Physicochemical characterization, elemental speciation and hydrogeochemical modeling of river and peloid sediments used for therapeutic uses

Muñoz, Margaret Suárez; Rodríguez, C.; Rudnikas, Alina Gelen; Rizo, Oscar Díaz; Martínez‐Santos, Miren; Ruiz‐Romera, Estilita; Castillo, Juan Reynerio Fagundo; Pérez‐Gramatges, Aurora; Martínez-Villegas, Nadia; Padilla, Dagoberto Blanco; Díaz, Rebeca Hernández; Hernández, Patricia González

doi:10.1016/j.clay.2014.11.029

Cited by 28 publications

(10 citation statements)

References 28 publications

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“…As the increasing usage of sapropels significantly contributes to resource depletion, the need to characterize their microbiota rises out of necessity to replicate their natural formation process 10 and to expand our knowledge on microbial diversification in energetically- constrained analogue environments. Although Romanian hypersaline sapropels have been used as cosmetics and medical peloids since the 19 th century to date 11 , their microbiological characterization is lacking as the few extant studies only dealt with enzymatic activity measurements or culturable diversity 12 .…”

Section: Introductionmentioning

confidence: 99%

Hypersaline sapropels act as hotspots for microbial dark matter

Andrei

Baricz

Robeson

et al. 2017

Sci Rep

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Present-day terrestrial analogue sites are crucial ground truth proxies for studying life in geochemical conditions close to those assumed to be present on early Earth or inferred to exist on other celestial bodies (e.g. Mars, Europa). Although hypersaline sapropels are border-of-life habitats with moderate occurrence, their microbiological and physicochemical characterization lags behind. Here, we study the diversity of life under low water activity by describing the prokaryotic communities from two disparate hypersaline sapropels (Transylvanian Basin, Romania) in relation to geochemical milieu and pore water chemistry, while inferring their role in carbon cycling by matching taxa to known taxon-specific biogeochemical functions. The polyphasic approach combined deep coverage SSU rRNA gene amplicon sequencing and bioinformatics with RT-qPCR and physicochemical investigations. We found that sapropels developed an analogous elemental milieu and harbored prokaryotes affiliated with fifty-nine phyla, among which the most abundant were Proteobacteria, Bacteroidetes and Chloroflexi. Containing thirty-two candidate divisions and possibly undocumented prokaryotic lineages, the hypersaline sapropels were found to accommodate one of the most diverse and novel ecosystems reported to date and may contribute to completing the phylogenetic branching of the tree of life.

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Section: Introductionmentioning

confidence: 99%

Hypersaline sapropels act as hotspots for microbial dark matter

Andrei

Baricz

Robeson

et al. 2017

Sci Rep

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“…Suarez Munoz (Suarez et al, 2015) also reported that dried HA fraction stored at 4°C and maintained stable. FA fraction has commonly been frozen or freeze-dried and stored at -4 °C for future usage (Beer et al, 2003;Khanna et al, 2008;Dolmaa et al, 2011;Suarez et al, 2015;Meullemiestre et al, 2017). Studies suggest that all of the extracts are chemically stable and retain their biological activity for months in aqueous solutions and can be used for pharmaceuticals (Beer et al, 2002(Beer et al, , 2003Mirza et al, 2011a;Mirza et al, 2011b).…”

Section: Technical Extraction Methods For Sapropel Sediments Solid-limentioning

confidence: 93%

“…If the extracted fraction contains lipids and organic solvents were used in the extraction process, the obtained extract stored at 4°C was found to remain stable for several months (Shamia et al, 2017;Rasaee et al, 2018). Suarez Munoz (Suarez et al, 2015) also reported that dried HA fraction stored at 4°C and maintained stable. FA fraction has commonly been frozen or freeze-dried and stored at -4 °C for future usage (Beer et al, 2003;Khanna et al, 2008;Dolmaa et al, 2011;Suarez et al, 2015;Meullemiestre et al, 2017).…”

Section: Technical Extraction Methods For Sapropel Sediments Solid-limentioning

confidence: 99%

Freshwater Sapropel: Biologically Active Components and Methods of Extraction

Kļaviņa

Auce

Pavlovska

et al. 2020

PNS

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Previously, sapropel has been commonly used in agriculture, cosmetology and medicine in its raw form and there has been no generally accepted method or standard for realizing sapropel extract. However, for sapropel usage in medicine, balneology and pharmacy, it is essential to develop quality criteria for raw sapropel and its extracts. This review aims at discussing and summing up different techniques for extracting bioactive compounds from sapropel as well as the possibilities of creating quality criteria. This paper covers existing analytical techniques and methodologies; currently, there are few extraction methods using several extractants for obtaining bioactive components from raw sapropel. Different freshwater sapropel types have been described and characterized. Bioactive components in sapropel have been identified and explained. Humic acids and fulvic acids have been identified as the main substances and their extraction methods have been listed. Solid-liquid, ultrasound assisted and supercritical fluid extraction methods have been pointed out as the most suitable. Additionally, analysis and storage conditions of the extracts have been discussed. There have been found to be no commonly accepted standard methods for sapropel extraction, or for the analysis and characterization of the sapropel extracts. For pharmacological applications, a common approach for the extraction process of active substances from sapropel and the analysis procedures of the extracts need to be established. This review will help equip other researchers with the latest information on this topic.

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“…In general, the most important properties of sapropel are the following: high dispersity, good plasticity (colloid characteristics), thermal capacity, low heat transfer, absorption capacity, homogeneity, consistence, biostimulation, antioxidation, and antimicrobial characteristics (Schepetkin et al, 2002;Suárez Muñoz et al, 2015;Dçliòa et al, 2016).…”

Section: Structure and Characteristics Of Sapropelmentioning

confidence: 99%

Sapropel – Mining Characteristics and Potential Use in Medicine

Vanadziņš

Mārtiņsone

Kļaviņa

et al. 2022

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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Found in lakes, freshwater sapropel is a sediment with a fine structure containing more than 10% of organic matter as well as residues of aquatic organisms with a small content of inorganic components of biogenic origin and mixture of mineral ingredients. The mud was first used in medicine by ancient Greeks, and it gained more popularity together with development of balneology in Europe in the 19th century as a remedy for several diseases. The last century also brought wider popularity in its cosmetic use. Despite its wide usage, mechanisms behind its effects are not so clear yet. Broad but fragmented studies on the effects of sapropel are available, but few have used modern research methods. There is evidence suggesting that its positive health effects are linked to its thermal capacity, ability of penetration in tissues and biological activity of its components, e.g., humic substances. Evidence also suggests antimicrobial activity and positive effects on skin regeneration. This review aims at summarising available knowledge on the structure and composition of sapropel and its effects on the human body, as well as its potential for further evidence-based use in medicine and cosmetics.

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Physicochemical characterization, elemental speciation and hydrogeochemical modeling of river and peloid sediments used for therapeutic uses

Cited by 28 publications

References 28 publications

Hypersaline sapropels act as hotspots for microbial dark matter

Hypersaline sapropels act as hotspots for microbial dark matter

Freshwater Sapropel: Biologically Active Components and Methods of Extraction

Sapropel – Mining Characteristics and Potential Use in Medicine

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