Kraujalytė Vilma, Venskutonis Petras Rimantas, Pukalskas Audrius, Česonienė Laima, Daubaras Remigijus
Department of Food Science and Technology, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania.
Department of Food Science and Technology, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania.
Food Chem. 2015 Dec 1;188:583-90. doi: 10.1016/j.foodchem.2015.05.031. Epub 2015 May 8.
Antioxidant properties of juices of newly bred and known blueberry (Vaccinium corymbosum) genotypes and wild bog blueberry (Vaccinium uliginosum) were evaluated by ABTS(+) scavenging capacity (RSC), ferric reducing antioxidant power (FRAP), oxygen radical absorbance capacity (ORAC), total phenolic content (TPC) and total anthocyanin content (TAC) assays. TPC varied in the range of 0.85-2.81 mg gallic acid equiv./mL, RSC, FRAP and ORAC values were 6.38-20.9, 3.07-17.8 and 4.21-45.68 μmol Trolox equiv./g, respectively. New blueberry genotypes and bog blueberry demonstrated stronger antioxidant properties and TAC than other studied genotypes. The content of quinic (203-3614 μg/mL), chlorogenic (20.0-346.8 μg/mL) acids and rutin (0.00-26.88 μg/mL) measured by UPLC/ESI-QTOF-MS varied depending on the genotype. Juices were evaluated by electronic tongue; PCA score plot showed that the method discriminates different genotypes although some juice samples were located very closely and overlapping. Significant differences were observed between L(∗), a(∗), b(∗) colour parameters of some genotypes.
通过ABTS(+)清除能力（RSC）、铁还原抗氧化能力（FRAP）、氧自由基吸收能力（ORAC）、总酚含量（TPC）和总花青素含量（TAC）测定，评估了新培育的和已知的蓝莓（Vaccinium corymbosum）基因型以及野生沼泽蓝莓（Vaccinium uliginosum）果汁的抗氧化特性。TPC的变化范围为0.85 - 2.81毫克没食子酸当量/毫升，RSC、FRAP和ORAC值分别为6.38 - 20.9、3.07 - 17.8和4.21 - 45.68微摩尔Trolox当量/克。新蓝莓基因型和沼泽蓝莓表现出比其他研究基因型更强的抗氧化特性和TAC。通过超高效液相色谱/电喷雾电离-四极杆飞行时间质谱（UPLC/ESI-QTOF-MS）测定的奎尼酸（203 - 3614微克/毫升）、绿原酸（20.0 - 346.8微克/毫升）和芦丁（0.00 - 26.88微克/毫升）的含量因基因型而异。通过电子舌对果汁进行了评估；主成分分析（PCA）得分图表明，尽管一些果汁样品位置非常接近且有重叠，但该方法能够区分不同的基因型。在一些基因型的L(∗)、a(∗)、b(∗)颜色参数之间观察到了显著差异。
