scholarly journals Evaluation of two Portuguese strains of Botryococcus braunii as biofuel feedstock

2017 ◽  
Vol 8 (2) ◽  
pp. 20-29 ◽  
Author(s):  
Tavares Joao ◽  
Pardal Tiago ◽  
Melo Ricardo
Keyword(s):  
Botryococcus Braunii ◽  
Biofuel Feedstock

Characterization of oil-extracted residue biomass of Botryococcus braunii as a biofuel feedstock and its pyrolytic behavior

2014 ◽  
Vol 132 ◽  
pp. 475-484 ◽  
Author(s):  
Hideo Watanabe ◽  
Dalin Li ◽  
Yoshinao Nakagawa ◽  
Keiichi Tomishige ◽  
Kunimitsu Kaya ◽  
...  
Keyword(s):  
Botryococcus Braunii ◽  
Biofuel Feedstock ◽  
Residue Biomass

CULTIVATION SYSTEM OF GREEN MICROALGAE, BOTRYOCOCCUS BRAUNII: A REVIEW

2015 ◽  
Vol 76 (5) ◽  
Author(s):  
Nor Azalina Zakariah ◽  
Norazah Abd. Rahman ◽  
Fazlena Hamzah ◽  
Tajuddin Md Jahi
Keyword(s):  
Internal Combustion Engines ◽  
Simple Structure ◽  
Lipid Production ◽  
Botryococcus Braunii ◽  
Food Sources ◽  
Combustion Engines ◽  
Cultivation System ◽  
Biofuel Feedstock ◽  
Two Stages

Renewable energy by using microalgae is another route to solve fossil fuel dependence, reduce climate change and enhance food security. The microalgae has a simple structure. Photosynthesis reaction of the microalgae converts solar energy into chemical energy which later can be used as fuel. This paper reviews microalgae as a new prospective for biofuel feedstock that is produced from non - food sources which offer a long term of sustainability and energy security. The cultivation system under open and closed system are discussed in this paper. A common weakness of the systems is low lipid production. A two stages culture also known as hybrid cultivation system that is discuseed in this paper can be used to overcome the weakness. A review on the performance of the microalgae biofuel  applying in the internal combustion engines is presented in the last section of this paper.

High-throughput screen for sorting cells capable of producing the biofuel feedstock botryococcene

2019 ◽  
Vol 17 (12) ◽  
pp. 3195-3201
Author(s):  
Allen R. Chacko ◽  
Daniel E. Amster ◽  
Tyler E. Johnson ◽  
Sara R. Newman ◽  
Angelina V. Gladchuk ◽  
...  
Keyword(s):  
High Throughput ◽  
Botryococcus Braunii ◽  
High Throughput Screen ◽  
Biofuel Feedstock

Botryococcene is a branched triterpene produced by the algae Botryococcus braunii.

Pengaruh Senyawa Merkuri Klorida (HgCl2) Terhadap Pertumbuhan dan Kandungan Pigmen Klorofil Mikroalga Botryococcus braunii

2017 ◽  
Vol 4 (2) ◽  
pp. 23
Author(s):  
Grace Simanjuntak ◽  
Desy Mantiri ◽  
Kurniati Kemer
Keyword(s):  
Botryococcus Braunii

Penelitian ini bertujuan untuk mengetahui pertumbuhan populasi Botryococcus braunii dengan pemberian senyawa merkuri klorida (HgCl2) serta untuk mengetahui konsentrasi pigmen klorofil dari ekstrak pigmen total yang telah diberi senyawa merkuri klorida (HgCl2) terhadap mikroalga Botryococcus braunii. Stok mikroalga yang digunakan diperoleh dari Pusat Penelitian Dan Pengembangan Daya Saing Produk Dan Bioteknologi Kelautan Dan Perikanan, di Jalan KS Tubun- Pertamburan VI, Slipi, Jakarta Pusat. Stok mikroalga yang telah ada dikeluarkan dari cool box (kotak pendingin). Selanjutnya stok tersebut dibuat medium yang telah diisi oleh air laut dan media conway, setelah itu diberi aerator kemudian di kulturisasi di ruang kultur bersuhu 25oC dengan penerangan lampu tabung 40 watt selama 24 jam dan dikontrol. Kulturisasi dan perlakuan senyawa merkuri klorida dilakukan di Laboratorium Biologi Molekur dan Farmasitika Laut Fakultas Perikanan dan Ilmu Kelautan, serta untuk mengetahui panjang gelombang dan kandungan pigmennya menggunakan alat spektrofotometri dilakukan di Laboratorium Farmasi  FMIPA. Berdasarkan hasil penelitian yang telah dilakuan didapatkan senyawa merkuri klorida (HgCl2) dengan konsentrasi 2 ppm mengalami penurunan jumlah sel pada hari kedelapan, jumlah selnya 1,9 sel/ml Botryococcus braunii. Artinya senyawa yang tinggi dapat menurunkan konsentrasi pigmen sehingga menghalangi terjadinya proses fotosinteisis dengan menghambat pembelahan sel.

DLA Energy Biofuel Feedstock Metrics Study

2012 ◽  
Author(s):  
Jeremey M. Alcorn ◽  
Virginia A. Bostock ◽  
Stuart Funk ◽  
Karen M. Hagberg ◽  
James Hardison ◽  
...  
Keyword(s):  
Biofuel Feedstock

scholarly journals Metabolic response of Botryococcus braunii to high bicarbonate dosages and other conditions: analysis of photosynthetic performance, productivity, and lipidomic profile

2021 ◽  
Author(s):  
Néstor David Giraldo ◽  
Sandra Marcela Correa ◽  
Andrés Arbeláez ◽  
Felix L. Figueroa ◽  
Rigoberto Ríos-Estepa ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Metabolic Response ◽  
Neutral Lipids ◽  
Biomass Productivity ◽  
Botryococcus Braunii ◽  
Photosynthetic Performance ◽  
Lipid Productivity ◽  
Cellular Growth ◽  
Adaptive Responses ◽  
Nitrogen And Phosphorus

AbstractIn this study the metabolic responses of Botryococcus braunii were analyzed upon different inorganic carbon dosages and nutrient limitation conditions in terms of lipid and biomass productivity, as well as photosynthetic performance. The nutritional schemes evaluated included different levels of sodium bicarbonate and nitrogen and phosphorus starvation, which were contrasted against standard cultures fed with CO2. Bicarbonate was found to be an advantageous carbon source since high dosages caused a significant increase in biomass and lipid productivity, in addition to an enhanced photosynthetic quantum yield and neutral lipids abundance. This contrasts to the commonly used approach of microalgae nutrient limitation, which leads to high lipid accumulation at the expense of impaired cellular growth, causing a decline in overall lipid productivity. The lipidome analysis served to hypothesize about the influence of the nutritional context on B. braunii structural and storage lipid metabolism, besides the adaptive responses exhibited by cells that underwent nutrient stress.

scholarly journals Large-scale screening of natural genetic resource in the hydrocarbon-producing microalga Botrycoccus braunii identified novel fast-growing strains

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Koji Kawamura ◽  
Suzune Nishikawa ◽  
Kotaro Hirano ◽  
Ardianor Ardianor ◽  
Rudy Agung Nugroho ◽  
...  
Keyword(s):  
Large Scale ◽  
Biomass Productivity ◽  
Botryococcus Braunii ◽  
Algal Biofuel ◽  
Fast Growing ◽  
Wild Strains ◽  
Glass Tubes ◽  
The Tropics ◽  
Large Scale Screening ◽  
Hydrocarbon Productivity

AbstractAlgal biofuel research aims to make a renewable, carbon–neutral biofuel by using oil-producing microalgae. The freshwater microalga Botryococcus braunii has received much attention due to its ability to accumulate large amounts of petroleum-like hydrocarbons but suffers from slow growth. We performed a large-scale screening of fast-growing strains with 180 strains isolated from 22 ponds located in a wide geographic range from the tropics to cool-temperate. A fast-growing strain, Showa, which recorded the highest productivities of algal hydrocarbons to date, was used as a benchmark. The initial screening was performed by monitoring optical densities in glass tubes and identified 9 wild strains with faster or equivalent growth rates to Showa. The biomass-based assessments showed that biomass and hydrocarbon productivities of these strains were 12–37% and 11–88% higher than that of Showa, respectively. One strain, OIT-678 established a new record of the fastest growth rate in the race B strains with a doubling time of 1.2 days. The OIT-678 had 36% higher biomass productivity, 34% higher hydrocarbon productivity, and 20% higher biomass density than Showa at the same cultivation conditions, suggesting the potential of the new strain to break the record for the highest productivities of hydrocarbons.

Fuelling rural development? The impact of biofuel feedstock production in southern Africa on household income and expenditures

2021 ◽  
Vol 76 ◽  
pp. 102053
Author(s):  
S. Mudombi ◽  
C. Ochieng ◽  
F.X. Johnson ◽  
G. von Maltitz ◽  
D. Luhanga ◽  
...  
Keyword(s):  
Rural Development ◽  
Southern Africa ◽  
Household Income ◽  
Biofuel Feedstock ◽  
Feedstock Production ◽  
The Impact
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