Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Lagos, Nigeria.
Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth SY23 3EB, UK.
Food Chem. 2017 May 1;222:35-42. doi: 10.1016/j.foodchem.2016.12.002. Epub 2016 Dec 5.
Oil rich seeds of Allanblackia floribunda, a tree from tropical Africa, have traditionally been used in food preparation. Furthermore, the therapeutic properties of various parts of this tree have long been exploited in traditional medicine. As both food and pharmaceutical industries show growing interest in tropical tree crops, this study aimed to investigate whether A. floribunda seeds could also be used as a source of potentially bioactive compounds. The polyphenol profile revealed six predominant compounds which were identified by HPLC-PDA-ESI/MS as the biflavonoids morelloflavone, Gb-2a and volkensiflavone and their respective glucosides. A range of less abundant flavones, flavonols and flavan-3-ols was also detected. All six major compounds showed antioxidant activity, with the activity of morelloflavone, its glucoside and Gb-2a-glucoside comparable with that of ascorbic acid. The main compounds accounted for approximately 10% of dry weight, making the seeds used for oil production a rich source of biflavonoids as a by-product.
富含油分的 Allanblackia floribunda 树种子，来自热带非洲的一种树木，传统上一直用于食品制备。此外，该树的各个部分的治疗特性在传统医学中早已被利用。由于食品和制药行业对热带树木作物的兴趣日益浓厚，本研究旨在探讨 Allanblackia floribunda 树种子是否也可用作潜在生物活性化合物的来源。多酚谱显示出六种主要化合物，通过 HPLC-PDA-ESI/MS 鉴定为双黄酮 morelloflavone、Gb-2a 和 volkensiflavone 及其各自的糖苷。还检测到一系列含量较少的类黄酮、黄酮醇和黄烷醇。所有六种主要化合物均显示出抗氧化活性，morelloflavone、其糖苷和 Gb-2a-糖苷的活性与抗坏血酸相当。主要化合物约占干重的 10%，因此用于生产油的种子是双黄酮的丰富副产品来源。
