Sarv Viive, Venskutonis Petras Rimantas, Rätsep Reelika, Aluvee Alar, Kazernavičiūtė Rita, Bhat Rajeev
Polli Horticultural Research Centre, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Uus 2, Polli, Mulgi Parish, 69108 Viljandi, Estonia.
ERA Chair for Food (By-) Products Valorisation Technologies (VALORTECH), Estonian University of Life Sciences, Fr. R. Kreutzwaldi 1, 51006 Tartu, Estonia.
Antioxidants (Basel). 2021 Nov 6;10(11):1779. doi: 10.3390/antiox10111779.
This study aimed to identify promising candidates of rowanberry cultivars for a wider cultivation and utilization. Antioxidant properties and phenolic content were evaluated for fruit, juice, and pomace samples of 16 different sweet rowanberry cultivars (cvs) and wild rowanberry ( L.), while the antioxidant potential was assessed using three different methods, based on the capacity to scavenge ABTS and DPPH and measure the oxygen radical absorbance capacity (ORAC). In general, the radical scavenging capacity was higher for hybrid cultivars, e.g., for cvs Likernaja, Burka, Granatnaja, and Rubinovaja in all assays. The highest value in the ABTS assay was determined for the fruit sample Likernaja, and in DPPH assay in the pomace sample of cv. Likernaja, at 527.55 and 1068.28 µM TE/g dw, respectively. The highest ORAC value was found in the fruit sample of Burka (456.53 µM TE/g dw). Among the Nevezhino rowans, the highest radical scavenging values of all fractions were determined in cv. Solnechnaja. Regarding the total phenolic content (TPC), higher values were obtained in the whole fruits than in separated fractions, juice, and pomace. The tested hybrids had higher TPC values, either in fruit and pomace or in juice extracts, than those in the other analyzed L. cultivars. While the fruit and juice samples showed higher anthocyanin (ACY) values, the pomace samples had higher hydroxycinnamic acid (HCA) contents on average. The results revealed that the different fractions of selected rowanberry cultivars can be a promising source of antioxidants and polyphenols for further potential applications. It is envisaged that the results of this study will serve in valorizing sweet rowanberry cultivars as value-added functional ingredients for food and non-food applications.
本研究旨在确定有望广泛种植和利用的欧洲花楸品种。对16个不同甜花楸品种和野生花楸（L.）的果实、果汁和果渣样品的抗氧化特性和酚类含量进行了评估，同时基于清除ABTS和DPPH的能力以及测量氧自由基吸收能力（ORAC），采用三种不同方法评估了抗氧化潜力。总体而言，杂交品种的自由基清除能力更高，例如在所有试验中，Likernaja、Burka、Granatnaja和Rubinovaja品种。在ABTS试验中，果实样品Likernaja的清除值最高，在DPPH试验中，Likernaja品种果渣样品的清除值最高，分别为527.55和1068.28 μM TE/g干重。在Burka果实样品中发现最高的ORAC值（456.53 μM TE/g干重）。在涅韦日诺花楸中，所有组分的最高自由基清除值在Solnechnaja品种中测定。关于总酚含量（TPC），整个果实中的值高于分离组分、果汁和果渣中的值。所测试的杂交品种在果实和果渣或果汁提取物中的TPC值高于其他分析的L.品种。虽然果实和果汁样品显示出较高的花青素（ACY）值，但果渣样品平均具有较高的羟基肉桂酸（HCA）含量。结果表明，所选花楸品种的不同组分可能是抗氧化剂和多酚的有前景来源，可用于进一步的潜在应用。预计本研究结果将有助于将甜花楸品种作为食品和非食品应用的增值功能成分进行增值利用。
