Characterization and antimicrobial analysis of chitosan-based films

Leceta, I.; Guerrero, Pedro; Ibarburu, Idoia; Dueñas, María Teresa; Caba, Koro de la

doi:10.1016/j.jfoodeng.2013.01.022

Cited by 300 publications

(154 citation statements)

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“…Observed shifts of N-H and C-H stretching as seen with CS-coated ZnO nano-rod may be due to interactions of ZnO with -NH/-CH of CS. Other than that, change in peaks at 942 and 986 cm -1 might indicate interaction and deformation of chitosan skeleton (Leceta et al 2013). But the peak at 1149 cm -1 remained the same indicating no major change in glycoside linkage.…”

Section: Ftir Studymentioning

confidence: 94%

“…But the peak at 1149 cm -1 remained the same indicating no major change in glycoside linkage. Among other important peaks at 1420, 1376 and 1324 cm -1 corresponding to primary alcohol (-OH plane deformation) (Leceta et al 2013), CH 3 symmetric deformation (Leceta et al 2013) and C-N of amide band (Fernandes et al 2013) remained intact (Fig. 3).…”

Section: Ftir Studymentioning

confidence: 95%

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Monitoring of ppm level humic acid in surface water using ZnO–chitosan nano-composite as fluorescence probe

Basumallick

Santra

2015

Appl Water Sci

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Surface water contains natural pollutants humic acid (HA) and fulvic acid at ppm level which form carcinogenic chloro-compounds during chlorination in water treatment plants. We report here synthesis of ZnO-chitosan (CS) nano-composites by simple hydrothermal technique and examined their application potential as fluorescent probe for monitoring ppm level HA. These ZnO-CS composites have been characterized by HRTEM, EDX, FTIR, AFM and Fluorescence Spectra. HRTEM images show the formation of ZnO-CS nano-composites of average diameter of 50-250 nm. Aqueous dispersions of these nano-composites show fluorescence emission at 395 nm when excited at 300 nm which is strongly quenched by ppm level HA indicating their possible use in monitoring ppm level HA present in surface water.

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Section: Ftir Studymentioning

confidence: 94%

Section: Ftir Studymentioning

confidence: 95%

Monitoring of ppm level humic acid in surface water using ZnO–chitosan nano-composite as fluorescence probe

Basumallick

Santra

2015

Appl Water Sci

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“…This damages the cell membrane of bacteria due to blocking of the nutrient uptake of the cells or causing leakage of proteinaceous cytoplasmic fluid. When chitosan coatings are used without nanocomposites, the antimicrobial effect decreases over time [64]. Compared to silver nanoparticles, zinc oxide nanoparticles are slightly less effective in their antibacterial activity but they are more eco-friendly and cost effective.…”

Section: Metal or Metal Oxide Nano-additivesmentioning

confidence: 99%

Packaging Concepts for Ready-to-Eat Food: Recent Progress

Silberbauer

Schmid

2017

J Package Technol Res

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During recent years the market for convenience foods has grown rapidly. More and more consumers prefer ready-to-eat (RTE) products because of their advantageous minimal input of time and effort. The increasing awareness of health means there is a need for nutritious, high quality ready meals. Due to technological developments, the packaging industry is continuously coming up with innovative packaging. This is being driven by ecological challenges, policy, and consumer demands. However, only a few studies have hitherto been published on innovative packaging concepts for RTE food. The purpose of this review is to evaluate the status quo and recent progress in this area. It is important to understand the crucial factors for food packaging for RTE food, namely food safety and quality. Packaging concepts have focused on preventing microbial growth, so protecting consumers from food-borne diseases. Bio-based packaging materials such as polylactic acid and chitosan have limited mechanical properties. The use of nanomaterials or natural essential oils to replace synthetic additives could alleviate this. The combination with modified atmosphere packaging showed improvements and prolongation of the shelf life.

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“…on the microbial cells, which then changed their metabolism and led to cell death (13,14). The aim of the present study is to synthesise guar based derivative ie.…”

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confidence: 99%