Foods, phenolic acids distribution

The cited observations suggest that it is possible to identify potato cultivars with low or high phenolic acid content for human use and to select processing conditions that minimize losses of phenolic compounds. In summary, the methods we developed and used to determine the content and distribution of phenolic compounds in potato plant flowers, leaves, and tubers, in the peel and flesh parts of potato tubers, and in freeze-dried and processed commercial potatoes merit application in numerous studies designed to assess the role of potato phenolic compounds in host-plant resistance, plant breeding, plant molecular biology, food chemistry, nutrition, and medicine. The described wide distribution of phenolic compounds in different commercial... 

Peleg, FI. Naim, M. Rouseff, R.L. Zehavi, U. 1991. Distribution of bound and free phenolic acids in oranges (Citrus sinensis) and grapefruits (Citrusparadise). J. Sci. Food Agric. 57 417 26. 

Zhou, Z., Robards, K., HelliweU, S., and Blanchard, C., The distribution of phenolic acids in rice. Food... 

Phenolic compounds constitute a very large and complex group of secondary products found in plants. Among these phenolic compounds the phenolic acids are a large family of natural compounds widely distributed in plants, with very important and useful properties both for the producer plants and for the human health. In this review, the nature of the various phenolic acids present in food sources and the influence on... 

Qualitative and quantitative determinations of phenolie acids, especially the combined forms, have been significantly improved during the last two decades, allowing one to draw a general picture of their distribution in fruits and vegetables and flieir importance as food constituents. In the comprehensive reviews on these topics that have already been pubUshed [1-5] most of the oldest references may be found. In the present review, our attention is focused on the presence and content of phenolic acids in fruits (mainly fleshy fruits with then-seeds) and vegetables, and on the main parameters fliat can modify them. 

Del Bano, M.J., Lorente, J., Castillo, J., Benavente-Garcia, O., del Rio, J.A., and Ortuno, A. 2003. Phenolic diterpenes, flavones, and rosmarinic acid distribution during the development of leaves, flowers, stems, and roots of Rosmarinus officinalis. Antioxidant activity. Journal of Agricultural and Food Chemistry. 2003. 51, 4247-4253. 

Wang, B.-N., Liu, H.F., Zheng, J.B. et al. (2011) Distribution of phenolic acids in different tissues of jujube and their antioxidant activity. J. Agric. Food Chem., 59, 1288-1292. 

Figure 6.5 shows the structures of tra 5-cinnamic acid and four cinnamic acid derivatives (phenolic compounds) reported to be present in potatoes. Because potatoes are one of our major food plants, we validated with the aid of HPLC and LC/MS the content and distribution of antioxidative phenolic compounds in parts of the potato plant, in potato tubers, in the peel and flesh of tubers, in potatoes sold commercially in Korea and the United States, and in home-processed potatoes. The following discussion, based on our own studies, is followed by a brief overview of analytical methods for potato phenolic compounds by other investigators. 

Vanbeneden, N., Gils, R, Delvaux, R, Delvaux, R R. (2008). Formation of 4-vinyl and 4-ethyl derivatives from hydroxycinnamic acids occurrence of volatile phenolic flavour compounds in beer and distribution of padl-activity among brewing yeasts. Food Chemistry, 107, 221-230. http //dx.doi.Org/10.1016/j.foodchem.2007.08.008. 

Kalogeropoulos N, Chiou A, Mylona A, loaimou MS, Andrikopoulos NK (2007) Recovery and distribution of natural antioxidants (a-tocopherol, polyphenols and terpenic acids) after pan-frying of Mediterranean finfish in virgin olive oil. Food Chem 100 509-517 Cacace JE, Mazza G (2003) Mass transfer process during extraction of phenolic compounds from milled berries. J Food Eng 59 379-389... 

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