کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7591409 | 1492106 | 2015 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chlorogenic acid-arabinose hybrid domains in coffee melanoidins: Evidences from a model system
ترجمه فارسی عنوان
دامنه های هیبریدی کلرژنیک اسید-عربینو در ملانوئیدین قهوه: شواهد از یک سیستم مدل
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Arabinose from arabinogalactan side chains was hypothesized as a possible binding site for chlorogenic acids in coffee melanoidins. To investigate this hypothesis, a mixture of 5-O-caffeoylquinic acid (5-CQA), the most abundant chlorogenic acid in green coffee beans, and (α1 â 5)-l-arabinotriose, structurally related to arabinogalactan side chains, was submitted to dry thermal treatments. The compounds formed during thermal processing were identified by electrospray ionization mass spectrometry (ESI-MS) and characterized by tandem MS (ESI-MSn). Compounds composed by one or two CQAs covalently linked with pentose (Pent) residues (1-12) were identified, along with compounds bearing a sugar moiety but composed exclusively by the quinic or caffeic acid moiety of CQAs. The presence of isomers was demonstrated by liquid chromatography online coupled to ESI-MS and ESI-MSn. Pent1-2CQA were identified in coffee samples. These results give evidence for a diversity of chlorogenic acid-arabinose hybrids formed during roasting, opening new perspectives for their identification in melanoidin structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 185, 15 October 2015, Pages 135-144
Journal: Food Chemistry - Volume 185, 15 October 2015, Pages 135-144
نویسندگان
Ana S.P. Moreira, Manuel A. Coimbra, Fernando M. Nunes, Cláudia P. Passos, Sónia A.O. Santos, Armando J.D. Silvestre, André M.N. Silva, Maria Rangel, M. Rosário M. Domingues,