Multari Salvatore, Pihlava Juha-Matti, Ollennu-Chuasam Priscilla, Hietaniemi Veli, Yang Baoru, Suomela Jukka-Pekka
Food Chemistry and Food Development, Department of Biochemistry , University of Turku , Vatselankatu 2 , FI-20014 Turku , Finland.
Natural Resources Institute Finland (Luke), FI-31600 Jokioinen , Finland.
J Agric Food Chem. 2018 Mar 21;66(11):2900-2908. doi: 10.1021/acs.jafc.7b05726. Epub 2018 Mar 12.
Finland is the second largest oat producer in Europe. Despite the existing knowledge of phenolics in oat, there is little information on the phenolic composition of oats from Finland. The aim of the study was to investigate the concentrations of free and bound phenolic acids, as well as avenanthramides in eight Finnish cultivars of husked oat ( Avena sativa L.). Seven phenolic acids and one phenolic aldehyde were identified, including, in decreasing order of abundance: p-coumaric, ferulic, cinnamic, syringic, vanillic, 2,4-dihydroxybenzoic, and o-coumaric acids and syringaldehyde. Phenolic acids were mostly found as bound compounds. Significant varietal differences ( p < 0.05) were observed in the cumulative content of phenolic acids, with the lowest level found in cv. 'Viviana' (1202 ± 52.9 mg kg) and the highest in cv. 'Akseli' (1687 ± 80.2 mg kg). Avenanthramides (AVNs) 2a, 2p, and 2f were the most abundant. Total AVNs levels ranged from 26.7 ± 1.44 to 185 ± 12.5 mg kg in cv. 'Avetron' and 'Viviana', respectively.
芬兰是欧洲第二大燕麦生产国。尽管人们对燕麦中的酚类物质已有一定了解，但关于芬兰燕麦的酚类成分的信息却很少。本研究的目的是调查八个芬兰去壳燕麦（ Avena sativa L.）品种中游离和结合酚酸以及燕麦酰胺的含量。鉴定出了七种酚酸和一种酚醛，按含量从高到低依次为：对香豆酸、阿魏酸、肉桂酸、丁香酸、香草酸、2,4 - 二羟基苯甲酸、邻香豆酸和丁香醛。酚酸大多以结合态存在。酚酸的累积含量存在显著的品种差异（p < 0.05），其中含量最低的是‘Viviana’品种（1202 ± 52.9毫克/千克），最高的是‘Akseli’品种（1687 ± 80.2毫克/千克）。燕麦酰胺（AVNs）2a、2p和2f含量最为丰富。在‘Avetron’和‘Viviana’品种中，燕麦酰胺的总含量分别为26.7 ± 1.44毫克/千克和185 ± 12.5毫克/千克。
