Low-energy Emulsion

Low-energy emulsion is a formulation approach that produces finely dispersed droplets using changes in composition, interfacial tension, or phase behavior rather than intensive mechanical mixing. During spontaneous emulsification or phase inversion, surfactants lower interfacial tension and controlled addition of an aqueous or oil phase drives the system toward a stable emulsion with relatively low energy input. In immunology and infection research, these emulsions can help formulate vaccine antigens, adjuvants, antimicrobial compounds, or biological delivery systems by improving dispersion and handling. Their composition, droplet size, stability, and compatibility with immune-active ingredients influence performance and may support more efficient experimental formulation and evaluation.

Low-energy Emulsion - Related Videos

Research

JoVE EoE - Immune Systems and Components

Preparing an Antigen-Adjuvant Emulsion to Induce Autoimmune Encephalomyelitis

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2025

This video demonstrates an efficient homogenization technique to generate an antigen-adjuvant emulsion to induce experimental autoimmune encephalomyelitis (EAE) in a murine model. The emulsion contains an autoantigen — myelin oligodendrocyte glycoprotein (MOG) — in the water phase, surrounded by a continuous oil phase comprising an inactivated pathogenic bacteria. The emulsion ensures a sustained release of antigens for a prolonged immune response.

Minimum Burning Pressures of Water-based Emulsion Explosives

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2017

We present an apparatus based on hot-wire ignition in a pressurized enclosure and an associated methodology to measure the minimum pressure required to induce sustained combustion in water-based emulsion explosives. This method improves product characterization to allow one to use them more safely during pumping and mixing operations.

Research

JoVE Journal - Biology
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Reconstitution of Basic Mitotic Spindles in Spherical Emulsion Droplets

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Cited by 19 •

2016

The assembly and positioning of the mitotic spindle depend on the combined forces generated by microtubule dynamics, motor proteins and cross-linkers. Here we present our recently developed methods in which the geometrical confinement of spherical emulsion droplets is used for the bottom-up reconstitution of basic mitotic spindles.

Education

JoVE Core - Chemistry

What is Energy?

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2020

The universe is composed of matter in different forms, and all forms of matter contain energy. The different forms of energy on Earth originate from the Sun — the ultimate energy source. Plants capture light energy from the Sun, and, via the process of photosynthesis, convert it into chemical energy. This stored energy from plants can be harnessed in many ways. For example, eating plant products as food provides energy for our body to function, and burning wood or coal (fossilized plants)...

PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS

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Cited by 211 •

2013

We describe the production and characterization of nanoparticles and microparticles composed of poly(lactic-co-glycolic acid) using vitamin E-TPGS as an emulsifier. By varying formulation parameters such as the concentration of emulsifier, it is possible to produce nanoparticles with mean diameters ranging from 220 nm to 1.98 µm.

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