The object of this study is a functional fruit-and-berry paste for health purposes with the selection of components (apples, Ziziphus jujuba, blueberries), which are sources of dietary fiber, vitamin C, low molecular weight polyphenolic compounds and phytosterols, which are used as an immunostimulant to create products with cholesterol-lowering effect. The task to increase the content of these substances is solved by concentrating in a rotary film evaporator (RFE) under mild regime parameters (60 - 65 <^>oC) to a dry matter (DM) content of 30 - 32 % for 45 - 50 s and by the pasteurization of concentrated paste in a scraper heat exchanger (SHE) at a temperature of 95 - 98 <^>oC followed by packing. The effective viscosity (Pa-s) of the mixtures of the original purees (DM 16 - 17 %) and resulting pastes (30 - 32 %) has been determined and its increase was found in the pastes compared to puree, by 1,65 - 1,85 times. The obtained data indicate a strengthening of the structure of the resulting functional paste, which, compared to control, has an effective viscosity of 3,6 times more. A significant advantage has a paste containing 45 % of apple; 35 % of Ziziphus jujuba; 20 % of blueberries. It is characterized by an enhanced content of dietary fiber, by 3,8 times; vitamin C, by 2,25 times; low-molecular polyphenolic compounds and tannins, phytosterols. Therefore, it can be used as an immunostimulant to manufacture products with cholesterol-lowering effect. It was established that in order to effectively conduct the process of concentration in RFE and subsequent pasteurization in SHE, it is rational to grind puree to a particle size within 0,1 - 0,5 mm. The heat transfer coefficient when concentrating samples with a particle size of 0,5 mm has a higher rate, by 6 %, compared to the sample with a particle size of 1,5 mm. The technology could be introduced at the enterprises of the canning and confectionery industries.

 Наукова періодика України 

---

Додаткова інформація про автора(ів) публікації:
(cписок формується автоматично, до списку можуть бути включені персоналії з подібними іменами або однофамільці)

• Яковець Людмила Анатоліївна (біологічні науки)
• Бараболя Ольга Валеріївна (сільськогосподарські науки)
• Лаврук Віталій Валерійович (1974–) (економічні науки)

  Якщо, ви не знайшли інформацію про автора(ів) публікації, маєте бажання виправити або відобразити більш докладну інформацію про науковців України запрошуємо заповнити "Анкету науковця"