Enhancement of microalga Haematococcus pluvialis growth and astaxanthin production by electrical treatment
- Authors
- Kim, Jee Young; Lee, Changsu; Jeon, Min Seo; Park, Jaewon; Choi, Yoon-E
- Issue Date
- Nov-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Haematococcus pluvialis; Astaxanthin; Electrical treatment; Periodical treatment
- Citation
- BIORESOURCE TECHNOLOGY, v.268, pp.815 - 819
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 268
- Start Page
- 815
- End Page
- 819
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/72031
- DOI
- 10.1016/j.biortech.2018.08.014
- ISSN
- 0960-8524
- Abstract
- In this study, we investigated the effects of electrical treatment on Haematococcus pluvialis growth. The slow growth of H. pluvialis is a major limitation for its mass production. We discovered that electrical treatment may promote the growth of H. pluvialis. To evaluate optimal growth-promoting conditions, the algal growth rate was investigated at various voltages. The optimum current was identified as 100 mA (voltage: 25 V). In comparison with the non-treated cells, those subjected to electrical treatment showed a 1.2 fold increase in cell density. Further experiments confirmed the direct impact of electrical treatment on the growth of H. pluvialis. The periodic application of electrical voltage resulted in a significant increase in the dry weight and astaxanthin production. The astaxanthin content in the periodic application of electrical treatment was 32.6 mg/L, which was a 10% increase compared to those in the non-treated controls. This strategy may serve as a novel approach to enhance H. pluvialis growth as well as astaxanthin production.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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