Organic acid conjugated phenolic compounds of hardy kiwifruit (Actinidia arguta) and their NF-κB inhibitory activity

Publication date: Available online 18 October 2019Source: Food ChemistryAuthor(s): Jong Hoon Ahn, Youngki Park, Yang Hee Jo, Seon Beom Kim, Sang Won Yeon, Jun Gu Kim, Ayman Turk, Jin Yong Song, Youngsoo Kim, Bang Yeon Hwang, Mi Kyeong LeeAbstractNine new compounds, argutinosides A-I (1-9) together with 20 known compounds (10-29), were isolated from the fruits of Actinidia arguta. Using spectral analysis, the structures of the isolated compounds were identified as 10 succinic acid derivatives, 11 quinic acid derivatives, two shikimic acid derivatives and six citric acid derivatives. The NF-κB transcriptional inhibitory activity of the compounds was evaluated using RAW 264.7 macrophages cells induced by lipopolysaccharide. Among four groups of different organic acid derivatives, the quinic acid derivatives inhibited NF-κB transcriptional activity with an IC50 value of 4.0 μM. Fruit is rich in organic acid and secondary metabolites, which differ depending on the type of fruit. Our present study showed the presence of various organic acids conjugates including nine new 2-methylsuccinic acid phenolic conjugates in kiwiberry and compared their biological activities. This will contribute to application of kiwiberry and also the diversity of different fruits.

Source: Food Chemistry - October 19, 2019 Category: Food Science Source Type: research