AI Article Synopsis
- Conventional microbial treatments struggle against new synthetic dyes, particularly anthraquinone dyes like reactive blue 19 (RB19).
- Tea residue, specifically unfermented West Lake Longjing tea, has been identified as an effective activator for improving the decolorization of RB19 by a bacterial strain called DDMY2.
- Key components in the tea residue, especially epigallocatechin gallate (EGCG), were shown to significantly enhance treatment performance and influence the community structure of DDMY2, suggesting EGCG is crucial for boosting decolorization efficiency.
Article Abstract
Conventional microbial treatments are challenged by new synthetic refractory dyes. In this work, tea residue was found serving as an effective activator to boost the decolorization performance of anthraquinone dye (reactive blue 19, RB19) by a new bacterial flora DDMY2. The unfermented West Lake Longjing tea residue showed the best enhancement performance. Seventeen main kinds of components in tea residue had been selected to take separate and orthogonal experiments on decolorization of RB19 by DDMY2. Results suggested epigallocatechin gallate (EGCG) in tea residue played important roles in boosting the treatment performance. Illumina MiSeq sequencing results confirmed that EGCG and tea residue pose similar impact on the change of DDMY2 community structure. Some functional bacterial genera unclassified_o_Pseudomonadales, Stenotrophomonas and Bordetella were enriched during the treatment of RB19 by EGCG and tea residue. These evidences suggested EGCG might be the key active component in tea residue that responsible for the enhancement effect on decolorization performance. These results revealed the activating mechanism of tea residue from the perspective of composition.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.chemosphere.2019.05.205 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluation of 9,10-anthraquinone contamination in tea products from Indonesian manufacturers and its carcinogenic risk to consumer health.
Food Chem Toxicol
January 2025
European Union Reference Laboratory for Pesticide Residues in Fruit & Vegetables, University of Almeria, Agrifood Campus of International Excellence (ceiA3), Ctra. Sacramento S/N°, La Cañada de San Urbano, 04120, Almería, Spain. Electronic address:
This study aimed to determine 9,10-anthraquinone (AQ) levels in Indonesian tea products from different manufacturers and assess the AQ's associated health risks. AQ levels increased significantly during withering and drying stages, using pinewood as a heat source. Generally, black tea was highly contaminated by AQ followed by green tea, oolong tea, and white tea.
View Article and Find Full Text PDFYerba mate () genome provides new insights into convergent evolution of caffeine biosynthesis.
Elife
January 2025
IQUIBICEN-CONICET, Ciudad Universitaria, Pabellón 2, Ciudad Autonoma de Buenos Aires, Argentina.
Yerba mate (YM, ) is an economically important crop marketed for the elaboration of mate, the third-most widely consumed caffeine-containing infusion worldwide. Here, we report the first genome assembly of this species, which has a total length of 1.06 Gb and contains 53,390 protein-coding genes.
View Article and Find Full Text PDFInhibitory Effect and Mechanism of Dancong Tea from Different Harvesting Season on the α-Glucosidase Inhibition In Vivo and In Vitro.
Foods
December 2024
School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
Tea polyphenols have been reported to decrease the rate of starch hydrolysis by inhibiting α-glucosidase. However, the effect of the tea harvesting season and the structure of catechin monomers on the inhibitory activity of α-glucosidase is not understood. In this study, the inhibitory effect and underlying mechanism of four seasons of Dancong tea against α-glucosidase were investigated by in vivo and in vitro experiments, multi-spectroscope and molecular dynamic.
View Article and Find Full Text PDFAn Electrochemiluminescence Biosensor for Detection of Methyl Parathion With a Novel Probe Ru-MIL-100 via the Acetylcholinesterase Inhibition Coupled With the Reaction Between HAc and Triethylamine.
Luminescence
January 2025
College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China.
It is of great significance to develop sensors for trace pesticide residues detection in food. Herein, an electrochemiluminescence (ECL) sensor with high sensitivity for the detection of methyl parathion (MP) was constructed by combining of the acetylcholinesterase (AChE) enzyme-inhibited reaction with tris-2,2'-bipyridyl ruthenium Ru(bpy) -triethylamine (TEA) system for the first time. A new ECL probe of MIL-100 loaded with Ru(bpy) (Ru-MIL-100) was synthesized, and then Ru-MIL-100 and AChE were immobilized on the electrode with Nafion.
View Article and Find Full Text PDFInhibitory mechanisms of galloylated forms of theaflavins on α-glucosidase.
Int J Biol Macromol
January 2025
School of Biological and Chemical Engineering, NingboTech University, Ningbo 315100, China. Electronic address:
Theaflavins, oxidation product of tea polyphenols, have demonstrated significant inhibitory effects on α-glucosidase, which is beneficial in alleviating hyperglycemia. This study found that the inhibition of four monomers of theaflavins on α-glucosidase was related to the presence of the galloyl moiety (GM), with IC values ranging from TFDG (0.26 mg/mL) < TF3'G (0.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!