Rhodococcus and Yarrowia-Based Lipid Production Using Lignin-Containing Industrial Residues

2019 ◽  
pp. 103-120 ◽  
Author(s):  
Rosemary K. Le ◽  
Kristina M. Mahan ◽  
Arthur J. Ragauskas
Keyword(s):  
Lipid Production ◽  
Industrial Residues

Untangling the Metabolic Reprogramming in Brain Cancer: Discovering Key Molecular Players Using Mass Spectrometry

2019 ◽  
Vol 19 (17) ◽  
pp. 1521-1534 ◽  
Author(s):  
Anatoly Sorokin ◽  
Vsevolod Shurkhay ◽  
Stanislav Pekov ◽  
Evgeny Zhvansky ◽  
Daniil Ivanov ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Brain Cancer ◽  
De Novo ◽  
Aerobic Glycolysis ◽  
Lipid Production ◽  
Dietary Fatty Acids ◽  
Metabolic Reprogramming ◽  
Detection Methods ◽  
Malignant Cells ◽  
Proliferating Cells

Cells metabolism alteration is the new hallmark of cancer, as well as an important method for carcinogenesis investigation. It is well known that the malignant cells switch to aerobic glycolysis pathway occurring also in healthy proliferating cells. Recently, it was shown that in malignant cells de novo synthesis of the intracellular fatty acid replaces dietary fatty acids which change the lipid composition of cancer cells noticeably. These alterations in energy metabolism and structural lipid production explain the high proliferation rate of malignant tissues. However, metabolic reprogramming affects not only lipid metabolism but many of the metabolic pathways in the cell. 2-hydroxyglutarate was considered as cancer cell biomarker and its presence is associated with oxidative stress influencing the mitochondria functions. Among the variety of metabolite detection methods, mass spectrometry stands out as the most effective method for simultaneous identification and quantification of the metabolites. As the metabolic reprogramming is tightly connected with epigenetics and signaling modifications, the evaluation of metabolite alterations in cells is a promising approach to investigate the carcinogenesis which is necessary for improving current diagnostic capabilities and therapeutic capabilities. In this paper, we overview recent studies on metabolic alteration and oncometabolites, especially concerning brain cancer and mass spectrometry approaches which are now in use for the investigation of the metabolic pathway.

Dynamic flux balance analysis of biomass and lipid production by Antarctic thraustochytrid Oblongichytrium sp. RT2316‐13

2020 ◽  
Vol 117 (10) ◽  
pp. 3006-3017 ◽  
Author(s):  
Carolina Shene ◽  
Paris Paredes ◽  
Liset Flores ◽  
Allison Leyton ◽  
Juan A. Asenjo ◽  
...  
Keyword(s):  
Flux Balance Analysis ◽  
Lipid Production ◽  
Dynamic Flux Balance Analysis ◽  
Flux Balance ◽  
Balance Analysis

Enhancement of lipid production in Desmodesmus intermedius Z8 by ultrasonic stimulation coupled with nitrogen and phosphorus stress

2021 ◽  
pp. 108061
Author(s):  
Zhi Li ◽  
Shang-tian Yang ◽  
Zhi-you Zhou ◽  
Shuai-ying Peng ◽  
Qing-hua Zhang ◽  
...  
Keyword(s):  
Lipid Production ◽  
Nitrogen And Phosphorus ◽  
Phosphorus Stress ◽  
Ultrasonic Stimulation

scholarly journals Human crypt intestinal epithelial cells are capable of lipid production, apolipoprotein synthesis, and lipoprotein assembly

2000 ◽  
Vol 41 (1) ◽  
pp. 12-22 ◽  
Author(s):  
Emile Levy ◽  
Jean-François Beaulieu ◽  
Edgard Delvin ◽  
Ernest Seidman ◽  
Wagner Yotov ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Intestinal Epithelial Cells ◽  
Lipid Production ◽  
Intestinal Epithelial ◽  
Lipoprotein Assembly

scholarly journals Insights into the physiology of Chlorella vulgaris cultivated in sweet sorghum bagasse hydrolysate for sustainable algal biomass and lipid production

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Neha Arora ◽  
George P. Philippidis
Keyword(s):  
Sweet Sorghum ◽  
Lipid Production ◽  
Scale Up ◽  
Cellular Growth ◽  
Sweet Sorghum Bagasse ◽  
Triacylglycerol Synthesis ◽  
Sugar Addition ◽  
Dry Cell Weight ◽  
Sorghum Bagasse ◽  
Mixotrophic Conditions

AbstractSupplementing cultivation media with exogenous carbon sources enhances biomass and lipid production in microalgae. Utilization of renewable organic carbon from agricultural residues can potentially reduce the cost of algae cultivation, while enhancing sustainability. In the present investigation a medium was developed from sweet sorghum bagasse for cultivation of Chlorella under mixotrophic conditions. Using response surface methodology, the optimal values of critical process parameters were determined, namely inoculum cell density (O.D.750) of 0.786, SSB hydrolysate content of the medium 25% v/v, and zero medium salinity, to achieve maximum lipid productivity of 120 mg/L/d. Enhanced biomass (3.44 g/L) and lipid content (40% of dry cell weight) were observed when the alga was cultivated in SSB hydrolysate under mixotrophic conditions compared to heterotrophic and photoautotrophic conditions. A time course investigation revealed distinct physiological responses in terms of cellular growth and biochemical composition of C. vulgaris cultivated in the various trophic modes. The determined carbohydrate and lipid profiles indicate that sugar addition to the cultivation medium boosts neutral lipid synthesis compared to structural lipids, suggesting that carbon flux is channeled towards triacylglycerol synthesis in the cells. Furthermore, the fatty acid profile of lipids extracted from mixotrophically grown cultures contained more saturated and monosaturated fatty acids, which are suitable for biofuel manufacturing. Scale-up studies in a photobioreactor using SSB hydrolysate achieved a biomass concentration of 2.83 g/L consisting of 34% lipids and 26% carbohydrates. These results confirmed that SSB hydrolysate is a promising feedstock for mixotrophic cultivation of Chlorella and synthesis of algal bioproducts and biofuels.

scholarly journals Bicarbonate for microalgae cultivation: a case study in a chlorophyte, Tetradesmus wisconsinensis isolated from a Norwegian lake

2021 ◽  
Author(s):  
Ikumi Umetani ◽  
Eshetu Janka ◽  
Michal Sposób ◽  
Chris J. Hulatt ◽  
Synne Kleiven ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Lipid Production ◽  
Cetane Number ◽  
Fluorescence Analysis ◽  
Dry Weight ◽  
Maximum Growth ◽  
Biodiesel Fuel ◽  
Fatty Acid Production ◽  
Total Fatty Acids

AbstractBicarbonate was evaluated as an alternative carbon source for a green microalga, Tetradesmus wisconsinensis, isolated from Lake Norsjø in Norway. Photosynthesis, growth, and lipid production were studied using four inorganic carbon regimes: (1) aeration only, (2) 20 mM NaHCO3, (3) 5% (v/v) CO2 gas, and (4) combination of 20 mM NaHCO3 and 5% CO2. Variable chlorophyll a fluorescence analysis revealed that the bicarbonate treatment supported effective photosynthesis, while the CO2 treatment led to inefficient photosynthetic activity with a PSII maximum quantum yield as low as 0.31. Conversely, bicarbonate and CO2 treatments gave similar biomass and fatty acid production. The maximum growth rate, the final cell dry weight, and total fatty acids under the bicarbonate-only treatment were 0.33 (± 0.06) day−1, 673 (± 124) mg L−1 and 75 (± 5) mg g−1 dry biomass, respectively. The most abundant fatty acid components were α-linolenic acid and polyunsaturated fatty acids constituting 69% of the total fatty acids. The fatty acid profile eventuated in unsuitable biodiesel fuel properties such as high degree of unsaturation and low cetane number; however, it would be relevant for food and feed applications. We concluded that bicarbonate could give healthy growth and comparative product yields as CO2.

Continuous biomass and lipid production from local chlorella-bacteria consortium in raw wastewater using volatile fatty acids

2020 ◽  
Vol 42 (8) ◽  
pp. 1449-1455 ◽  
Author(s):  
Yongmei Zuo ◽  
Tassnapa Wongsnansilp ◽  
Xiaodong Zhang ◽  
Guiping Chen ◽  
Zhe Wu
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Lipid Production ◽  
Raw Wastewater
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