Effect of emulsifier hydrophilic-lipophilic balance (HLB) on the release of thyme essential oil from chitosan films

2019 ◽  
Vol 97 ◽  
pp. 105213 ◽  
Author(s):  
Huan Lian ◽  
Yong Peng ◽  
Jingying Shi ◽  
Qingguo Wang
Keyword(s):  
Essential Oil ◽  
Thyme Essential Oil ◽  
Hydrophilic Lipophilic Balance ◽  
Chitosan Films

scholarly journals Chitosan/Thyme Oil Systems as Affected by Stabilizing Agent: Physical and Antimicrobial Properties

Coatings ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 165 ◽  
Author(s):  
Jana Sedlaříková ◽  
Magda Janalíková ◽  
Ondřej Rudolf ◽  
Jana Pavlačková ◽  
Pavlína Egner ◽  
...  
Keyword(s):  
Essential Oil ◽  
Antimicrobial Properties ◽  
Barrier Properties ◽  
Tween 20 ◽  
Stabilizing Agents ◽  
Chitosan Matrix ◽  
Thyme Essential Oil ◽  
Hydrophilic Lipophilic Balance ◽  
Film Forming ◽  
Chitosan Films

Antimicrobial biopolymer films and coatings are of great interest for many applications. Different chitosan systems were prepared and characterized to evaluate the effect of their composition on the physical and antimicrobial properties. Three types of emulsifiers (Tween 20, 80, and 85) were used as stabilizing agents, combined with thyme essential oil (from two producers) applied as an active substance. A predominant role of the applied stabilizer and its hydrophilic–lipophilic balance value was proven. The incorporation of thyme essential oil and surfactant into the chitosan matrix led to a significant decrease of particle size in film-forming solutions, as well as a thickness increase and the enhancement of the barrier properties in chitosan films. Antimicrobial effects were provided even at the lowest tested concentration of thyme essential oil. Hence, the prepared chitosan films represent promising candidates in antimicrobial packaging applications.

scholarly journals Preparation and characterization of gellan gum-chitosan polyelectrolyte complex films with the incorporation of thyme essential oil nanoemulsion

2021 ◽  
Vol 114 ◽  
pp. 106570
Author(s):  
Xinhui Zhang ◽  
Donghong Liu ◽  
Tony Z. Jin ◽  
Weijun Chen ◽  
Qiao He ◽  
...  
Keyword(s):  
Essential Oil ◽  
Polyelectrolyte Complex ◽  
Gellan Gum ◽  
Thyme Essential Oil

Evaluation of filter media covered with spun fibres and containing thyme essential oil with antimicrobial properties

2020 ◽  
pp. 1-10
Author(s):  
Ana Isabela Pianowski Salussoglia ◽  
Clovis Wesley Oliveira de Souza ◽  
Eduardo Hiromitsu Tanabe ◽  
Mônica Lopes Aguiar
Keyword(s):  
Essential Oil ◽  
Antimicrobial Properties ◽  
Filter Media ◽  
Thyme Essential Oil

Electrospun nanofibers comprising of silk fibroin/gelatin for drug delivery applications: Thyme essential oil and doxycycline monohydrate release study

2018 ◽  
Vol 106 (4) ◽  
pp. 1092-1103 ◽  
Author(s):  
Masoud Dadras Chomachayi ◽  
Atefeh Solouk ◽  
Somaye Akbari ◽  
Davoud Sadeghi ◽  
Fereshteh Mirahmadi ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Essential Oil ◽  
Silk Fibroin ◽  
Electrospun Nanofibers ◽  
Thyme Essential Oil ◽  
Release Study ◽  
Drug Delivery Applications

scholarly journals Adding wheat and rapeseed meal to corn-soy diets affects intestinal morphology and nutrient digestibility in broilers

2021 ◽  
Vol 50 (6) ◽  
Author(s):  
E. Amirahmadi ◽  
A.R. Safamehr ◽  
A. Nobakht ◽  
Y. Mehmannavaz
Keyword(s):  
Small Intestine ◽  
Essential Oil ◽  
Broiler Chickens ◽  
Protein Digestibility ◽  
Rapeseed Meal ◽  
Nutrient Digestibility ◽  
Intestinal Morphology ◽  
Thyme Essential Oil ◽  
Randomized Design ◽  
Enzyme Supplementation

This study was conducted to investigate the effects of thyme essential oil and enzyme supplementation on rations with two different energy (wheat or corn) and protein resources (soy or rapeseed meals) on gut morphology and protein digestibility of broiler chickens. Three hundred eighty-four male Ross-308 broiler chickens were used with a 23 factorial arrangement with treatments according to a completely randomized design. The morphological examinations of the intestine were carried out on 1-cm long excised segments from duodenum, jejunum and ileum. Adding wheat to the diet increased small intestine length in birds compared to other feedstuffs (P <0.05). Duodenum crypt depth and jejunum villi length were also higher in groups fed with rations containing wheat (P <0.05). Groups that received thyme essential oil and enzyme supplementation had increased length of the duodenum (P <0.05). However, the two- and three-factor interaction effects were not significant. Protein digestibility was not affected by treatment (P >0.05). Feeding wheat to broiler chickens may increase the surface area for nutrient absorption in the small intestine as compensation for the anti-nutritive activity of non-starch polysaccharides in wheat-based diets. Wheat based diets are expected to be acceptable for broilers when supplemented with appropriate enzymes or thyme essential oil.

scholarly journals EFFECT OF CONVENTIONAL AND ALTERNATIVE PRODUCTS ON POSTHARVEST DISEASE CONTROL IN AVOCADOS

2018 ◽  
Vol 40 (1) ◽  
Author(s):  
Ivan Herman Fischer ◽  
Matheus Froes de Moraes ◽  
Maria Cecília de Arruda Palharini ◽  
Mirian de Souza Fileti ◽  
Juliana Cristina Sodário Cruz ◽  
...  
Keyword(s):  
Essential Oil ◽  
Sodium Bicarbonate ◽  
Disease Control ◽  
Chlorine Dioxide ◽  
Physicochemical Characterization ◽  
Soluble Solids ◽  
Postharvest Disease ◽  
Postharvest Diseases ◽  
Lemon Grass ◽  
Thyme Essential Oil

ABSTRACT Postharvest diseases constitute a serious problem for avocado commercialization. Thus, the present study aimed to evaluate the effect of conventional and alternative products in controlling diseases affecting ‘Hass’ avocados in the field and in the postharvest by carrying out physicochemical characterization of fruits subjected to postharvest treatments. In the field, besides the management adopted by the farmer, seven products were sprayed three times during fruiting for evaluation. Postharvest products were diluted in water or in oxidized polyethylene wax and shellac. Water treatments with potassium phosphite, Soil-Set®, chlorine dioxide, thyme essential oil, sodium bicarbonate, lemon grass essential oil and thiabendazole reduced the incidence of diseased fruits, and anthracnose, the main disease, was controlled with sodium bicarbonate, lemon grass essential oil and thiabendazole. Greater soluble solids content was found for control (water), chlorine dioxide, acibenzolar-S-methyl and thiabendazole. For the products that reduced anthracnose, there was no correlation between the disease and the physicochemical parameters, evidencing that the disease control is not associated with delayed ripening. For wax treatments, diseases were not controlled, and the fruits presented lower titratable acidity with thyme essential oil, sodium bicarbonate, control (wax), acibenzolar-S-methyl and lemon grass essential oil. Control and thyme essential oil were highlighted for maintaining the green coloration of the fruit skin for the shortest period. Under field conditions, azoxystrobin, thiabendazole, difenoconazole+azoxystrobin and acibenzolar-S-methyl+azoxystrobin reduced the occurrence of diseased fruits, while anthracnose control was only obtained with azoxystrobin.

Sign in / Sign up

Export Citation Format

Share Document