Physicochemical, morphological and functional characteristics of starch isolated from Quercus ilex and Quercus coccifera

IF 0.7 4区农林科学 Q3 AGRONOMY

Emirates Journal of Food and Agriculture Pub Date : 2023-12-12 DOI:10.9755/ejfa.2023.3185

Rabeb Lassoued, M. Abderrabba, J. Mejri, Wafa Najar Benahmed, Aymen Benhmed, Mounir Ferhi

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引用次数: 0

Abstract

The present research work examined and compared the morphological, physicochemical and functional characteristics extracted from two oak varietiesgrowing inTunisia. Among the findings, it was observed that Quercus ilex's starch granules had the the hightest value of lipid and phosphor content. When observed under scanning electron microscopy, both Quercus ilex and Quercus coccifera starch granules exhibited various shapes such as ovoid, spherical, elliptical and irregular, with diameters ranging from 4 to 25 µm. As for the X-ray diffraction patterns, acorn starch from both varieties displayed an A-type pattern. Comparing the properties, Quercus coccifera acorn starch exhibited higher values for the light transmittance values, the solubility, the swelling power and the gelatinization temperatures than Quercus ilex acorn starch. However, the transition enthalpy of Quercus coccifera acorn starch was the lowest among the studied parameters. These results indicate that these properties are significantly (p<0.05) different depending on the oak variety. Thus, the starches of Quercus ilex and Quercus coccifera could play different roles in various industrial applications. Keywords: acorn, functional properties starch,Quercus,physicochemical properties

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从栎树和柞树中分离出的淀粉的物理化学、形态和功能特征

本研究工作考察并比较了从生长在突尼斯的两个橡树品种中提取的形态、理化和功能特征。研究结果表明，槲树淀粉颗粒中的脂质和磷含量最高。在扫描电子显微镜下观察，柞树和柞树淀粉颗粒呈现出各种形状，如卵圆形、球形、椭圆形和不规则形，直径在 4 至 25 微米之间。至于 X 射线衍射图样，两个品种的橡子淀粉都显示出 A 型图案。比较两种淀粉的特性，柞树橡子淀粉的透光率、溶解度、膨胀力和糊化温度均高于栎树橡子淀粉。然而，在所研究的参数中，柞树橡子淀粉的转化焓最低。这些结果表明，这些特性因橡树品种的不同而有显著差异（p<0.05）。因此，栎类和柞树的淀粉在各种工业应用中可以发挥不同的作用。关键词：橡子；功能特性淀粉；柞树；理化特性

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来源期刊

Emirates Journal of Food and Agriculture AGRONOMYFOOD SCIENCE & TECHNOLOGY&nb-FOOD SCIENCE & TECHNOLOGY

CiteScore

1.80

自引率

0.00%

发文量

期刊介绍： The "Emirates Journal of Food and Agriculture [EJFA]" is a unique, peer-reviewed Journal of Food and Agriculture publishing basic and applied research articles in the field of agricultural and food sciences by the College of Food and Agriculture, United Arab Emirates University, United Arab Emirates.