一株新菌株金氧化钇(Aurantiochytrium sp.) L3W及其产脂特性(含脂肪酸

Q3 Environmental Science

Journal of Water and Environment Technology Pub Date : 2021-01-01 DOI:10.2965/JWET.20-087

S. Nakai, A. Das, Yuya Maeda, N. Humaidah, Masaki Ohno, W. Nishijima, Takehiko Gotoh, T. Okuda

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引用次数: 5

摘要

Aurantiochytrium等Thraustochytrids是异养的，可以产生有价值的脂肪酸(FAs)，因此有望成为去除废水中有机化合物和同时生产FAs的工具。从红树林叶片样品中分离到4株Aurantiochytrium sp.，其中菌株L3W在25℃条件下的比生长率高达0.27 1/h。此外，该菌株在温度为15℃~ 35℃，pH为3 ~ 9，盐度为0.3 ~ 70 PSU的条件下生长。菌株L3W在25℃、30 PSU、pH7的最佳条件下，FAs产量为270 mg/g，其中二十二碳六烯酸135 mg/g、五烷酸11 mg/g、麦草酸9.3 mg/g。此外，菌株L3W在pH3和pH9下产生这些FAs。菌株L3W对pH和盐度的耐受性可能有利于其在未消毒废水中与其他微生物竞争生产有价值的FAs。

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A Novel Strain of Aurantiochytrium sp. Strain L3W and Its Characteristics of Biomass and Lipid Production Including Valuable Fatty Acids

Thraustochytrids such as Aurantiochytrium are heterotrophic and produce valuable fatty acids (FAs) and therefore expected as a tool for removal of organic compounds in wastewater and simultaneous production of FAs. The four strains of Aurantiochytrium sp. were isolated from the mangrove leaf samples, and among these the strain L3W showed the high specific growth rate of 0.27 1/h at 25°C. In addition, this strain grew at the ranges of temperature from 15°C to 35°C, pH from 3 to 9, and salinity from 0.3 to 70 PSU. Under the optimal condition of 25°C, 30 PSU, and pH7, the strain L3W produced 270 mg/g of FAs including 135 mg/g of docosahexaenoic acid, 11 mg/g of pentadecanoic acid and 9.3 mg/g of margaric acid. Furthermore, the strain L3W produced these FAs at pH3 and pH9. The pH and salinity tolerance of the strain L3W might be advantageous in its application for production of valuable FAs under competition with other microorganisms in unsterile wastewater.

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来源期刊

Journal of Water and Environment Technology Environmental Science-Water Science and Technology

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

43 weeks

期刊介绍： The Journal of Water and Environment Technology is an Open Access, fully peer-reviewed international journal for all aspects of the science, technology and management of water and the environment. The journal’s articles are clearly placed in a broader context to be relevant and interesting to our global audience of researchers, engineers, water technologists, and policy makers. JWET is the official journal of the Japan Society on Water Environment (JSWE) published in English, and welcomes submissions that take basic, applied or modeling approaches to the interesting issues facing the field. Topics can include, but are not limited to: water environment, soil and groundwater, drinking water, biological treatment, physicochemical treatment, sludge and solid waste, toxicity, public health and risk assessment, test and analytical methods, environmental education and other issues. JWET also welcomes seminal studies that help lay the foundations for future research in the field. JWET is committed to an ethical, fair and rapid peer-review process. It is published six times per year. It has two article types: Original Articles and Review Articles.