Effects of red and blue light emitting diodes on biomass and astaxanthin of Haematococcus pluvialis in pilot scale angled twin-layer porous substrate photobioreactors
oleh: Thanh-Tri Do, Bich-Huy Tran-Thi, Binh-Nguyen Ong, Tuan-Loc Le, Thanh-Cong Nguyen, Quoc-Dang Quan, Thuong-Chi Le, Dai-Long Tran, Michael Melkonian, Hoang-Dung Tran
| Format: | Article |
|---|---|
| Diterbitkan: | Vietnam Ministry of Science and Technology 2022-03-01 |
Deskripsi
The production of natural astaxanthin is usually accomplished by suspended cultivation of the microalgae Haematococcus pluvialis. In this study, for the purpose of cost reduction, H. pluvialis is grown in pilot scale angled twin-layer porous substrate photobioreactors with light energy from red/blue LEDs that can produce red light, blue light, or a combination of blue-red light. The total dry biomass of the microalgae reached a maximum of 40.74 g.m-2 under blue-red LEDs. The early initiation of blue-red LED illumination (on day 2) after algae immobilization in the biofilm resulted in the highest accumulation of astaxanthin in the dry biomass, which reached a maximum of 1.3% (w/w) after 10 d of culture.