Pereira Luciane Dias, Barbosa João Marcos Gonçalves, Ribeiro da Silva Antonio Jorge, Ferri Pedro Henrique, Santos Suzana Costa
Instituto de Química, Universidade Federal de Goiás , 74690-900, Goiânia, Goiás Brazil.
Núcleo de Pesquisas de Produtos Naturais, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro , 21941-590, Rio de Janeiro, Rio de Janeiro, Brazil.
J Agric Food Chem. 2017 Feb 15;65(6):1209-1219. doi: 10.1021/acs.jafc.6b02929. Epub 2017 Feb 7.
A new ellagitannin named cauliflorin (1), seven known hydrolyzable tannins (2-8), and six known phenolics (9-14) were isolated from jabuticaba. Compounds 2-8 had not been previously isolated from M. cauliflora fruits. The jabuticaba fruit was analyzed at four developmental stages for ellagitannins 1, 3, 7, and 8, phenolic acids 11 and 12, anthocyanins, organic acids, and sugars via HPLC-UV-DAD and NMRq. The content of ellagitannins and organic acids declined during fruit development, whereas at full ripeness sugar and anthocyanin levels underwent a sharp increase and were mainly constituted by fructose and cyanidin-3-O-glucose, respectively. Ellagitannins' profile varied considerably among fruit tissues, with pedunculagin (3), castalagin (7), and vescalagin (8) mostly concentrated in jabuticaba seeds, whereas cauliflorin (1) and anthocyanins accumulated in the peels. Changes in jabuticaba's phenolic compound contents were mostly influenced by fruit part (peel, pulp, and seed) rather than by degree of ripeness.
从嘉宝果中分离出一种名为嘉宝果素（1）的新鞣花单宁、七种已知的可水解单宁（2 - 8）和六种已知的酚类化合物（9 - 14）。化合物2 - 8此前未从多花嘉宝果的果实中分离得到。通过高效液相色谱 - 紫外 - 二极管阵列检测法（HPLC - UV - DAD）和核磁共振定量法（NMRq），对嘉宝果在四个发育阶段的鞣花单宁1、3、7和8、酚酸11和12、花青素、有机酸及糖类进行了分析。在果实发育过程中，鞣花单宁和有机酸的含量下降，而在完全成熟时，糖和花青素含量急剧增加，且分别主要由果糖和矢车菊素 - 3 - O - 葡萄糖构成。鞣花单宁在果实不同组织中的分布差异很大，pedunculagin（3）、castalagin（7）和vescalagin（8）大多集中在嘉宝果种子中，而嘉宝果素（1）和花青素则积累在果皮中。嘉宝果酚类化合物含量的变化主要受果实部位（果皮、果肉和种子）影响，而非成熟度。
