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Electrosprayed octenyl succinic anhydride starch capsules for rosemary essential oil encapsulation.

08:00 EDT 27th March 2019 | BioPortfolio

Summary of "Electrosprayed octenyl succinic anhydride starch capsules for rosemary essential oil encapsulation."

Octenyl succinic anhydride starch (OSA-starch) is often used as an emulsifier to protect bioactive compounds such as essential oils. In this study, rosemary essential oil was encapsulated in OSA-starch capsules via electrospraying an emulsion. Creaming was observed in the emulsions with 40% ethanol (v/v) 2 h after preparation, and phase separation occurred after 4 days. The emulsion with 20% ethanol revealed smaller droplets and lower zeta potential, and remained stable for 7 days. The morphology, loading capacity (LC), and encapsulation efficiency (EE) of the capsules, electrosprayed from the emulsions, were evaluated. The capsules from 20 and 30% aqueous ethanol (v/v) were smooth and spherical in shape with few dimpled. EE values were higher in the emulsions with 20% ethanol (82%-98%) when compared to those with 30% ethanol (89%-96%), except when 30% oil content was used. Fourier-transform infrared spectrometry suggested interaction of essential oil with the wall material. In summary, OSA-starch produced a stable emulsion that was suitable for electrospraying into capsules.

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This article was published in the following journal.

Name: International journal of biological macromolecules
ISSN: 1879-0003
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Medical and Biotech [MESH] Definitions

An envelope of loose gel surrounding a bacterial cell which is associated with the virulence of pathogenic bacteria. Some capsules have a well-defined border, whereas others form a slime layer that trails off into the medium. Most capsules consist of relatively simple polysaccharides but there are some bacteria whose capsules are made of polypeptides.

A class of dicarboxylic acids with the general structure of butanedioic acid (succinic acid). They are used in perfumery and as a chemical intermediate in medicine.

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Anhydride polymers with a repeating structure of RC(=O)OC(=O)R. They readily hydrolyze in water making them useful for DELAYED-ACTION PREPARATIONS.

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