ANALYSIS OF TOTAL FLAVONOIDS PRESENT IN SOME OF THE MOST CONSUMED CONVENTIONAL AND ORGANIC FRUITS AND VEGETABLES IN SOUTHERN BRAZIL
DOI:
https://doi.org/10.12957/demetra.2017.22391Keywords:
Flavonoids. Fruits. Vegetables. Organic Food. Crop Production. Food Handling.Abstract
The flavonoids present in nature are related to a large variety of biological activities, such as anti-inflammatory and antioxidant action, and they have beneficial effects on health. The objective of this study was to analyze and compare the amount of flavonoids presented in the most consumed fruits and vegetables in southern Brazil, according to data of 2008/2009 Household Budget Survey (HBS). Fresh onions, tomatoes, bananas and apples, both from conventional and organic cultivations, were analyzed and submitted to dry heat cooking methods. Total flavonoid content was determined by the spectrophotometric method, using aluminum chloride. The results of the analysis for determination of total flavonoids correspond to the means ± standard deviation of three repetitions. The samples of apples and onions presented higher content of flavonoid. The cooking process affected the extraction of flavonoids in fruit by decreasing their levels, a fact explained by the presence of fibers, while it facilitated flavonoid extraction in the vegetables. Daily recommendation of flavonoids is not defined. However, as nutritionists know how food should be eaten and what their flavonoid levels are, they can prescribe and devise strategies and secure goals of intake, in order to promote the patient’s health and hence also improve their social and economic condition.
DOI: 10.12957/demetra.2017.22391
Downloads
Downloads
Published
How to Cite
Issue
Section
License
STATEMENT OF AUTHORSHIP RESPONSIBILITY
Title of the manuscript:
________________________________________________________
1. Statement of responsability
I certify that I have participated in the work above specified and take public responsibility for its content.
I certify that the manuscript represents an original work and that none of the material in the manuscript has been previously published, is included in another manuscript, or is currently under consideration for publication elsewhere, whether in printed form or in electronic media, except that described in the attachment.
In case of acceptance of this text by Demetra: Alimentação, Nutrição & Saude, I declare to be in accordance with the policy of public access and copyright adopted by Demetra, which provides as follows: (a) the authors retain the copyright and grant to the Journal the right of first publication, the work being simultaneously licensed under the Creative Commons Attribution License, which allows the sharing of the work with acknowledgment of authorship and initial publication in this journal; (b) authors are authorized to enter additional contracts separately for non-exclusive distribution of the version of the work published in this journal (eg, publishing in institutional repository or book chapter), with acknowledgment of authorship and initial publication in this journal; and (c) authors are permitted and encouraged to post and distribute their work online (eg, in institutional repositories or on their personal page) at any point before or during the editorial process, as this may lead to productive changes, as well as increase the impact and citation of the published work.
2. Conflict of Interest Statement
I certify that there is no conflict of interest in connection with the submitted article.
Date, signature and full address of all authors.
