Facile synthesis and electrochemical characterization of novel metal oxide/Philippine natural zeolite (MOPNZ) nanocomposites

Olegario, Eleanor M.; Pelicano, Christian Mark; Cosiñero, Hannah Shamina O.; Sayson, Luce Vida; Chanlek, Narong; Nakajima, Hideki; Santos, Gil Nonato C.

doi:10.1016/j.matlet.2021.129799

Cited by 7 publications

(2 citation statements)

References 18 publications

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“…The band at 1650 cm −1 corresponds to the OH group bending mode. The band at 1090 cm −1 to the Si-O stretching vibration and at 468 cm −1 to the -SiO 4 - bending mode [ 39 , 40 , 41 ]. It is obvious from the FTIR plot of TO@NZ that characteristic bands of TO exist in the range of 2800–3100 cm −1 , 1300–1500 cm −1 , and 500–1000 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

The Increase of Soft Cheese Shelf-Life Packaged with Edible Films Based on Novel Hybrid Nanostructures

Giannakas

Salmas

Moschovas

et al. 2022

Gels

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This study presents, the development of a green method to produce rich in thymol natural zeolite (TO@NZ) nanostructures. This material was used to prepare sodium-alginate/glycerol/xTO@NZ (ALG/G/TO@NZ) nanocomposite active films for the packaging of soft cheese to extend its shelf-life. Differential scanning calorimetry (DSC), X-ray analysis (XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR) instruments were used for the characterization of such nanostructures and films, to identify the thymol adsorbed amount, to investigate the thermal behaviour, and to confirm the dispersion of nanostructure powder into the polymer matrix. Water vapor transmission rate, oxygen permeation analyzer, tensile measurements, antioxidant measurements, and antimicrobial measurements were used to estimate the film’s water and oxygen barrier, mechanical properties, nanostructure’s nanoreinforcement activity, antioxidant and antimicrobial activity. The findings from the study revealed that ALG/G/TO@NZ nanocomposite film could be used as an active packaging film for foods with enhanced, mechanical properties, oxygen and water barrier, antioxidant and antimicrobial activity, and it is capable of extending food shelf-life.

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Section: Resultsmentioning

confidence: 99%

The Increase of Soft Cheese Shelf-Life Packaged with Edible Films Based on Novel Hybrid Nanostructures

Giannakas

Salmas

Moschovas

et al. 2022

Gels

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“…In the FTIR plot of pure NZ see plot line (2) in Figure 2b) the bands at 3619 and 3436 cm -1 are assigned to the OH group stretching mode, the band at 1650 cm -1 to the OH group bending mode, the band at 1090 cm -1 to the Si-O stretching vibration and the band at 468 cm -1 to the -SiO-bending mode [46,49,50]. As it is shown in Figure 2b the obtained FTIR plot of CV@NZ is a combination of pure CV and pure NZ reflections.…”

Section: Physicochemical Characterization Of Obtained Cv@nz Nanohybridsmentioning

confidence: 99%

Development of Carvacrol@natural Zeolite Nanohybrid and Poly-Lactide Acid / Triethyl Citrate / Carvacrol@natural Zeolite Self-Healable Active Packaging Films for Minced Pork Shelf-Life Extension

Karabagias,

Giannakas,

Andritsos

et al. 2024

Preprint

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Today, enhancing food preservation and safety in the spirit of the bioeconomy suggests the use of biodegradable polymers such as poly-L-lactic acid (PLA) in food packaging and the replacement of chemical additives with natural antioxidant/antibacterial agents such as essential oils and their derivatives. Herein a novel carvacrol (CV) @ natural zeolite (NZ) nanohybrid was developed by employing a new vacuum adsorption desorption method which results in the adsorption of a high CV amount on NZ equal to 61.7 %wt. This CV@NZ nanohybrid was successfully dispersed in a PLA/triethyl citrate (TEC) matrix via a melt-extrusion process to obtain PLA/TEC/xCV@NZ nanocomposite films with 5, 10 and 15 CV@NZ %wt. content. PLA/TEC/xNZ films were also de-veloped for comparison. The overall study resulted in a biodegradable active film with the fol-lowing properties: 10%wt. CV@NZ content (PLA/TEC/10CV@NZ), self-healable properties, 22% higher tensile strength and 40% higher elongation at break, 45% higher water barrier and 40% higher oxygen barrier than pure PLA/TEC matrix. This film also provides high CV release content, high CV control release rate as well as significant antioxidant activity and antibacterial activity against the food pathogens Staphylococcus aureus and Salmonella enterica spp. enterica serovar Typhimurium. This film not only succeeds in extending the shelf-life of fresh pork minced, as shown by total variable count measurements in four days, but also prevents lipid oxidation of fresh minced pork and maintains the minced meat in higher nutritional conditions, as revealed by the heme iron content determination, and in a much better and acceptable sensory condition than the commercial packaging paper.

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Zeolite-modified electrodes for electrochemical sensing of heavy metal ions – Progress and future directions

Thatikayala

Noori

Min

2023

Materials Today Chemistry

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Facile synthesis and electrochemical characterization of novel metal oxide/Philippine natural zeolite (MOPNZ) nanocomposites

Cited by 7 publications

References 18 publications

The Increase of Soft Cheese Shelf-Life Packaged with Edible Films Based on Novel Hybrid Nanostructures

The Increase of Soft Cheese Shelf-Life Packaged with Edible Films Based on Novel Hybrid Nanostructures

Development of Carvacrol@natural Zeolite Nanohybrid and Poly-Lactide Acid / Triethyl Citrate / Carvacrol@natural Zeolite Self-Healable Active Packaging Films for Minced Pork Shelf-Life Extension

Zeolite-modified electrodes for electrochemical sensing of heavy metal ions – Progress and future directions

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