scholarly journals Investigation of Growth, Lipid Productivity, and Fatty Acid Profiles in Marine Bloom-Forming Dinoflagellates as Potential Feedstock for Biodiesel

2020 ◽  
Vol 8 (6) ◽  
pp. 381
Author(s):  
Steven Jingliang Xu ◽  
Kam-Chau Wu ◽  
Sophie Cheuk-Yan Chan ◽  
Yiu-Hung Yau ◽  
Kin-Ka Chan ◽  
...  
Keyword(s):  
Growth Rate ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Green Alga ◽  
Algal Bloom ◽  
Harmful Algal Bloom ◽  
Total Lipid Content ◽  
Lipid Productivity ◽  
Biodiesel Production ◽  
Significant Difference

Microalgae-based biodiesel is increasingly recognized as an alternative to crop-based biodiesel. In this study, 10 local strains of dinoflagellates collected from Hong Kong waters, including a monoculture and field sample of Scrippsiella sp. isolated from an algal bloom, were evaluated against the performance of green alga Tetraselmis suecica. The specific growth rate, biomass production, lipid productivity, and fatty acid profile were investigated. The total lipid content of isolated strains ranged from 16.2% to 32.2% of the total dry biomass, whereas palmitic acid (C16:0) and docosahexaenoic acid (DHA, C22:6n3) were dominant in the fatty acid profile. Scrippsiella sp. has a high lipid productivity (47.3 mg/L/day) and fatty acid methyl esters (FAME) content (55.2–73 mg/g dry weight (dw)), which were comparable to that in green alga T. suecica. Further, monoculture and field sampled blooming Scrippsiella sp. showed no significant difference in most parameters, suggesting the possibility of harvesting a natural algal bloom population as a mitigation strategy to harmful algal bloom and to use as biodiesel feedstock. Overall, dinoflagellate species showed a slower growth rate (0.04–0.57 day−1) than most compared species (0.07–1.34 day−1), likely due to a large genome size and low chlorophyll to carbon ratio. Notably, most investigated dinoflagellates were not ideal for mass biodiesel production due to the low growth rate and lipid productivity. However, a high level of polyunsaturated fatty acids (PUFA) in dinoflagellates are prospective for further studies in other biotechnological applications. Though effectively harvesting algal blooming biomass can be complex, it can be further explored as a strategy for algal bloom mitigation and potentially creating values at the advantage of natural bloom when applying harvested biomass for biodiesel and bioactive compounds extraction.

Evaluation of microalgal strains and microalgal consortium for higher lipid productivity and rich fatty acid profile towards sustainable biodiesel production

2021 ◽  
pp. 125524
Author(s):  
Chitirai Arutselvan ◽  
Ganeshan Narchonai ◽  
Arivalagan Pugazhendhi ◽  
Felix Lewis Oscar ◽  
Nooruddin Thajuddin
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Lipid Productivity ◽  
Biodiesel Production

scholarly journals Impact of genotype on fatty acid profile, oil content and nutritional value of the sweet fruits of Acrocomia aculeata

2020 ◽  
Vol 42 (6) ◽  
Author(s):  
Rosemar Antoniassi ◽  
Sidinea Cordeiro de Freitas ◽  
Tania dos Santos Silva ◽  
Manuela Cristina Pessanha de Araujo Santiago ◽  
Allan Eduardo Wilhelm ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Nutritional Value ◽  
Oil Content ◽  
Biodiesel Production ◽  
Fruit Characteristics ◽  
Total Dietary Fiber ◽  
Glucose Content ◽  
Significant Difference ◽  
Acrocomia Aculeata

Abstract Macauba (Acrocomia aculeata) has mainly been evaluated as an oil source focused on biodiesel production. Furthermore, the fruit mesocarp and kernel are edible, and candies, jelly, sweet alcoholic liquor and ice cream are also produced from the mesocarp. Despite its consumption, there is still a lack of information on the nutritional composition of macauba. Selected macauba genotypes producing fruits with a sweet mesocarp were evaluated regarding the fruit characteristics, proximate composition, oil content and fatty acid profile. The mesocarp total sugar (fructose and glucose) content ranged from 4.5 to 9.6 g/100 g, total dietary fiber varied from 6.8 to 9.3 g/100 g, while protein content was up to 2.2 g/100 g (wet basis). There was a significant difference among genotypes for fruit characteristics, pulp oil content (7-29 g/100 g wet basis), and fatty acids from the mesocarp such as C18:1 (36-63%), C18:2 (7-35%) and C18:3 (0.8-7%)(p<0.05), and one of the evaluated genotypes may contribute to daily intake of linoleic and linolenic acids. The carotenes in the mesocarp oil ranged from 30-240 mg/kg. Lauric acid was the main fatty acid in the kernel oil. The differences observed depended on the genetic diversity and point out the nutritional value and different applications for macauba mesocarps.

scholarly journals Biochemical profiling, prediction of total lipid content and fatty acid profile in oleaginous yeasts by FTIR spectroscopy

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Volha Shapaval ◽  
Jule Brandenburg ◽  
Johanna Blomqvist ◽  
Valeria Tafintseva ◽  
Volkmar Passoth ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Ftir Spectroscopy ◽  
Fatty Acid Profile ◽  
Total Lipid ◽  
Lipid Content ◽  
Total Lipid Content ◽  
Oleaginous Yeasts

Training-induced alterations of the fatty acid profile of rabbit muscles

2002 ◽  
Vol 50 (3) ◽  
pp. 357-364 ◽  
Author(s):  
Éva Szabó ◽  
R. Romvári ◽  
Hedvig Fébel ◽  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Acid Composition ◽  
Vastus Lateralis ◽  
Total Activity ◽  
Treadmill Running ◽  
Control Group ◽  
Daily Routine ◽  
Significant Difference

The present study was designed to investigate whether meat-type rabbits are able to perform treadmill running as a daily routine exercise, and if so, whether the exercise induces specific proportional changes in the fatty acid composition of their muscles. After a four-week training period 8-week-old rabbits were slaughtered and the total activity of plasma lactate dehydrogenase was measured, showing a significant difference between the exercised and control groups (429 ± 126 IU/l vs. 639 ± 203 IU/l). Furthermore the fatty acid composition of m. longissimus dorsi (MLD) and m. vastus lateralis (MVL) was determined by means of gas chromatography. Exercise increased the proportions of oleic acid (C18:1 n-9) in both MLD and MVL as compared to the control group. However, the level of stearic (C18:0) and arachidonic (C20:4 n-6) acids significantly decreased in the MVL after the exercise. Changes in the fatty acid profile resulting from the physically loaded condition were of the same tendency in both muscles, adding that the MVL might have been exposed to the exercise more intensively; alterations there occurred in a more pronounced manner. Based on the inference that the composition of membrane structure was also affected, these alterations may have important consequences on meat quality.

scholarly journals Oil and fatty acid profile of seeds of soybean cultivars and their relationship with biodiesel and feeding

2018 ◽  
Vol 4 (2) ◽  
pp. 101
Author(s):  
Ricardo Del Águila
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Saturated Fatty Acids ◽  
Biodiesel Production ◽  
Northeastern Brazil ◽  
Human Consumption ◽  
Minimum Level ◽  
Soybean Cultivars ◽  
Biodiesel Industry

The aim of this study was to evaluate the fatty acid profile in soybean cultivars from northeastern Brazil, materials developed primarily to achieve a minimum level of oil and protein. The purpose is to serve as to warn about the need to modify fatty acids profiles to enhance both the oil for human consumption and that used in biodiesel production. Results showed the predominance of linoleic acid (average 50.1%) followed by oleic acid (27.9%), palmitic acid (11.97%), linolenic acid (6.68%) and stearic acid (3.38%) in the composition of fatty acids. Such condition makes soybean oil less competitive for both human consumption (for its high content of saturated fatty acids) and the biodiesel industry (problems with oxidative stability and flow in the cold). Considerations are also made on conventional and modern techniques to overcome these drawbacks.

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