Effect of centrifugal force (G) on stability of natural emulsions (water/oil) present in fresh virgin olive oils

Gila, Abraham; Aguilera, María P.; Sánchez‐Ortíz, Araceli; Jiménez, Antonio; Beltrán, Gabriel

doi:10.1016/j.jfoodeng.2022.111169

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…The selection of centrifugation time also plays a crucial role in the extraction process by eliminating emulsification via high-speed centrifugal separation, effectively separating the organic phase from the aqueous phase [ 39 ]. In this study, we examined five levels of centrifugation time (5 min, 10 min, 15 min, 20 min and 25 min).…”

Section: Resultsmentioning

confidence: 99%

Determination of Flavonoid Compounds in Shanxi Aged Vinegars Based on Hydrophobic Deep Eutectic Solvent VALLME-HPLC Method: Assessment of the Environmental Impact of the Developed Method

et al. 2023

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This research presents a novel, eco-friendly, vortex-assisted liquid–liquid microextraction (VALLME) approach, integrating hydrophobic deep eutectic solvents (DESs) with HPLC for the identification and quantification of nine specific flavonoids in Shanxi aged vinegar (SAV). The parameters of DES-VALLME, including the ratio of trioctylmethylammonium chloride to 1,4-butanediol (1:6), DES volume (150 μL), vortex duration (5 min), the concentration of NaCl (0.40 g), and centrifugation time (10 min), were optimized to achieve the maximum extraction efficiency of target substances. Under these optimal conditions, quantitative analyses performed via HPLC demonstrated a broad linear range of 0.20–50.00 μg/mL and correlation coefficients (r2) greater than 0.9944 for all nine calibration curves. The limits of detection (LOD) and limits of quantitation (LOQ) were 0.09–0.18 μg/mL and 0.30–0.60 μg/mL, respectively, ensuring high sensitivity. The relative standard deviations for intra-day and inter-day variability were within the acceptable range, 2.34–3.77% and 3.04–4.96%, respectively, demonstrating the method’s reliability. The recovery rates ranged from 85.97% to 108.11%, underscoring the method’s precision. This technique exhibited a significant enrichment effect (enrichment factor: 43 to 296) on SAV flavonoids. Notably, the eco-friendliness of this procedure was evaluated using the Analytical Eco-Scale, Green Analytical Procedure Index, and Analytical Greenness Metric. The results suggested that this technique is a viable green alternative to traditional flavonoid determination methods in SAV. In summary, this novel method provides a theoretical basis for assessing flavonoid content in SAV samples and tracing SAV products. This contribution has significant implications for enhancing analytical techniques in food chemistry and environmental science and the sustainable development of the food industry.

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Section: Resultsmentioning

confidence: 99%

Determination of Flavonoid Compounds in Shanxi Aged Vinegars Based on Hydrophobic Deep Eutectic Solvent VALLME-HPLC Method: Assessment of the Environmental Impact of the Developed Method

et al. 2023

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“…The increase in the temperature did not provoke signi cant differences in the mean droplet size of the MEs because the change in the temperature does not lead to the modi cation of the continuous phase. The MEs droplet size decreased under heating conditions may be caused by the surface activity of surfactin increasing at high temperatures, so it is more conducive to the stabilization of the MEs and formation smaller droplets [43].…”

Section: Rheology Of Mesmentioning

confidence: 99%

Microemulsions constructed by a biosurfactant

Han,

Ma,

Zhang

et al. 2024

Preprint

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Due to their biodegradability and low toxicity, biosurfactants have been recently attracted much attention. Here, microemulsions (MEs) are constructed by an excellent biosurfactant, surfactin, via low energy emulsification. Rheological properties, kinetic stability, thermodynamic stability, and long-term storage capacity of microemulsions were characterized. The effect of pH and different gelling agents on the phase behavior and the formation of microemulsion-gels was also explored. Results reveal that the MEs show no significant change in droplet size under high-speed centrifugation, providing great kinetic stability, which enables the MEs to maintain their stability under bumpy and rugged transportation conditions. The MEs are thermodynamically stable and can be restored to their original state after experiencing extreme conditions such as high temperature (58℃) or freeze-thawing cycles, facilitating the use of the MEs under extreme conditions and promoting the shelf-life of production. The addition of different gelling agents did not show any significant changes to MEs and not disrupt the formation of the MEs, meaning that the MEs constructed by surfactin are stable and possess antioxidant potential and moisturizing effects.

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“…In recent years, frequent oil spills and the industrial discharges of oily wastewater have caused incalculable harm to the ecological environment and human health. [1][2][3][4] Commonly used oil-water separation techniques, such as skimming, 5 absorption, 6 air otation, 7 centrifugation, 8 and chemical coagulation, 9 have disadvantages, such as low separation efficiency, high energy consumption, complex operation processes, and existence of secondary pollution. [10][11][12] Therefore, it is of great importance to develop green and efficient oil/water separation methods.…”

Section: Introductionmentioning

confidence: 99%

Preparation of two kinds of membranes with reverse wettability from waste masks for continuous oil/water separation

Ning

Liu

Luo

et al. 2023

Environ. Sci.: Adv.

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Effect of centrifugal force (G) on stability of natural emulsions (water/oil) present in fresh virgin olive oils

Cited by 7 publications

References 20 publications

Determination of Flavonoid Compounds in Shanxi Aged Vinegars Based on Hydrophobic Deep Eutectic Solvent VALLME-HPLC Method: Assessment of the Environmental Impact of the Developed Method

Determination of Flavonoid Compounds in Shanxi Aged Vinegars Based on Hydrophobic Deep Eutectic Solvent VALLME-HPLC Method: Assessment of the Environmental Impact of the Developed Method

Microemulsions constructed by a biosurfactant

Preparation of two kinds of membranes with reverse wettability from waste masks for continuous oil/water separation

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