Related Experiment Video
Updated: Feb 2, 2026

Extraction of Plant-based Capsules for Microencapsulation Applications
Published on: November 9, 2016
Microencapsulation of garlic oil by β‑cyclodextrin as a thermal protection method for antibacterial action
Raquel Piletti1, Micheli Zanetti2, Guilherme Jung2
1Post-Graduate Program in Chemical Engineering, Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-900, SC, Brazil.
Abstract:
The present study investigated the encapsulation process of garlic oil in β‑cyclodextrin (βCD) and the antibacterial properties of the βCD-garlic oil complex against Escherichia coli and Staphylococcus aureus. The encapsulation method increased the thermal stability of garlic oil with a formation constant (Kc) value of 253.78 L·mol-1 for of the βCD-garlic oil complex, which confirmed the success of the encapsulation process. Scanning electron microscopy analysis showed that the dimensions of the structures formed by the inclusion complex of βCD-garlic oil had values ranging from 5 to 10 μm. After thermal treatment of the βCD-garlic oil complex at 60 °C for 1 h, the complex retained significant antibacterial action. The minimum inhibitory concentration (MIC) and agar diffusion results showed that the microcapsules containing 81.73 mmol·L-1 garlic oil exhibited excellent antibacterial action.
Related Concept Videos
Antihypertensive Drugs: Action of β1 Blockers
Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers
The Scientific Method
Generally, predictions are tested using carefully-designed experiments. Based on the outcome of these...
Fixed Action Patterns
Surface Tension, Capillary Action, and Viscosity
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
Thermal expansion and Thermal stress: Problem Solving
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...

