International Journal Of Bio-Inorganic Hybrid Nanomaterials
Volume:10 Issue: 1, Spring 2021

The food business has a high demand for sophisticated and environmentally friendly packaging materials that have improved physical, mechanical, and barrier capabilities. Synthetic and non-biodegradable materials are commonly used, raising environmental issues. As a result, in recent years, research has focused on the creation of bio-based sustainable packaging materials. The potential of nanocelluloses as nanofillers or coatings for the production of bio-based nanocomposites is covered in this review, which includes: the effect of nanocellulose modification/functionalization on the final qualities, the physico-chemical interaction of nanocellulose with the neighboring polymeric phase.

Nanotechnology is the science to create products with enormous potential to treatdiseases. Diabetic ulcers and their infections have affected many people around the world, and manypeople die each year from infections caused by microorganisms in these ulcers. The aim of this studywas to investigate the antibacterial properties of chitosan nanoparticles against Escherichia coli isolatedfrom diabetic wounds. Morphological evaluation and substructure of nanoparticles synthesized byion gelling method were performed by XRD and TEM. Investigation of the antibacterial properties ofchitosan nanoparticles on Esherichia coli by qualitative agar well diffusion test and microdilution wasperformed to the concentration of 0.064 g/l to 0.256 g/l. The size of chitosan nanoparticles in this studywas 100 nm and spherical shape. The sizes of the inhibition zone were different according to the typeof bacteria and the concentrations of chitosan, the maximum zone diameter 20 mm in concentration0.256 g.l being observed.

A flame atomic absorption spectrophotometric (FAAS) method for the determination of trace Co(II) after adsorption of synthesis modified with methionine-glutaraldehyde schiff’s base (MG-Chi/Fe3O4) nano-biosorbent has been developed. Applying a facile and accessible sample preparation method is highly important before the experimental analysis process. In the current study, a technique was introduced for preconcentration and analysis of trace amounts of Co(II) ions in water samples. The important parameters in the analytical procedure of Co(II) ions were optimized such as the pH of extraction, amount and type of elution solvent, time of extraction, and the effect of another ion. Analytical parameters such as the concentration factor, the limit of detection (LOD) of the technique, and relative standard deviation (RSD %) were achieved as 20, 10.0 μg L-1, and 2.8%, respectively.

The purpose of this study is a better understanding of the encapsulation and interaction two azomethines (FUR and TIO) into BN nanotube [BNNT(6,6-8)]. The electronic and adsorption properties of the molecules FUR and TIO over the BNNT were theoretically investigated in the solvent water with the B3LYP/6-31G* level of theory. With the non-bonded interaction of two azomethines, the electronic properties of the BN nanotube can be significantly changed. The electronic spectra of the molecules FUR, TIO and complexes FUR/BNNT and TIO/BNNT were calculated by TD-DFT method for the study of adsorption effects. According to the NBO results, the molecules FUR, TIO and BNNT(6,6-8) play as both electron donor and acceptor at the complexes FUR/BNNT and TIO/BNNT. On the other hand, the charge transfer is occurred between the bonding, antibonding or nonbonding orbitals in the molecules azomethine and BNNT(6,6-8). As a consequence, BNNT(6,6-8) can be considered as a delivery or absorbent system.

We developed a Loop-Mediated Isothermal Amplification (LAMP) assay for rapid detection of the most prevalent Rotavirus genotype (G1) responsible for the hospitalization of children worldwide, and compared the sensitivity of LAMP with nested-PCR. A total of 365 stool samples from young children were analyzed by using 6 set of primers targeting conserved sequences of VP7 gene, within 90 min, under isothermal conditions at 62°C, by only a regular laboratory heat block. Then, the LAMP products were analyzed by using gel electrophoresis and the naked-eye after adding SYBR Green I. A ladder pattern on gel electrophoresis was observed specifically only for G1 Rotaviruses and not for other viruses. This LAMP reaction had the same sensitivity as a nested-PCR assay, the detection limit for the both systems were found to be 10 copies ml-1 of G1 Rotavirus RNA. The LAMP assay reported here is faster than nested PCR, cost-effective, and easy to perform and will be valuable tool for rapid and reliable clinical diagnosis of Rotavirus in developing countries.

Functional foods can potentially play a key role in preventing health risks associated with eating habits. The development of healthy foods through the addition of bioactive compounds poses many technical challenges. These substances cannot tolerate the conditions of the stomach and in most cases are unable to reach the site of absorption. Microcapsulation has created new opportunities that could revolutionize the food and dairy industry. Microencapsulation greatly helps to improve the transport of bioactive compounds by reducing particle size and increasing surface area by volume. Microcapsulation is a useful tool for improving the transport of bioactive compounds in foods, especially probiotics, minerals, vitamins, lutein, fatty acids, lycopene and antioxidants, peptides, phytosterols, polyphenols, bioflavonoids and fibroids. Future research is likely to focus on the transfer and potential use of common encapsulation methods, in which two or more bioactive substances can be combined for a synergistic effect. In this article are discussed some aspects related to encapsulation methods, coatings, bioactive compounds and their use in food processing, especially dairy products. Future research is likely to focus on aspects of delivery and the potential use of co-encapsulation methodologies, where two or more bioactive ingredients can be combined to have a synergistic effect.