evolution method to enhance lipid production and prevent lipid peroxidation in Schizochytrium sp. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:65. [PMID: 29563968 PMCID: PMC5851066 DOI: 10.1186/s13068-018-1065-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 03/02/2018] [Indexed: 05/06/2023]
Abstract
BACKGROUND Schizochytrium sp. is a marine microalga with great potential as a promising sustainable source of lipids rich in docosahexaenoic acid (DHA). This organism's lipid accumulation machinery can be induced by various stress conditions, but this stress induction usually comes at the expense of lower biomass in industrial fermentations. Moreover, oxidative damage induced by various environmental stresses can result in the peroxidation of lipids, and especially polyunsaturated fatty acids, which causes unstable DHA production, but is often ignored in fermentation processes. Therefore, it is urgent to develop new production strains that not only have a high DHA production capacity, but also possess strong antioxidant defenses. RESULTS Adaptive laboratory evolution (ALE) is an effective method for the development of beneficial phenotypes in industrial microorganisms. Here, a novel cooperative two-factor ALE strategy based on concomitant low temperature and high salinity was applied to improve the production capacity of Schizochytrium sp. Low-temperature conditions were used to improve the DHA content, and high salinity was applied to stimulate lipid accumulation and enhance the antioxidative defense systems of Schizochytrium sp. After 30 adaptation cycles, a maximal cell dry weight of 126.4 g/L and DHA yield of 38.12 g/L were obtained in the endpoint strain ALE-TF30, which was 27.42 and 57.52% higher than parental strain, respectively. Moreover, the fact that ALE-TF30 had the lowest concentrations of reactive oxygen species and malondialdehyde among all strains indicated that lipid peroxidation was greatly suppressed by the evolutionary process. Accordingly, the ALE-TF30 strain exhibited an overall increase of gene expression levels of antioxidant enzymes and polyketide synthases compared to the parental strain. CONCLUSION This study provides important clues on how to overcome the negative effects of lipid peroxidation on DHA production in Schizochytrium sp. Taken together, the cooperative two-factor ALE process can not only increase the accumulation of lipids rich in DHA, but also prevent the loss of produced lipid caused by lipid peroxidation. The strategy proposed here may provide a new and alternative direction for the industrial cultivation of oil-producing microalgae.
Collapse
Affiliation(s)
- Xiao-Man Sun
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
| | - Lu-Jing Ren
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
| | - Zhi-Qian Bi
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
| | - Xiao-Jun Ji
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
| | - Quan-Yu Zhao
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
| | - Ling Jiang
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
| | - He Huang
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
| |
Collapse
|
13
|
Li D, Zhang K, Chen L, Ding M, Zhao M, Chen S. Selection of Schizochytrium limacinum mutants based on butanol tolerance. ELECTRON J BIOTECHN 2017. [DOI: 10.1016/j.ejbt.2017.08.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
|
14
|
Fossier Marchan L, Lee Chang KJ, Nichols PD, Mitchell WJ, Polglase JL, Gutierrez T. Taxonomy, ecology and biotechnological applications of thraustochytrids: A review. Biotechnol Adv 2017; 36:26-46. [PMID: 28911809 DOI: 10.1016/j.biotechadv.2017.09.003] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 08/19/2017] [Accepted: 09/06/2017] [Indexed: 12/24/2022]
Abstract
Thraustochytrids were first discovered in 1934, and since the 1960's they have been increasingly studied for their beneficial and deleterious effects. This review aims to provide an enhanced understanding of these protists with a particular emphasis on their taxonomy, ecology and biotechnology applications. Over the years, thraustochytrid taxonomy has improved with the development of modern molecular techniques and new biochemical markers, resulting in the isolation and description of new strains. In the present work, the taxonomic history of thraustochytrids is reviewed, while providing an up-to-date classification of these organisms. It also describes the various biomarkers that may be taken into consideration to support taxonomic characterization of the thraustochytrids, together with a review of traditional and modern techniques for their isolation and molecular identification. The originality of this review lies in linking taxonomy and ecology of the thraustochytrids and their biotechnological applications as producers of docosahexaenoic acid (DHA), carotenoids, exopolysaccharides and other compounds of interest. The paper provides a summary of these aspects while also highlighting some of the most important recent studies in this field, which include the diversity of polyunsaturated fatty acid metabolism in thraustochytrids, some novel strategies for biomass production and recovery of compounds of interest. Furthermore, a detailed overview is provided of the direct and current applications of thraustochytrid-derived compounds in the food, fuel, cosmetic, pharmaceutical, and aquaculture industries and of some of the commercial products available. This review is intended to be a source of information and references on the thraustochytrids for both experts and those who are new to this field.
Collapse
Affiliation(s)
- Loris Fossier Marchan
- Institute of Mechanical, Process & Energy Engineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Kim J Lee Chang
- CSIRO Oceans and Atmosphere, GPO Box 1538, Hobart, TAS, 7001, Australia.
| | - Peter D Nichols
- CSIRO Oceans and Atmosphere, GPO Box 1538, Hobart, TAS, 7001, Australia.
| | - Wilfrid J Mitchell
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Jane L Polglase
- Jane L Polglase Institute of Life and Earth Sciences, School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Tony Gutierrez
- Institute of Mechanical, Process & Energy Engineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK.
| |
Collapse
|
15
|
Song X, Ma Z, Tan Y, Zhang H, Cui Q. Wastewater recycling technology for fermentation in polyunsaturated fatty acid production. BIORESOURCE TECHNOLOGY 2017; 235:79-86. [PMID: 28365352 DOI: 10.1016/j.biortech.2017.03.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 02/28/2017] [Accepted: 03/05/2017] [Indexed: 06/07/2023]
Abstract
To reduce fermentation-associated wastewater discharge and the cost of wastewater treatment, which further reduces the total cost of DHA and ARA production, this study first analyzed the composition of wastewater from Aurantiochytrium (DHA) and Mortierella alpina (ARA) fermentation, after which wastewater recycling technology for these fermentation processes was developed. No negative effects of DHA and ARA production were observed when the two fermentation wastewater methods were cross-recycled. DHA and ARA yields were significantly inhibited when the wastewater from the fermentation process was directly reused. In 5-L fed-batch fermentation experiments, using this cross-recycle technology, the DHA and ARA yields were 30.4 and 5.13gL-1, respectively, with no significant changes (P>0.05) compared to the control group, and the water consumption was reduced by half compared to the traditional process. Therefore, this technology has great potential in industrial fermentation for polyunsaturated fatty acid production.
Collapse
Affiliation(s)
- Xiaojin Song
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China; Qingdao Engineering Laboratory of Single Cell Oil, Qingdao 266101, Shandong, China
| | - Zengxin Ma
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China; Qingdao Engineering Laboratory of Single Cell Oil, Qingdao 266101, Shandong, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanzhen Tan
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China
| | - Huidan Zhang
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China; Qingdao Engineering Laboratory of Single Cell Oil, Qingdao 266101, Shandong, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiu Cui
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China; Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China; Qingdao Engineering Laboratory of Single Cell Oil, Qingdao 266101, Shandong, China.
| |
Collapse
|
16
|
Zhao B, Li Y, Mbifile MD, Li C, Yang H, Wang W. Improvement of docosahexaenoic acid fermentation from Schizochytrium sp. AB-610 by staged pH control based on cell morphological changes. Eng Life Sci 2017; 17:981-988. [PMID: 32624848 DOI: 10.1002/elsc.201600249] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 03/09/2017] [Accepted: 03/17/2017] [Indexed: 11/11/2022] Open
Abstract
Schizochytrium sp. AB-610 accumulates relatively higher amount of DHA-rich lipid in the cells, and it was found that DHA yield was closely related to the cell morphology and pH value during fermentation period. DHA production from Schizochytrium sp. AB-610 in fed-batch fermentation was investigated and four growth stages were clarified as lag stage, balanced growth stage, lipid accumulation stage, and lipid turnover stage, based on the morphologic observation and key parameters changes. Then a simple strategy of two-stage pH control was developed, in which pH 7.0 was kept until 12 h after the end of balanced growth stage, and then shifted to 5.0 for the rest period in fermentation. A maximal DHA production of 11.44g/L was achieved. This approach has advantage of easy scaling up for industrial DHA fermentation from Schizochytrium sp. cells.
Collapse
Affiliation(s)
- Ben Zhao
- The Key Laboratory of Industrial Biotechnology Ministry of Education Jiangnan University Wuxi China
| | - Yafei Li
- The Key Laboratory of Industrial Biotechnology Ministry of Education Jiangnan University Wuxi China
| | - Martha Daniel Mbifile
- The Key Laboratory of Industrial Biotechnology Ministry of Education Jiangnan University Wuxi China
| | - Changling Li
- College of Biological and Food Engineering Huaihua University Huaihua China
| | - Hailin Yang
- The Key Laboratory of Industrial Biotechnology Ministry of Education Jiangnan University Wuxi China
| | - Wu Wang
- The Key Laboratory of Industrial Biotechnology Ministry of Education Jiangnan University Wuxi China
| |
Collapse
|