Effects of the light intensity and the reactor geometry on the microalgae yield in a bubble-column photobioreactor

2020 ◽  
Author(s):  
Yuswan Muharam ◽  
Dianursanti ◽  
Aditya Bintang Pramadana ◽  
Syailendra Supit
Keyword(s):  
Light Intensity ◽  
Bubble Column ◽  
Reactor Geometry ◽  
Bubble Column Photobioreactor

scholarly journals An Integrated Strategy for Nutraceuticals from Haematoccus pluvialis: From Cultivation to Extraction

Antioxidants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 825 ◽  
Author(s):  
Sanjeet Mehariya ◽  
Neeta Sharma ◽  
Angela Iovine ◽  
Patrizia Casella ◽  
Tiziana Marino ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Light Intensity ◽  
Haematococcus Pluvialis ◽  
Bubble Column ◽  
High Stress ◽  
Bioactive Compound ◽  
High Light Intensity ◽  
Total Carotenoids ◽  
Batch Mode ◽  
Bubble Column Photobioreactor

The aim of this study was to develop an effective integrated cultivation system for Haematococcus pluvialis as a source of bioactive compounds such as astaxanthin, lutein, proteins, and fatty acids (FAs). The Chlorophyta H. pluvialis was cultivated in a vertical bubble column photobioreactor (VBC-PBR) under batch mode, allowing switching from green to red phase for astaxanthin induction. The combined effect of light intensity and nutrients on bioactive compound formation was investigated. Results showed that growth under lower nutrients availability and light intensity led to a higher concentration of biomass. Growth under high light intensity with an appropriate concentration of nitrate, sulfate, phosphate and magnesium led to ~85% and ~58% higher production of total carotenoids and fatty acids, respectively. Under high stress conditions, ~90% nitrate and phosphate consumption were observed.

scholarly journals Combined Production of Astaxanthin and β-Carotene in a New Strain of the Microalga Bracteacoccus aggregatus BM5/15 (IPPAS C-2045) Cultivated in Photobioreactor

Biology ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 643
Author(s):  
Konstantin Chekanov ◽  
Daniil Litvinov ◽  
Tatiana Fedorenko ◽  
Olga Chivkunova ◽  
Elena Lobakova
Keyword(s):  
Bubble Column ◽  
Biomass Accumulation ◽  
Natural Antioxidants ◽  
Gas Chromatography Mass Spectrometry ◽  
Stage Scheme ◽  
Green Microalga ◽  
Animal Feeding ◽  
Carotenoid Synthesis ◽  
Bubble Column Photobioreactor ◽  
Β Carotene

Carotenoids astaxanthin and β-carotene are widely used natural antioxidants. They are key components of functional food, cosmetics, drugs and animal feeding. They hold leader positions on the world carotenoid market. In current work, we characterize the new strain of the green microalga Bracteacoccus aggregatus BM5/15 and propose the method of its culturing in a bubble-column photobioreactor for simultaneous production of astaxanthin and β-carotene. Culture was monitored by light microscopy and pigment kinetics. Fatty acid profile was evaluated by tandem gas-chromatography–mass spectrometry. Pigments were obtained by the classical two-stage scheme of autotrophic cultivation. At the first, vegetative, stage biomass accumulation occurred. Maximum specific growth rate and culture productivity at this stage were 100–200 mg∙L−1∙day−1, and 0.33 day−1, respectively. At the second, inductive, stage carotenoid synthesis was promoted. Maximal carotenoid fraction in the biomass was 2.2–2.4%. Based on chromatography data, astaxanthin and β-carotene constituted 48 and 13% of total carotenoid mass, respectively. Possible pathways of astaxanthin synthesis are proposed based on carotenoid composition. Collectively, a new strain B. aggregatus BM5/15 is a potential biotechnological source of two natural antioxidants, astaxanthin and β-carotene. The results give the rise for further works on optimization of B. aggregatus cultivation on an industrial scale.

High efficiency production of astaxanthin by autotrophic cultivation of Haematococcus pluvialis in a bubble column photobioreactor

2008 ◽  
Vol 39 (3) ◽  
pp. 575-580 ◽  
Author(s):  
Reza Ranjbar ◽  
Ryota Inoue ◽  
Hironori Shiraishi ◽  
Tomohisa Katsuda ◽  
Shigeo Katoh
Keyword(s):  
High Efficiency ◽  
Haematococcus Pluvialis ◽  
Bubble Column ◽  
Bubble Column Photobioreactor

Effects of nutrient ratios and carbon dioxide bio-sequestration on biomass growth of Chlorella sp. in bubble column photobioreactor

2018 ◽  
Vol 219 ◽  
pp. 1-8 ◽  
Author(s):  
Hoang-Nhat-Phong Vo ◽  
Xuan-Thanh Bui ◽  
Thanh-Tin Nguyen ◽  
Dinh Duc Nguyen ◽  
Thanh-Son Dao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Bubble Column ◽  
Nutrient Ratios ◽  
Biomass Growth ◽  
Chlorella Sp ◽  
Bubble Column Photobioreactor
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