Background: Red fruits are characterised by a particularly high content of bioactive compounds, e.g. anthocyanins, tannins, pectins, vitamins and minerals. Dietary supply of proper amounts of antioxidants is essential to reduce oxidative stress, and thus is an important element in the prevention of lifestyle diseases.
Objective: The aim of the study was to evaluate and compare the content of polyphenols in selected red fruit juices (chokeberry, elderberry, pomegranate, cranberry), as well as to assess the impact of storage time on the content of these compounds in the analysed samples.
Material And Methods: The research material consisted of 17 juices (100%): 3 chokeberry juices, 4 elderberry juices, 5 pomegranate juices and 5 cranberry juices, which differed in terms of the manufacturer, type, price range, country of origin and production method. The total polyphenol content was measured by spectrophotometry using the Folin�Ciocalteu reagent. The procedure was based on a modified method described by Waterhouse. Active acidity (pH) was measured with the potentiometric method using a pH-meter and the sucrose content was measured using a refractometer.
Results: The highest mean content of polyphenolic compounds was found in chokeberry and elderberry juices. Juice storage time did not reduce the mean content of polyphenolic compounds. The highest sucrose content was found in chokeberry juices and the lowest in cranberry juice.
Conclusions: Chokeberry and elderberry juices had the highest content of polyphenols among the tested products. Juices stored after opening in accordance with the manufacturer's instructions (at 4°C) do not lose their nutritional properties.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.32394/rpzh.2024.0298 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Antibacterial efficacy of berry juices against Bacillus cereus relative to their phytochemical composition and antioxidant properties.
Sci Rep
November 2024
Institute of Food Technology and Analysis, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 2/22 Bohdana Stefanowskiego, 90-537, Lodz, Poland.
Article Synopsis
- The research focuses on using natural preservatives from berry juices to keep minimally processed foods safe and stable.
- The study tested juices from four berry species against the food pathogen Bacillus cereus, finding that chokeberry had the strongest antibacterial effect, while elderberry showed no inhibition.
- It suggests that the juice's effectiveness is linked to its antioxidant properties rather than just acidity or anthocyanin levels, enhancing our understanding of using berry extracts as biopreservatives.
Evaluation of phenolic content in selected red fruit juices.
Rocz Panstw Zakl Hig
August 2024
Department of Biostatistics, Faculty of Public Health in Bytom, Medical University of Silesia in Katowice.
Background: Red fruits are characterised by a particularly high content of bioactive compounds, e.g. anthocyanins, tannins, pectins, vitamins and minerals.
View Article and Find Full Text PDFExploring the Potential of L., (Michx.) Elliott, and L. Fruit Polyphenol-Rich Composition and Metformin Synergy in Type 2 Diabetes Management.
J Diabetes Res
June 2024
R&D Department AronPharma Ltd. Trzy Lipy Street 3 80-172, Gdańsk, Poland.
Type 2 diabetes, characterized by insulin resistance and impaired glucose homeostasis, is commonly managed through lifestyle interventions and medications such as metformin. Although metformin is generally well-tolerated, it may cause gastrointestinal adverse effects and, in rare cases, precipitate lactic acidosis, necessitating cautious use in individuals with renal dysfunction. Additionally, concerns regarding its impact on hepatic function have led to its discontinuation in cirrhotic patients.
View Article and Find Full Text PDFDark chocolate: An overview of its biological activity, processing, and fortification approaches.
Curr Res Food Sci
October 2022
Laboratory of Natural Products and Medicinal Chemistry (LNPMC), Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600077, India.
Dark chocolate gets popularity for several decades due to its enormous health benefits. It contains several health-promoting factors (bioactive components - polyphenols, flavonoids, procyanidins, theobromines, etc, and vitamins and minerals) that positively modulate the immune system of human beings. It confers safeguards against cardiovascular diseases, certain types of cancers, and other brain-related disorders like Alzheimer's disease, Parkinson's disease, etc.
View Article and Find Full Text PDFAntioxidative Properties and Acrylamide Content of Functional Wheat-Flour Cookies Enriched with Wild-Grown Fruits.
Molecules
August 2022
Department of Human Nutrition and Dietetics, Faculty of Food Technology, University of Agriculture in Krakow, Al. Mickiewicza 21, 30-149 Krakow, Poland.
This study aimed to evaluate the impact of widely grown fruits (wild roses, elderberries, sea buckthorns, rowans, chokeberries, and hawthorns) as a functional ingredient in wheat-flour cookie formulation on antioxidative properties with a simultaneous reduction of the carcinogen-like compound acrylamide. The organoleptic features of the cookies were assessed by a panel of consumers. The following parameters were measured: chemical composition, total polyphenols, polyphenolic profile, antioxidant activity, and acrylamide content.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!