Nanoparticles Size Determination by Dynamic Light Scattering in Real (Non-standard) Conditions Regulators - Design, Tests and Applications

Jarzębski, Maciej; Siejak, Przemysław; Sawerski, Arkadiusz; Stasiak, Maksymilian; Ratajczak, Kamil; Masewicz, Łukasz; Polewski, Krzysztof; Fathordoobady, Farahnaz; Guo, Yigong; Pratap-Singh, Anubhav

doi:10.1007/978-3-030-39867-5_13

Cited by 6 publications

(7 citation statements)

References 17 publications

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“…Furthermore, based on the principles of the dynamic light scattering (DLS) method used herein and apparatus limitations, we chose to round droplet size numbers up to a full number. Moreover, based on previous experience from studies with different high-PDI systems [ 35 ], we considered droplet/particle size by intensity and number. Detailed studies of droplet size distributions clearly showed that even a small fraction of larger particles/droplets or accidental contaminations impacted the Z-ave and size distribution.…”

Section: Resultsmentioning

confidence: 99%

Whey Proteins as a Potential Co-Surfactant with Aesculus hippocastanum L. as a Stabilizer in Nanoemulsions Derived from Hempseed Oil

et al. 2021

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The use of natural surfactants including plant extracts, plant hydrocolloids and proteins in nanoemulsion systems has received commercial interest due to demonstrated safety of use and potential health benefits of plant products. In this study, a whey protein isolate (WPI) from a byproduct of cheese production was used to stabilize a nanoemulsion formulation that contained hempseed oil and the Aesculus hippocastanum L. extract (AHE). A Box–Behnken experimental design was used to set the formulation criteria and the optimal nanoemulsion conditions, used subsequently in follow-up experiments that measured specifically emulsion droplet size distribution, stability tests and visual quality. Regression analysis showed that the concentration of HSO and the interaction between HSO and the WPI were the most significant factors affecting the emulsion polydispersity index and droplet size (nm) (p < 0.05). Rheological tests, Fourier transform infrared spectroscopy (FTIR) analysis and L*a*b* color parameters were also taken to characterize the physicochemical properties of the emulsions. Emulsion systems with a higher concentration of the AHE had a potential metabolic activity up to 84% in a microbiological assay. It can be concluded from our results that the nanoemulsion system described herein is a safe and stable formulation with potential biological activity and health benefits that complement its use in the food industry.

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Section: Resultsmentioning

confidence: 99%

Whey Proteins as a Potential Co-Surfactant with Aesculus hippocastanum L. as a Stabilizer in Nanoemulsions Derived from Hempseed Oil

et al. 2021

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“…After 24 h from the time of homogenization, all samples showed homogeneity, completely constituting the emulsion layer. Hence, EI24h (emulsification index determined after 24 h) can be taken as 100% for all samples, except the sample without saponins, Based on our previous experience [10,41], we decided to present droplet size distribution by intensity, number and volume ratio ( Figure 3). In our previous work [10] we suggested that during the DLS results analysis, the intensity of scattered light by particles should be considered for nanoparticles or droplet size characterization.…”

Section: Emulsion Stabilitymentioning

confidence: 99%

“…Hence, EI24h (emulsification index determined after 24 h) can be taken as 100% for all samples, except the sample without saponins, Based on our previous experience [10,41], we decided to present droplet size distribution by intensity, number and volume ratio ( Figure 3). In our previous work [10] we suggested that during the DLS results analysis, the intensity of scattered light by particles should be considered for nanoparticles or droplet size characterization. One of the reasons for this is that the presence of even a few large particles (possible contaminations or samples with high PDI index) strongly affects the average particle's diameter.…”

Section: Emulsion Stabilitymentioning

confidence: 99%

“…McClements defined an oil-in-water (O/W) nanoemulsion as a thermodynamically unstable colloidal dispersion, consisting of two immiscible liquids where the dispersed droplets have spherical shape [9]. Droplet size has been proposed as one way of differentiating between microemulsions and nanoemulsions, wherein emulsions with a droplet radius (R) smaller than 100 nm are often classified as nanoemulsions [10]. Nanoemulsions are commonly prepared by dispersing the two immiscible liquids using high-energy mixing equipment, such as high-speed mixers and homogenizers [11].…”

Section: Introductionmentioning

confidence: 99%

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Plant Extracts Containing Saponins Affects the Stability and Biological Activity of Hempseed Oil Emulsion System

et al. 2020

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In this study, two saponins-rich plant extracts, viz. Saponaria officinalis and Quillaja saponaria, were used as surfactants in an oil-in-water (O/W) emulsion based on hempseed oil (HSO). This study focused on a low oil phase content of 2% v/v HSO to investigate stable emulsion systems under minimum oil phase conditions. Emulsion stability was characterized by the emulsification index (EI), centrifugation tests, droplet size distribution as well as microscopic imaging. The smallest droplets recorded by dynamic light scattering (droplets size v. number), one day after the preparation of the emulsion, were around 50–120 nm depending the on use of Saponaria and Quillaja as a surfactant and corresponding to critical micelle concentration (CMC) in the range 0–2 g/L. The surface and interfacial tension of the emulsion components were studied as well. The effect of emulsions on environmental bacteria strains was also investigated. It was observed that emulsions with Saponaria officinalis extract exhibited slight toxic activity (the cell metabolic activity reduced to 80%), in contrast to Quillaja emulsion, which induced Pseudomonas fluorescens ATCC 17400 growth. The highest-stability samples were those with doubled CMC concentration. The presented results demonstrate a possible use of oil emulsions based on plant extract rich in saponins for the food industry, biomedical and cosmetics applications, and nanoemulsion preparations.

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“…In the same material with crystalline phases, the diffraction pattern is also different. Therefore, by studying the angle at which the XRD peaks are formed ( Figure 1 b) and the relative intensity of each peak, the type of materials and their phase can be qualitatively identified; amorphous materials do not form specific peaks, while crystalline materials that have a regular structure create specific peaks at certain angles Jarzebski et al [ 26 ] suggested that for the DLS analysis, the intensity of scattered light by particles is of utmost importance for nanoemulsion characterization. The reason could be due to the presence of some large particles that strongly affect the average particle’s diameter.…”

Section: Resultsmentioning

confidence: 99%

Corn Starch-Chitosan Nanocomposite Film Containing Nettle Essential Oil Nanoemulsions and Starch Nanocrystals: Optimization and Characterization

et al. 2021

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In the current study, nanocomposite films were produced based on corn starch:chitosan (CS:CH) biopolymers and the films were reinforced with nettle essential oil nanoemulsions (NEONEs) and starch nanocrystals (SNCs) to improve their physicochemical and mechanical properties. CS: CH at 70:30, 50:50, and 30:70 (w/w) ratios; SNCs at 2, 4, and 6% (w/w), and NEONEs at 0.5, 1, and 1.5% (w/w) were selected as variables. Then the various physical and mechanical attributes of chitosan-starch blended film containing SNCs and NEONEs were optimized using response surface methodology. The desirability function technique for the second-order polynomial models revealed that the following results could be achieved as the optimized treatment: water solubility of 51.56%; water absorption capacity of 128.75%; surface color of L (89.60), a (0.96), and b (1.90); water vapor permeability of 0.335 g/s Pa m, oxygen permeability of 2.60 cm3 μm/m2 d kPa; thickness of 154.41 µm, elongation at break of 53.54%; and tensile strength of 0.20 MPa at CS:CH of 38:62, SNC of 6.0%, and NEONEs of 0.41%. The nanocomposite film obtained can be employed as a novel biofunctional film with boosted physical mechanical and physical characteristics for food packaging applications.

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Nanoparticles Size Determination by Dynamic Light Scattering in Real (Non-standard) Conditions Regulators - Design, Tests and Applications

Cited by 6 publications

References 17 publications

Whey Proteins as a Potential Co-Surfactant with Aesculus hippocastanum L. as a Stabilizer in Nanoemulsions Derived from Hempseed Oil

Whey Proteins as a Potential Co-Surfactant with Aesculus hippocastanum L. as a Stabilizer in Nanoemulsions Derived from Hempseed Oil

Plant Extracts Containing Saponins Affects the Stability and Biological Activity of Hempseed Oil Emulsion System

Corn Starch-Chitosan Nanocomposite Film Containing Nettle Essential Oil Nanoemulsions and Starch Nanocrystals: Optimization and Characterization

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