<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cappai, Maria Grazia</style></author><author><style face="normal" font="default" size="100%">Alesso, Giuseppe Andrea</style></author><author><style face="normal" font="default" size="100%">Nieddu, Giuseppa</style></author><author><style face="normal" font="default" size="100%">Sanna, Marina</style></author><author><style face="normal" font="default" size="100%">Pinna, Walter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Electron microscopy and composition of raw acorn starch in relation to in vivo starch digestibility</style></title><secondary-title><style face="normal" font="default" size="100%">Food &amp; Function</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">amilose</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean basin</style></keyword><keyword><style  face="normal" font="default" size="100%">Oak trees</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2013///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1039/C3FO60075K</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">917 - 922</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The structure and composition of starch play an important role as co-factors affecting raw starch digestibility: such features were investigated in raw acorn starch from the most diffused oak trees in the Mediterranean basin. A total of 620 whole ripe acorns from Holm (Quercus ilex L., n = 198), Downy (Quercus pubescens Willd., n = 207) and Cork (Quercus suber L., n = 215) oaks sampled on the Sardinia Isle (40[degree] 56[prime or minute] 0[prime or minute][prime or minute] N; 9[degree] 4[prime or minute] 0[prime or minute][prime or minute] E; 545 m above the mean sea level) in the same geographical area, were analyzed for their chemical composition. The starch contents ranged between 51.2% and 53.5% of dry matter. The starch granules displayed a spheroid/ovoid and cylindrical shape; on scanning electron microscopic (SEM) analyses, a bimodal distribution of starch granule size was observed both for Holm and Cork oak acorns, whereas the starch granules of Downy oak acorns showed diameters between 10.2 and 13.8 [small mu ]m. The specific amylose to amylopectin ratio of acorn starch was 25.8%, 19.5% and 34.0% in the Holm, Downy and Cork oaks, respectively. The 13C Nuclear Magnetic Resonance (NMR) signal analysis displayed a pivotal spectrum for the identification of the amylose peaks in raw acorn starch, as a basis for the amylose to amylopectin ratio determination.</style></abstract><issue><style face="normal" font="default" size="100%">6</style></issue><notes><style face="normal" font="default" size="100%">Key words added by Adriana SilvaKey words added by Adriana SilvaThe following values have no corresponding Zotero field:&lt;br/&gt;publisher: The Royal Society of Chemistry</style></notes></record></records></xml>