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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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