Alginate-based encapsulation of polyphenols from Clitoria ternatea petal flower extract enhances stability and biological activity under simulated gastrointestinal conditions

Porntip Pasukamonset, Oran Kwon, Sirichai Adisakwattana

Research output: Contribution to journalArticlepeer-review

132 Scopus citations

Abstract

Microencapsulation of phenolic extracts of Clitoria ternatea (CT) petal flower extract through extrusion method of alginate with calcium chloride (CaCl2) was studied. Encapsulation efficiency varied in the range from 74.17 ± 0.83% to 84.87 ± 0.29% depending on the percentage of CT (5–20%), alginate (1–2%), and CaCl2 (1.5–5%). The results showed that the optimized condition of CT-loaded alginate beads (CT beads) was as follows: 10% CT, 1.5% alginate, and 3% CaCl2 (w/v). Under this condition, the maximal antioxidant capacity of 11.76 ± 0.07 mg gallic acid equivalent/gbeads and the encapsulation efficiency of 84.83 ± 0.40% were obtained. The microencapsulation was found to have smooth surface shape with a particle size distribution of 985 ± 0.53 μm and improve the thermal stability with 188 °C. There was the absence of chemical interactions between CT and alginate as verified by using FT-IR. The microencapsulation of CT significantly retains higher amount of polyphenols and improves antioxidant capacity, pancreatic α-amylase inhibitory activity, and bile acid binding after the gastrointestinal digestion. This study provides a novel food-grade encapsulation formulation to improve the stability as well as the biological activity of plant polyphenols.

Original languageEnglish
Pages (from-to)772-779
Number of pages8
JournalFood Hydrocolloids
Volume61
DOIs
StatePublished - 1 Dec 2016

Bibliographical note

Funding Information:
We would like to thank the Overseas Research Experience Scholarship for Graduate Student, Graduate school and Faculty of Allied Health Sciences, Chulalongkorn University and the 90 th Anniversary of Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund). This research was supported by Grant for International Research Integration: Chula Research Scholar, Ratchadaphiseksomphot Endowment Fund.

Publisher Copyright:
© 2016 Elsevier Ltd

Keywords

  • Alginate
  • Clitoria ternatea
  • Digestion
  • Encapsulation
  • Polyphenols

Fingerprint

Dive into the research topics of 'Alginate-based encapsulation of polyphenols from Clitoria ternatea petal flower extract enhances stability and biological activity under simulated gastrointestinal conditions'. Together they form a unique fingerprint.

Cite this