In this work, the biodegradable poly(epsilon-caprolactone) (PCL)/poly(ethylene glycol) (PEG) microcapsules were prepared in the presence of SiO(2) and fragrant oil using emulsion solvent evaporation method. And SiO(2) was chemically treated in 30 wt.% hydrochloric acid and sodium hydroxide. The effect of chemical treatment on SiO(2) surfaces was studied in terms of pH, acid-base value, and N(2)/77 K gas adsorption. Image analyzer and scanning electron microscope (SEM) were used to observe the shape and surface change of the prepared microcapsules. And the variation of surface free energy of microcapsules was characterized by contact angles. The results showed that the average diameter, surface free energy, and fragrant oil release rate of microcapsules were increased with increasing the PEG ratio. Also, it was found that in the case of basic treated SiO(2), the fragrant oil adsorption capacity and release rate were decreased due to the decrease of specific surface area or the increase of acid-base interactions between basic SiO(2) and acidic fragrant oil.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.colsurfb.2004.08.008 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nanoencapsulation of (Lam) DC-Essential Oil and Controlled Release: Experiments and Modeling.
Pharmaceutics
December 2024
Unit Operations Lab, School of Technology, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga 6681-Prédio 30, Bloco F, Sala 208, Porto Alegre 90619-900, Brazil.
Degradation by physical and chemical agents affects the properties of essential oils; therefore, this study aimed to protect the volatile compounds present in essential oils through biopolymer encapsulation. The (Lam) DC. essential oil was obtained by steam distillation at 2.
View Article and Find Full Text PDFDevelopment of nanofiber facial mask inspired by the multi-function of dried ginger (Zingiberis Rhizoma) essential oil.
Sci Rep
January 2025
School of Pharmacy, School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
Plant extracts, especially herbal extracts, are in line with the cosmetics development trend of natural and safe in today's world. Dried ginger essential oil (DGEO) is a fragrant oily liquid extracted from the dried roots of Zingiber officinale Rosc. This research investigated DGEO could effectively inhibit Staphylococcus aureus and Propionibacterium acnes.
View Article and Find Full Text PDFChanges in Morphological, Physiological and Phytochemical Traits of Different Dill ( L.) Cultivars as Affected by Light-Emitting Diodes.
Molecules
November 2024
Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, 50-375 Wrocław, Poland.
Dill is a fragrant vegetable containing various beneficial compounds for health. This research aims to evaluate the impact of various spectra of LED light on essential oil composition and morphological and physiological characteristics of three dill cultivars. LED light treatments included greenhouse light as control (C), blue (B), red (R), red + blue (RB), and white (W).
View Article and Find Full Text PDFImproving flavor of strong fragrant rapeseed oils by supplementing commercial peptides and sugars.
Food Chem X
December 2024
Jiangsu Hefeng Grain and Oil Industry Co., Ltd., Yancheng 212002, PR China.
The strong fragrant rapeseed oils (SFROs) attract an increasing consumers' preference due to their strong flavor and attractive appearance. With the accumulated knowledge of flavor formation pathways during producing SFROs, the present study proposed a novel method to enhance SFRO's flavor by directly adding the reducing sugars (glucose and xylose) and commercial peptides during roasting process. Results indicated that supplementation of 3 % rapeseed peptide, 1 % glucose and 0.
View Article and Find Full Text PDFClassification of Sesame Oil Based on Processing-Originated Differences in the Volatile Organic Compound Profile by a Colorimetric Sensor.
Foods
October 2024
School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Ave., Singapore 639798, Singapore.
Article Synopsis
- Fragrant sesame oil is valued for its distinctive aroma, which is influenced by its volatile organic compound (VOC) profile that varies with production methods and blending techniques.
- Traditional aroma analysis methods, like sensory evaluation and gas chromatography, have limitations, prompting the need for new approaches.
- A new 14-unit multiplexed paper-based colorimetric sensor has been developed to analyze the VOC profiles of sesame oil, providing a visual "fingerprint" that can indicate processing differences and detect blending with refined oil.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!