Epidemiology

Krickeberg, Klaus; Pham, Van Trọng; Pham, Thi My Hanh

doi:10.1007/978-1-4614-1205-2

Cited by 6 publications

(8 citation statements)

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“…Considering the potential cosurfactants, neutral vegetable glycerol has been selected, as it had been used in the past instead of water for further improvement of the bioactive molecule protection and solubility. 53,54 To select an oil with the best performance for the creation of stable O/W MEs, three different oils were studied: lemon oil, ispropyl myristate (IPM), and isoamyl acetate (IAAc).…”

Section: Resultsmentioning

confidence: 99%

Low-Energy Encapsulation of α-Tocopherol Using Fully Food Grade Oil-in-Water Microemulsions

et al. 2018

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Encapsulation of active agents, such as vitamins and antioxidants, is one of the possibilities that allow their incorporation in beverages, food, or in pharmaceutical products. Simultaneously, encapsulation protects these active agents from oxidation, producing more stable active compounds. Formation of nanodroplets by spontaneously formed microemulsion (ME) offers, on one hand, a low-energy technology of encapsulation and, on the other hand, because of a small size of the droplets, it assures long-term stability even in harsher environments. In this study, oil-in-water MEs allowed the low-energy encapsulation of α-tocopherol (αToc) into an aqueous medium with the aid of fully food-grade ingredients, using isoamyl acetate as the dispersed oil phase, which was selected between three different types of oils. Both cosurfactant-free and cosurfactant-holder ME systems were formulated, in which Tween 20 and glycerol were employed as the surfactant and the cosurfactant, respectively. The ME monophasic area was determined through the construction of pseudoternary phase diagrams. The encapsulated αToc within 10–20 nm nanocapsules showed radical scavenging activity dependent on the encapsulated amount of αToc, as it was demonstrated by electron paramagnetic resonance spectroscopy. The radical scavenging activity slightly increased within the time investigated, indicating a slow release of the active compound from the nanodroplets, which is a promising result for their application, especially in pharmaceuticals.

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Section: Resultsmentioning

confidence: 99%

Low-Energy Encapsulation of α-Tocopherol Using Fully Food Grade Oil-in-Water Microemulsions

et al. 2018

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“…In the clinical context, several periods in the evolution of a case were determined (see their definition in [KPP,Sect. 5.2]): The median incubation period is 5.2 days; the mean latency period is 4.6 days, i.e., in general the infectious period starts indeed before the prodromal phase.…”

Section: The New Virus Sars-cov-2mentioning

confidence: 99%

“…Dozens of serologic tests of varying quality have been and still are developed and even offered in some countries to the general public. Recall that the characterization of a test with a given target population and a given objective is a classical subject of clinical epidemiology [KPP,Sect. 19.2].…”

Section: The New Virus Sars-cov-2mentioning

confidence: 99%

“…Here the idea of "controlling" for the influence of another factor, which might be a "confounder" in the study of the action of E , plays a role. It looks as if most demographers on the one hand, and most clinical epidemiologists on the other, ignore that the mathematical procedure of standardizing is the same as that of controlling for a confounder [KPP,Lesson 21]. A mathematician will not be astonished, though!…”

Section: Advanced Demographymentioning

confidence: 99%

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Dynamics and Control of Covid-19: Comments by Two Mathematicians

Booss-Bavnbek

Krickeberg

2020

EMS Newsl.

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“…However, it was the year 1959, when Shulman et al [3] coined the term called "microemulsion." A microemulsion is a macroscopically homogeneous system and possesses spherical droplets of the size <50 nm that do not require the higher input of energy and shear reaction conditions, in contrast to conventional emulsions, which are cloudy, kinetically stable and thermodynamically unstable systems [4]. Microemulsions can be considered akin to micellar solutions that solubilize the oil domain into the nonpolar surfactant tail region to give stable microstructure.…”

Section: Introductionmentioning

confidence: 99%

Microemulsions as Nanotemplates: A Soft and Versatile Approach

Kanwar¹,

Rathee²,

Patil³

et al. 2018

Microemulsion - A Chemical Nanoreactor [Working Title]

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Template efficacy of microemulsions in generating nanoparticles has garnered considerable attention in the world of colloidal science. A microemulsion is an optically isotropic and thermodynamically stable colloidal dispersion, which possess spherical droplets (either of W/O or O/W) of the size <50 nm. In microemulsions, the spontaneous formation of domains of nanometric dimensions significantly facilitates their exploitation as potential nanoreactors for the production of stable nanoparticles (due to their cost-effectiveness and ease of preparation). The present chapter provides an overview of microemulsions as efficient nanotemplates, with a detailed account of plausible nanomaterials, i.e., metallic nanoparticles, quantum dots, polymeric nanoparticles, mesoporous silica nanoparticles, solid lipid nanoparticles, nanostructured lipid carriers, etc. Based on the high surface area, good crystallinity, controllable particle size, outstanding catalytic, and magnetic properties, the exploitation of nanoparticles as efficient catalysts and drug delivery modules has also been highlighted.

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Epidemiology

Cited by 6 publications

References 0 publications

Low-Energy Encapsulation of α-Tocopherol Using Fully Food Grade Oil-in-Water Microemulsions

Low-Energy Encapsulation of α-Tocopherol Using Fully Food Grade Oil-in-Water Microemulsions

Dynamics and Control of Covid-19: Comments by Two Mathematicians

Microemulsions as Nanotemplates: A Soft and Versatile Approach

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