Instituto de Biotecnología (IBT), Universidad Nacional Agraria La Molina - UNALM, Av. La Molina s/n, Lima, Peru.
Food Chem. 2012 Dec 1;135(3):1592-9. doi: 10.1016/j.foodchem.2012.05.088. Epub 2012 May 30.
Thirty-five different yacon (Smallanthus sonchifolius Poepp. & Endl) accessions were evaluated as potential alternative sources of fructooligosaccharides (FOS) and phenolic type natural antioxidants. FOS, total phenolics (TPC) and antioxidant capacity (AC) contents in the ranges of 6.4-65g/100g of dry mater (DM), 7.9-30.8mg chlorogenic acid (CAE)/g of DM and 23-136μmol trolox equivalente (TE)/g DM were found. Accession AJC 5189 sparked attention for its high FOS content while DPA 07011 for its high TPC and AC. In addition, the prebiotic effect of yacon FOS was tested in vivo with a guinea pig model. A diet rich in yacon FOS promoted the growth of bifidobacteria and lactobacilli, resulting in high levels of short chain fatty acids (SCFAs) in the cecal material and enhancement of cell density and crypt formation in caecum tissue, being indicative of colon health benefits. This study allowed identification of yacon cultivars rich in FOS, AC and/or FOS and AC for nutraceutical applications.
35 个不同的雪莲果（Smallanthus sonchifolius Poepp. & Endl）品种被评估为潜在的低聚果糖（FOS）和酚类天然抗氧化剂的替代来源。在干物质（DM）的 6.4-65g/100g 范围内发现了 FOS、总酚（TPC）和抗氧化能力（AC）含量，在 DM 中 7.9-30.8mg 绿原酸（CAE）和 23-136μmol 生育酚当量（TE）/g DM。AJC 5189 品种因其高 FOS 含量而引人注目，而 DPA 07011 品种因其高 TPC 和 AC 含量而引人注目。此外，还在豚鼠模型中测试了雪莲果 FOS 的益生元作用。富含雪莲果 FOS 的饮食促进了双歧杆菌和乳酸菌的生长，导致盲肠物质中短链脂肪酸（SCFA）水平升高，并增强了盲肠组织中细胞密度和隐窝形成，表明对结肠健康有益。这项研究确定了富含 FOS、AC 和/或 FOS 和 AC 的雪莲果品种，可用于营养保健品应用。
