在埃及土壤细菌中对胡卜素生产和抗氧化能力的表征
Nora Elfeky1,2, Souzan Hassen A Helal2, Abdallah A S Ahmed3
1Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Metabolic Diseases, College of Life Sciences, Anhui Normal University, Wuhu 241000, Anhui, China.
Letters in applied microbiology
|December 22, 2025
概括
研究人员从埃及土壤中分离了产生胡卜素的细菌Exiguobacterium acetylicum和Arthrobacter gandavensis. 优化条件揭示了特定菌株的色素产量和抗氧化性质,突出了在天然胡卜素生产中需要量身定制的方法.
科学领域:
- 微生物学 微生物学
- 生物化学 生物化学
- 自然产品 化学 化学
背景情况:
- 细菌类胡卜素具有有价值的生物活性特性,引发了工业界的兴趣.
- 农业用地是产生新型色素的微生物的潜在来源.
- 优化细菌胡卜素产量需要了解菌株特定的要求.
研究的目的:
- 从埃及农业土壤中分离和识别产生胡卜素的细菌.
- 为选增强细菌色素产量的参数.
- 描述有前途的分离物的胡卜素形状和抗氧化活性.
主要方法:
- 使用标准微生物技术进行细菌分离和鉴定.
- 优化提取溶剂,温度,pH值和胡卜素生产时间.
- 液体染色学-质谱学 (LC-MS) 用于胡卜素分析.
- 氧基吸收能力 (ORAC) 测定用于抗氧化活性评估.
主要成果:
- 鉴定出Exiguobacterium acetylicum和Arthrobacter gandavensis是高产量的胡卜素的生产者.
- 最佳的提取溶剂各不相同:乙用于A. gandavensis,乙:甲醇用于E. acetylicum.
- 颜色产生的峰值发生在48小时和pH值6.0时,菌株特定的最佳温度 (A. gandavensis的35°C,E. acetylicum的25°C).
- A. gandavensis 产生了泽亚桑丁,脱桑丁,细菌素和桑丁,具有显著的抗氧化活性 (421.13 μM TE/mg ORAC).
结论:
- 菌株特异性优化对于最大限度地提高细菌胡卜素产量和纯度至关重要.
- 细菌类胡卜素,例如来自A. gandavensis的胡卜素,提供强大的抗氧化能力.
- 埃及的农业土壤含有有希望的细菌菌株用于天然胡卜素生产.
关键词:
关节菌 gandavensis 是一种这是Exiguobacterium乙酸菌.在 DPPH 的情况下,DPPH 是 DPPH.ORAC. 这是. 我们的 LCMS 是 LCMS抗氧化剂活性 抗氧化剂活性胡卜素是一种胡卜素.更多相关视频
12:36High-throughput Siderophore Screening from Environmental Samples: Plant Tissues, Bulk Soils, and Rhizosphere Soils
Published on: February 9, 2019
13.1K
06:20Author Spotlight: Optimizing Growth Factors for Production of Biotechnologically Relevant Secondary Metabolites
Published on: October 25, 2024
2.8K
相关概念视频
01:26Bacterial Phylum Bacteroidota
526
The phylum Bacteroidota includes over 700 species classified into four primary orders: Bacteroidales, Cytophagales, Flavobacteriales, and Sphingobacteriales. These gram-negative, non-sporulating rods exhibit saccharolytic capabilities and can be aerobic or fermentative, encompassing obligate aerobes, facultative aerobes, and obligate anaerobes. Many species display gliding motility, though some are nonmotile or use flagella. The genus Bacteroides is well-studied due to its significant role in...
526
01:28Anoxygenic Phototrophic Bacteria
724
Anoxygenic phototrophic bacteria are a diverse group of microorganisms that perform photosynthesis without producing oxygen. They primarily include purple sulfur bacteria, purple nonsulfur bacteria, green sulfur bacteria, and green nonsulfur bacteria. These bacteria are classified into the Gammaproteobacteria, Alphaproteobacteria, Betaproteobacteria, Chlorobi, and Chloroflexi lineages, each with distinct physiological and ecological adaptations.Purple sulfur bacteria belong to the...
724
01:30Bacterial Phylum Actinobacteria
572
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
572
01:30Anoxygenic Photosynthesis
1.1K
Anoxygenic photosynthesis is a phototrophic process that captures light energy to drive carbon fixation without producing molecular oxygen. Unlike oxygenic photosynthesis, which utilizes water as an electron donor and releases oxygen, anoxygenic phototrophs use alternative electron donors such as hydrogen sulfide (H₂S), elemental sulfur (S⁰), or thiosulfate (S₂O₃²⁻). This process is carried out by diverse groups of bacteria, including purple bacteria, green...
1.1K
01:28Microbial Nutrition
1.0K
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
1.0K