Evaluation of Controlled-Release Property and Phytotoxicity Effect of Insect Pheromone Zinc-Layered Hydroxide Nanohybrid Intercalated with Hexenoic Acid

2015 ◽  
Vol 63 (51) ◽  
pp. 10893-10902 ◽  
Author(s):  
Rozita Ahmad ◽  
Mohd Zobir Hussein ◽  
Wan Rasidah Wan Abdul Kadir ◽  
Siti Halimah Sarijo ◽  
Taufiq-Yap Yun Hin
2013 ◽  
Vol 5 (12) ◽  
pp. 1983-1993 ◽  
Author(s):  
Farahnaz Barahuie ◽  
Mohd Zobir Hussein ◽  
Palanisamy Arulselvan ◽  
Sharida Fakurazi ◽  
Zulkarnain Zainal

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Rozita Ahmad ◽  
Mohd Zobir Hussein ◽  
Siti Halimah Sarijo ◽  
Wan Rasidah Wan Abdul Kadir ◽  
Taufiq-Yap Yun Hin

A new intercalation compound of insect pheromone, valeric acid (VA), based on zinc layered hydroxide (ZLH) as host release material, was successfully prepared through coprecipitation method. The as-produced organic-inorganic nanolayered material, valerate nanohybrid, VAN, shows the formation of a new peak at lower 2θ angle with basal spacing of 19.8 Å with no ZnO reflections, which indicate that the intercalation of anion between the inorganic ZLH interlamellae was accomplished. The elemental, FTIR, and ATR analyses of the nanohybrid supported the fact that the intercalation with the percentage anion loading was calculated to be 23.0% (w/w). The thermal stability property of the resulting nanohybrid was enhanced compared to the unbound anion. Field emission scanning electron micrograph of the ZnO has a nonuniform granular structure but transforms into flake-like structure with various sizes after the intercalation process. Release kinetics of anion from the interlayer of intercalated compound exhibited a slow release behavior governed by the pseudo-second-order kinetic model at different pHs of aqueous media. The valerate anion was released from VAN with the highest release rate at pH 4. These findings provide the basis to further development of controlled release formulation for insect pheromone based on ZLH intercalation.


2014 ◽  
pp. 3137 ◽  
Author(s):  
Farahnaz Barahuie ◽  
Mohd Zobir Hussein ◽  
Shafinaz Abd Gani ◽  
Sharida Fakurazi ◽  
Zulkarnain Zainal

2017 ◽  
Vol 105 ◽  
pp. 35-44 ◽  
Author(s):  
Norhayati Hashim ◽  
Sharifah Norain Mohd Sharif ◽  
Illyas Md Isa ◽  
Shahidah Abdul Hamid ◽  
Mohd Zobir Hussein ◽  
...  

Foods ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1604
Author(s):  
Yu Xiao ◽  
Chi-Tang Ho ◽  
Yulian Chen ◽  
Yuanliang Wang ◽  
Zihao Wei ◽  
...  

Genistein is one of major isoflavones derived from soybean products and it is believed to have beneficial effects on human health. However, its low water-solubility and poor oral bioavailability severely hamper its use as a functional food ingredient or for pharmaceutical industry. In this study, zein and zein/carboxymethyl chitosan (CMCS) nanoparticles were prepared to encapsulate genistein using a combined liquid–liquid phase separation method. The physicochemical properties of fabricated nanoparticles were characterized by dynamic light scattering (DLS), atomic force microscopy (AFM), and Fourier transform infrared spectroscopy (FTIR). The results demonstrated that genistein encapsulated with zein nanoparticles significantly improved its water dispersibility, antioxidant activity in the aqueous phase, and photostability against UV light. Moreover, genistein encapsulated in zein nanoparticles showed a sustained release property. Furthermore, it was found that encapsulation efficiency of genistein was significantly enhanced after CMCS coating, and this effect was more pronounced after the complex nanoparticles cross-linked with calcium ions when compared with the use of zein as a single encapsulant. In addition, compared to zein nanoparticles without biopolymer coating, CMCS coating significantly enhanced the thermal and storage stability of the formed nanoparticles, and delayed the release of genistein. A schematic diagram of zein and zein/carboxymethyl chitosan (CMCS) nanoparticles formation mechanism for encapsulation of genistein was proposed. According to the results of the current study, it could be concluded that encapsulation of genistein in zein/CMCS nanoparticles is a promising approach to improve its water dispersibility, antioxidant activity, photostability against UV light and provide controlled release for food/pharmaceutical applications.


2011 ◽  
Vol 7 (2) ◽  
pp. 183-190 ◽  
Author(s):  
Xiaoying Wang ◽  
Bo Liu ◽  
Xiaohui Wang ◽  
Runcang Sun

2018 ◽  
Vol 23 (4) ◽  
pp. 233-245 ◽  
Author(s):  
Norhayati Hashim ◽  
Sharifah Norain Mohd Sharif ◽  
Zuhailimuna Muda ◽  
Illyas Md Isa ◽  
Noorshida Mohd Ali ◽  
...  

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