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      Nutraceutical fruit characterization, nutritional aspects and sensory analysis of dovyalis jams Translated title: Caracterização de um fruto nutracêutico, seu aspecto nutricional e análise sensorial de geleia

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          Abstract

          ABSTRACT: The objective of this study is to evaluate the composition, nutritional aspects and sensory analysis of the dovyalis jam. Dovyalis fruits were harvested from 4-year-old plants in the orchard of the Unioeste Experimental Farm. They were collected in the morning in polyethylene boxes, when they were ripe and with a purple coloration from the epicarp, being immediately transported to the Laboratory to prepare the jams. After fruits arrival, they were selected by size, color and weight and then sanitized in running water and the cups of the fruits were removed. The sensory evaluations of the jam samples were performed in a randomized fashion, with 30 volunteer tasters. The tasters were previously advised to evaluate the acceptance of the jams and their purchase intentions. Fruits in natura and dovyalis jam are sources of vitamin C. Dovyalis fruits can be used in the processing, due to its acidity. The jam prepared with dovyalis fruits without epicarp and endocarp, and less sugar, was more appreciated by the tasters.

          Translated abstract

          RESUMO: Objetivou-se com o presente trabalho avaliar a composição, aspectos nutricionais e análise sensorial da geleia de dovyalis. Frutos de dovyalis foram colhidos de plantas de quatro anos, no pomar da Fazenda Experimental da Unioeste. Estes, foram coletados de manhã, em caixas de polietileno, quando encontravam-se maduros e com coloração arroxeada do epicarpo, sendo imediatamente após, transportados ao laboratório, para o preparo das geleias. Após a chegada dos frutos, estes foram selecionados por tamanho, coloração e peso e, em seguida, higienizados em água corrente e retirados os cálices dos frutos. As avaliações sensoriais das amostras de geleia foram realizadas de forma casualizada, com 30 provadores voluntários. Os provadores foram previamente orientados a avaliarem a aceitação das geleias e suas intenções de compra. Frutos in natura e geleia de dovyalis são fontes de vitamina C. Frutos de dovyalis podem ser usados no processamento, devido sua acidez. A geleia preparada com frutos de dovyalis sem epicarpo e endocarpo, e menor quantidade de açúcar, foi mais apreciada pelos provadores.

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          Sisvar: a computer statistical analysis system

          Sisvar is a statistical analysis system, first released in 1996 although its development began in 1994. The first version was done in the programming language Pascal and compiled with Borland Turbo Pascal 3. Sisvar was developed to achieve some specific goals. The first objective was to obtain software that could be used directly on the statistical experimental course of the Department of Exact Science at the Federal University of Lavras. The second objective was to initiate the development of a genuinely Brazilian free software program that met the demands and peculiarities of research conducted in the country. The third goal was to present statistical analysis software for the Brazilian scientific community that would allow research results to be analyzed efficiently and reliably. All of the initial goals were achieved. Sisvar gained acceptance by the scientific community because it provides reliable, accurate, precise, simple and robust results, and allows users a greater degree of interactivity.
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            Identification of flavonoid and phenolic antioxidants in black currants, blueberries, raspberries, red currants, and cranberries.

            The antioxidant capacity (AOC) of black currant, blueberry, raspberry, red currant, and cranberry extracts was determined using the FRAP assay. In addition, the vitamin C content of the berries was determined and phenolic and polyphenolic compounds in the extracts were analyze by reversed-phase HPLC-PDA-MS(3) and by reversed-phase HPLC-PDA with an online antioxidant detection system. A complex spectrum of anthocyanins was the major contributor to the AOC of black currants and blueberries, whereas the lower AOC of red currants and cranberries was due mainly to a reduced anthocyanin content. Raspberries also had a lower anthocyanin content than black currants and blueberries, but there was only a slight decline in the AOC because of the presence of the ellagitannins sanguin H-6 and lambertianin C, which were responsible for 58% of the HPLC-AOC of the berries. Vitamin C was responsible for 18-23% of the HPLC-AOC of black currants, red currants, and cranberries and for 11% of that of raspberries but did not contribute to the AOC of the blueberry extract that was examined. Seven percent of the HPLC-AOC of the cranberry extract was attributable to procyanidin dimers. However, the contribution of polymeric proanthocyanidins to the AOC of the five berries was not determined as when analyzed by reversed-phase HPLC these high molecular weight flavan-3-ols are either retained by the column or eluted as a broad unresolved band.
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              Bioactive Compounds and Antioxidant Capacity of Small Berries

              The popularity of small berries has rapidly increased in Western countries given their antioxidant, anti-inflammatory, and antimicrobial activities and health-promoting properties. The aim of this study was to compare the fatty acid (FA) profile, phenolic compounds, and antioxidant capacity of extracts of 11 berries cultivated in the North West of Italy. Berry samples were extracted and evaluated for FA profile and total anthocyanin (TAC), total flavonoid contents (TFC), ferric-reducing antioxidant power (FRAP), and for their radical scavenging activities against 2,2′-diphenyl-1-picrylhydrazyl (DPPH•) radical. The main polyphenols of berry extracts were characterized by HPLC-DAD-UV-ESI HRMS in positive ion mode. Results showed that the highest TAC and TFC contents were recorded in black currants, blackberries, and blueberries. Maximum and minimum DPPH• radical scavenging activities, Trolox Equivalent Antioxidant Capacity, and FRAP measurements confirmed the same trend recorded for TAC and TFC values. HPLC-HRMS analyses highlight how blueberries and blackberries have the highest concentration in polyphenols. Palmitic, stearic, oleic, linoleic, α-linolenic, and γ-linolenic acids significantly differ between berries, with oleic and α-linolenic acid representing the most abundant FAs in raspberries. Among the berries investigated, results of phytochemical characterization suggest choosing black currants and blueberries as an excellent source of natural antioxidants for food and health purposes.
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                Author and article information

                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria, RS, Brazil )
                0103-8478
                1678-4596
                2021
                : 51
                : 1
                : e20200310
                Affiliations
                [1] Marechal Cândido Rondon Paraná orgnameUniversidade Estadual do Oeste do Paraná orgdiv1Centro de Ciências Agrárias (CCA) Brazil
                Article
                S0103-84782021000100751 S0103-8478(21)05100100751
                10.1590/0103-8478cr20200310
                ea672359-6fef-45dd-b852-3f583a521375

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 06 April 2020
                : 31 July 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 36, Pages: 0
                Product

                SciELO Brazil

                Categories
                Food Technology

                Dovyalis hebecarpa,qualidade nutricional,pequenos frutos,processing,processamento,nutritional quality,small fruits

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