نتایج جستجو برای: volatile solvent

تعداد نتایج: 93833  

2016
Thawatchai Phaechamud Sarun Tuntarawongsa

Eutectic solvent can solubilize high amount of some therapeutic compounds. Volatile eutectic solvent is interesting to be used as solvent in the preparation of nanosuspension with emulsion solvent evaporation technique. The mechanism of transformation from the eutectic emulsion to nanosuspension was investigated in this study. The 30% w/w ibuprofen eutectic solution was used as the internal pha...

Journal: :Lab on a chip 2014
Qingquan Zhang Xiaojun Liu Dayu Liu Hongwei Gai

In this paper, we present a novel method to generate ultra-small droplets via volatile component evaporation. By regulating the composition of the binary solvent, the volume ratio of the high saturated vapor pressure component, and the flow rate ratio of the two phases, monodisperse ultra-small water or nonvolatile organic droplets can be formed. This method is flexible, versatile, and compatib...

2016
A. Kaul B. Seleznev

A novel scheme of flash evaporation feeding for MOCVD processes of multicomponent oxide films deposition is proposed. The scheme comprises 1) microdozage of organic solution of solid volatile precursors on the glass fiber belt, 2) evaporation of the solvent and 3) flash evaporation of MOC microdoses from the belt. The functioning of the designed feeder is described and the features of proposed ...

Journal: :Molecules 2009
Zhiwen Xi Wenyan Hao Pingping Wang Mingzhong Cai

Ruthenium(III) chloride-catalyzed acylation of a variety of alcohols, phenols, and thiols was achieved in high yields under mild conditions (room temperature) in the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF(6)]). The ionic liquid and ruthenium catalyst can be recycled at least 10 times. Our system not only solves the basic problem of ruthenium catalyst reuse, but ...

Journal: :journal of reports in pharmaceutical sciences 0
gholamreza bahrami reza soltani seyed-ebrahim sajjadi mohammad-reza kanani reza naderi nastaran ghiasvand

chemical composition of the essential oil of the fruit of ferula assafoetida l. obtained by steam distillation solvent extraction methodhas been studied by gc/ms for the first time. fifty-four components, comprising 96.9% of the total oil, were identified.epi-α-cadinol (23.15 %), germacrene b (10.98 %), α-gurjunene (6.18 %), (z)-1-propenyl secbutyl disulfide (5.89 %), 5-epi-7-epi-α-eudesmol (4....

Journal: :ACS Applied Materials & Interfaces 2021

This work demonstrates the fabrication of surface-textured microcapsules formed from emulsion droplets, which are stabilized by an interlocking mesh needle-like crystals. Crystals small-organic-compound decane-1,10-bis(cyclohexyl carbamate) within geometric confinement through precipitation a binary-solvent-dispersed phase. binary mixture consists volatile solvent and nonvolatile carrier oil. C...

2015
A. Hassani

Traditional hydrodistillation (HD), steam distillation extraction (SD), organic solvent extraction (SE), and microwave assisted hydrodistillation (MWHD) techniques were compared and evaluated for their effectiveness in the isolation of essential oil of Melissa officinalis from Algeria. The microwave assisted hydrodistillation technique was optimized in terms of both delivered power and time dur...

Journal: :Cosmetics 2022

Cinnamon (Cinnamomum burmannii) is a potential source used in cosmetics to prevent skin aging due its flavonoids and antioxidant properties. This research aims determine the best solvent for extracting flavonoids, conduct large-scale isolation of evaluate effect ascorbic acid temperature on extract’s stability 16 weeks. Various solvents small-scale extraction were screened based polarity index,...

A comparative study of ultrasound-assisted extraction (UAE) and hydro-distillation was performed for fast extraction of estragole from tarragon (Artemisia dracunculus L.) dried leaves. Several influential parameters of the UAE procedure in the extraction of estragole (type of solvent, extraction cycles, solvent to material ratio, irradiation time and particle size) were investigated an...

2010
I. Jerković Z. Marijanović

Honey volatiles exhibit a potential role in distinguishing honeys as a function of botanical origin, but heating of honey generates artefacts such as compounds of Strecker degradation and Maillard reaction products. This short review is focused on the most recently applied methods for honey volatiles fingerprinting (without generation of thermal artefacts): headspace extraction (dynamic headspa...

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