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Bibliographic record number: 506367

Journal

Authors: Belščak-Cvitanović, Ana; Stojanović, Radoslava; Manojlović, Verica; Komes, Draženka; Juranović Cindrić, Iva; Nedović, Viktor; Bugarski, Branko
Title: Encapsulation of polyphenolic antioxidants from medicinal plant extracts in alginate-chitosan system enhanced with ascorbic acid by electrostatic extrusion
Source: Food research international (0963-9969) 44 (2011), 4; 1094-1101
Paper type: article
Keywords: alginate; ascorbic acid; chitosan; encapsulation; medicinal plants; polyphenols
Abstract:
Medicinal herbs possess a wide spectrum of biological activities and exhibit numerous pharmacological effects which makes them the ideal candidates for novel drugs. The design of new and improvement of existing controlled release delivery systems for polyphenolic antioxidants has become an important focus both in the scientific community and industry. In this study the encapsulation of raspberry leaf, hawthorn, ground ivy, yarrow, nettle and olive leaf extracts was performed by electrostatic extrusion in alginate-chitosan based microbeads, with ascorbic acid being used for the dissolution of chitosan. The plant extracts were characterized for their polyphenol content and composition, mineral content and antioxidant capacity. Raspberry leaf encapsulating microbeads exhibited the highest total phenol content and antioxidant capacity, followed by hawthorn, while olive leaf microbeads contained the lowest total phenol content. High encapsulation efficiency was obtained for all plant extracts (80.88-89.39%), except nettle which was characterized by the largest particle size and irregular particle shape, due to a high content of microelements (copper, strontium, zinc) which affected the gel structure of alginate. Although the antioxidant stability of hydrogel microcapsules was deteriorated during refrigerated storage, which might be attributed to the instability of ascorbic acid, the obtained microbeads encapsulating polyphenolic antioxidants derived from medicinal plants and enhanced by ascorbic acid, deliver significant biological activity and antioxidant potential which may increase the daily intake of antioxidants.
Project / theme: 119-1191342-1083, 058-0000000-3470
Original language: ENG
Citation databases: Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Category: Znanstveni
Research fields:
Chemistry,Biotechnology,Food processing technology
URL: http:///www.sciencedirect.com/science?_ob=MImg&_imagekey=B6T6V-52F6PCC-6-1&_cdi=5040&_user=3875467&_pii=S0963996911001876&_origin=browse&_coverDate=05%2F31%2F2011&_sk=999559995&view=c&wchp=dGLbVzW-zSkzk&md5=445c4558e0434611d3bc7d470d9ab812&ie=/sdarticle.pdf
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T6V-52F6PCC-6&_user=3875467&_coverDate=05%2F31%2F2011&_rdoc=37&_fmt=high&_orig=browse&_origin=browse&_zone=rslt_list_item&_srch=doc-info(%23toc%235040%232011%23999559995%233177750%23FLA%23display%23Volume)&_cdi=5040&_sort=d&_docanchor=&_ct=39&_acct=C000050661&_version=1&_urlVersion=0&_userid=3875467&md5=80f885e0a0cddcbeb8901542b27dad48&searchtype=a
Broj citata:
Altmetric:
DOI: 10.1016/j.foodres.2011.03.030
URL cjelovitog rada:
Google Scholar: Encapsulation of polyphenolic antioxidants from medicinal plant extracts in alginate-chitosan system enhanced with ascorbic acid by electrostatic extrusion
Contrib. to CROSBI by: ijuranovic.chem@pmf.hr (ijuranovic.chem@pmf.hr), 16. Ožu. 2011. u 13:28 sati



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