Food Science & Biotechnology Program, Department of Human Ecology, College Agriculture, Science and Technology, Delaware State University, 1200 N DuPont Highway, Dover, DE 19901, United States.
School of Environmental and Life Sciences, College of Engineering, Science and Environment, The University of Newcastle (UON), Brush Road, Ourimbah, NSW 2258, Australia.
Food Chem. 2022 Oct 1;390:133168. doi: 10.1016/j.foodchem.2022.133168. Epub 2022 May 7.
The processing and consumption of mango (Mangifera indica) generate a sizeable amount of kernel waste with enormous and largely unexplored potential, while by-products from njangsa (Ricinodendron heudelotii) seed and bush mango (Irvingia gabonensis) kernel oil extraction are often discarded. This study aims to repurpose these kernels and seed wastes into added/high-value products and evaluate the ethanolic and methanolic extracts of their pressed marcs for polyphenolic content and potential antioxidant activity. The total phenolic content (TPC) and total flavonoid content (TFC) in the marc extracts ranged between 47.87 and 376.0 mg GAE/g and 4.85 and 13.70 mg Rutin/g, respectively. Both mango kernel marc extracts showed higher potent reducing power, ABTṠ radical and DPPḢ radical scavenging activities with half effective concentration (EC) values (0.20-0.22 mg/mL) comparable to the reference compound; ascorbic acid (0.20 mg/mL). The TPC and TFC of the marc extracts generally strongly correlated with antioxidant activity. Relatively higher contents of xanthophyll and β-carotene were detected in bush mango kernel methanolic extract than in the other extracts. Extraction solvent affected the composition and content of bioactives in pressed marcs of njangsa seed and mango kernel.
芒果（Mangifera indica）的加工和消费会产生大量的果核废料，这些废料具有巨大的、尚未得到充分开发的潜力，而 njangsa（Ricinodendron heudelotii）种子和 bush mango（Irvingia gabonensis）核仁油提取的副产物通常被丢弃。本研究旨在将这些核仁和种子废料重新利用为附加值高的产品，并评估其压榨果渣的醇提物和水提物的多酚含量和潜在抗氧化活性。果渣提取物中的总酚含量（TPC）和总黄酮含量（TFC）分别在 47.87 至 376.0 mg GAE/g 和 4.85 至 13.70 mg 芦丁/g 之间。两种芒果核仁果渣提取物均表现出较高的还原能力、ABTS 自由基和 DPPH 自由基清除活性，半数有效浓度（EC）值（0.20-0.22 mg/mL）与对照化合物抗坏血酸（0.20 mg/mL）相当。果渣提取物的 TPC 和 TFC 与抗氧化活性通常呈强相关性。 bush mango 核仁甲醇提取物中的叶黄素和β-胡萝卜素含量相对较高，高于其他提取物。提取溶剂影响 njangsa 种子和芒果核仁压榨果渣中生物活性物质的组成和含量。
