Transparent quasi-solid state dye-sensitized solar cells sensitized with naturally derived pigment extracted from red seaweed

Rapsomanikis, Andreas; Sygkridou, Dimitra; Voutsinas, Evangelos; Σταθάτος, Ηλίας

doi:10.1016/j.cap.2016.03.018

Cited by 16 publications

(3 citation statements)

References 25 publications

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“…These pigments capture blue light, present at greater marine depths. Phycocyanin and phycoerythrin mask chlorophyll and carotenoids, resulting in red algae's color, which varies from red to violet [19].…”

Section: Nutritional Compositionmentioning

confidence: 99%

Nutritional Composition and Bioactive Compounds of Red Seaweed: A Mini-Review

Gamero-Vega¹,

Palacios-Palacios²,

Quitral³

2020

JFNR

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This review describes the nutritional composition and polyphenol content of red algae. The nutrient composition of red algae is highly varied between different genera. Red algae are low-calorie foods, given their high concentration of protein and dietary fiber. They also have higher protein content than brown and green algae, with average values as high as 18.8 g/100 g. The digestibility of red algae proteins is moderate, however, due to their high level of dietary fiber and polyphenols. They have low fat content, but the quality of their fatty acids is very high. They contain essential fatty acids, also oleic acid, arachidonic acid, EPA, and DHA, which are considered beneficial to health. The omega-6/omega-3 ratio is very low (median = 0.8) which is very beneficial for human health. Red algae also have very high amounts of dietary fiber-higher than in terrestrial vegetables-and are especially rich in soluble fiber. It also contains minerals, in high concentrations; among those sodium and iodine stand out. Their sodium/potassium ratio is low, so consumption of red algae would not imply risk for people with hypertension or cardiovascular diseases. The polyphenol content in red algae is very high, but is lower than brown algae.

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Section: Nutritional Compositionmentioning

confidence: 99%

Nutritional Composition and Bioactive Compounds of Red Seaweed: A Mini-Review

Gamero-Vega¹,

Palacios-Palacios²,

Quitral³

2020

JFNR

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“…The study related to red algae is mainly focused on polysaccharides and their bioactivities (Souza et al 2012), while the report about natural antioxidant compounds in this red algae is few. Natural pigments are slightly polar compounds in chemical structure, which are easily removed by using the method of organic solvent extraction (Rapsomanikis et al 2016). In this study, a solvent reflux method has been developed for the extraction of the pigments and other antioxidant compounds from the red algae G. lemaneiformis, and the optimum extraction condition is obtained by an L9(3)4 orthogonal experimental array.…”

Section: Introductionmentioning

confidence: 99%

Optimization of decolorization process in agar production from Gracilaria lemaneiformis and evaluation of antioxidant activities of the extract rich in natural pigments

Yuan

Duan

et al. 2017

3 Biotech

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is mainly used as a raw material source for agar industry, and its extract is rich in natural pigments with antioxidant activities. In this study, a solvent reflux extraction method for decolorization of has been developed in agar production. The extraction conditions were optimized as follows: solvent-to-material ratio, 50:1; ethanol concentration, 70%; number of extractions, 3; extraction time, 0.5 h, under which the total antioxidant yield of the extract reached 2.89 ± 0.88 mg/g dried seaweeds. Their IC values of DPPH radical scavenging activity, hydroxyl radical scavenging activity and superoxide anion scavenging activity were 21.91 ± 1.8 mg/L, 40.59 ± 1.5 mg/L and 160.87 ± 2.8 mg/L, respectively. Further isolation and spectroscopic analysis of natural pigments suggested the strong antioxidant capacities were attributed to chlorophyll derivatives. The results indicate that the decolorization process was able to improve the agar quality, and the extract containing lots of natural pigments had antioxidant activities which may be used in functional food and cosmetics.

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“…As IL is considered a "green" solvent, it has also been applied in the DSSCs with natural dyes as sensitizer [23]. IL is often used in devices as electrolyte, but fabrication of devices using liquid electrolytes (LEs) is difficult.…”

Section: Progress and Developments In Ionic Liquidsmentioning

confidence: 99%

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Yusuf¹,

Yahya²,

Arof³

2017

Progress and Developments in Ionic Liquids

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Ionic liquids (ILs) are molten salts at ambient temperature and consist of poorly coordinating cations and anions. They have good electrical conductivity with a wide voltage window and high thermal stability, but negligible vapor pressure. ILs can enhance ionic conductivity when added to polymer electrolytes. Conductivity enhancement is due to the additional ions supplied by the IL, the plasticizing nature of the IL and the low viscosity that facilitates ion mobility. The plasticizing nature of ILs softens the polymer chain giving rise to easier polymer segmental motion. Increase in polymer segmental motion implies that IL can increase amorphousness of a polymer electrolyte (PE). This article discusses the involvement of ionic liquid as electrolytes in selected devices, namely dye sensitized photovoltaics, batteries, fuel cells and supercapacitors.

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Transparent quasi-solid state dye-sensitized solar cells sensitized with naturally derived pigment extracted from red seaweed

Cited by 16 publications

References 25 publications

Nutritional Composition and Bioactive Compounds of Red Seaweed: A Mini-Review

Nutritional Composition and Bioactive Compounds of Red Seaweed: A Mini-Review

Optimization of decolorization process in agar production from Gracilaria lemaneiformis and evaluation of antioxidant activities of the extract rich in natural pigments

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

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