Functional bioactive compounds and biological activities of Spirulina platensis lipids

Abstract

The compositions and concentrations of lipid classes, fatty acids, tocopherols were determined in the lipids from blue-green microalga Spirulina platensis. Total lipids (TL) recovered using chloroform: methanol (2:1, v/v) were found to be 163.5 g/kg (on dry weight basis). The level of neutral lipids was the highest, followed by glycolipids and phospholipids, respectively. Among TL and lipid classes, palmitic, γ-linolenic and linoleic acids were the dominating fatty acids. Compared to the neutral lipids, the polar fractions were generally characterised by higher percentages of saturated fatty acids. The recovered lipids were characterised by high percentage of tocopherols, wherein α-tocopherol constitutes about 73% of total tocopherols present, the rest being γ-tocopherol. Spirulina platensis lipids exhibited a strong radical scavenging activity towards stable DPPH free radicals, whereas 27% of DPPH radicals were quenched after 2 h incubation. TL and lipid classes inhibited the growth of different microorganisms except gramnegative bacteria. At high concentrations, the tested lipids appeared more effective against a. niger (28.3 ± 1.53 mm). The information obtained in the present investigation is useful for lipid characterisation and further chemical and nutritional investigations of Spirulina platensis.

Oil extraction from microalgae for biodiesel production

“…Furthermore, most studies investigating microalgal lipid composition fail to assess the suitability of the extracted lipids for biodiesel production as they instead focus on nutraceutical/maricultural applications (De Angelis et al, 2005;Herrero et al, 2006;Ramadan et al, 2008;Sajilata et al, 2008). An ideal lipid extraction process for microalgal biodiesel production needs to be not only lipid specific in order to minimize the co-extraction of non-lipid contaminants but also selective towards desirable lipid fractions (neutral lipids containing mono-, di-, and trienoic fatty acid chains) (Fajardo et al, 2007;Medina et al, 1998).…”

Value added by Spirulina platensis in two different diets on growth performance, gut microbiota, and meat quality of Japanese quails

“…Spirulina can be considered as feed supplement that has many health benefits for humans, and a feed additive for animals having economic benefits [17]. SP is one of the most important micro-alga showing antimicrobial activity against many pathogenic bacteria and fungi [19] and it contains active ingredients such as tocopherols, C-phycocyanin, and extracellular polysaccharide [20-22] which have antimicrobial activities against Escherichia coli , Pseudomonas sp., Enterobacter sp., Salmonella Typhi ; Klebsiella pneumoniae , and Proteus vulgaris [23-26]. Staphylococcus aureus ; Staphylococcus epidermis and Aeromonas liquefaciens [27, 28].…”

Fatty Acids Profile of Coffea arabica L. Resistant to Leaf Rust Grown in Two Environments of Minas Gerais, Brazil

“…It is widely found in plants (Guil-Guerreiro, 2000;Knothe, 2013;Tso et al, 2013;Rojo et al, 2010). Some researchers have shown through the microbiologic analysis, that the gamma linolenic acid beyond its healing and nutritional characteristics, this fatty acid also shows antimicrobial characteristic (Desbois & Lawlor, 2013;Clement et al, 2008;Giamarellos-Bourboulis et al, 2004;Ramadan et al, 2008).…”