Preparation and investigation of poly(methylmethacrylate) nano-capsules containing haloxyfop-R-methyl and their release behavior

Mahmoudian, Mehdi
Torbati, Samaneh
AliMirzayi, Neda
Nozad, Ehsan
Kochameshki, Mahmoud Ghasemi
Shokri, Aref
In this study, the preparation and characterization of haloxyfop-R-methyl herbicide loaded in poly(methylmethacrylate) (PMMA) nano-capsules by emulsion polymerization and its release behavior were investigated. The chemical characterizations of PMMA/haloxyfop-R-methyl nano-capsules were confirmed by FT-IR spectroscopy method, and the surface morphology was studied by field emission scanning electron microscopy and transmission electron microscopy. Also, the herbicide loading and encapsulation efficiency were analyzed for the herbicide-loaded nano-capsules. The release rate of PMMA/haloxyfop-R-methyl nano-capsules was determined by UV-visible spectroscopy. The thermal properties and thermal stability of nano-capsules were explored by the thermal gravimetric analysis method. The diameter of the nano-capsules was in the range of 100-300 nm. Increasing the amount of herbicide in nano-formulations significantly affected the surface of the nano-capsules and reduced their surface smoothness. Triton-X100 was identified as the best surfactant for the preparation of nano-capsules, and the sample containing the lowest herbicide content showed the best performance in terms of encapsulation and loading efficiency. This sample showed a steady-state release rate during the six days.


Development of in vitro micropropagation techniques for saffron (Crocus sativus L.)
Yıldırım, Evrim; Kaya, Zeki; Department of Biology (2007)
In vitro micropropagation of saffron (Crocus sativus L.) by using direct and indirect organogenesis was the aim of this study. Also, the effect of plant growth regulators on growth parameters, such as corm production, sprouting time and germination ratio were investigated in ex vitro conditions. For in vitro regeneration of saffron, the effects of 2,4-D (2,4-dichlorophenoxyacetic acid) and BAP (6-benzylaminopurine) were tested initially. It was observed that 0,25 mg/L 2,4-D and 1 mg/L BAP combination was su...
Cinnamon oil nanoemulsions by spontaneous emulsification: Formulation, characterization and antimicrobial activity
YILDIRIM, Simge Tutku; Öztop, Halil Mecit; Soyer, Yeşim (Elsevier BV, 2017-10-01)
The goal of this study was to formulate stable cinnamon oil nanoemulsions (NEs) exhibiting high anti-microbial activity by using the low-energy approach: spontaneous emulsification (SE) and compare it with two high-energy methods. To prepare the nanoemulsions by SE, oil phase containing cinnamon oil (CO) and carrier oil (coconut oil (CNO)) at different ratios (2:8-10:0) and surfactant (Tween 80) at 10% (w/w) was titrated into an aqueous phase (distilled water). For antimicrobial activity, agar disc diffusio...
Evaluation of hemicellulose as a coating material with gum arabic for food microencapsulation
Tatar, Feyza; Tunc, Merve Tugce; DERVİŞOĞLU, MUHAMMET; Çekmecelioğlu, Deniz; KAHYAOĞLU, TALİP (Elsevier BV, 2014-03-01)
In this study, hemicellulose-based coatings were assessed for use in microencapsulated fish oil. The fish oil emulsions were prepared using the solutions of gum arabic (GA), gum arabic-hemicellulose (GA-HC) and hemicellulose (HC) as the coating materials, amended with maltodextrin as a cheap filler material. The fish oil was then encapsulated with these emulsions using the spray drying method. The effects of the hemicelluloses on the emulsions and the formed microcapsules were evaluated by physical and chem...
Investigation of lipid-derived formation of decadien-1-amine, 2-pentylpyridine, and acrylamide in potato chips fried in repeatedly used sunflower oil
Karademir, Yesim; GÖKMEN, VURAL; Öztop, Halil Mecit (Elsevier BV, 2019-07-01)
This study aimed to investigate lipid derived formations of decadien-1-amine, 2-pentylpyridine, and acrylamide in potato chips during frying. 2,4-Decadienal, a lipid derived carbonyl, was monitored in repeatedly used sunflower oil at different thermoxidation levels (0, 6, 12, 18, 24 h at 180 degrees C), and in potato chips prepared in. Formations of decadien-1-amine and 2-pentylpyridine were shown for the first time in potato chips. Frying oil had the highest concentration of 2,4-decadienal after thermal ox...
Digestion of animal- and plant-based proteins encapsulated in kappa-carrageenan/protein beads under simulated gastrointestinal conditions
Özel, Barış; He, Lili; McClements, David Julian (Elsevier BV, 2020-11-01)
In this study, we encapsulated both animal-derived (whey) and plant-derived (soy and pea) proteins within polysaccharide/protein beads and measured the digestion of these beads under simulated gastrointestinal tract (GIT) conditions. Bead dimensions were measured using a digital caliper and found to increase as the shear thinning behavior of the protein/polysaccharide solutions used to form them increased. The hydrolysis of the plant and animal proteins trapped inside the protein/polysaccharide beads was st...
Citation Formats
M. Mahmoudian, S. Torbati, N. AliMirzayi, E. Nozad, M. G. Kochameshki, and A. Shokri, “Preparation and investigation of poly(methylmethacrylate) nano-capsules containing haloxyfop-R-methyl and their release behavior,” JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES, pp. 301–309, 2019, Accessed: 00, 2020. [Online]. Available: