Jorjong Sujitar, Butkhup Luchai, Samappito Supachai
Department of Biotechnology, Faculty of Technology, Mahasarakham University, Mahasarakham 44000, Thailand.
Department of Biotechnology, Faculty of Technology, Mahasarakham University, Mahasarakham 44000, Thailand.
Food Chem. 2015 Aug 15;181:248-55. doi: 10.1016/j.foodchem.2015.02.093. Epub 2015 Feb 25.
Phenolic compounds extracted from fourteen Mao-Luang (Antidesma bunius) cultivars grown in Northeastern Thailand were quantified using HPLC analysis and the antioxidant capacity of the extracts was determined by ABTS(+), DPPH radical, and FRAP assays. This study showed that there were differences (p<0.05) in phenolic compounds and antioxidant activities among Mao-Luang cultivars. Gallic acid, (-)-epicatechin, (+)-catechin, and cyanidin-3-O-glucoside were the major polyphenolic components in all Mao-Luang cultivars. The highest contents were found in 'Kumlai' with values of 281.30, 949.73, 127.60 and 54.67 mg/100g DW, respectively. 'Kumlai' also exhibited the highest antioxidant activity with the values of 103.04 mmol VCEAC/gDW (DPPH assay), 35.35 mmol Fe(II)/gDW (FRAP assay), and 46.37 mmol TE/gDW (ABTS(+) assay). Correlation analyses revealed that gallic acid, ferulic acid and some anthocyanins, mainly cyanidin-3-O-glucoside, were responsible for the antioxidant capacity of Mao-Luang fruits.
采用高效液相色谱分析法对从泰国东北部种植的14个毛榄仁（Antidesma bunius）品种中提取的酚类化合物进行定量，并通过ABTS(+)、DPPH自由基和FRAP分析测定提取物的抗氧化能力。本研究表明，毛榄仁品种间酚类化合物和抗氧化活性存在差异（p<0.05）。没食子酸、(-)-表儿茶素、(+)-儿茶素和矢车菊素-3-O-葡萄糖苷是所有毛榄仁品种中的主要多酚成分。在“Kumlai”中含量最高，分别为281.30、949.73、127.60和54.67 mg/100g干重。“Kumlai”还表现出最高的抗氧化活性，DPPH分析值为103.04 mmol VCEAC/gDW，FRAP分析值为35.35 mmol Fe(II)/gDW，ABTS(+)分析值为46.37 mmol TE/gDW。相关性分析表明，没食子酸、阿魏酸和一些花青素，主要是矢车菊素-3-O-葡萄糖苷，是毛榄仁果实抗氧化能力的原因。
