Optimum Production Conditions, Purification, Identification, and Antioxidant Activity of Violaxanthin from Microalga Eustigmatos cf. polyphem (Eustigmatophyceae)

Wang, Feifei; Huang, Luodong; Gao, Baoyan; Zhang, Chengwu

doi:10.3390/md16060190

Cited by 46 publications

(19 citation statements)

References 34 publications

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“…The C16:1 fatty acid was dominant in four of the six investigated species [13]. With its properties, palmitoleic acid is used in biodiesel production and as an ingredient of cosmetics, functional foods, and pharmaceuticals [13]. As shown in this study, extension of the lighting time from 16 to 24 h promoted the accumulation of the C16:1 acid in Eustigmatos magnus cells.…”

Section: Discussionsupporting

confidence: 54%

“…Eustigmatophyceae are characterized by the presence of chlorophyll a only, but no content of chlorophylls b and c. Violaxanthin, vaucheriaxanthin, zeaxanthin, and β-carotene are their main pigments [12,13]. The decrease in the chlorophyll a content in the Eustigmatos magnus cells observed in this study in the continuous lighting variant was caused by the appearance of its oxidized forms in the CL HL experiment.…”

Section: Discussionsupporting

confidence: 43%

“…Wang et al studied the fatty acid profile of eustigmatophycean microalgae at different initial nitrogen concentrations. The C16:1 fatty acid was dominant in four of the six investigated species [13]. With its properties, palmitoleic acid is used in biodiesel production and as an ingredient of cosmetics, functional foods, and pharmaceuticals [13].…”

Section: Discussionmentioning

confidence: 99%

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Enhanced Light-Induced Biosynthesis of Fatty Acids Suitable for Biodiesel Production by the Yellow-Green Alga Eustigmatos magnus

et al. 2020

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Optimization of the fatty acid profile in microalgae is one of the key strategies for obtaining valuable products and sustainable biofuels. Light intensity and light regimes exert an impact on the growth and metabolic process in microalgae. The objective of the present investigations was to assess the effect of light intensity and continuous light vs. photoperiod conditions on the growth and changes in the biomass composition in Eustigmatos magnus, with a focus on bioactive molecules such as lipids and fatty acids. The highest daily productivity of Eustigmatos magnus biomass and lipid yields were detected at continuous illumination and at the highest intensity of light. The results show that the content and composition of fatty acids was influenced by the culture conditions. The biomass of Eustigmatos magnus contained the highest concentrations of polyunsaturated fatty acids in the pphotoperiod conditions with the highest light intensity. This study shows that Eustigmatos magnus has a capacity for the accumulation of palmitoleic acid. A high intensity of continuous light improves the profile of fatty acids in Eustigmatos magnus, which can be suitable for biodiesel applications. At the high intensity of continuous light, Eustigmatos magnus lipids are characterized by high content of oleic acids and low content of saturated and monounsaturated acids.

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Section: Discussionsupporting

confidence: 54%

Section: Discussionsupporting

confidence: 43%

Section: Discussionmentioning

confidence: 99%

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Enhanced Light-Induced Biosynthesis of Fatty Acids Suitable for Biodiesel Production by the Yellow-Green Alga Eustigmatos magnus

et al. 2020

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“…In agreement with this data, and underlining the effect of the nitrogen concentration on SM production, Wang et al showed that either very high or insufficient nitrogen concentrations limited the ability of the microalga Eustigmatos cf. polyphem to produce the antioxidant pigment violaxanthin [ 45 ].…”

Section: Change In Nutrient Regimesmentioning

confidence: 99%

Extending the “One Strain Many Compounds” (OSMAC) Principle to Marine Microorganisms

et al. 2018

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Genomic data often highlights an inconsistency between the number of gene clusters identified using bioinformatic approaches as potentially producing secondary metabolites and the actual number of chemically characterized secondary metabolites produced by any given microorganism. Such gene clusters are generally considered as “silent”, meaning that they are not expressed under laboratory conditions. Triggering expression of these “silent” clusters could result in unlocking the chemical diversity they control, allowing the discovery of novel molecules of both medical and biotechnological interest. Therefore, both genetic and cultivation-based techniques have been developed aimed at stimulating expression of these “silent” genes. The principles behind the cultivation based approaches have been conceptualized in the “one strain many compounds” (OSMAC) framework, which underlines how a single strain can produce different molecules when grown under different environmental conditions. Parameters such as, nutrient content, temperature, and rate of aeration can be easily changed, altering the global physiology of a microbial strain and in turn significantly affecting its secondary metabolism. As a direct extension of such approaches, co-cultivation strategies and the addition of chemical elicitors have also been used as cues to activate “silent” clusters. In this review, we aim to provide a focused and comprehensive overview of these strategies as they pertain to marine microbes. Moreover, we underline how changes in some parameters which have provided important results in terrestrial microbes, but which have rarely been considered in marine microorganisms, may represent additional strategies to awaken “silent” gene clusters in marine microbes. Unfortunately, the empirical nature of the OSMAC approach forces scientists to perform extensive laboratory experiments. Nevertheless, we believe that some computation and experimental based techniques which are used in other disciplines, and which we discuss; could be effectively employed to help streamline the OSMAC based approaches. We believe that natural products discovery in marine microorganisms would be greatly aided through the integration of basic microbiological approaches, computational methods, and technological innovations, thereby helping unearth much of the as yet untapped potential of these microorganisms.

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“…Up to now this red-coloured pigment is sometimes used as a food colourant under the general E number E161e but it is not yet approved for use as a food additive in the EU or the USA [24,27]. ViX has demonstrated strong radical scavenging activity, valid inhibition of lipid peroxidation and red blood cell hemolysis, anti-proliferative, anti-inflammatory and proapoptotic activity against human cancer cell lines in vitro, which indicated that this pigment has great potential to be widely applied in healthcare and medical products [28,29].…”

Section: Carotenoids Of Eustigmatophyceaementioning

confidence: 99%

Current bioeconomical interest in stramenopilic Eustigmatophyceae: a review

Stoyneva-Gärtner

Uzunov

Gärtner

et al. 2019

Biotechnology & Biotechnological Equipment

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Today's global problems and challenges have given rise to a new field of interestbioeconomics. It is strongly related to phycoprospecting, or searching for specific algal strains of commercial importance. There has been growing interest in the small algal class Eustigmatophyceae in recent years. These microscopic stramenopilic algae, which have all the advantages of microalgal cultivation, have proved to be promising commercial sources of valuable compounds (e.g. carotenoids, unsaturated fatty acids, amino acids) in aquaculture, agriculture, biofuels production, medicine, pharmaceutics, cosmetics, wastewater treatment, environmental control, etc. The present review shows the main genera and strains of commercial importance, outlines their main fields of application and some gaps in our knowledge in this aspect. Today, the great promising bioeconomical potential of these algae has generally been recognized, but in the present state of its infancy, it is far from being fully exploited.

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Optimum Production Conditions, Purification, Identification, and Antioxidant Activity of Violaxanthin from Microalga Eustigmatos cf. polyphem (Eustigmatophyceae)

Cited by 46 publications

References 34 publications

Enhanced Light-Induced Biosynthesis of Fatty Acids Suitable for Biodiesel Production by the Yellow-Green Alga Eustigmatos magnus

Enhanced Light-Induced Biosynthesis of Fatty Acids Suitable for Biodiesel Production by the Yellow-Green Alga Eustigmatos magnus

Extending the “One Strain Many Compounds” (OSMAC) Principle to Marine Microorganisms

Current bioeconomical interest in stramenopilic Eustigmatophyceae: a review

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