Ultrasound-assisted formation of emulsions stabilized by biopolymers

Silva, Eric Keven; María, Rosa; Meireles, M. Ângela A.

doi:10.1016/j.cofs.2015.08.007

Cited by 51 publications

(17 citation statements)

References 51 publications

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“…Through pressure changes occurs the formation and collapse of microbubbles in the medium that result in microjetting. The microjetting generates effects such as surface peeling, erosion and particle breakdown [22,23], promoting different applications such as the extraction of different compounds [24], microbial and enzymatic inactivation [25], emulsion formation [26] and physical modifications [27]. Among the applications, UAEs have recently been increasingly studied for the acquisition of natural food colorants.…”

Section: Ultrasound Technologymentioning

confidence: 99%

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Specific Energy: A New Approach to Ultrasound-assisted Extraction of Natural Colorants

Strieder¹,

Silva²,

Meireles³

2019

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The demand for natural colorants has boosted the search for innovative technologies to obtain them. Ultrasound-assisted extraction (UAE) is one of the new green techniques that has been studied due to its process advantages that include high yields, short extraction times and nonutilization of elevated temperatures. However, a nonstandardization of the UAE variables complicates comparisons and hinders progress in the studies of this topic. In this review, the focus is the verification and discussion of which UAE process conditions authors have used to obtain natural colorants. Thus, it is possible to confirm that some authors used ultrasonic systems that are not appropriate for performing a good extraction, that some used a great amount of solvent and a long extraction time, and that researchers did not express the main variables (nominal power, extraction time and sample mass) as a function of the specific energy applied to processing. Therefore, it is possible to conclude that some studies using UAE were not conducted to obtain the best results, and the expression of the variables as a function of specific energy can generate a standardization, which facilitates comparison among the results obtained by the scientific community.

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Section: Ultrasound Technologymentioning

confidence: 99%

“…The UAE of natural colorants has been performed using a system with a probe (Figure 1-A) or a bath (Figure 1-B) [23,30].…”

Section: Ultrasonic Systemmentioning

confidence: 99%

Specific Energy: A New Approach to Ultrasound-assisted Extraction of Natural Colorants

Strieder¹,

Silva²,

Meireles³

2019

fph

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“…Ultrasound technology relies on mechanical waves at a frequency above the threshold of the human ear (> 16 kHz). With this method, it is possible to obtain fine emulsions, which transform into smaller, more stable emulsions than those produced by other conventional techniques (Silva, Rosa, & Meireles, 2015). It is one of the most effective methods for the preparation of nanoemulsions for research purposes in the food industry (Moghimi, Aliahmadi, McClements, & Rafati, 2016;Sugumar, Ghosh, Mukherjee, & Chandrasekaran, 2016).…”

Section: Ultrasonicationmentioning

confidence: 99%

“…It is one of the most effective methods for the preparation of nanoemulsions for research purposes in the food industry (Moghimi, Aliahmadi, McClements, & Rafati, 2016;Sugumar, Ghosh, Mukherjee, & Chandrasekaran, 2016). The dispersions produced by ultrasound are more stable, and the small droplets show an excellent particle size distribution (Silva et al, 2015). Because ultrasonication uses high-intensity waves to generate intense disturbing forces within mixtures of oil and water, it promotes a decrease in the droplet size (Ghosh, Mukherjee, & Chandrasekaran, 2014;Moghimi et al, 2016;Tan et al, 2016).…”

Section: Ultrasonicationmentioning

confidence: 99%

“…Proteins act as IJFS October 2019 Volume 8 pages 105-124 emulsifiers because of their amphiphilic characteristics, which confer the ability to adsorb at the oil-water interface and decrease interfacial tension. Polysaccharides, on the other hand, provide stability to emulsions mainly by increasing the viscosity of the continuous phase (Silva et al, 2015). Silva, Cerqueira, and Vicente (2012) listed the emulsifiers that have been used in the development of nanoemulsions.…”

Section: Materials Used In the Development Of Nanoemulsionsmentioning

confidence: 99%

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Development and incorporation of nanoemulsions in food

et al. 2019

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Currently, nanoencapsulation of bioactive compounds is promising, and is one of the methods that has been proven very effective. The development of food-grade nanoemulsions is in a state of constant innovation due to the interesting features that this method of encapsulation has, such as small droplet size, kinetic stability and appearance. With this technology, it is possible to control some food properties, such as texture, taste and stability. In this article, we present a review of the most commonly used methods in the creation of nanoemulsions, the recent developments of these dispersions, the relevant applications of nanoemulsions in food matrices, the most commonly used food-grade materials and the functionality of nanoemulsions, which are designed primarily to encapsulate compounds with biological activity. Nanoemulsions have been shown to be effective in preventing degradation and improving the bioavailability of bioactive compounds, such as oil-soluble vitamins, antimicrobials, flavours and antioxidants. At the end of this article, facts of interest about acceptance issues and nanotechnology regulatory policies in the food industry are presented.

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Aggregating particles on the O/W interface: Tuning Pickering emulsion for the enhanced drug delivery systems

Ming

Xia

2022

Aggregate

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The rational design of drug delivery systems has led to enhanced targeting, increased efficiency, and a reduction of side effects in chemotherapies and vaccines. As most biological reactions took place at the interface, particle-stabilized emulsion (Pickering emulsion), may offer major implications for the advanced drug loading, delivery, and controlled release. In fact, it is the aggregating particles that determined the multi-level structure, multi-valent cellular interactions, and the multi-functional physiochemical properties in drug delivery. A deeper understanding on the tunable aggregating patterns and properties, as well as the underlying mechanisms, may pave the way for the efficient drug delivery, and also aided the progressing of "Aggregology" beyond molecules to particles, emulsions, and the biomedical applications. Here, the recent development of Pickering emulsions and their applications in drug delivery were thoroughly reviewed. Strategies to control over the physiochemical properties were illustrated based on particle properties, energy input, and the choices of continuous and dispersion phases. In particular, enough emphasis was attached on the structure-effect relationship between the tunable physiochemical properties and the delivery process, such as the multi-level structure for effective loading, flexibility and permeability for enhanced delivery, and the stimuli-responsiveness for the controlled release. By channeling the unique interfacial properties and the enhanced drug delivery efficiency, this work may shed light on the rational design of Pickering emulsions for the efficient drug delivery.

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Ultrasound-assisted formation of emulsions stabilized by biopolymers

Cited by 51 publications

References 51 publications

Specific Energy: A New Approach to Ultrasound-assisted Extraction of Natural Colorants

Specific Energy: A New Approach to Ultrasound-assisted Extraction of Natural Colorants

Development and incorporation of nanoemulsions in food

Aggregating particles on the O/W interface: Tuning Pickering emulsion for the enhanced drug delivery systems

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