Preparation, characterization, and preservation performance of active polylactic acid film containing Origanum majorana essential oil and zinc oxide nanoparticles for ground meat packaging

The aim of this work is to improve the mechanical, thermal and water absorption properties of PLCHZ composites. The formation of the composites are mixing polylactic acid with zinc oxide nanoparticles (ZnO) and chitosan as filler. It produced through the precipitation method using a water bath under a temperature of 60 oC. Five prepared samples are pure PLA, PLCH, PLCHZa, PLCHZb and PLCHZc. The incorporating eﬀect of fillers on the properties of samples is investigated in terms of mechanical, thermal and water absorbtion test. The result showed that mechanical and thermal properties increased with the addition of ZnO nanoparticles compared to pure PLA and PLCH. Nevertheless, those properties increased up to 2 wt% of ZnO nanoparticles loading but decreased when it content is increased up to 3 wt% and 4 wt%. PLCHZa with the smallest content of 2 wt% ZnO nanoparticles showed the highest value of 15 MPa in tensile strength and 330.6 oC in thermal resistant. In water absorbtion test, PLCHZc with 4 wt% ZnO has better absorb ability as well as the lowest percentage absorption rate of 0.02% to 0.03%. It can be conclude that ZnO nanoparticles play an important role in the main properties of polymer composites.

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Evaluation of (cytotoxicity and angiogenesis) of Zinc oxide nanoparticles Synthesized by aqueous extract of Origanum majorana

Journal of Birjand University of Medical Sciences ◽

10.32592/jbirjandunivmedsci.2020.27.1.104 ◽

2020 ◽

pp. 56-67

Keyword(s):

Zinc Oxide ◽

Aqueous Extract ◽

Zinc Oxide Nanoparticles ◽

Oxide Nanoparticles ◽

Origanum Majorana

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Optical Characteristics of Zinc Oxide Nanoparticles with Surface Modification Using Polyethylene Glycol

Journal of Inorganic Materials ◽

10.15541/jim20140080 ◽

2014 ◽

Vol 29 (10) ◽

pp. 1039

Author(s):

TAN Man-Lin ◽

WANG Yan-Tao ◽

ZHANG Wei-Li ◽

FU Dong-Ju ◽

LI Dong-Shuang ◽

...

Keyword(s):

Zinc Oxide ◽

Surface Modification ◽

Polyethylene Glycol ◽

Zinc Oxide Nanoparticles ◽

Optical Characteristics ◽

Oxide Nanoparticles

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A comparative study of the antibacterial activity of Quercus robur (Ethanolic extract) and Zinc oxide nanoparticles on Salmonella (In vitro)

International Journal of Research in Pharmaceutical Sciences ◽

10.26452/ijrps.v9ispl1.1397 ◽

2018 ◽

Vol 9 (SPL1) ◽

Author(s):

Hams H. H. Alfattli ◽

Ghufran Zuhair Jiber ◽

Ghaidaa Gatea Abbass

Keyword(s):

Zinc Oxide ◽

Antibacterial Activity ◽

Zinc Oxide Nanoparticles ◽

Quercus Robur ◽

Ethanolic Extract ◽

Inhibitory Effect ◽

Significant Inhibition ◽

Oxide Nanoparticles ◽

Inhibition Zones

This study which designed to evaluate the inhibitory effect of Ethanolic extract of (Quercusrobur) and Zinc oxide nanoparticles on the growth of one genus of enterobacteriacae (Salmonella). In vitro. For this purpose graduate concentrates for plant extract (50, 100, 200, 400 )mg/ml which prepared and compared with Zinc oxide nanoparticles of different concentration (2, 1, 0.5, 0.25) μg/ml,and examined. The result showed that the studied medicinal plant has antibacterial activity against this bacteria which used. The result showed that the plant has good activity in decrease the growth of this bacteria. The results of the study also showed that the nano-ZnO has very effective antibacterial action against the studied bacteria which was Salmonella,nanoparticles concentrations lead to increasing in the inhibition zones of tested bacterial growth. We also study the effect of three antibiotics Lomefloxacin (LOM), Ciprofloxacin (SIP) and Rifampin (RA) and the result showed,in a comparison within the tested bacteria,Salmonella had a significant inhibition increase in Lomefloxacin ; the ciprofloxacin showed effect on tested bacteria. However,Rifampin does not show any effect on tested bacteria.

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