基于微波的干对片的干燥的影响:一项比较研究
Megaswana Guruprasad1, Jeevitha Gada Chengaiyan2, Faraz Ahmad1
1Department of Biotechnology, School of Bio Science and Technology (SBST), Vellore Institute of Technology (VIT), Vellore 632014, India.
ACS omega
|April 8, 2024
概括
微波 (MW) 干燥漂白使酶失活,并比传统方法更快地在土豆中保留甲酸. 较厚的土豆切片需要更长的漂白时间,MW漂白显示出优越的营养保留.
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 生物化学
背景情况:
- 氧化酶如过氧化酶 (POD) 和多氧化酶 (PPO) 影响食品质量.
- 亚酸 (维生素C) 是一种重要的水溶性营养素,在食品加工过程中经常被降解.
- 白化是一种常见的预处理方法,可以使酶失活并保存营养素.
研究的目的:
- 为了比较基于微波 (MW) 的干与传统的水和蒸汽对土豆片的有效性.
- 为了评估土豆切片厚度对漂白时间和有效性的影响.
- 为了评估甲酸的保留和预测在不同的漂白条件下干燥动力学.
主要方法:
- 不同厚度 (5,8,10毫米) 的土豆切片经过MW干,水和蒸汽.
- 测量了酶非活性化 (POD,PPO) 和酸含量.
- 用薄层干燥模型 (Page,修改的Page,Midilli-Kucuk,Hii,Law,Cloke,Fick's,指数) 来预测5毫米切片的干燥动力学.
主要成果:
- 对于所有土豆切片厚度,MW干比水和蒸汽更快.
- 较厚的切片 (10毫米) 与较薄的切片 (5和8毫米) 相比,需要更长的漂白时间.
- 在MW漂白的样本中,亚酸保持率最高 (77.37-83.5%),其次是蒸汽 (69.15-74.92%) 和水漂白 (67.18-71.54%).
- 佩奇,修改后的佩奇,Midilli-Kucuk和Hii,Law和Cloke模型为5毫米土豆片的薄层干燥提供了更好的预测.
结论:
- 干燥白化是一种有效的酶失活和营养保存方法.
- 优化基于土豆切片厚度的漂白时间对于有效的加工至关重要.
- 与传统方法相比,MW白化在保留甲酸方面具有显著的优势.
- 经验模型是预测和优化片干燥过程的宝贵工具.
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