Changes in the psysical-chemical composition, total polyphenols and antioxidant activity of fresh celery (Apium graveolens L.) dehydrated by hot air and by lyophilization

Q4 Agricultural and Biological Sciences

AgriScientia Pub Date : 2019-12-24 DOI:10.31047/1668.298x.v36.n2.24036

R. Ordoñez-Araque, Christian Narváez-Aldáz

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引用次数: 3

Abstract

The food industry aims at offering food that provides not only nutritional but also functional properties. Celery has been used for a long time, but its bioactive compounds have remained unknown. The objective of this research is to measure the changes in the physical and chemical characteristics, total polyphenols (TP) and antioxidant activity (AA) after applying hot air dehydration (DA) and lyophilization (LF) with two different cut types: rod-shaped (R) and sliced (S). It was found that dehydration treatments can enhance some characteristics in celery. When comparing the results, the treatment of (LF-S) presented the best characteristics with less water activity, 46 % of total dietary fiber constituted by 41 % of insoluble fiber and 5 % soluble fiber, 377.69 mg GAE/100g in total polyphenol content and an antioxidant activity of 82.17 μmol TE/100g. These results allow to conclude that celery is a raw material with functional attributes and that it can be industrialized with dehydration technologies, which will enable a long useful life for its bioactive compounds.

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新鲜芹菜经热风脱水和冻干后理化成分、总多酚和抗氧化活性的变化

食品工业旨在提供不仅具有营养而且具有功能特性的食品。芹菜已经使用了很长时间，但其生物活性化合物仍然未知。本研究的目的是测量棒形（R）和切片（S）两种不同切片类型应用热空气脱水（DA）和冷冻干燥（LF）后物理和化学特性、总多酚（TP）和抗氧化活性（AA）的变化。研究发现，脱水处理可以增强芹菜的某些特性。结果表明，（LF-S）处理具有水活性低、总膳食纤维46%由41%的不溶性纤维和5%的可溶性纤维组成、总多酚含量为377.69mgGAE/100g和抗氧化活性为82.17μmol/100g的最佳特性。这些结果可以得出结论，芹菜是一种具有功能属性的原料，可以通过脱水技术进行工业化，这将使其生物活性化合物具有较长的使用寿命。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

AgriScientia Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

0.30

自引率

0.00%

发文量

审稿时长

22 weeks

期刊介绍： AgriScientia es una revista de acceso abierto, de carácter científico-académico, gestionada por el Área de Difusión Científica de la Facultad de Ciencias Agropecuarias de la Universidad Nacional de Córdoba, Argentina. La revista recibe artículos en los idiomas español e inglés. El objetivo de esta publicación es la difusión de los resultados de investigaciones de carácter agronómico. Está destinada a investigadores, estudiantes de pregrado, grado y posgrado, profesionales en el área de las ciencias agropecuarias y público en general interesado en las temáticas relacionadas. Su periodicidad es semestral. Los artículos se reciben durante todo el año. Los tipos de documentos que se publican son artículos científicos, comunicaciones y revisiones.