Globe artichoke leaves and floral stems as a source of bioactive compounds

作者：Pandino Gaetano; Lombardo Sara; Mauromicale Giovanni^*

来源：Industrial Crops and Products, 2013, 44: 44-49.

DOI：10.1016/j.indcrop.2012.10.022

• Cynara cardunculus var. scolymus
• Clonal selection
• Landrace
• Agricultural wastes
• Caffeoylquinic acids
• Flavones

A growing market interest in natural food ingredients and pharmaceuticals has prompted attempts to exploit bioactive compounds, such as antioxidants, present in crop residues. Here, we have characterized the qualitative and quantitative polyphenol profile of globe artichoke waste material (leaves, floral stem), concentrating on clonal materials derived from two Sicilian landrace varieties. A high content of flavones was present in the leaf, and floral stem proved rich in caffeoylquinic acid. Two of the clones (one derived from each of the two landraces) accumulated substantial quantities of caffeoylquinic acids in their stem (respectively 12,659 and 11,835 mg per kg dry matter), and one of them 2978 mg flavones per kg dry matter. A further clone produced as much as 7044 mg flavones per kg dry matter. The predominant caffeoylquinic acids were 5-O-caffeoylquinic and 1,5-O-dicaffecylquinic in both the leaf and the floral stem, and the predominant luteolins were luteolin-7-O-rutinoside and luteolin-7-O-glucoside. The mean production of polyphenol of the set of 11 clones was 5740 mg per kg dry matter, compared to only 5011 mg in the landrace varieties themselves.

• 出版日期2013-1