Malisch Carsten S, Lüscher Andreas, Baert Nicolas, Engström Marica T, Studer Bruno, Fryganas Christos, Suter Daniel, Mueller-Harvey Irene, Salminen Juha-Pekka
Forage Production and Grassland Systems, Institute for Sustainability Sciences ISS, Agroscope, Reckenholzstrasse 191, CH-8046 Zurich, Switzerland.
Forage Crop Genetics, Institute of Agricultural Sciences, ETH Zurich , CH-8092 Zurich, Switzerland.
J Agric Food Chem. 2015 Dec 2;63(47):10234-42. doi: 10.1021/acs.jafc.5b04946. Epub 2015 Nov 20.
Proanthocyanidins (PAs) in sainfoin (Onobrychis viciifolia Scop.) are of interest to ameliorate the sustainability of livestock production. However, sainfoin forage yield and PA concentrations, as well as their composition, require optimization. Individual plants of 27 sainfoin accessions from four continents were analyzed with LC-ESI-QqQ-MS/MS for PA concentrations and simple phenolic compounds. Large variability existed in PA concentrations (23.0-47.5 mg g(-1) leaf dry matter (DM)), share of prodelphinidins (79-96%), and mean degree of polymerization (11-14) among, but also within, accessions. PAs were mainly located in leaves (26.8 mg g(-1) DM), whereas stems had less PAs (7.8 mg g(-1) DM). Overall, high-yielding plants had lower PA leaf concentrations (R(2) = 0.16, P < 0.001) and fewer leaves (R(2) = 0.66, P < 0.001). However, the results show that these two trade-offs between yield and bioactive PAs can be overcome.
红豆草（Onobrychis viciifolia Scop.）中的原花青素（PAs）对于改善畜牧生产的可持续性具有重要意义。然而，红豆草的牧草产量、PA浓度及其组成都需要优化。利用液相色谱-电喷雾串联四极杆质谱（LC-ESI-QqQ-MS/MS）对来自四大洲的27份红豆草种质的单株进行了PA浓度和简单酚类化合物分析。不同种质间以及同一种质内的PA浓度（23.0-47.5毫克/克叶干物质（DM））、原飞燕草素比例（79-96%）和平均聚合度（11-14）均存在很大差异。PA主要存在于叶片中（26.8毫克/克DM），而茎中的PA含量较少（7.8毫克/克DM）。总体而言，高产植株的叶片PA浓度较低（R² = 0.16，P < 0.001）且叶片数量较少（R² = 0.66，P < 0.001）。然而，结果表明，产量和生物活性PA之间的这两种权衡是可以克服的。
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