Please use this identifier to cite or link to this item: https://open.uns.ac.rs/handle/123456789/637
Title: Physical, sensorial and bioactive characteristics of white chocolate with encapsulated green tea extract
Authors: Lončarević, Ivana 
Pajin, Biljana 
Tumbas Šaponjac, Vesna 
Petrović, Jovana 
Vulić, Jelena 
Fišteš, Aleksandar 
Jovanović, Petar
Issue Date: Oct-2019
Publisher: Wiley
Journal: Journal of the Science of Food and Agriculture
Abstract: © 2019 Society of Chemical Industry BACKGROUND: Many studies have described cocoa polyphenols as being bioactive compounds with a potential positive effect on human health. Although dark chocolate is a most powerful source of antioxidants, their content is lower in milk chocolate; conversely, in white chocolate the fat-free cocoa solids are omitted. The aim of this study was to increase polyphenol content and antioxidant capacity of white chocolate by adding encapsulated green tea extract (GTE) in amounts of 60, 80 and 100 g kg−1. RESULTS: GTE influenced the particle size parameters, increasing the volume weighted mean from 15.43 μm in white chocolate to 19.34 μm in chocolate with 100 g kg−1 GTE. At the same time, the viscosity of enriched chocolate also increased owing to the addition of new solid particles. The surface color of enriched chocolates changed in accordance with the amount of encapsulate, where all enriched chocolates had a slightly lighter color after 12 months of storage. Total polyphenol content (mg gallic acid equivalents (GAE) kg−1) increased from 0.41 in white chocolate to 2.73 in chocolate enriched with maximal GTE. This amount of GTE increased antioxidant capacity (mmol Trolox equivalents kg−1) from 1.22 in white chocolate to 16.12. After 12 months of storage, degradation of polyphenols was found to be a maximum of 37.27%, while antioxidant capacity decreased up to 44.14%. CONCLUSION: In addition to the impact on chocolate viscosity, GTE added value through the polyphenol content and sensorial profile of the new product with an unusual green tea flavor and a shelf life of at least 12 months. © 2019 Society of Chemical Industry.
URI: https://open.uns.ac.rs/handle/123456789/637
ISSN: 00225142
DOI: 10.1002/jsfa.9855
Appears in Collections:TF Publikacije/Publications

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