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[Grape juice nutritional profile].
N N Ivanova1, L M Khomich1, I B Perova2
1Non-Commercial organization «Russian Union of Juice Producers» (RSPS), Moscow.
Voprosy Pitaniia
|February 15, 2019
Summary
Grape juice offers a rich profile of over 30 nutrients, including essential minerals like potassium and magnesium, and beneficial compounds such as flavonoids and resveratrol. Its unique tartaric acid content and antioxidant properties make it a valuable dietary addition.
Area of Science:
- Food Science
- Nutritional Biochemistry
- Phytochemistry
Background:
- Grape juice is a popular beverage with a complex nutritional composition.
- Understanding its micronutrient and biologically active substance (BAS) profile is crucial for dietary assessment.
Purpose of the Study:
- To comprehensively analyze the nutrient profile of grape juice.
- To identify key minerals, organic acids, flavonoids, and other BAS present in grape juice.
Main Methods:
- Data analysis of reference books.
- Compilation of scientific publications and research results.
- Quantification of over 30 food components and BAS.
Main Results:
- Grape juice contains over 30 nutrients, including tartaric acid (unique to grape juice), L-malic acid, potassium, magnesium, iron, and manganese.
- Significant levels of flavonoids, hydroxycinnamic acids (like caftaric acid), anthocyanins (in red/purple varieties), and resveratrol (a potent antioxidant) were identified.
- A serving provides 6-10% of daily potassium needs and substantial amounts of other minerals and BAS, comparable to fresh grapes.
Conclusions:
- Grape juice is a rich source of essential micronutrients and beneficial BAS, contributing significantly to daily intake.
- The presence of tartaric acid and high antioxidant compounds like resveratrol highlights its unique nutritional value.
- Industrial grape juice nutrient content is comparable to that of fresh grapes, supporting its role in a healthy diet.
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