Results 11 to 20 of about 1,717 (164)

Development and validation of reliable astaxanthin quantification from natural sources.

PLoS ONE, 2022
Astaxanthin derived from natural sources occurs in the form of various esters and stereomers, which complicates its quantitative and qualitative analysis.
Inga K Koopmann, Annemarie Kramer, Antje Labes   +2 more
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In Vitro Bioactivity of Astaxanthin and Peptides from Hydrolisates of Shrimp (Parapenaeus longirostris) By-Products: From the Extraction Process to Biological Effect Evaluation, as Pilot Actions for the Strategy “From Waste to Profit”

Marine Drugs, 2021
Non-edible parts of crustaceans could be a rich source of valuable bioactive compounds such as the carotenoid astaxanthin and peptides, which have well-recognized beneficial effects.
Concetta Maria Messina, Simona Manuguerra, Rosaria Arena, Giuseppe Renda, Giovanna Ficano, Mariano Randazzo, Stefano Fricano, Saloua Sadok, Andrea Santulli   +8 more
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Pulsed Electric Fields (PEF) and Accelerated Solvent Extraction (ASE) for Valorization of Red (Aristeus antennatus) and Camarote (Melicertus kerathurus) Shrimp Side Streams: Antioxidant and HPLC Evaluation of the Carotenoid Astaxanthin Recovery

Antioxidants, 2023
Shrimp side streams represent an important natural source of astaxanthin. Optimization of the astaxanthin extraction process from shrimp side streams is of great importance for the valorization of crustacean side streams and the development of ...
Ana Cristina De Aguiar Saldanha Pinheiro, Francisco J. Martí-Quijal, Francisco J. Barba, Ana M. Benítez-González, Antonio J. Meléndez-Martínez, Juan Manuel Castagnini, Silvia Tappi, Pietro Rocculi   +7 more
doaj   +1 more source

A Novel Bifunctional Wax Ester Synthase Involved in Early Triacylglycerol Accumulation in Unicellular Green Microalga Haematococcus pluvialis Under High Light Stress

Frontiers in Bioengineering and Biotechnology, 2022
The bulk of neutral lipids, including astaxanthin esters and triacylglycerols (TAGs), are accumulated in the green microalga Haematococcus pluvialis under high light (HL) stress. In this study, a novel bifunctional wax ester synthase (WS) gene was cloned
Haiyan Ma, Jie Zheng, Jie Zheng, Yanhua Li, Liang Zhao, Song Zou, Song Zou, Qiang Hu, Qiang Hu, Qiang Hu, Qiang Hu, Qiang Hu, Danxiang Han, Danxiang Han   +13 more
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E/Z isomerization of astaxanthin and its monoesters in vitro under the exposure to light or heat and in overilluminated Haematococcus pluvialis cells

Bioresources and Bioprocessing, 2021
Thermo- and photoisomerization of astaxanthin was investigated in a model system (solutions in methanol and chloroform), and the dynamics of astaxanthin isomers and esters content was analyzed in Haematococcus pluvialis green algal cells exposed to ...
Yauhen V. Viazau, Ruslan G. Goncharik, Irina S. Kulikova, Evgeny A. Kulikov, Raif G. Vasilov, Alla A. Selishcheva   +5 more
doaj   +1 more source

Engineering a Plant-Derived Astaxanthin Synthetic Pathway Into Nicotiana benthamiana

Frontiers in Plant Science, 2022
Carotenoids have been shown to be essential for human nutrition. Consumption of carotenoid-rich fruits and vegetables can reduce the risk of many diseases.
Quinton M. Allen, Vicente J. Febres, Bala Rathinasabapathi, Bala Rathinasabapathi, José X. Chaparro   +4 more
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Pigment signatures of algal communities and their implications for glacier surface darkening

Scientific Reports, 2022
Blooms of pigmented algae darken the surface of glaciers and ice sheets, thereby enhancing solar energy absorption and amplifying ice and snow melt. The impacts of algal pigment and community composition on surface darkening are still poorly understood ...
Laura Halbach, Lou-Anne Chevrollier, Eva L. Doting, Joseph M. Cook, Marie B. Jensen, Liane G. Benning, James A. Bradley, Martin Hansen, Lars C. Lund-Hansen, Stiig Markager, Brian K. Sorrell, Martyn Tranter, Christopher B. Trivedi, Matthias Winkel, Alexandre M. Anesio   +14 more
doaj   +1 more source

Astaxanthin Extract from Haematococcus pluvialis and Its Fractions of Astaxanthin Mono- and Diesters Obtained by CCC Show Differential Antioxidant and Cytoprotective Effects on Naïve-Mouse Spleen Cells

Antioxidants, 2023
Carotenoids are the most abundant lipid-soluble phytochemicals and are used as dietary supplements to protect against diseases caused by oxidative stress.
Zuzana Jurčacková, Denisa Ciglanová, Dagmar Mudroňová, Lenka Tumová, Daniela Bárcenas-Pérez, Jiří Kopecký, Jana Koščová, José Cheel, Gabriela Hrčková   +8 more
doaj   +1 more source

Diversity and Content of Carotenoids and Other Pigments in the Transition from the Green to the Red Stage of Haematococcus pluvialis Microalgae Identified by HPLC-DAD and LC-QTOF-MS

Plants, 2022
H. pluvialis is a unicellular freshwater alga containing many bioactive compounds, especially carotenoids, which are the strongest antioxidants among the pigments. This study evaluates the composition and content of carotenoids and other pigments in both
Veno Jaša Grujić, Biljana Todorović, Roman Kranvogl, Terezija Ciringer, Jana Ambrožič-Dolinšek   +4 more
doaj   +1 more source

Astaxanthin from Haematococcus pluvialis Prevents Oxidative Stress on Human Endothelial Cells without Toxicity

Marine Drugs, 2015
Astaxanthin, a powerful antioxidant, is a good candidate for the prevention of intracellular oxidative stress. The aim of the study was to compare the antioxidant activity of astaxanthin present in two natural extracts from Haematococcus pluvialis, a ...
Philippe Régnier, Jorge Bastias, Violeta Rodriguez-Ruiz, Noelia Caballero-Casero, Carmen Caballo, Dolores Sicilia, Axelle Fuentes, Murielle Maire, Michel Crepin, Didier Letourneur, Virginie Gueguen, Soledad Rubio, Graciela Pavon-Djavid   +12 more
doaj   +1 more source