Green products from herbal medicine wastes by subcritical water treatment

Jouyandeh, Maryam; Tavakoli, Omid; Sarkhanpour, Reza; Sajadi, S. Mohammad; Zarrintaj, Payam; Rabiee, Navid; Akhavan, Omid; Lima, Éder C.; Saeb, Mohammad Reza

doi:10.1016/j.jhazmat.2021.127294

Cited by 32 publications

(12 citation statements)

References 61 publications

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“…There are several methods of extraction in plants, including soaking, brewing, digestion, boiling, percolation, Soxhlet extraction, microwave extraction, ultrasound extraction and super/subcritical water [61,62]. The solvent used to extract bioactive compounds from plants is known as menstruum.…”

Section: Bio-templates-mediated Synthesis Strategies 21 Plant Extractsmentioning

confidence: 99%

Green Synthesis of Magnesium Oxide Nanoparticles and Nanocomposites for Photocatalytic Antimicrobial, Antibiofilm and Antifungal Applications

Farani

Farsadrooh

Zare³

et al. 2023

Catalysts

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Magnesium oxide nanoparticles (MgO NPs) have emerged as potential materials for various biomedical applications due to their unique physicochemical properties, including biodegradability, biocompatibility, cationic capacity, high stability and redox properties. MgO NPs have become an attractive platform to combat microbes and may be a promising alternative to overcome challenges associated with eliminating microbial biofilms and antibiotic resistance. Hence, due to the increasing use of MgO NPs in biomedicine, new synthetic strategies for MgO NPs are necessary. MgO NPs synthesised using green methods are non-toxic, eco-friendly and have high stability for a wide range of biological, medical and catalytic applications. This review presents the recent advances in biosynthesis strategies of MgO NPs by diverse bio-templates, such as plant, bacterial, fungal and algal extracts. Its photocatalytic properties show a suitable inhibitory function against pathogenic agents, such as microbial proliferation, biofilm formation and fungal growth. Furthermore, MgO NPs and relevant nanocomposites are comprehensively discussed regarding the mechanisms of their effect on microbes, biofilms and fungal strains, as well as challenges and future perspectives.

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Section: Bio-templates-mediated Synthesis Strategies 21 Plant Extractsmentioning

confidence: 99%

Green Synthesis of Magnesium Oxide Nanoparticles and Nanocomposites for Photocatalytic Antimicrobial, Antibiofilm and Antifungal Applications

Farani

Farsadrooh

Zare³

et al. 2023

Catalysts

Self Cite

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“…This treatment can effectively improve the combustion efficiency of gaseous organic molecules compared to burning biomass directly, thereby reducing PAHs emissions and producing valuable materials such as graphene [ 138 ]. In addition, using supercritical water as an oxidant during biomass gasification can generate hydrogen and carbon monoxide, and reduce the emission of PAHs during combustion [ 139 , 140 , 141 ]. Therefore, the dual control of the oxygen supply and rate of the burner is considered to reduce the emission of PAHs from biomass burning and the related health risks.…”

Section: Factors That Influence Pah Emissionsmentioning

confidence: 99%

Characteristics and Influencing Factors of Polycyclic Aromatic Hydrocarbons Emitted from Open Burning and Stove Burning of Biomass: A Brief Review

Zhang

Wang

et al. 2022

IJERPH

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To mitigate global warming and achieve carbon neutrality, biomass has become a widely used carbon-neutral energy source due to its low cost and easy availability. However, the incomplete combustion of biomass can produce polycyclic aromatic hydrocarbons (PAHs), which are harmful to human health. Moreover, increasing numbers of wildfires in many regions caused by global warming have greatly increased the emissions of PAHs from biomass burning. To effectively mitigate PAH pollution and health risks associated with biomass usage, the concentrations, compositions and influencing factors of PAH emissions from biomass burning are summarized in this review. High PAH emissions from open burning and stove burning are found, and two- to four-ring PAHs account for a higher proportion than five- and six-ring PAHs. Based on the mechanism of biomass burning, biomass with higher volatile matter, cellulose, lignin, potassium salts and moisture produces more PAHs. Moreover, burning biomass in stoves at a high temperature or with an insufficient oxygen supply can increase PAH emissions. Therefore, the formation and emission of PAHs can be reduced by pelletizing, briquetting or carbonizing biomass to increase its density and burning efficiency. This review contributes to a comprehensive understanding of PAH pollution from biomass burning, providing prospective insight for preventing air pollution and health hazards associated with carbon neutrality.

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“…Therefore, the WDE from various beer productions will have similar reduction properties for Au NP biosynthesis. In addition, the use of waste material from biotechnological processes for the preparation of nanomaterial is currently very desirable green technology (Jouyandeh et al 2022 ).…”

Section: Resultsmentioning

confidence: 99%

Effective and reproducible biosynthesis of nanogold-composite catalyst for paracetamol oxidation

Krbečková

Šimonová

Langer

et al. 2022

Environ Sci Pollut Res

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Pharmaceutical products are some of the most serious emergent pollutants in the environment, especially nowadays of the COVID-19 pandemic. In this study, nanogold-composite was prepared, and its catalytic activity for paracetamol degradation was investigated. Moreover, for the first time, recycled waste diatomite earth (WDE) from beer filtration was used for reproducible gold nanoparticle (Au NPs) preparation. We studied Au NPs by various psychical-chemical and analytical methods. Transmission and scanning electron microscopy were used for nanogold-composite morphology, size and shape characterization. Total element concentrations were determined using inductively coupled plasma mass and X-ray fluorescence spectrometry. X-ray powder diffraction analysis was used for crystal structure characterization of samples. Fourier transform infrared spectrometer was used to study the chemical changes before and after Au NP formation. The results revealed that the WDE served as both a reducing and a stabilizing agent for crystalline spherical 30 nm Au NPs as well as acting as a direct support matrix. The kinetics of paracetamol degradation was studied by high-performance liquid chromatography with a photodiode array detector. The conversion of paracetamol was 62% and 67% after 72 h in the absence or presence of light irradiation, respectively, with 0.0126 h −1 and 0.0148 h −1 reaction rate constants. The presented study demonstrates the successful use of waste material from the food industry for nanogold-composite preparation and its application as a promising catalyst in paracetamol removal. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s11356-022-21868-6.

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Green products from herbal medicine wastes by subcritical water treatment

Cited by 32 publications

References 61 publications

Green Synthesis of Magnesium Oxide Nanoparticles and Nanocomposites for Photocatalytic Antimicrobial, Antibiofilm and Antifungal Applications

Green Synthesis of Magnesium Oxide Nanoparticles and Nanocomposites for Photocatalytic Antimicrobial, Antibiofilm and Antifungal Applications

Characteristics and Influencing Factors of Polycyclic Aromatic Hydrocarbons Emitted from Open Burning and Stove Burning of Biomass: A Brief Review

Effective and reproducible biosynthesis of nanogold-composite catalyst for paracetamol oxidation

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