A new pilot-scale fermentation mode enhances Euglena gracilis biomass and paramylon (β-1,3-glucan) production

Wu Mingcan; Qin Huan; Deng Jiuqi; Liu Yongqi; Lei Anping; Zhu Hui; Hu Zhangli; Wang Jiangxin

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A new pilot-scale fermentation mode enhances Euglena gracilis biomass and paramylon (β-1,3-glucan) production

机译：一种新的试验规模发酵模式增强了Euglena Gracilis生物量和Paramenton（β-1,3-葡聚糖）生产

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Paramylon (beta-1,3-glucan) extracted from the microalga Euglena gracilis has a range of applications. However, the industrial production of E. gracilis biomass and paramylon is limited by bench-scale conditions. This study utilized a new pilot-scale fermentation mode by combining mixotrophic (MT) and heterotrophic (HT) conditions to evaluate the changes in E. gracilis biomass and paramylon production. This new mode revealed that cell viability was enhanced under MT conditions and paramylon had accumulated under HT conditions. Maximal biomass and paramylon contents were 86.2 g/L and 78.2%, respectively. Metabolomics analysis revealed that the citrate cycle, related amino acids, and the glycerophospholipid biosynthetic pathway were upregulated under MT conditions, while the carbon skeleton entered the paramylon synthesis pathway under HT conditions. These findings present a valuable theoretical basis for the industrial production of E. gracilis and other microalgae.

机译：从Microalga Euglena Gracilis中提取的Paramylon（β-1,3-葡聚糖）具有一系列应用。然而，E. Gracilis BioMass和Paramenton的工业生产受到长凳级条件的限制。该研究通过组合混合营养（MT）和异养（HT）条件来评估E. Gracilis生物量和Paramennon生产的变化，利用了新的试验型发酵模式。这种新模式显示在MT条件下提高了细胞活力，并且Paramylon在HT条件下积累。最大生物质和Paramylon含量分别为86.2克/升和78.2％。代谢组科分析显示，在MT条件下升高柠檬酸盐循环，相关氨基酸和甘油磷脂生物合成途径，而碳骨架在HT条件下进入Paramennon合成途径。这些发现为E. Gracilis和其他微藻产业生产提供了有价值的理论基础。

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《Journal of Cleaner Production》 |2021年第25期|128996.1-128996.9|共9页
作者
Wu Mingcan; Qin Huan; Deng Jiuqi; Liu Yongqi; Lei Anping; Zhu Hui; Hu Zhangli; Wang Jiangxin;
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作者单位

Hainan Univ Coll Oceanol State Key Lab Marine Resource Utilizat Southen Ch Haikou 570228 Hainan Peoples R China;

Shenzhen Univ Longhua Innovat Inst Biotechnol Shenzhen Engn Lab Coll Life Sci & Oceanog Guangdong Prov Key Lab Pl Shenzhen Key Lab Marine Bioresource & Eco Environ Shenzhen 518060 Peoples R China;

Shenzhen Univ Longhua Innovat Inst Biotechnol Shenzhen Engn Lab Coll Life Sci & Oceanog Guangdong Prov Key Lab Pl Shenzhen Key Lab Marine Bioresource & Eco Environ Shenzhen 518060 Peoples R China;

Shenzhen Univ Longhua Innovat Inst Biotechnol Shenzhen Engn Lab Coll Life Sci & Oceanog Guangdong Prov Key Lab Pl Shenzhen Key Lab Marine Bioresource & Eco Environ Shenzhen 518060 Peoples R China;

Shenzhen Univ Longhua Innovat Inst Biotechnol Shenzhen Engn Lab Coll Life Sci & Oceanog Guangdong Prov Key Lab Pl Shenzhen Key Lab Marine Bioresource & Eco Environ Shenzhen 518060 Peoples R China;

Hanshan Normal Univ Sch Life Sci & Food Engn Chaozhou 521041 Peoples R China;

Shenzhen Univ Longhua Innovat Inst Biotechnol Shenzhen Engn Lab Coll Life Sci & Oceanog Guangdong Prov Key Lab Pl Shenzhen Key Lab Marine Bioresource & Eco Environ Shenzhen 518060 Peoples R China|Shenzhen Univ Coll Optoelect Engn Key Lab Optoelect Devices & Syst Minist Educ & Guangdong Prov Shenzhen 518060 Peoples R China;

Shenzhen Univ Longhua Innovat Inst Biotechnol Shenzhen Engn Lab Coll Life Sci & Oceanog Guangdong Prov Key Lab Pl Shenzhen Key Lab Marine Bioresource & Eco Environ Shenzhen 518060 Peoples R China;

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正文语种 eng
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Microalgae; Euglena gracilis; Pilot-scale fermentation; beta-1,3-Glucan; Paramylon;

机译：微藻;Euglena Gracilis;试验规模发酵;Beta-1,3-unlucan;Paramylon;

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专利

1. Production of paramylon, a beta-1,3-glucan, by heterotrophic growth of Euglena gracilis on potato liquor in fed-batch and repeated-batch mode of cultivation [J] . Bozidar Santek, Karl Friehs, Martin Lotz, Engineering in Life Sciences . 2012,第1期

机译：以分批补料和分批培养的方式在马铃薯白酒上进行细叶藻的异养生长，生产β-1,3-葡聚糖的副mylon
2. Production of paramylon, a beta-1,3-glucan, by heterotrophic cultivation of Euglena gracilis on potato liquor [J] . Bozidar Santek, Michael Felski, Karl Friehs, Engineering in Life Sciences . 2010,第2期

机译：在马铃薯酒上通过异养Euglena gracilis种植副淀粉，一种β-1,3-葡聚糖
3. Production of paramylon, a beta-1,3-glucan, by heterotrophic cultivation of Euglena gracilis on a synthetic medium [J] . Santek Bozidar, Felski Michael, Friehs Karl, Engineering in Life Sciences . 2009,第1期

机译：通过在合成培养基上异养小球藻（Euglena gracilis）的异养栽培，生产β-1,3-葡聚糖的副mylon
4. Enhanced Biomass and Paramylon Production of Euglena gracilis under Photo-mixotrophic Culture Conditions by Symbiotic Bacteria [C] . Rubiyatno, Yasuhiro TANAKA, Kazuhiro MORI, Water and environment technology conference . 2019

机译：共生细菌在光合营养培养条件下增强了裸藻的生物量和副粘菌生产
5. Evaluating the Impact of Algal Biomass Augmentation on Primary Solids Fermentation and Associated Impacts of Fermenter Liquor on a Novel Post-Anoxic Enhanced Biological Phosphorus Removal Process. [D] . Romenesko, Taylor Mackey. 2017

机译：评估藻类生物质增加对一次固体发酵的影响以及发酵液对新型缺氧后增强生物除磷工艺的影响。
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机译：Paramylonβ-13-D-Glucan Z的慢性肾脏疾病啮齿动物模型中β-13-D-葡聚糖的重新调试作用
7. Comparative assessment of the Euglena gracilis var. saccharophila variant strain as a producer of the β‐1,3‐glucan paramylon under varying light conditions [O] . Angela Sun, Mafruha Tasnin Hasan, Graham Hobba, 2018

机译：Euglena Gracilis var的比较评估。 Saccharophola变体菌株作为在不同光线条件下的β-1,3-葡聚糖帕隆隆的生产者
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机译：东南地区生物质能源计划：生物质结晶糖的生产和发酵。年度报告，1984年8月9日至1986年5月31日

A new pilot-scale fermentation mode enhances Euglena gracilis biomass and paramylon (β-1,3-glucan) production

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