Physicochemical properties and antioxidant activities of jujubes (Ziziphus jujuba Mill.): effect of blackening process on different cultivars

This study aimed to quantitatively assess the physicochemical properties and antioxidant activities of seven jujube cultivars (NYDZ, MZ, TZ, HZ, HTDZ, GTZ, and JSXZ) before and after the blackening process and to select the most suitable cultivar for blackening. Red jujubes were blackened by aging a...

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Veröffentlicht in:International journal of food properties 2022-12, Vol.25 (1), p.1576-1590
Hauptverfasser: Song, Yaru, Chen, Chang, Wang, Fangzhou, Zhang, Yanlei, Pan, Zhongli, Zhang, Rentang
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container_issue 1
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container_title International journal of food properties
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creator Song, Yaru
Chen, Chang
Wang, Fangzhou
Zhang, Yanlei
Pan, Zhongli
Zhang, Rentang
description This study aimed to quantitatively assess the physicochemical properties and antioxidant activities of seven jujube cultivars (NYDZ, MZ, TZ, HZ, HTDZ, GTZ, and JSXZ) before and after the blackening process and to select the most suitable cultivar for blackening. Red jujubes were blackened by aging at high temperature (75°C) and humidity (80%) conditions for 6 days. The contents of soluble solids, total phenolics, total flavonoids, polysaccharides, cyclic adenosine monophosphate, 5-hydroxymethylfurfural, and antioxidant activities were analyzed using the spectrophotometric method and high-performance liquid chromatography (HPLC). Results showed that the antioxidant activities of all cultivars were significantly enhanced (p
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Red jujubes were blackened by aging at high temperature (75°C) and humidity (80%) conditions for 6 days. The contents of soluble solids, total phenolics, total flavonoids, polysaccharides, cyclic adenosine monophosphate, 5-hydroxymethylfurfural, and antioxidant activities were analyzed using the spectrophotometric method and high-performance liquid chromatography (HPLC). Results showed that the antioxidant activities of all cultivars were significantly enhanced (p &lt; .05) and the contents of selected bioactive compounds in all cultivars increased after blackening, indicating that blackened jujube had higher nutritional value than red jujube. Correlation analysis showed that the total phenolic compounds were the primary source of jujube antioxidant activities. The heat map showed that HTDZ could be selected as the most suitable cultivar for future production of blackened jujube. Red jujube cultivar with high total phenolic content was the best choice for blackening.</description><identifier>ISSN: 1094-2912</identifier><identifier>EISSN: 1532-2386</identifier><identifier>DOI: 10.1080/10942912.2022.2093361</identifier><language>eng</language><publisher>Abingdon: Taylor &amp; Francis</publisher><subject>Aging ; Antioxidant activity ; Antioxidants ; Bioactive compounds ; Blackening processing ; Correlation analysis ; Cultivars ; Cyclic AMP ; Flavonoids ; High temperature ; High-performance liquid chromatography ; Jujube ; Leaves ; Nutritive value ; Phenolic compounds ; Physicochemical properties ; Polysaccharides ; Spectrophotometry ; Ziziphus jujuba</subject><ispartof>International journal of food properties, 2022-12, Vol.25 (1), p.1576-1590</ispartof><rights>2022 Yaru Song, Chang Chen, Fangzhou Wang, Yanlei Zhang, Zhongli Pan and Rentang Zhang. Published with license by Taylor &amp; Francis Group, LLC. 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Red jujubes were blackened by aging at high temperature (75°C) and humidity (80%) conditions for 6 days. The contents of soluble solids, total phenolics, total flavonoids, polysaccharides, cyclic adenosine monophosphate, 5-hydroxymethylfurfural, and antioxidant activities were analyzed using the spectrophotometric method and high-performance liquid chromatography (HPLC). Results showed that the antioxidant activities of all cultivars were significantly enhanced (p &lt; .05) and the contents of selected bioactive compounds in all cultivars increased after blackening, indicating that blackened jujube had higher nutritional value than red jujube. Correlation analysis showed that the total phenolic compounds were the primary source of jujube antioxidant activities. The heat map showed that HTDZ could be selected as the most suitable cultivar for future production of blackened jujube. 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subjects Aging
Antioxidant activity
Antioxidants
Bioactive compounds
Blackening processing
Correlation analysis
Cultivars
Cyclic AMP
Flavonoids
High temperature
High-performance liquid chromatography
Jujube
Leaves
Nutritive value
Phenolic compounds
Physicochemical properties
Polysaccharides
Spectrophotometry
Ziziphus jujuba
title Physicochemical properties and antioxidant activities of jujubes (Ziziphus jujuba Mill.): effect of blackening process on different cultivars
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