Extraction and degradation of chlorophyll a and b from Alternanthera sessilis

Jinasena, Asanthi; Amarasinghe, Adus; Amarasinghe, Bmwpk; Prashantha, M.A.B.

doi:10.4038/jnsfsr.v44i1.7977

Cited by 14 publications

(9 citation statements)

References 33 publications

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“…The absorption spectra acquired from the C . schoenanthus leaves in this study was similar to that of chlorophyll (Figure ) …”

Section: Resultssupporting

confidence: 80%

“…Hence, as the polarity of the solvent decreased, it increased the solubility of the polar solvents. 37 In one study, Jinasena et al (2016) investigated the extraction of the organic dye molecules (chlorophyll) from Alternanthera sessilis under different temperatures. They noted that the natural dye molecules absorbance increases with increases of temperature.…”

Section: Effect Of Different Temperature Values On the Extraction Omentioning

confidence: 99%

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Performance of the dye‐sensitized solar cells fabricated using natural dyes from Ixora coccinea flowers and Cymbopogon schoenanthus leaves as sensitizers

2019

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Summary In this study, the chlorophyll and anthocyanin natural dyes were extracted from Cymbopogon schoenanthus leaves and Ixora coccinea flowers, respectively. Thereafter, these dyes were used as sensitizers in the TiO2‐based dye‐sensitized solar cells (DSSCs). Ten solvents were used for solubilizing the dyes. Amongst the 10 solvents, the ethanol showed the highest absorption spectra for the anthocyanin and chlorophyll molecules. Temperature significantly affected the yield of the natural dyes. It was seen that an optimal extraction temperature of 70°C and 80°C results to higher anthocyanin and chlorophyll yields, respectively. However, an extraction temperature above 70°C and 80°C has shown a sharply decrease in the anthocyanin and chlorophyll concentrations, respectively. Also, the solution of acidic extraction, especially with a pH value of 4, increased the dyes concentrations. As seen in the results, the chlorophyll‐sensitized DSSCs had 0.23% conversion efficiency (ƞ), short‐circuit current (Isc) of 0.9 mA/cm–2, open‐circuit voltage (Voc) of 0.51 V, and 49.13% fill factor (FF). Meanwhile, the anthocyanin‐sensitized DSSCs showed 0.16% ƞ, 0.4 mA/cm–2 Isc, 0.53 V Voc, and 75.93% FF.

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“…The absorption spectra acquired from the C . schoenanthus leaves in this study was similar to that of chlorophyll (Figure ) …”

Section: Resultssupporting

confidence: 80%

Section: Effect Of Different Temperature Values On the Extraction Omentioning

confidence: 99%

Performance of the dye‐sensitized solar cells fabricated using natural dyes from Ixora coccinea flowers and Cymbopogon schoenanthus leaves as sensitizers

2019

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“…A further increase in temperature over the optimum value was insignificant. The same observation was recorded in Reference [28]. The last parameter investigated was the mixing ratio.…”

Section: Main Effect Plotsupporting

confidence: 75%

Solvent Extraction Optimization of Chlorophyll Dye from Conocarpus Lancifolius Leaves

Jassim

2020

J. Eng. Technol. Sci.

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 Conocarpus lancifolius Leaves were examined as a potential source of chlorophyll dye. Optimization of extraction parameters is carried out using Taguchi experimental design.  The total chlorophyll yield is mostly dependent on extraction time, mixing ratio and temperature. There are large interactions between extraction parameters time, temperature and mixing ratio.  The quadratic model developed for chlorophyll extraction process had R2 of 97.54 %.

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“…has then been applied to calculate the chlorophyll contents. Also, it has been discussed by investigators that the turbidity in a solution can play a significant role in determination of chlorophyll content [14,30]. It has been suggested that for a clear solution absorbance at 750 nm should be near to zero and absorbance in the range of 510-550 nm should not be more than 10% of the major red peak absorbance [22] The absorbance values in the green and yellow region of the spectra have been observed to be less than 10% of the red peak absorbance.…”

Section: Rafas-2021mentioning

confidence: 99%

Aprotic and protic solvent for extraction of chlorophyll from various plants: Chemical characteristic and analysis

Chand

Kumar

Prasher

et al. 2022

J. Phys.: Conf. Ser.

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The extraction efficiencies of acetone (80%), ethanol, DMSO, and DMF for chlorophyll extraction from mango, pine, spinach, and hibiscus have been compared. Acetone (80%) has yielded highest amount of chlorophyll-a (chl-a) from pine and ethanol has yielded highest amount of chlorophyll-b (chl-b) from mango leaves. The chl-a/b ratio ranges between 2.481 - 3.794, showing insignificant effect of solvent polarity. The UV - Vis absorption spectra has shown changes with solvent polarity with the polar protic solvent having a broad peak around 664 nm. There has been an insignificant effect of the solvent polarity on extraction of chlorophylls from the selected plants. The ANOVA results have shown a statistically significant difference in chlorophyll extraction efficiencies of different solvents. The absorbance values in the spectral region between 500 - 550 nm has been found to be less than 10 % of the absorbance at 664 nm, indicating tracer amounts of pheophytins and chlorophyll by-products in the solution.

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Extraction and degradation of chlorophyll a and b from Alternanthera sessilis

Cited by 14 publications

References 33 publications

Performance of the dye‐sensitized solar cells fabricated using natural dyes from Ixora coccinea flowers and Cymbopogon schoenanthus leaves as sensitizers

Performance of the dye‐sensitized solar cells fabricated using natural dyes from Ixora coccinea flowers and Cymbopogon schoenanthus leaves as sensitizers

Solvent Extraction Optimization of Chlorophyll Dye from Conocarpus Lancifolius Leaves

Aprotic and protic solvent for extraction of chlorophyll from various plants: Chemical characteristic and analysis

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