Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/8478
Title: Clarification and pasteurisation effects on monomeric anthocyanins and percent polymeric colour of black carrot (Daucus carota L.) juice
Authors: Türkyilmaz, M.
Yemiş, Oktay
Özkan, M.
Keywords: Anthocyanin
Black carrot juice
Fining
Pasteurisation
Polymeric colour
Carrot juice
Daucus carota
HPLC-MS
Bentonite
Clarifiers
Color
Pasteurization
Polymers
Anthocyanins
anthocyanin
bentonite
gelatin
article
black carrot juice
carrot
controlled study
food
food color
high performance liquid chromatography
nonhuman
Beverages
Hot Temperature
Abstract: Black carrots (BCs) are a rich source of stable anthocyanins (ACNs). The purpose of this study was to evaluate the effects of clarification and pasteurisation on ACNs of black carrot juice (BCJ). Monomeric ACNs, ACN profile and percent polymeric colour were determined during processing of BCJ. While depectinisation and bentonite treatments resulted in 7% and 20% increases in monomeric ACN content of BCJ, respectively, gelatine-kieselsol treatment and pasteurisation resulted in 10% and 3-16% reduction. Percent polymeric colour decreased after clarification, but substantially increased in samples subjected to heat. ACNs of BCJ samples were identified by HPLC-MS. Unclarified BCJ contained cyanidin-3-galactoside-xyloside-glucoside-ferulic acid as the major ACN, followed by cyanidin-3-galactoside-xyloside-glucoside-coumaric acid, and cyanidin-3-galactoside-xyloside-glucoside. After depectinisation, two more ACNs (cyanidin-3-galactoside-xyloside and cyanidin-3-galactoside-xyloside-glucoside- sinapic acid) were also identified. These results indicated that depectinisation and bentonite treatment had positive effect on the colour of BCJ, while gelatin-kieselsol treatment and pasteurisation had negative effect. © 2012 Elsevier Ltd. All rights reserved.
URI: https://hdl.handle.net/11499/8478
https://doi.org/10.1016/j.foodchem.2012.03.013
ISSN: 0308-8146
Appears in Collections:Mühendislik Fakültesi Koleksiyonu
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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