Physicochemical, bioactive compounds and antioxidant activities of sweet red corn under different drying methods

IF 1.4 4区生物学 Q3 PLANT SCIENCES

Notulae Botanicae Horti Agrobotanici Cluj-napoca Pub Date : 2023-09-11 DOI:10.15835/nbha51313301

Onanong PHUSEERIT, Theeraphan CHUMROENPHAT

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引用次数: 0

Abstract

This study investigated the physicochemical properties, bioactive compounds, and antioxidant activities of sweet red corn under different drying methods. The color characteristics of the corn varied significantly based on the drying method employed. Freeze-drying resulted in the lightest color, while sun drying and hot air drying at different temperatures showed intermediate and varying color parameters. The total phenolic and flavonoid content decreased after drying, with heat drying methods exhibiting a greater decrease compared to freeze-drying. Microstructural analysis revealed changes in cell structure and starch granules, with freeze-dried samples displaying distinct characteristics. The sugar content decreased in all drying methods compared to the fresh sample. The amino acid content also decreased after drying, with heat drying methods affecting certain amino acids more than others. Different phenolic acids and flavonoids were detected, with their concentrations varying depending on the drying method. Fresh corn exhibited the highest antioxidant activity, while freeze-drying retained a significant amount. Sun drying and high-temperature drying methods resulted in decreased antioxidant activity. These findings underscore the importance of selecting appropriate drying techniques to preserve desired attributes and beneficial properties of corn.

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不同干燥方式下甜红玉米的理化、生物活性及抗氧化活性

研究了不同干燥方式下甜红玉米的理化性质、生物活性成分及抗氧化活性。玉米的颜色特征因干燥方法的不同而有很大差异。冻干的颜色最浅，不同温度下晒干和热风干燥的颜色参数居中且变化较大。干燥后总酚和类黄酮含量降低，其中热干燥比冷冻干燥降低幅度更大。显微结构分析显示细胞结构和淀粉颗粒的变化，冻干样品显示出明显的特征。与新鲜样品相比，所有干燥方法的糖含量都有所下降。干燥后的氨基酸含量也有所下降，其中热干燥方法对某些氨基酸的影响较大。在不同的干燥方法下，检测到不同的酚酸和类黄酮，其浓度不同。鲜玉米表现出最高的抗氧化活性，而冻干玉米的抗氧化活性较低。日光干燥和高温干燥导致抗氧化活性降低。这些发现强调了选择合适的干燥技术以保持玉米所需的特性和有益特性的重要性。

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来源期刊

Notulae Botanicae Horti Agrobotanici Cluj-napoca PLANT SCIENCES-

CiteScore

2.70

自引率

0.00%

发文量

118

审稿时长

3 months

期刊介绍： Notulae Botanicae Horti Agrobotanici Cluj-Napoca is a peer-reviewed biannual journal aimed at disseminating significant research and original papers, critical reviews and short reviews. The subjects refer on plant biodiversity, genetics and plant breeding, development of new methodologies that can be of interest to a wide audience of plant scientists in all areas of plant biology, agriculture, horticulture and forestry. The journal encourages authors to frame their research questions and discuss their results in terms of the major questions of plant sciences, thereby maximizing the impact and value of their research, and thus in favor of spreading their studies outcome. The papers must be of potential interest to a significant number of scientists and, if specific to a local situation, must be relevant to a wide body of knowledge in life sciences. Articles should make a significant contribution to the advancement of knowledge or toward a better understanding of existing biological and agricultural concepts. An international Editorial Board advises the journal. The total content of the journal may be used for educational, non-profit purposes without regard to copyright. The distribution of the material is encouraged with the condition that the authors and the source (Notulae Botanicae Horti Agrobotanici Cluj-Napoca or JCR abbrev. title Not Bot Horti Agrobo) are mentioned.