Chlorogenic Acid Injection for Citrus HLB Control
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Solution Overview
Problem
Citrus huanglongbing (HLB) is a devastating disease affecting citrus production worldwide, with current control strategies facing challenges such as environmental and health risks, and the potential development of antibiotic resistance.
Innovation Solution
The use of chlorogenic acid and chlorogenic acid-rich substances, such as green coffee bean extract, as a bacteriostatic agent to inhibit Candidatus Liberibacter asiaticus (CLas), the bacterium responsible for HLB, through leaf or trunk injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antibiotics are used to combat HLB disease, then the inhibitory effect on CLas is improved, but environmental and health risks increase and antibiotic resistance may develop
Solution Approach 1:
The patent changes the chemical parameter from synthetic antibiotics to natural plant metabolites (chlorogenic acid). This parameter change maintains the antibacterial effect against CLas while eliminating the harmful side effects associated with antibiotics, including environmental pollution, health risks, and resistance development.
Solution Approach 2:
The patent employs a readily available, naturally occurring metabolite (chlorogenic acid) that can be continuously produced by plants without depleting resources. This replaces expensive, potentially harmful antibiotics with a sustainable, renewable natural compound that degrades safely in the environment.
2Object-affected harmful factors
If chlorogenic acid is used to inhibit CLas, then environmental safety is improved, but the inhibitory concentration required is higher compared to antibiotics
Solution Approach 1:
The patent changes the concentration parameter by optimizing the delivery method through trunk injection, which ensures high bioavailability and systemic distribution of chlorogenic acid throughout the tree. This delivery optimization allows effective concentrations to be achieved without requiring excessively high application rates, balancing environmental safety with practical efficacy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Chlorogenic acid demonstrates a significant inhibitory effect on CLas, reducing bacterial content by approximately 60% when injected into HLB-infected trees, and shows promise as a safer, more effective alternative to traditional antibiotics.
Implementation Method 1
a green and safe metabolite that can significantly inhibit the activity of CLas, chlorogenic acid, has been identified
Implementation Method 2
the chlorogenic acid can activate citrus defense responses and salicylic acid signaling pathways
Data Source
AI summary
Provided is a use of chlorogenic acid and a chlorogenic acid-rich substance in control of citrus huanglongbing (HLB); where a bacteriostatic agent includes the chlorogenic acid, and the chlorogenic acid has an effective concentration of greater than or equal to 0.5 mg/mL. In the present disclosure, an antibacterial test of the chlorogenic acid on Candidatus Liberibacter asiaticus (CLas) has confirmed that the chlorogenic acid shows a significant inhibitory effect on the CLas. It is also proven in the field that application of the chlorogenic acid exhibits an obvious therapeutic effect on diseased trees to be treated, indicating application prospects of the chlorogenic acid in controlling the citrus HLB. Moreover, the chlorogenic acid, as a green, natural, and non-toxic bioactive substance, is widely used in medical, food, and health care industries, with convenient sources, controllable costs, and strong feasibility.