High Lipid Content in Unicellular Green Alga Asteracys sp. FFP40 Isolated from Food Industrial Wastewater in Phra Nakhon Si Ayutthaya Province

2019 International Conference on Power, Energy and Innovations (ICPEI) Pub Date : 2019-10-01 DOI:10.1109/ICPEI47862.2019.8944971

Samart Taikhao, Suntara Fueangfung, Wachiraporn Srisong

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Abstract

Green algae are photoautotrophic and photoheterotrophic microorganisms that are capable of lipid production. This study aims to isolate green algae from food industrial wastewater in Phra Nakhon Si Ayutthaya province. Thirty isolates of green algae were isolated from wastewater of four food industrial plants. Lipid content under cultivated cells in N-deprivation Tris Acetate Phosphate TAP(-N) medium was measured in order to select the green algae that had the highest lipid production. The results found that among 30 green algal strains, the green alga Asteracys sp. FFP40 showed the highest lipid content of 2.884±0.064 % (w/w) under cultivated cells in TAP(-N) medium for 3 days. During photoheterotrophic cultivation in TAP medium, Asteracys sp. FFP40 was rapidly grown to the stationary growth phase after 48h. The biomass of Asteracys sp. FFP40 was continuously increased and reached to 0.966±0.115 mg ml-1 after 120h of cultivation. Finally, Asteracys sp. FFP40 also provided the highest lipid content of 58.446±0.652 % (w/w) under cultivated cells in TAP(-N) medium for 28 days. These results indicated that Asteracys sp. FFP40 could be a source of highly efficient lipid production for biodiesel evolution in the future.

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从Phra Nakhon Si Ayutthaya省食品工业废水中分离的单细胞绿藻Asteracys sp. FFP40的高脂含量

绿藻是能够产脂的光自养和光异养微生物。本研究旨在从Phra Nakhon Si Ayutthaya省的食品工业废水中分离绿藻。从4家食品工业废水中分离出30株绿藻。在缺氮Tris Acetate Phosphate TAP(-N)培养基中，测定培养细胞的脂质含量，筛选出产脂量最高的绿藻。结果发现，在30株绿藻中，在TAP(-N)培养基中培养3 d，绿藻Asteracys sp. FFP40的细胞脂质含量最高，为2.884±0.064% (w/w)。在TAP培养基中进行光异养培养时，Asteracys sp. FFP40在48h后迅速生长到稳定期。培养120h后，Asteracys sp. FFP40的生物量不断增加，达到0.966±0.115 mg ml-1。最后，Asteracys sp. FFP40在TAP(-N)培养基中培养28 d，脂质含量最高，为58.446±0.652% (w/w)。这些结果表明，Asteracys sp. FFP40可能是未来生物柴油进化的高效脂质来源。

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2019 International Conference on Power, Energy and Innovations (ICPEI)

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