Chlorophylls as Natural Bioactive Compounds Existing in Food By-Products: A Critical Review

Ebrahimi, Pouneh; Shokramraji, Zahra; Mihaylova, Dasha; Lante, Anna

doi:10.3390/plants12071533

Cited by 59 publications

(20 citation statements)

References 80 publications

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“…The betel leaf's rich concentration of chlorophyll a and chlorophyll b accounts for its dark-green hue. While chlorophyll b is green-yellow, chlorophyll a is blue-green [30] . Table 1 shows that the highest total chlorophyll value of 66.25 mg/ml was observed at 20 °C, 20 min, and a solid to solvent ratio of 10, whereas the lowest value of chlorophyll content (30.09) was found at 20 min, 40 °C, and 30 solids: solvent ratio.…”

Section: Resultsmentioning

confidence: 99%

Ultrasound assisted extraction of phytochemicals from Piper betel L.

Singh,

Pandey,

Singh

et al. 2024

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 99%

Ultrasound assisted extraction of phytochemicals from Piper betel L.

Singh,

Pandey,

Singh

et al. 2024

Ultrasonics Sonochemistry

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“…Chlorophyll has a wide range of nutritional and health-promoting benefits, as a result of it being rich in vitamins and minerals, as well as exhibiting antioxidant and anti-inflammatory properties. 19 The chlorophyll content of the leaves of P. afra remained relatively constant in both treatments, across all three harvests (p>0.05). This suggests that the plant may offer health-promoting benefits despite being exposed to elevated CO 2 concentrations.…”

Section: Weight and Chlorophyll Contentmentioning

confidence: 88%

The effect of elevated carbon dioxide on the medicinal properties of Portulacaria afra

Basson,

Van Vuuren,

Risenga

2024

S. Afr. J. Sci.

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There is a global concern that rising atmospheric CO2 concentrations may impact the medicinal or nutritional properties of medicinal plants. Portulacaria afra is a South African medicinal plant that is used by traditional healers to treat various skin conditions. The aim of this study was to determine whether elevated CO2 concentrations would affect the medicinal properties of the leaves of P. afra. This was achieved by comparing the phytochemical presence, antioxidant and antimicrobial activity of the leaves of P. afra which were exposed to ambient (420 ppm) and elevated (600 ppm) CO2 concentrations of plants grown in greenhouse conditions. The results revealed that leaf samples that were exposed to elevated CO2 concentrations exhibited a significant increase in flavonoid presence, compared to the control group. The antioxidant activity of the leaves of P. afra (DPPH activity) remained mostly unchanged in the samples that were exposed to elevated CO2 concentrations. The antimicrobial activity efficacy against Cutibacterium acnes increased with increasing global atmospheric CO2 concentration. These findings suggest that P. afra is a resilient medicinal plant and that its leaves may continue to provide relief against certain ailments, despite rising atmospheric CO2 concentrations.

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“…This sort of molecule possesses antioxidant activity due to its ability to scavenge free radicals, donate hydrogen atoms or electrons, or bind metal cations. Another reason for increase in antioxidant property of broccoli after impregnation can also be attributed to the elevated levels of chlorophyll, which acts as an antioxidant 47 . Chlorophylls and their derivatives have shown important health-promoting functions, showing anti-mutagenic, anti-cancer, and anti-inflammatory activities.…”

Section: Discussionmentioning

confidence: 99%

Enhancing phytochemical parameters in broccoli through vacuum impregnation and their prediction with comparative ANN and RSM models

Wahid,

Giri,

Kate

et al. 2023

Sci Rep

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Amidst increasing demand for nutritious foods, the quest for effective methods to enhance health-promoting attributes has intensified. Vacuum impregnation (VI) is a promising technique to augment produce properties while minimizing impacts on biochemical attributes. In light of broccoli’s growing popularity driven by its nutritional benefits, this study explores the impact of VI using ascorbic acid and calcium chloride as impregnation agents on enhancing its phytochemical properties. Response surface methodology (RSM) was used for optimization of the vacuum impregnation process with Vacuum pressure (0.6, 0.4, 0.2 bar), vacuum time (3, 7, 11 min), restoration time (5, 10, 15 min), and concentrations (0.5, 1.0, 1.5%) as independent parameters. The influence of these process parameters on six targeted responses viz. total phenolic content (TPC), total flavonoid content (TFC), ascorbic acid content (AAC), total chlorophyll content (TCC), free radical scavenging activity (FRSA), and carotenoid content (CC) were analysed. Levenberg–Marquardt back propagated neural network (LMB-ANN) was used to model the impregnation process. Multiple response optimization of the vacuum impregnation process indicated an optimum condition of 0.2 bar vacuum pressure, 11 min of vacuum time, 12 min of restoration time, and 1.5% concentration of solution for vacuum impregnation of broccoli. The values of TPC, TFC, AAC, TCC, FRSA, and CC obtained at optimized conditions were 291.20 mg GAE/100 g, 11.29 mg QE/100 g, 350.81 mg/100 g, 1.21 mg/100 g, 79.77 mg, and 8.51 mg, respectively. The prediction models obtained through ANN was found suitable for predicting the responses with less standard errors and higher R2 value as compared to RSM models. Instrumental characterization (FTIR, XRD and SEM analysis) of untreated and treated samples were done to see the effect of impregnation on microstructural and morphological changes in broccoli. The results showed enhancement in the TPC, TFC, AAC, TCC, FRSA, and CC values of broccoli florets with impregnation. The FTIR and XRD analysis also supported the results.

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Chlorophylls as Natural Bioactive Compounds Existing in Food By-Products: A Critical Review

Cited by 59 publications

References 80 publications

Ultrasound assisted extraction of phytochemicals from Piper betel L.

Ultrasound assisted extraction of phytochemicals from Piper betel L.

The effect of elevated carbon dioxide on the medicinal properties of Portulacaria afra

Enhancing phytochemical parameters in broccoli through vacuum impregnation and their prediction with comparative ANN and RSM models

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