Natural pH Indicator Extracts for Agricultural Compounds
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Solution Overview
Problem
Chemical pH indicators used in agricultural compounds are being rejected by regulatory authorities due to their non-natural composition, posing a challenge in maintaining the desired pH levels for crop and animal treatments.
Innovation Solution
A naturally occurring pH indicator, such as extracts from grape skins, cabbage, or lichen, is used to indicate pH levels within the range of 4 to 6, replacing chemical indicators and ensuring compliance with regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical pH indicators (methyl red, resorcin blue, etc.) are used to determine pH levels in agricultural compounds, then the desired pH control is achieved, but the product is rejected by regulatory authorities due to non-natural composition
Solution Approach 1:
The patent changes the chemical composition parameter of the pH indicator from synthetic chemicals (methyl red, resorcin blue) to natural substances (grape extract, cabbage extract, lichen extract). This parameter change maintains the pH indication function while achieving regulatory compliance, as natural extracts are approved for agricultural use.
Solution Approach 2:
The patent substitutes expensive and restricted chemical indicators with inexpensive, readily available natural extracts from common plants. These natural indicators are biodegradable and pose no environmental harm, making them acceptable for agricultural applications where chemical indicators are prohibited.
2Object-affected harmful factors
If natural pH indicators are used instead of chemical indicators, then regulatory compliance is achieved, but the concentration required for visible colour change increases
Solution Approach 1:
The patent uses composite natural extracts containing multiple pH-sensitive compounds (anthocyanins in grape extract, various pigments in cabbage and lichen extracts). These composite materials provide sufficient colour change visibility at higher concentrations while maintaining natural status for regulatory compliance.
3Quantity of substance
If higher concentrations of natural pH indicators are used, then visible colour change is achieved, but the volume of the concentrate increases
Solution Approach 1:
The patent segments the pH indicator function from the main agricultural compound by using a separate concentrate containing the natural indicator. This concentrate is added in controlled amounts to achieve the desired pH indication without significantly increasing the overall volume of the agricultural application solution.
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
The use of natural pH indicators allows for effective pH control in agricultural compounds without adverse effects on crops or animals, meeting regulatory requirements and ensuring the agricultural activity remains within acceptable limits.
Implementation Method 1
These pH indicators change colour when the pH is changed and accordingly, provide a visual indicator as to when the desired pH is reached
Data Source
AI summary
This invention discloses a new class of pH indicators suitable for use in agricultural compounds. The class comprises naturally occurring substances which are extracts from grape skins, cabbage and lecithin. Safety concerns are now causing regulatory bodies to prohibit use of chemical pH indicators in compounds which are used for crops and animals. The naturally occurring compounds of this invention satisfy these concerns of the regulators and function as well as chemical indicators of the prior art.