ABSTRACT

Oat predominately cultivated as forage crop and is not explored for its value-added bioactive moieties. This study was aimed to characterize five selected oat (Avena sativa L.) cultivars with respect to organic sugars, antioxidant activities, pesticide residues, mycotoxin and phenolic acids as measured HPLC. Five indigenous oat cultivars (Avon, PD2LV65, S2000, SGD2011, SGD81) were profiled for seven phenolic acids (gallic acid, vanillic acid, caffeic acid, syringic acid, p-coumaric acid, chlorogenic acid and ferulic acid). Highest concentrations of vanillic acid, gallic acid, caffeic acid, syringic acid, ferulic acid, p-coumaric acid and chlorogenic acid were detected in the SGD2011, SGD81, S2000, SGD2011, S2000, SGD2011 and PD2LV65 respectively. TPC in case of all oat cultivars ranged 50.88–101.56 mg/100 g. Among all oat cultivars, SGD-81 exhibited the highest DPPH activity, TPC, TFC and TFoC contents whereas, SGD-2011 showed the highest total anthocyanin content followed by AVON. S2000 showed the highest concentration of mycotoxin M1 (18.51 ppm), while lowest M1 content (10.51 ppm) were exhibited by SGD-81. Abamectin and permethrin pesticide residues were undetected in oat cultivars whereas, Dieldrin was only detected in SGD-81 and chloropyrifos was not detected in S2000 and SGD-81. Mandipropamid, parathion methyl, chlorthalonil, indoxacarb and lufernon were detected in the highest concentrations in SGD2011 and S2000 oat cultivars. Moreover, fructose, glucose and sucrose were found in highest amounts in S2000, PD2LV65 and SGD2011, respectively. Conclusively, it was evident from the results that SGD-81, SGD2011 and SG2000 could be utilized as source of important and promising phytochemicals of nutraceutical significance. Moreover, significant potential of these oat cultivars can be harnessed owing to value addition and exploitation in formulations of functional food ingredients and foodstuffs.

摘要

燕麦主要作为饲料作物种植，并未对其增值生物活性部分进行探索。本研究旨在表征五个选定的燕麦 ( Avena sativa L.) 栽培品种的有机糖、抗氧化活性、农药残留、真菌毒素和酚酸，如 HPLC 测量。对五个本土燕麦品种（雅芳、PD2LV65、S2000、SGD2011、SGD81）的七种酚酸（没食子酸、香草酸、咖啡酸、丁香酸、对香豆酸、绿原酸和阿魏酸）进行了分析。最高浓度的香草酸、没食子酸、咖啡酸、丁香酸、阿魏酸、p-香豆酸和绿原酸分别在 SGD2011、SGD81、S2000、SGD2011、S2000、SGD2011 和 PD2LV65 中检测到。所有燕麦品种的 TPC 范围为 50.88–101.56 mg/100 g。在所有燕麦品种中，SGD-81 的 DPPH 活性、TPC、TFC 和 TFoC 含量最高，而 SGD-2011 的总花青素含量最高，其次是雅芳。S2000 的霉菌毒素 M1 浓度最高（18.51 ppm），而 SGD-81 的 M1 含量最低（10.51 ppm）。燕麦品种中未检测到阿维菌素和氯菊酯农药残留，而仅在 SGD-81 中检测到狄氏剂，在 S2000 和 SGD-81 中未检测到毒死蜱。在 SGD2011 和 S2000 燕麦品种中检测到最高浓度的 Mandipropamid、甲基对硫磷、百菌清、茚虫威和 lufernon。此外，果糖、葡萄糖和蔗糖分别在 S2000、PD2LV65 和 SGD2011 中含量最高。总之，结果表明 SGD-81、SGD2011 和 SG2000 可用作具有营养意义的重要且有前景的植物化学物质的来源。此外，由于在功能性食品成分和食品配方中的增值和开发，可以利用这些燕麦品种的巨大潜力。