Molinu Maria Giovanna, Sulas Leonardo, Campesi Giuseppe, Re Giovanni Antonio, Sanna Federico, Piluzza Giovanna
National Research Council, Institute of Sciences of Food Production, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy.
National Research Council, Institute for the Animal Production System in Mediterranean Environment, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy.
Plants (Basel). 2023 Jan 16;12(2):417. doi: 10.3390/plants12020417.
Mediterranean pasture and forage legumes are important components of sustainable production systems. Subterranean clover and sulla represent key species having proven high agronomic value and traits for production and multiple services. Our research investigated the potential of the abovementioned species as a source of phenolic compounds and antioxidants for contributing to support their full exploitation in the fodder, animal welfare, and nutraceutical sectors. Antioxidant capacity, as well as the content of total phenolic compounds and individual phenolic compounds, was determined in subterranean clover and sulla shoots at the vegetative, flower bud, flowering, and seed ripening phenological stages. The antioxidant capacity and the phenolic content were affected significantly by harvest time. In subterranean clover, 10 individual phenolic compounds were detected, and isoflavones were the most abundant (3.19-18.27 mg·g DM). Eleven phenolic compounds were identified in sulla shoots, and chlorogenic acid (0.76-3.43 mg·g DM) and diosmin (3.64-4.94 mg·g DM) were the most represented compounds at the vegetative and flower bud stage. On the basis of our findings, a complementary utilization of both legume species is suggested; this might ensure the exploitation of all phenolic compounds in view of the potential benefits for animal production and health.
地中海牧场和饲用豆科植物是可持续生产系统的重要组成部分。地下三叶草和 sulla 是关键物种，已证明具有很高的农艺价值以及生产和多种服务特性。我们的研究调查了上述物种作为酚类化合物和抗氧化剂来源的潜力，以促进其在饲料、动物福利和营养保健品领域的充分利用。测定了地下三叶草和 sulla 在营养期、花芽期、花期和种子成熟期的抗氧化能力以及总酚化合物和单个酚类化合物的含量。收获时间对抗氧化能力和酚类含量有显著影响。在地下三叶草中，检测到 10 种单个酚类化合物，异黄酮含量最高（3.19 - 18.27 mg·g DM）。在 sulla 嫩枝中鉴定出 11 种酚类化合物，在营养期和花芽期，绿原酸（0.76 - 3.43 mg·g DM）和地奥司明（3.64 - 4.94 mg·g DM）是含量最高的化合物。根据我们的研究结果，建议对这两种豆科植物进行互补利用；鉴于对动物生产和健康的潜在益处，这可能确保所有酚类化合物都得到利用。
