Abstract
Jujube consists of Vitamin C, Riboflavin and Thiamin. Vitamin and minerals of fruit are good for heart and improve metabolism. This study evaluates the effects of jujube extract on physicochemical properties and anti-oxidant activity of pomegranate juice. Pomegranate juice was treated with jujube extract (water, alcohol, and water-alcohol) at five concentration levels (5, 10, 15, 20, 25%). Color, total acidity, pH, total solid, activity and anti-oxidant capacity, ash, density, formalin value, tannin and sugar content of treatments were evaluated. The results showed that by increase of concentration of jujube extract, pH was increased and acidity was reduced. By increase of water extract concentration in formulation, anti-oxidant capacity was increased significantly (P<0.05). The highest and lowest anti-oxidant capacity was dedicated to the samples with 25% water extract and 25% alcohol extract.
Highlights
In recent years, the consumers, researchers and food industry have chosen healthy food production and the role of diet has received much attention to avoid most diseases [11]
Jujube extract was randomly provided from Tajrish market in Tehran (Iran) and pomegranate concentrate was purchased from Noshin Company in Mazandaran. 5 gram Jujube powder was added to 95 ml distilled water, 95 ml ethanol solvent or 95 ml mixture of water and ethanol solvents, respectively to prepare water, ethanol or waterethanol extract of Jujube
The highest amount of reducing sugar was achieved in samples with water Jujube extract and the lowest was dedicated to the samples with alcohol extract of Jujube
Summary
The consumers, researchers and food industry have chosen healthy food production and the role of diet has received much attention to avoid most diseases [11]. The edible parts of pomegranate are used freshly or are applied to prepare fresh fruit juice, beverages, jelly, jam and paste and for flavouring and colouring the beverage products [4,6]. It is used widely in health, therapy formula and food spice. The increase of attention to pomegranate as pharmacological and nutritional product with its multi-functional capacity has some great advantages. This fruit is effective on mitigating disease risk [5, 8]. There are many biochemical compounds in the pomegranate juice [7]
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