Results 91 to 100 of about 972,596 (358)

Separation and quantification of pigments from natural phototrophic microbial populations [PDF]

open access: yesFEMS Microbiology Letters, 1985
A simple high-performance liquid chromatography (HPLC) method is described for the rapid (approx. 20 min) simultaneous separation and identification of the major chlorophylls and carotenoids from phytoplankton cells and phototrophic sulfur bacteria. Lyophilized samples were extracted with acetone in the dark at room temperature.
C.L.M. Steenbergen, H.J. Korthals
openaire   +3 more sources

Antibacterial hydrogel: The sniper of chronic wounds

open access: yesBMEMat, EarlyView.
The treatment of chronic wounds has always been an important challenge in the medical field. We focus on hydrogels not only because they provide a moist healing environment but also because compared with traditional dressings, they can effectively prevent and treat infections, reduce wound pain and scar formation.
Shengtai Bian   +6 more
wiley   +1 more source

Characterizing the purple Earth: Modelling the globally-integrated spectral variability of the Archean Earth

open access: yes, 2013
The ongoing searches for exoplanetary systems have revealed a wealth of planets with diverse physical properties. Planets even smaller than the Earth have already been detected, and the efforts of future missions are placed on the discovery, and perhaps ...
Gutiérrez-Navarro, A. M.   +6 more
core   +1 more source

Commercial Applications of Microalgae [PDF]

open access: yes, 2006
The first use of microalgae by humans dates back 2000 years to the Chinese, who used Nostoc to survive during famine. However, microalgal biotechnology only really began to develop in the middle of the last century.
Duran, Elie   +3 more
core   +3 more sources

Valorization of American Barrel-Shoot Wastes: Effect of Post Fermentative Addition and Readdition on Phenolic Composition and Chromatic Quality of Syrah Red Wines [PDF]

open access: yes, 2020
The influence of post fermentative addition of American barrel-shoot wastes on phenolic composition and chromatic quality of Syrah red wines has been evaluated as an environmentally sustainable alternative to the conventional winemaking for avoiding the ...
Baca Bocanegra, Berta   +3 more
core   +1 more source

Innovative transdermal drug delivery systems: Benefits, challenges, and emerging application

open access: yesBMEMat, EarlyView.
The graphical abstract illustrates the diverse nanostructures employed in transdermal drug delivery systems, highlighting their unique mechanisms to penetrate the intricate layers of skin. It provides a detailed representation of the skin's complex anatomy, emphasizing the challenges posed by its barrier properties.
Syed Waqas Ali Shah   +9 more
wiley   +1 more source

Spectral characterisation of red pigment in Italian-type dry-cured ham. Increasing lipophilicity druing processing and maturation [PDF]

open access: yes, 2003
Spectroscopic studies of Parma ham during processing revealed a gradual transformation of muscle myoglobin, initiated by salting and continuing during ageing.
Adamsen, Christina E.   +2 more
core  

Violacein, an indole-derived purple-colored natural pigment produced by Janthinobacterium lividum, inhibits the growth of head and neck carcinoma cell lines both in vitro and in vivo [PDF]

open access: yes, 2015
Violacein (VIO; 3-[1,2-dihydro-5-(5-hydroxy-1H-indol-3-yl)-2-oxo-3H-pyrrol-3-ylidene]-1,3-dihydro-2H-indol-2-one), an indole-derived purple-colored pigment, produced by a limited number of Gram-negative bacteria species, including Chromobacterium ...
Bei, Roberto   +12 more
core   +1 more source

Promising Prodiginins Biological Activities

open access: yesChemistry &Biodiversity, EarlyView.
ABSTRACT Prodiginins are a large family of at least 34 pyrrolic compounds, including the well‐studied red pigment prodigiosin. Prodiginins are produced by several microorganisms displaying broad biological activities, including antimicrobial, antiviral, antiparasitic, antiproliferative, and immunosuppressive activities.
María F. Ladetto   +6 more
wiley   +1 more source

Colour, health and wellbeing: the hidden qualities and properties of natural dyes [PDF]

open access: yes, 2013
This paper addresses the questions: Is it feasible that the chemicals present in the natural dyes of both plants and insects which in the past, man has exploited for their colour, could exhibit other properties?
Wells, Kate
core   +1 more source

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