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Immobilization of Chaga extract in alginate beads for modified release: simplicity meets efficiency

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2019
5012.pdf (452.1Kb)
Authors
Petrović, Predrag
Ivanović, Katarina
Octrue, Charly
Tumara, Mica
Jovanović, Aleksandra
Vunduk, Jovana
Nikšić, Miomir
Pjanović, Rada
Bugarski, Branko
Klaus, Anita
Article (Published version)
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Abstract
Chaga (Inonotus obliquus) is a parasitic fungus, which has been used in traditional medicine in Russia and other northern European countries in the treatment of cancer, gastrointestinal andliver diseases. It has been a subject of intensive researchrecently, confirming many of its health-beneficial effects. In order to obtain a product that would allow modified and prolonged release of the Chaga's active metabolites, hot water Chaga extract was immobilized using calcium - alginate. The extract, which was predominantly composed of carbohydrates (57 %), also contained a relatively high amount of antioxidants/phenolic compounds (130 mg gallic acid equivalents per g of dry extract) and exhibited pronounced radical scavenging activity. It showed significant antibacterial activity as well, inhibiting growth of tested bacterial strains at concentrations of 1.25-20 mg/mL. Entrapment efficiency was about 80 %, and the extract-alginate system showed pH-dependant extract release; there was negligi...ble release at pH 1.75 (gastric pH), and the release gradually increased with the increase in pH, reaching similar to 43 % of immobilized extract at pH 8.5 after 90 min. Such a product could be used as a dietary supplement, adjuvant in therapy of gastrointestinal diseases or as a food additive.

Keywords:
mushrooms / natural product / antioxidant / antimicrobial / encapsulation
Source:
HEMIJSKA INDUSTRIJA, 2019, 73, 5, 325-335
Publisher:
  • Savez hemijskih inženjera, Beograd
Funding / projects:
  • Novel encapsulation and enzyme technologies for designing of new biocatalysts and biologically active compounds targeting enhancement of food quality, safety and competitiveness (RS-46010)

DOI: 10.2298/HEMIND190819028P

ISSN: 0367-598X

WoS: 000496945300005

Scopus: 2-s2.0-85075240386
[ Google Scholar ]
URI
http://aspace.agrif.bg.ac.rs/handle/123456789/5015
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  • Radovi istraživača / Researchers’ publications
Institution/Community
Poljoprivredni fakultet

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