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电流干燥yacon的过程和质量参数:乙醇处理的影响

P G Silveira¹, C R de P Silva¹, J L G Corrêa¹

¹Department of Food Science, Federal University of Lavras, Lavras, Brazil.

Food research international (Ottawa, Ont.)

|January 1, 2024

概括

乙醇处理 (ET) 减少了yacon的干燥时间和能源消耗. 虽然ET降解果类糖 (FOS),但它保留了抗氧化活性,50°C的干燥提供了质量和效率的最佳平衡.

科学领域:

食品科学与技术食品科学与技术
农业工程农业工程
生物化学生化学

背景情况:

雅康 (Smallanthus sonchifolius) 是一种易腐烂的根植作物,富含果醇糖 (FOS),是一种有价值的益生菌.
电流干燥是保存yacon的一种常见方法,但它可能耗时且耗费大量能量.
乙醇处理 (ET) 被探索为预干燥步骤,以提高保质期和减少加工时间.

研究的目的:

评估乙醇处理 (ET) 和干燥温度 (50°C和70°C) 对yacon质量和工艺参数的影响.
为了确定yacon切片的对流干燥的最佳条件,考虑干燥动力学,能源消耗和质量属性.
评估果的保留,含量,抗氧化能力,以及颜色和收缩等物理性质.

主要方法:

雅康切片经过了带有和没有先前的乙醇处理 (ET) 的对流干燥.
干燥在两个温度下进行:50°C和70°C.
分析的关键参数包括干燥时间,有效扩散率,能量消耗,果糖保留,总含量,抗氧化能力,颜色,收缩和微观结构变化.

主要成果:

通过诱导结构变化,ET显著减少了干燥时间 (高达28%) 和能源消耗 (高达22.72%).
颜色,收缩和总含量等质量参数在治疗过程中没有显著差异.
乙醇治疗增强了抗氧化剂活性的保存,但导致了FOS降解. 在50°C用ET干燥时,产生了最高的果糖保留率 (55.11 ± 2.19%).

结论:

乙醇处理有效地加快了yacon的对流干燥,并降低了能源需求.
在乙醇预处理后以50°C的温度干燥yacon提供了最好的妥协,以保持关键的质量属性,包括抗氧化能力和果含量.
虽然ET影响FOS水平,但加工效率和质量保护的整体好处使其成为yacon加工的可行选择.

关键词:

能源效率能源效率是指能源的使用效率.果子橄糖化合物果子橄糖化合物马兰戈尼效应是什么意思类化合物是一种类化合物.益生菌益生菌益生菌

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