Phytoremediation of Pb in the sediment of a mangrove ecosystem

Paz-Alberto, Annie Melinda; Celestino, A. B.; Sigua, Gilbert C.

doi:10.1007/s11368-013-0752-9

Cited by 19 publications

(4 citation statements)

References 26 publications

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“…The mangrove ecosystem provides herbal medicine and food for human consumption. However, unfortunately, mangrove plants, including R. mucronata are able to absorb and accumulate heavy metals, depending on the plant species, age and exposure time [30]. Heavy metals, including As, Cd, and Pb, were detected in tea leaves and tea infusions collected from different countries, but the levels were still below the WHO (World Health Organization) limit for herbal medicines (2007).…”

Section: Introductionmentioning

confidence: 99%

α-Glucosidase Inhibitory Activity of Tea and Kombucha from Rhizophora mucronata Leaves

Puspitasari,

Tuenter,

Breynaert

et al. 2024

Beverages

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A decoction of Rhizophora mucronata Lam. mangrove bark is used as an antidiabetic treatment in Asia. Kombucha tea is a fermented beverage, which is also claimed to be antidiabetic. In this work, the potency of R. mucronata leaves as α-glucosidase inhibitor was studied to assess whether it could be a suitable alternative to the use of R. mucronata bark. α-glucosidase inhibitory activities were determined for three extracts prepared from R. mucronata leaves, being the unfermented tea of R. mucronata leaves, the fermented kombucha tea and an 80% methanolic extract of the residual R. mucronata leaves. Flavonoid glycosides were identified in tea powder, kombucha tea and in the crude methanolic extract. Both the unfermented tea and the kombucha tea after 7 days of fermentation inhibited α-glucosidase with IC50 values of 0.12 ± 0.02 mg/mL and 0.09 ± 0.04 mg/mL, respectively. The methanolic extract showed a stronger α-glucosidase inhibitory activity compared to the kombucha tea and tea powder with an IC50 value of 0.0435 ± 0.0007 mg/mL. Acarbose, used as a positive control, inhibited α-glucosidase with an IC50 value of 2.4 ± 0.2 mg/mL. It was found that the three types of preparations of R. mucronata all were potent α-glucosidase inhibitors.

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Section: Introductionmentioning

confidence: 99%

α-Glucosidase Inhibitory Activity of Tea and Kombucha from Rhizophora mucronata Leaves

Puspitasari,

Tuenter,

Breynaert

et al. 2024

Beverages

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“…Toxicity studies in mangroves have focused on the effects of trace metals (Cu, Cd, Hg, Mn, Pb, and Zn). Thus, some studies are focusing on the use of mangrove trees as phytoremediators [23][24][25]. Under controlled conditions, the effect of trace pollutants on mangrove plants reveals that photosynthesis, growth, and biomass are reduced, while mortality increases [26].…”

Section: Introductionmentioning

confidence: 99%

Impact of Particulate Matter (PM10 and PM2.5) from a Thermoelectric Power Plant on Morpho-Functional Traits of Rhizophora mangle L. Leaves

Ayala-Cortés,

Barrera-Huertas,

Sedeño-Díaz

et al. 2023

Forests

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A conventional thermoelectric plant (TP) in the sandy bar of the Tampamachoco Lagoon (Gulf of Mexico slope) emits particulate matter (PM) transporting trace metals that affect a mangrove forest. Wind transports the emission plume from north to south in the northerly wind season (NWS); the dry season (DS) showed calm periods. We analyzed whether PM2.5 and PM10 emissions from the TP and their trace metals impact Rhizophora mangle leaves. The experimental design included three sampling sites along the main lagoon axis (north to south) during the NWS and DS. Mangrove leaves were collected; PM was obtained with a cascade impactor and trace elements were analyzed by atomic absorption spectrophotometry. Leaves were measured and tested for metal and chlorophyll content, and for metal detection with SEM-EDX. Calm periods in the DS promote high atmospheric PM concentrations. Wet deposition in the NWS caused the highest trace metal deposition on mangrove leaves. A north-to-south gradient was identified on the mangrove forest, being the south site of the lagoon where lower chlorophyll and leaf area, higher stomatal width and density, and higher Cd concentrations were recorded. The morpho-physiological modifications observed on mangrove leaves affect functions such as photosynthesis and gas exchange.

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“…In addition to various unfavorable conditions, the soil environment is also subject to anthropogenic alterations. The severest of such alterations is the introduction of persistent toxics such as heavy metals [1][2].…”

Section: Introductionmentioning

confidence: 99%

“…Phytoremediation is an emerging green technology that employs the use of higher plants for the cleanup of contaminated soils [1]. The use of plants to extract toxic metals from contaminated soils has emerged as a cost-effective, environmentfriendly clean up alternative [2][3][4][5]. Since plant cultivation and harvesting are relatively inexpensive processes as compared to traditional engineering practices that rely on intensive soil manipulation, phytoremediation may provide an attractive alternative for the cleanup of heavy metal contaminated soils.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Cleanup of Heavy Metal Polluted Landfill Soils and Improving Soil Microbial Activity Using Green Technology with Ferrous Sulfate

Sigua¹,

Celestino²,

Alberto³

et al. 2016

IJEP

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Landfills have led to some of the most intense battles over pollution that has ever been seen. With the population skyrocketing worldwide, these landfills will only become more of a public issue as time goes on. Heavy metals from several sources especially in landfills are an increasingly urgent problem because of its contribution to environmental deterioration and intensive degradation of soil microbial biodiversity. Despite the arguments over landfills in general, few or no effort was undertaken to clean up contamination of heavy metals in abandoned landfills. In our study new methods were proposed using a green technology or phytoremediation with ferrous sulfate in enhancing cleanup of heavy metal polluted landfill soils. Composite soil samples were collected near an open abandoned dump site in Cabanatuan City, Nueva Ecija, Philippines. Three rates of sulfur: 0, 40 and 80 mmol kg -1 as ferrous sulfate (26% S) was thoroughly mixed with the soil. Four healthy seedlings of mustard (Brassica juncea, L) were transplanted to each pot. Soil pH showed a decreasing trend for soils treated with 0 and 80 mmol kg -1 of sulfur (S) after 15 days (8.12 to 7.38) and after 25 days (8.56 to 7.78). Application of ferrous sulfate significantly enhanced microbial activities in contaminated soils. Average respiration rate in soil with 0 mmol kg -1 S was about 2.0 mg kg -1 CO 2 -C compared with 19.0 mg kg -1 CO 2 -C for soils amended with 80 mmol S kg -1 . Although dry matter yield and uptake of heavy metals by mustard were somewhat variable with S application, solubility of copper (Cu), zinc (Zn) and manganese (Mn) in soils was significantly (p≤0.001) increased with S application. Our study has demonstrated the beneficial outcome of green technology in combination with ferrous sulfate in cleaning up heavy metals contamination in landfills and at the same time improving soil microbial biomass following phytoremediation.

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Phytoremediation of Pb in the sediment of a mangrove ecosystem

Cited by 19 publications

References 26 publications

α-Glucosidase Inhibitory Activity of Tea and Kombucha from Rhizophora mucronata Leaves

α-Glucosidase Inhibitory Activity of Tea and Kombucha from Rhizophora mucronata Leaves

Impact of Particulate Matter (PM10 and PM2.5) from a Thermoelectric Power Plant on Morpho-Functional Traits of Rhizophora mangle L. Leaves

Enhancing Cleanup of Heavy Metal Polluted Landfill Soils and Improving Soil Microbial Activity Using Green Technology with Ferrous Sulfate

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