埃斯塔马兰枣:发酵过程中的化学和微生物动态
Leila Nosratabadi1, Hamid-Reza Kavousi1, Reza Hajimohammadi-Farimani2,3
1Faculty of Agriculture, Department of Biotechnology, Shahid Bahonar University of Kerman, Kerman, Iran.
概括
这项研究研究了使用文化依赖的方法对枣发酵的研究. 埃斯塔马兰品种表现出更严重的发酵,产生了理想的性质,并被推用于生产.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 的生产依赖于微生物的新陈代谢.
- 枣棕 (Phoenix dactylifera L.) 的果实是发酵的潜在基质.
- 了解微生物动力学对于优化发酵至关重要.
研究的目的:
- 为了识别和描述两个枣树品种 (Estamaran和Kabkab) 发酵期间的细菌菌群.
- 分析在枣发酵过程中发生的化学变化.
- 为了确定不同棕树品种适合生产.
主要方法:
- 用一种依赖培养的方法来研究细菌动力学.
- 进行了16S rRNA基因的聚合酶链反应 (PCR) 放大.
- 限制酶分析 (HinfI和TaqI) 和测序用于微生物识别.
- 进行化学分析以评估降解糖,pH,酸度和化合物的变化.
主要成果:
- 最初的发酵阶段涉及到Fructobacillus tropaeoli,Bacillus sp.,Leuconostoc spp.和Weissella paramesenteroides.这些细菌的发酵过程中,它们的发酵过程是非常简单的.
- 随着发酵的进展,微生物的多样性下降,后期确定了Komagataeibacter xylinus作为一个关键的酸生产者.
- 埃斯塔马兰品种的发酵导致降解糖的显著减少,酸度和总化合物的增加以及pH值的下降,从而产生了理想的特性.
结论:
- 由于其有利的发酵概况,推使用埃斯塔马兰棕品种生产高质量的枣.
- 微生物的识别和表征对于生物管理和改善枣发酵至关重要.
- 枣生产为枣果提供了有价值的应用,埃斯塔马兰显示出更高的潜力.
更多相关视频
09:19Capturing Actively Produced Microbial Volatile Organic Compounds from Human-Associated Samples with Vacuum-Assisted Sorbent Extraction
Published on: June 1, 2022
4.0K
08:43PTR-ToF-MS Coupled with an Automated Sampling System and Tailored Data Analysis for Food Studies: Bioprocess Monitoring, Screening and Nose-space Analysis
Published on: May 11, 2017
12.4K
相关概念视频
01:20Fates of Pyruvate
8.4K
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
8.4K
01:29Fermentation
113.9K
Most eukaryotic organisms require oxygen to survive and function adequately. Such organisms produce large amounts of energy during aerobic respiration by metabolizing glucose and oxygen into carbon dioxide and water. However, most eukaryotes can generate some energy in the absence of oxygen by anaerobic metabolism.
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
113.9K
00:53Extraction: Effects of pH
483
Consider a neutral form of an amine, B, with a partition coefficient, K, in a liquid mixture containing organic and aqueous phases. The pH of the aqueous phase affects the charge on acidic and basic solutes, and the charged form is usually more soluble in the aqueous phase. Suppose the conjugate acid form of the amine is soluble only in the aqueous phase while the base form is soluble in both phases. Then the distribution coefficient, D, can be given as the ratio of amine concentration in the...
483
00:53Products of the Citric Acid Cycle
98.8K
The cells of most organisms—including plants and animals—obtain usable energy through aerobic respiration, the oxygen-requiring version of cellular respiration. Aerobic respiration consists of four major stages: glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation. The third major stage, the citric acid cycle, is also known as the Krebs cycle or tricarboxylic acid (TCA) cycle.
98.8K
01:18Surface Membrane Barriers
1.1K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
1.1K