Peach juice-puree nutritional profile

Abstract

Peach fruits (Prunus persica L.) contain a complex of nutritive and biologically active substances. The extraction of juice from peaches is relatively difficult due to the high content of fruit pulp so for the purposes of the juice industry, most peaches are processed in puree which is the basis for the production of peach juice products. Data on the nutrient content in peach juices-purees are few and require clarification and addition as applied to industrial products. The aim of the study was to investigate and update the composition of main nutrients of peach juice-puree. Material and methods. The nutrient composition of peach juice products of industrial production has been studied. Analysis of the results obtained in conjunction with the analysis of the data of reference books and scientific publications regarding peach fruits and juices-purees from them has been performed. Results and discussion. Nutrient profile of peach juice-puree has been established. The nutrient profile shows the content of more than 30 nutritive and biologically active substances. The prevailing saccharide in peach juice-puree is sucrose; glucose and fructose are present in lower concentrations. In addition to sugars, peach juice-puree contains sorbitol - about 0.4 g per 100 g. The total acidity of peach juice-puree is low, in 100 g there is an average of 0.5 g of organic acids, most of which are L-malic and citric acids. Regarding the polyphenols of peach juice-puree, the most significant are hydroxycinnamic acids, mostly chlorogenic, at the concentration of about 10 mg/100 g. The main type of peach juice products on the market are peach nectars containing 40-50% of juicepuree. Peach nectar is rich in vitamin E - more than 20% of the daily requirement per serving, dietary fiber (15% of the daily requirement for pectins and 5% of total dietary fibers), and the content of hydroxycinnamic acids in it fully satisfies or exceeds the adequate daily intake. A serving of peach nectar also contains on average 7% of daily requirement for β-carotene, 8% in copper, 6% in potassium. Conclusion. The most significant micronutrient and minor biologically active substances for peach juice products are dietary fibers, hydroxycinnamic (chlorogenic) acids, β-carotene, vitamin E, and potassium and copper.