PREPARATION AND STABILITY OF ORGANIC CORE-SHELL PARTICLES WITH ENCAPSULATED COMPLEX NATURAL PLANT SOURCES OF PHENOLICS, CAFFEINE AND VITAMINS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F15%3APU136127" target="_blank" >RIV/00216305:26310/15:PU136127 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

PREPARATION AND STABILITY OF ORGANIC CORE-SHELL PARTICLES WITH ENCAPSULATED COMPLEX NATURAL PLANT SOURCES OF PHENOLICS, CAFFEINE AND VITAMINS

Original language description

Presented work is focused on possibilities of encapsulation some complex natural sources of phenolics, caffeine and vitamins in core-shell type organic micro- and nanoparticles. Encapsulation of these substances is suitable to controlled release of caffeine and for disguising of bitter taste of phenolics. Water extracts of guarana, ginseng and goji were prepared and the concentrations of phenolics, anthocyanin, caffeine and vitamin C were evaluated. Extracts were packed into liposomes and polysaccharide particles (alginate, chitosan) using encapsulator B-392P (Buchi) or manual procedures. The efficiency of encapsulation was determined by HPLC/UV-VIS (individual phenolics - rutin, morin, myricetin, luteolin; caffeine, vitamin C) and by spectrophotometry (phenolics). Stability of the particles was followed in model/real foods and in a model physiological environment. Size of prepared particles was determined by dynamic light scattering. In this work it was found that polysaccharide particles with higher activity and stability were obtained by encapsulator, while in the liposomes better results were obtained in manually prepared particles. Liposomes exhibited the smallest particle size (80 - 200 nm), the highest efficiency encapsulation, excellent stability and the best value of zeta potential (-40 mV). Polysaccharide particles prepared manually were smaller (500 - 3000 nm) and less stable than core-shell microparticles formed by encapsulator (diameter 200 and 300 mm). Prepared particles could be used to modern types of energy drinks, food supplements and also some cosmetics applications.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

21001 - Nano-materials (production and properties)

Project

<a href="/en/project/LO1211" target="_blank" >LO1211: Materials Research Centre at FCH BUT- Sustainability and Development</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

NANOCON 2014, 6TH INTERNATIONAL CONFERENCE

ISBN

978-80-87294-53-6

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

569-574

Publisher name

TANGER

Place of publication

Ostrava, Czech republic

Event location

Brno

Event date

Nov 5, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000350636300098