在Lactobacillus发酵的莲花根茎汁中,组成变化和颜色进化之间的动态相互作用:布朗宁机制的多变量分析
Rui Huang1, Huiwen Jiang1, Shoulei Yan2
1College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, PR China.
Food research international (Ottawa, Ont.)
|October 11, 2025
概括
莲花根茎汁 (LRJ) 的色通过乳杆菌PE331发酵来抑制. 这一过程增强了抗氧化能力,改变了糖和有机酸的特征,保持了颜色.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 生物化学 生化学
背景情况:
- 莲花根茎汁 (LRJ) 在加工过程中容易发生不良的颜色变化.
- 这些颜色变化会对LRJ产品的商业价值产生负面影响.
- 了解这些变化背后的机制对于改进LRJ处理至关重要.
研究的目的:
- 调查乳杆菌PE331发酵抑制LRJ色的机制.
- 分析发酵莲花根茎汁 (FLRJ) 中的组成变化.
- 确定负责色彩稳定的关键组件.
主要方法:
- 对LRJ进行绝育,然后用乳杆菌PE331.1进行注射.
- 恒温发酵过程.
- 颜色分析 (L*,a*,b*,A420) 的结果.
- 测量抗氧化剂潜力 (总,DPPH激素清除能力 (DSA),总抗氧化剂能力 (TAC),甲酸).
- 减少糖和有机酸的量化.
- 相关性分析 (CA) 和主要组件分析 (PCA).
主要成果:
- 发酵显著增加了L*值,同时降低了LRJ的a*,b*和A420值.
- 抗氧化能力 (总,DSA,TAC) 增加,甲酸含量保持不变.
- 减少糖,特别是葡萄糖和乳糖,显著下降.
- 有机酸含量增加,乳酸占据了突出地位.
- CA和PCA确定了减少糖耗尽,有机酸生产和增强抗氧化能力作为主要的色抑制途径.
结论:
- 乳杆菌PE331发酵通过改变其生物化学成分,有效地抑制LRJ的色.
- 抑制色的关键因素包括降低降解糖,增加有机酸 (如乳酸) 和增强的抗氧化特性.
- 葡萄糖,乳酸,酸和酸等特定成分在颜色稳定中起着重要作用.
相关概念视频
Changes in Skin Color: Clinical Perspectives
3.3K
The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
3.3K
Ladder Diagrams: Redox Equilibria
768
Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
768


