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中国生物工程杂志

China Biotechnology
China Biotechnology  2016, Vol. 36 Issue (11): 39-47    DOI: 10.13523/j.cb.20161106
    
Cultivation of Haematococcus pluvialis on Urban Sewage
ZHANG Huai jin1,2, ZHANG Jing jing1,2, ZHOU Jin2, JIN Hui1,2, CAI Zhong hua2
1. School of Life Science, Tsinghua University. Beijing 100084, China;
2. Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua University. Shenzhen 518055, China
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Abstract  

Astaxanthin, a red-orange carotenoid pigment, is a powerful biological antioxidant that occurs naturally in a wide variety of living organisms. As a valuable natural product, astaxanthin was widely used in food and cosmetics industry, and considerable potential applications in human health and clinical medicine. Among the acquire process of astaxanthin, Haematococcus pluvialis is the most effective biological source. There are two ways to increase the production of astaxanthin:increasing the biomass and improving the synthesis efficiency. Previously research works have obtained many positive results, there is still a long-way to achieve the highest cost performance ratio. Thus, the municipal wastewater as medium to culture the H. pluvialis is used. The results shows that swage can improve the growth of H. pluvialis greatly, and the biomass is over 2-fold than the control medium (BG11 medium). After detect the level of heavy metal content in the H. pluvialis cell, there was no significant heavy metal enrichment in the algal body. The hazardous metal concentrations in the safe range. In addition, the new develop method can accelerate the products synthetise, and made the synthetic period of astaxanthin advanced significantly (P<0.05). Besides, it is worth noting that the content of nitrogen and phosphorus in the sewage reduced significantly with the growth of algae (P<0.05), eutrophic wastewater has been efficiently improved. Tanken together, our experiment demonstrate the feasibility to culture H. pluvialis by sewage. It can bring double effects:accumulation algal biomass, and helpful to purify water quality. The excellent economic and ecological benefits in algae culturing industry can be gained.



Key wordsEcological benefits      Astaxanthin      Water purification      Municipal wastewater      Haematococcus pluvialis     
Received: 05 May 2016      Published: 25 November 2016
ZTFLH:  Q493.99  
Cite this article:

ZHANG Huai jin, ZHANG Jing jing, ZHOU Jin, JIN Hui, CAI Zhong hua. Cultivation of Haematococcus pluvialis on Urban Sewage. China Biotechnology, 2016, 36(11): 39-47.

URL:

https://manu60.magtech.com.cn/biotech/10.13523/j.cb.20161106     OR     https://manu60.magtech.com.cn/biotech/Y2016/V36/I11/39

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