油籽细胞壁酶解后糖和糖醛酸的释放与游离油回收的相关性。

Correlation between the release of sugars and uronic acid and free oil recovery following enzymatic digestion of oil seed cell walls.

机构信息

Laboratoire d'Ingénierie des Biomolécules (LIBio) Nancy-Université, 2 av. de la forêt de Haye, BP 172, F-54505 Vandoeuvre lès Nancy Cedex, France.

出版信息

Bioresour Technol. 2011 Oct;102(20):9599-604. doi: 10.1016/j.biortech.2011.06.097. Epub 2011 Jul 13.

DOI:10.1016/j.biortech.2011.06.097

PMID:21873047

Abstract

Aqueous extraction of sunflower seeds and rapeseeds with mixtures of hydrolytic enzymes were carried out in 2-L reactor and uronic acid and reducing sugar concentrations were measured during digestion. The goal of the study was to determine if a correlation between those concentrations and free oil exists that would allow predicting free oil release from aqueous solution measurements. Similar concentrations of 4.5 and 4.7 g/L of reducing sugars and 43 and 55 g/L of uronic acid were found for sunflower and rapeseeds, respectively. The corresponding yields of free oil from the two seeds were 83% and 16% of total oil, and this difference was due to the formation of an emulsion in the rapeseed dispersion. Therefore, measurement of reducing sugars or uronic acid concentrations are not sufficient to predict a release of free oil from all oil seeds.

摘要

在 2-L 反应器中进行了葵花籽和油菜籽的水提取实验，使用的是水解酶混合物，并在消化过程中测量了糖醛酸和还原糖的浓度。该研究的目的是确定这些浓度与游离油之间是否存在相关性，从而可以根据水溶液测量结果预测游离油的释放。葵花籽和油菜籽的还原糖浓度分别为 4.5 和 4.7 g/L，糖醛酸浓度分别为 43 和 55 g/L。这两种种子的游离油得率分别为总油的 83%和 16%，这种差异是由于油菜籽分散体中形成了乳状液。因此，测量还原糖或糖醛酸浓度不足以预测所有油籽中游离油的释放。