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.
International Journal of Biological Macromolecules – Elsevier
Published: Jul 1, 2019
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera