Antimicrobial activity and FTIR characterization of lapachol derivatives against Staphylococcus aureus

Fernandes, Antônio Wilton Cavalcante; Santos, Victória Laysna dos Anjos; Araújo, Cleônia Roberta Melo; Araújo, Edigênia Cavalcante da Cruz; Costa, Mateus Matiuzzi da

doi:10.5897/ajmr2017.8432

Cited by 3 publications

(1 citation statement)

References 13 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of naphthoquinone group with C=O bond at the wavelength range of 1655-1635 cm -1 known to has its role as scavenger of superoxide radicles (Patel et al, 2007) which may benefit in the oxidation and breakdown of organic matter in wastewater treatment. The antibacterial activity was noticed with lapachol which is a natural naphthoquinone indicating the removal of pathogens in wastewater treatment (Fernandes et al, 2017). Qian et al, (2011) reported that presence of guanidine activates the antibacterial activity against the E. coli.…”

Section: Identification Of Functional Groups In the Developed Em Form...mentioning

confidence: 99%

Assessing the pollution reduction potential of organically formulated Effective Microorganisms (EM) in sewage water

Haripriya¹,

Kalaiselvi²,

Parameswari³

et al. 2022

EEC

View full text Add to dashboard Cite

The biological treatment process has always been a significant part in wastewater treatment. The biologicaltreatment utilizes the metabolic activity of the microorganisms in reducing the pollution load in thewastewater. In this context the effective microbial (EM) formulation gaining momentum nowadays becauseit is an eco-friendly sustainable technology. In this study, the EM formulation has been formulated totallyusing organic materials for the onsite wastewater treatment like sewers and septic tanks in a cost-effectivemanner. A lab scale experiment was also done to prove the effectiveness of the traditionally prepared EMapplied to sewage water in different dosage (1 to 3%) and at different time intervals of 2, 4 and 6 days. Theresults showed that a significant decrease in the various parameters viz., pH, EC, TDS, TSS, BOD and COD.The maximum reduction of BOD (82%) and COD (81%) was obtained in the sewage water inoculated with3% dosage of EM for a incubation period of 6 days. The functional groups in EM which responsible forpollution reduction were also characterised using FTIR analysis.

show abstract

Section: Identification Of Functional Groups In the Developed Em Form...mentioning

confidence: 99%

Assessing the pollution reduction potential of organically formulated Effective Microorganisms (EM) in sewage water

Haripriya¹,

Kalaiselvi²,

Parameswari³

et al. 2022

EEC

View full text Add to dashboard Cite

show abstract

Functionalized cellulose to remove surfactants from cosmetic products in wastewater

Kim

Seo

Lee

2020

Carbohydrate Polymers

View full text Add to dashboard Cite

Chemical and Physical Characteristics of Edible Films, Based on κ- and ι-Carrageenans with the Addition of Lapacho Tea Extract

Jančíková

Đorđević

Jamróz

et al. 2020

Foods

View full text Add to dashboard Cite

The aim of the study was to characterize antioxidant and textural property differences of edible films prepared with the addition of lapacho extract (LE). The experimentally produced edible films also contained different carrageenans (ι-and κ-carrageenan). The κand ι-carrageenan, glycerol and the different addition of LE (5%, 10%, 20%) were used as ingredients for forming films. The pH and viscosity were measured for film forming solutions (before drying). The following analyses were performed on films: the total polyphenol content (TPC), Ferric Reducing Antioxidant Power (FRAP) and 2-Diphenyl-1-Picrylhydrazyl (DPPH). Optical parameters were analyzed by the determination of UV-Vis spectra. The structure of films was characterized by scanning electron microscopy. The gained results indicated that the use of different gelling agents (ι-and κ-carrageenan) resulted in statistically significant (p < 0.05) differences in textural properties (strength and breaking strain) of produced edible films. The highest antioxidant properties and TPC had a κ film with 20% LE (DPPH: 87.63 ± 0.03%; TPC: 233.75 ± 0.104 mg gallic acid/g). According to these results, it can be concluded that edible films with the highest concentrations of added lapacho extract can serve as a good source of antioxidant compounds. Certainly, these properties can be usefully incorporated into the wrapped food commodity.Foods 2020, 9, 357 2 of 15 but there is a high demand from consumers for less processed food and natural substances that can make produced food commodities even more functional [4].Carrageenans are polysaccharides produced by red seaweeds Rhodophyceae [5]. Kappa carrageenan has about 25% to 30% of sulfate content and iota carrageenan about 28 to 30% [6]. Commercial κand ι-carrageenans are gel-forming compounds and they are water soluble [5,7,8]. The physicochemical properties of carrageenans are highly affected by their chemical structures (helical structure formation). It was observed that edible films produced with the use of kappa carrageena were clear, with advantageous mechanical and structural properties [9].The lapacho tea is the inner bark and heartwood of the tree of different botanical names such as Tabebuia avellanedae and Tecoma impetiginosa. These trees are specific to the area of South America, where lapacho is traditionally used, and this tea is well known for its antitumor properties, mainly due to the presence of polyphenolic compounds [10].Polyphenolic compounds are common in fruit and vegetables, they are secondary metabolites, and they also have high antioxidant potential and can also work as anti-inflammatory, antimicrobial, antithrombotic and cardio protective compounds [11]. In natural extracts, there can also be a lot of aromatic compounds, which can work as a UV barrier [12]. On the other side, polysaccharides can interact with the polyphenolic compounds, and they can impact the properties of matrices consisting of these compounds. Food commodities represent mainly complex matrixes, in which interactions between the...

show abstract

Antimicrobial activity and FTIR characterization of lapachol derivatives against Staphylococcus aureus

Cited by 3 publications

References 13 publications

Assessing the pollution reduction potential of organically formulated Effective Microorganisms (EM) in sewage water

Assessing the pollution reduction potential of organically formulated Effective Microorganisms (EM) in sewage water

Functionalized cellulose to remove surfactants from cosmetic products in wastewater

Chemical and Physical Characteristics of Edible Films, Based on κ- and ι-Carrageenans with the Addition of Lapacho Tea Extract

Contact Info

Product

Resources

About