Liberación De Antocianinas a Partir De Películas De Quitosano Entrecruzadas Con Tripolifosfato De Sodio

Carlos-Salazar, Max J.; Valderrama-Negrón, Ana C.

doi:10.37761/rsqp.v83i1.108

Cited by 12 publications

(3 citation statements)

References 11 publications

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“…The success of gelation is related to the degree of deacetylation and molecular weight of chitosan, having a more significant number of amino groups in acid solution due to a higher molecular weight, increasing the number of positive charges (Rodríguez et al 2010). The increase could have produced a high degree of crosslinking with the AC, as observed in the SEM images of the different synthesized biocomposites, as shown in figure 2.…”

Section: Biocomposites Of Chitosan and Acmentioning

confidence: 96%

Potential of chitosan and activated carbon biocomposites for removing enrofloxacin and oxytetracycline from water

Molina-Amaya,

Ávila-Reyes,

Delgado-Alvarado

et al. 2024

RICA

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Enrofloxacin (ENRO) and oxytetracycline (OTC) are two antibiotics, which are difficult to remove by conventional water treatment methods. The characteristics of the biocomposites suggest that they could represent an alternative for the removal of this type of substances through adsorption processes. The current study aimed to determine and compare the potential of biocomposites formed with chitosan and different concentrations of activated carbon (AC) with a particle size of 500 nm, prepared from agave bagasse, to remove enrofloxacin and oxytetracycline solved in water. The effectiveness of the addition of different concentrations of AC (0, 0.5, 2 and 5% w/v) to chitosan was evaluated by morphological analysis using scanning electron microscopy (SEM). The detection of the characteristic functional groups carried out by Fourier transform infrared spectroscopy (FTIR) indicated that the nanoparticles of AC were attached in the chitosan biocomposite, and stable chemical crosslinking was formed during the polymerization process. The removal test of ENRO (10 mg/mL) and OTC (10 mg/mL) in a water was performed by a gradient method of high-performance liquid chromatography (HPLC). The results showed that the addition of AC to chitosan formed a biocomposite with maximum capacity to remove 59.3% of OTC (contact time 2 h at 100 rpm, 4 g biocomposite/L solution, pH 6-7, 30 ºC), and a maximum removal of 50.3% of ENRO (contact time 2 h at 100 rpm, 4 g biocomposite/L solution, pH 6, 30 ºC). Biocomposites formed by chitosan and agave activated carbon can support the development of tools for the removal of recalcitrant antibiotics from water bodies.

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Section: Biocomposites Of Chitosan and Acmentioning

confidence: 96%

Potential of chitosan and activated carbon biocomposites for removing enrofloxacin and oxytetracycline from water

Molina-Amaya,

Ávila-Reyes,

Delgado-Alvarado

et al. 2024

RICA

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“…The band at 1559 cm -1 corresponds to bonding vibration of amine -N-H. The amine groups are presented in the deacetylated repeating unit of chitosan 29,30 . The signal at 1099 cm -1 is associated to pyranoside structure vibration 29,31 .…”

Section: Nanoparticles Characterizationmentioning

confidence: 99%

“…The amine groups are presented in the deacetylated repeating unit of chitosan 29,30 . The signal at 1099 cm -1 is associated to pyranoside structure vibration 29,31 . The spectrum of G (Figure 1b) shows a band at 1649 cm -1 attributed to the stretching vibration of amide I due to the peptide bonds presented in the polymer.…”

Section: Nanoparticles Characterizationmentioning

confidence: 99%

Desarrollo De Nanopartículas De Quitosano-Gelatina Y Quitosano-Colágeno Para Liberación De Fármacos

Carlos Salazar,

Vega Chacón,

Amaro Martins

et al. 2023

rsqp

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Polymeric nanoparticles have demonstrated a great potential for biomedical application, especially in drug delivery systems acting as nanocarriers. The polymers obtained from living organisms, known as biopolymers, are promising materials for these purposes since they present biodegradability, biocompatibility and low immunogenicity, which are features required for in vivo applications. In this work, polymeric nanoparticles were prepared from mixtures of biopolymers such as chitosan, collagen and gelatin by ionic reticulation with sodium tripolyphosphate. Picric acid as a model drug was encapsulated into the nanoparticles. Chitosan of 50.4 kDa of molecular weight and 81 % of deacetylation degree was prepared through the deacetylation and depolymerization of chitin extracted from squid pens (Loligo sp). The composition, size distribution, and surface charge of the prepared nanoparticles were evaluated. Moreover, the influence of the nanoparticles mass and picric acid concentration were analyzed during the loading process by determining of the loaded content and the incorporation efficiency. Maximum loaded contents of picric acid were 7.16 % and 6.45 % for chitosan/gelatin nanoparticles and chitosan/collagen nanoparticles, respectively. In vitro release tests showed a quick picric acid release in chitosan/gelatin nanoparticles. The nanoparticles prepared with collagen took longer time to release the picric acid. Kinetic studies, using mathematical models, revealed that the release takes place through a diffusion mechanism.

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Preparation and characterization of an intelligent film based on fish gelatin and Coleus scutellarioides anthocyanin to monitor the freshness of rainbow trout fish fillet

Hematian

Baghaei

Nafchi

et al. 2022

Food Science & Nutrition

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In this study, a pH‐sensitive indicator based on fish gelatin and Coleus scutellarioides anthocyanin extract (CSAE) was prepared and characterized. Films were prepared using the solvent casting method and different levels of CSAE, including 10 ml (CSG1), 20 ml (CSG2), and 30 ml (CSG3), and 0 ml (CSG0) as a control sample. The mechanical, optical, and pH sensing of active films and the release of anthocyanins from the films were investigated. The relationship between the total volatile basic nitrogen (TVB‐N) of fish fillets and a* color index of films was studied. By incorporation of CSAE, the flexibility of films increased, while the tensile strength and UV–Vis light transmittance through the films decreased (p < .05). The films containing the CSAE had a darker, yellowish, and reddish color than the control film. There was a significant relationship between the pH variation and the film color. The films had a purple color at acidic pH, and their color changed to green at an alkaline pH, indicating the sensitivity of the produced films to pH changes. There was a significant relationship between the TVB‐N value of fish fillets and the a* index of the film during the 16 h storage time. The results showed that by increasing TVB‐N values of the fillets, the a* color index decreased, and the films' color changed from purple to colorless. In summary, the active films prepared with fish gelatin and CSAE could be used as pH‐sensitive intelligent packaging to display the freshness of fishery products.

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Liberación De Antocianinas a Partir De Películas De Quitosano Entrecruzadas Con Tripolifosfato De Sodio

Cited by 12 publications

References 11 publications

Potential of chitosan and activated carbon biocomposites for removing enrofloxacin and oxytetracycline from water

Potential of chitosan and activated carbon biocomposites for removing enrofloxacin and oxytetracycline from water

Desarrollo De Nanopartículas De Quitosano-Gelatina Y Quitosano-Colágeno Para Liberación De Fármacos

Preparation and characterization of an intelligent film based on fish gelatin and Coleus scutellarioides anthocyanin to monitor the freshness of rainbow trout fish fillet

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