Effect of Chlorophyll and Anthocyanin on the Secondary Bonds of Poly Vinyl Chloride (PVC)

Ahmed, Jaleel Kareem

doi:10.11648/j.ijmsa.s.2015040201.15

Cited by 12 publications

(9 citation statements)

References 7 publications

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“…Flavonoids have several subgroups, which include flavones, flavonols, flavanones, flavanonols, flavanols, and anthocyanins. Specifically, the FT‐IR spectra of extracted dyes in this study were well matched with FT‐IR spectra of anthocyanin shown in the literature . PMF, RTF, and JFL natural dye extracts exhibited all the characteristic peaks of the anthocyanin pigment, and they showed similar spectra.…”

Section: Resultssupporting

confidence: 83%

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

et al. 2019

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Summary Natural dyes extracted from fruits, vegetables, flowers, and leaves are considered as promising alternative sensitizers to replace synthetic dyes for dye‐sensitized solar cells (DSSCs). Generally, solar activity of natural dyes stem from anthocyanin pigment. Carbonyl, carboxyl, and hydroxyl groups present in the anthocyanin molecule improve the adsorption ability of dye on TiO2 and therefore facilitate charge transfer. Here, for the first time, novel natural dyes extracted from St. Lucie cherry, yellow jasmine, and madder berries are reported to act as sensitizer in DSSCs. These novel natural dye extracts are prepared by dissolving related fruits in ethanol. The ingredient of the dyes is identified by FT‐IR spectroscopy. Accordingly, FT‐IR spectrum reveals that novel natural dye extracts exhibit all the characteristic peaks of anthocyanin pigment. Specifically, St. Lucie cherry consists of more distinct carbonyl group than other sources. Also, photoanodes composed of three TiO2 layers are prepared by using a spin‐coating method. Then, they are immersed into natural dyes and analyzed by conducting UV‐Vis spectroscopy. Compared with bare TiO2, natural dye–loaded photoanodes demonstrate far higher absorption ability in the visible region. After fabrication of devices with different novel natural dye sensitizers, current‐voltage characteristics and electrochemical impedance spectroscopy measurements are performed. The best power conversion efficiency (PCE) of 0.19% is obtained by sensitization of St. Lucie cherry with an open‐circuit voltage (Voc) of 0.56 V, short‐circuit current density (Jsc) of 181 μA cm−2, and fill factor (FF) of 0.55. Furthermore, St. Lucie cherry–sensitized devices show the lowest charge transfer and highest recombination resistances. This result can be attributed to the obvious carbonyl group exhibited by St. Lucie cherry.

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Section: Resultssupporting

confidence: 83%

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

et al. 2019

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“…Several major peaks at 3330, 2925, 2850, 1105, 1040 was observed from transmission spectrum. As shown in Figure 4, FTIR spectrum of the total pigments indicates the presence of high density chlorophyll pigment [16].…”

Section: Characterization Of Pigmentsmentioning

confidence: 94%

Auxenochlorella protothecoides SC3'ten Ekstre Edilen Pigmentlerin Pseudomonas aeruginosa'ya karşı Antimikrobiyal Aktivitesinin Değerlendirilmesi

Arslan

Çobanoğlu

Yazıcı

2021

Türk Doğa Ve Fen Dergisi

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Nowadays, natural microbial pigments are emerging as potential candidate therapeutic agents that can be used in antibiotic resistance. In this paper, we report the antimicrobial activity of green algae pigments. Green algae SC3 isolate was isolated from soil in Erzurum. Pigments extracted by methanol: dimethyl sulfoxide solvents were partially characterized by Thin Layer Chromatography (TLC), UV-Absorbance, and Fourier-transform infrared spectroscopy (FTIR). The antimicrobial activity of pigments was determined with agar well diffusion and microbroth assays against Pseudomonas aeruginosa (ATCC 27853 and clinic isolate), Staphylococcus aureus (ATCC 25923) and Escherichia coli (ATCC 25922). To identify green algae, total DNA was isolated and both 18S rRNA and 16S rRNA for the chloroplast genome were amplified using universal primers. Thus, this alga was identified as Auxenochlorella protothecoides and submitted to Genbank (Accession number: MW139225 and MW063613). According to our results, the best antimicrobial activity was recorded against P. aeruginosa. Our results show for the first time the antimicrobial activity of the total pigments from A. protothecoides green algae.

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“…The broad peak at 3380 cm À1 was because of sugar vibrations and phenol O-H groups (Ahmed et al, 2013;Vankar and Shukla, 2011) which confirms the presence of phenols and aromatic group which tied H as an indicator of A and B rings of the anthocyanins pigment (aglycon) (Saati, 2015). The absorbance at 2,120 cm À1 and 2,000 cm À1 was attributed to C:C stretching vibrations (Sinha et al, 2012) while 1,700 cm À1 to C = O and 1,610 cm À1 to C = C groups (Ahmed et al, 2014). Further, the peaks observed at 1,050, 1,130, 1,220 and 1,360 cm À1 corresponds to the C-O-C bonds in the saccharide ring (Zhang et al, 2013).…”

Section: Fourier Transform Infrared Spectroscopy Analysis Of Sohiong Anthocyanins Concentratementioning

confidence: 96%

Production and optimization of anthocyanin-rich food colorant extracted fromprunus nepalensis L.(Sohiong)

Swer

Chauhan

Paul

et al. 2018

PRT

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Purpose An upsurge in health and environmental concerns over the use of synthetic color has made the development of color from cheap and easily available natural sources, namely, plants, animals, micro-organisms and algae as indispensable. This study aims to extract anthocyanins, an important natural plant pigments, from Sohiong (Prunus nepalensis). This study demonstrated that Sohiong have high anthocyanins content and antioxidant property, indicating an immense potential for the fruit producers and food processors. Design/methodology/approach Response surface methodology was used to optimize the conditions for extraction of anthocyanins from Sohiong using conventional solvent extraction. Findings The optimum conditions for extraction were found to be 36.75°C temperature, 60.32 per cent ethanol concentration and 2.39 per cent citric acid concentration with recovery of 45 per cent total extract yield, 858.84 mg C3G/100g DM anthocyanin content and 824.91 mg GAE/100g DM phenolic content with in-vitro antioxidant activity of 31.40 mmol AEAC/100g DM for FRAP and 84.66 per cent DPPH scavenging capacity (20mg/ml). The F-values and high values of adjusted determination coefficient for each response imply high level of significance of the fitted models. Practical implications Extracted color can be used in food and pharmaceutical industries. Social implications Pigment extracted is from a natural source and possesses high antioxidative activity and potential health benefits. With increasing demand for natural colors and other additives, there is a wide range of applications of the pigment as natural colorant in the food and pharmaceutical sector. Originality/value Selected plant source, i.e. Sohiong, was not used earlier by any researcher to extract anthocyanins for potential applications as food colorant.

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Effect of Chlorophyll and Anthocyanin on the Secondary Bonds of Poly Vinyl Chloride (PVC)

Cited by 12 publications

References 7 publications

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

St. Lucie cherry, yellow jasmine, and madder berries as novel natural sensitizers for dye‐sensitized solar cells

Auxenochlorella protothecoides SC3'ten Ekstre Edilen Pigmentlerin Pseudomonas aeruginosa'ya karşı Antimikrobiyal Aktivitesinin Değerlendirilmesi

Production and optimization of anthocyanin-rich food colorant extracted fromprunus nepalensis L.(Sohiong)

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