Study of the binding sites in the biomass of Aspergillus niger wild-type strains by FTIR spectroscopy

Gáplovská, Katarína; Šimonovičová, Alexandra; Halko, Radoslav; Okenicová, Lenka; Žemberyová, Mária; Čerňanský, Slavomír; Brandeburová, Paula; Martı́n, Tomás

doi:10.1007/s11696-018-0487-6

Cited by 17 publications

(4 citation statements)

References 17 publications

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“…Figure shows the presence of the different functional groups present on the fungal species and the CDs, attributed to the C–H bond (∼2800 cm –1 ) and carboxyl group (∼1720 cm –1 ) of the lipids and fatty acid present in the fungal spores. The sharp peak observed at ∼1100 cm –1 was due to the polysaccharides present in the fungus, whereas the various absorption peaks from 1300 to 1700 cm –1 were due to the vibration of the amides of proteins and chitin. , After exposing spores to CDs, the intensity of the C–H bond increased with a decrease in intensity of peaks due to the CO vibration band. Moreover, a small shift and broadening of the peak due to the C–O bond was observed in the A. niger spores–CDs rather than in the bare CDs.…”

Section: Resultsmentioning

confidence: 95%

Fluorescent Carbon-Dots Thin Film for Fungal Detection and Bio-labeling Applications

Gaikwad

Joshi

Patil

et al. 2019

ACS Appl. Bio Mater.

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The fluorescence properties of CDs, such as high quantum yield, tunability of emission color, and so on, make a strong potential material in various fields. These applications are mainly derived from in situ formation of surface functional groups, high chemical stability, biocompatibility, and easy interaction with substrates, etc. Mostly, the research applications of CDs concentrate on the labeling of biological species, drug delivery, and sensing in consequent biomedical applications. However, the detection of the fungal species/spores present in the environment by using CDs is rarely reported. Herein, we demonstrate CDs-based thin film as a sensor for detection of fungal spores from the environment. The procedure of detection is based on fluorescence, observed in the film of carbon dots deposited on quartz plates by using the Blodgett technique. It is observed that the CDs film shows quenching in the fluorescence intensity by the substrate, namely, fungal spores' (Aspergillus niger, Penicillium chrysogenum, Alternaria alternata). The effective features of the present detector system are easy fabrication, low cost, high stability, and a green and economical procedure of synthesis. The process of detecting fungal spores even at low concentration from the atmosphere is relatively fast when compared to presently used methods. Finally, real-world feasibility of the sensor film is tested by its successful application for the determination of the presence fungal spores in the environment. Furthermore, CDs have been also successfully applied for the bio-labeling of Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative) bacterial systems.

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Section: Resultsmentioning

confidence: 95%

Fluorescent Carbon-Dots Thin Film for Fungal Detection and Bio-labeling Applications

Gaikwad

Joshi

Patil

et al. 2019

ACS Appl. Bio Mater.

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“…The C=O symmetric stretching of COO-groups appeared in the range of 1413-1415 and 1374 cm −1 . FB can have intensive absorption band characteristics for C-O and C-C vibration (1200-950 cm −1 ), referring to the presence of polysaccharides [73]. In general, all PLA samples exhibited a characteristic peak around 1750 cm −1 , corresponding to the carbonyl stretching vibration ν(C=O) band of PLA.…”

Section: Fourier Transform Infrared (Ft-ir)mentioning

confidence: 99%

Application of Fungal Biomass for the Development of New Polylactic Acid-Based Biocomposites

et al. 2022

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Fungal biomass (FB), a by-product of the fermentation processes produced in large volumes, is a promising biomaterial that can be incorporated into poly(lactic acid) (PLA) to develop enhanced biocomposites that fully comply with the biobased circular economy concept. The PLA/FB composites, with the addition of triethyl citrate (TEC) as a biobased plasticizer, were fabricated by a microcompounder at 150 °C followed by injection molding. The effects of FB (10 and 20 wt %) and TEC (5, 10, and 15 wt %) contents on the mechanical, thermal and surface properties of the biocomposites were analyzed by several techniques. The PLA/FB/TEC composites showed a rough surface in their fracture section. A progressive decrease in tensile strength and Young’s modulus was observed with increasing FB and TEC, while elongation at break and impact strength started to increase. The neat PLA and biocomposite containing 10% FB and 15% TEC exhibited the lowest (3.84%) and highest (224%) elongation at break, respectively. For all blends containing FB, the glass transition, crystallization and melting temperatures were shifted toward lower values compared to the neat PLA. The incorporation of FB to PLA thus offers the possibility to overcome one of the main drawbacks of PLA, which is brittleness.

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“…The strong absorptive peak at 3460 cm −1 and the medium peak at 3039 cm −1 are ascribed to the N-H and C-H stretching vibrations. [38][39][40] The TGA test reveals that compound 1 has good thermal stability, and it does not decompose up to 580 K, Fig. S2.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

A lead bromide organic–inorganic hybrid perovskite material showing reversible dual phase transition and robust SHG switching

Han

Wei

et al. 2022

Dalton Trans.

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Study of the binding sites in the biomass of Aspergillus niger wild-type strains by FTIR spectroscopy

Cited by 17 publications

References 17 publications

Fluorescent Carbon-Dots Thin Film for Fungal Detection and Bio-labeling Applications

Fluorescent Carbon-Dots Thin Film for Fungal Detection and Bio-labeling Applications

Application of Fungal Biomass for the Development of New Polylactic Acid-Based Biocomposites

A lead bromide organic–inorganic hybrid perovskite material showing reversible dual phase transition and robust SHG switching

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