Preparation of nanoemulsion of grapefruit seed extract and evaluation of its antibacterial activity

2021 ◽  
Author(s):  
Siqi Wang ◽  
Xiaoyun Liang ◽  
Wangchen Zhao ◽  
Xiaoyu Mi ◽  
Chen Zhang ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Seed Extract ◽  
Grapefruit Seed Extract

Effects of Grapefruit Seed Extract for Antibacterial Activity on the Coated Packaging

2015 ◽  
Vol 19 (2) ◽  
pp. 104-110
Author(s):  
Jin-Won Lee ◽  
◽  
Jin-Ho Yoon ◽  
Jang-Woo Park
Keyword(s):  
Antibacterial Activity ◽  
Seed Extract ◽  
Grapefruit Seed Extract

Green Synthesis of Silver Nanoparticles Using Artocarpus hirsutus Seed Extract and its Antibacterial Activity

2020 ◽  
Vol 21 (10) ◽  
pp. 980-989
Author(s):  
Sampath Shobana ◽  
Sunderam Veena ◽  
S.S.M. Sameer ◽  
K. Swarnalakshmi ◽  
L.A. Vishal
Keyword(s):  
Silver Nanoparticles ◽  
Cell Wall ◽  
Antibacterial Activity ◽  
Listeria Monocytogenes ◽  
Nanoparticle Synthesis ◽  
Enterobacter Aerogenes ◽  
Seed Extract ◽  
Diffusion Method ◽  
Multi Drug Resistance ◽  
Gastrointestinal Bacteria

Aims: To evaluate the antibacterial activity of Artocarpus hirsutus mediated seed extract for nanoparticle synthesis. Background: Gastrointestinal bacteria are known for causing deadly infections in humans. They also possess multi-drug resistance and interfere with clinical treatments. Applied nanotechnology has been known to combat such infectious agents with little interference from their special attributes. Here we synthesize silver nanoparticles from Artocarpus hirsutus seed extract against two gastro-intestinal bacterial species: Enterobacter aerogenes and Listeria monocytogenes. Objective: To collect, dry, and process seeds of Artocarpus hirsutus for nanoparticle synthesis. To evaluate the morphological interaction of silver nanoparticles with bacteria. Methods: Artocarpus hirsutus seeds were collected and processed and further silver nanoparticles were synthesized by the co-precipitation method. The synthesized nanoparticles were characterized using XRD, UV, FTIR, and SEM. These nanoparticles were employed to study the antibacterial activity of nanoparticles against Enterobacter aerogenes and Listeria monocytogenes using well diffusion method. Further, morphological interaction of silver nanoparticles on bacteria was studied using SEM. Result: Silver nanoparticles were synthesized using Artocarpus hirsutus seed extract and characterization studies confirmed that silver nanoparticles were spherical in shape with 25-40 nm size. Antibacterial study exhibited better activity against Enterobacter aerogenes with a maximum zone of inhibition than on Listeria monocytogenes. SEM micrographs indicated that Enterobacter aerogenes bacteria were more susceptible to silver nanoparticles due to the absence of cell wall. Also, the size and charge of silver nanoparticles enable easy penetration of the bacterial cell wall. Conclusion: In this study, silver nanoparticles were synthesized using the seed extract of Artocarpus hirsutus for the first time exploiting the fact that Moraceae species have high phytonutrient content which aided in nanoparticle synthesis. This nanoparticle can be employed for large scale synthesis which when coupled with the pharmaceutical industry can be used to overcome the problems associated with conventional antibiotics to treat gastrointestinal bacteria.

scholarly journals Cellulose Nanofiber-Based Nanocomposite Films Reinforced with Zinc Oxide Nanorods and Grapefruit Seed Extract

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 877 ◽  
Author(s):  
Swarup Roy ◽  
Hyun Chan Kim ◽  
Pooja S. Panicker ◽  
Jong-Whan Rhim ◽  
Jaehwan Kim
Keyword(s):  
Thermal Stability ◽  
Zinc Oxide ◽  
Seed Extract ◽  
Cellulose Nanofiber ◽  
Nanocomposite Films ◽  
Zinc Oxide Nanorods ◽  
Precipitation Method ◽  
Active Food Packaging ◽  
Oxide Nanorods ◽  
Grapefruit Seed Extract

Here, we report the fabrication and characterization of cellulose nanofiber (CNF)-based nanocomposite films reinforced with zinc oxide nanorods (ZnOs) and grapefruit seed extract (GSE). The CNF is isolated via a combination of chemical and physical methods, and the ZnO is prepared using a simple precipitation method. The ZnO and GSE are used as functional nanofillers to produce a CNF/ZnO/GSE film. Physical (morphology, chemical interactions, optical, mechanical, thermal stability, etc.) and functional (antimicrobial and antioxidant activities) film properties are tested. The incorporation of ZnO and GSE does not impact the crystalline structure, mechanical properties, or thermal stability of the CNF film. Nanocomposite films are highly transparent with improved ultraviolet blocking and vapor barrier properties. Moreover, the films exhibit effective antimicrobial and antioxidant actions. CNF/ZnO/GSE nanocomposite films with better quality and superior functional properties have many possibilities for active food packaging use.

Antibacterial activity of a grape seed extract and its fractions against Campylobacter spp.

Food Control ◽  
2013 ◽  
Vol 29 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Jose Manuel Silván ◽  
Elisa Mingo ◽  
Maria Hidalgo ◽  
Sonia de Pascual-Teresa ◽  
Alfonso V. Carrascosa ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Seed Extract ◽  
Campylobacter Spp
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