Neutral lipids in non-starch lipid and starch lipid extracts from Portuguese sourdough bread

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Rocha, JM (Author) Other; Kalo, PJ (Author) Other; F. Xavier Malcata (Author) Other

Journal

Title: European Journal of Lipid Science and Technology

Vol. 112

Pages: 1138-1149

ISSN: 1438-7697

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 5 Citations

Other information

Authenticus ID: P-003-2B0

DOI: 10.1002/ejlt.201000101

Abstract (EN): This research effort was aimed at assessing the changes in extractable neutral lipids (NL) throughout the baking process of Broa, a Portuguese traditional sourdough bread. NL were accordingly isolated, purified and quantitated - starting from non-starch lipid (NSL) and starch lipid (SL) extracts of maize and rye flours, as well as fermented dough and bread. NSL accounted for the major fraction of extracted lipids; furthermore, the NSL/SL ratio evolved throughout processing in agreement with the phenomena prevailing during dough preparation, fermentation, and baking. An analytical method based on resolution by normal-phase HPLC coupled with detection by evaporative light scattering was accordingly developed for quantitation of the aforementioned NL classes. Distinct NL classes correlated well with the stage of bread making. The main NL in NSL were triacylglycerols (ca. 75% of the total), but relatively high concentrations of sterol esters and diacylglycerols were also found. Conversely, free fatty acids were the dominant component of SL, whereas monoacylglycerols and free sterols were comparable to those in NSL.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12