Continuous Pipe Reactor Base Treatment for 3-MCPD Reduction
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Solution Overview
Problem
The refining process of vegetable oils introduces high levels of 3-monochloropropane-1,2-diol fatty acid esters (3-MCPD esters), leading to concerns over food safety and quality.
Innovation Solution
A process involving the treatment of deodorized vegetable oil with a base in a continuous pipe reactor, followed by contacting the base-treated oil with an adsorbent and/or acid, to reduce the content of 3-MCPD esters while maintaining a low degree of interesterification and dialkylketones (DAK) content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the refining process is carried out at high temperatures during deodorization, then the oil purification is improved, but the formation of 3-MCPD esters and other harmful compounds increases
Solution Approach 1:
The patent applies preliminary action by treating the deodorized oil with a base (such as potassium hydroxide or sodium hydroxide) before the harmful compounds can cause issues. This base treatment occurs in advance to neutralize and remove 3-MCPD esters and other harmful substances formed during high-temperature deodorization, thereby preparing the oil for subsequent refining steps without the harmful compounds interfering with the process.
Solution Approach 2:
The patent uses an intermediary substance (base) to mediate between the high-temperature deodorization process and the final oil product. The base acts as a mediator that interacts with the harmful compounds formed during deodorization, neutralizing them and preventing them from remaining in the final oil, thus allowing high-temperature processing to occur while still achieving safe final product.
2Object-generated harmful factors
If base treatment is applied to reduce 3-MCPD esters, then the harmful compound content is reduced, but the degree of interesterification and DAK formation increases
Solution Approach 1:
The patent applies parameter changes by carefully controlling the base treatment parameters, specifically using controlled amounts of base (0.01-1.0 mmol/kg oil) and controlling the treatment conditions. By adjusting these parameters, the process achieves sufficient reduction of 3-MCPD esters while minimizing unwanted side reactions such as interesterification and DAK formation, thus optimizing the balance between harmful compound removal and triglyceride structure stability.
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 process effectively reduces the 3-MCPD ester content below 2.5 ppm, maintains a low degree of interesterification, and minimizes DAK formation, thereby producing refined vegetable oils with improved safety and quality.
Implementation Method 1
Treating a deodorized vegetable oil with a base in a continuous pipe reactor
Implementation Method 2
Contacting the base-treated oil with an adsorbent and/or acid
Data Source
AI summary
A process for manufacturing a refined vegetable oil having a reduced content of 3-monochloropropane-1.2-diol fatty acid (3-MCPD) esters characterized in that it comprises the following steps: treating a deodorized vegetable oil with a base in a continuous pipe reactor, and contacting the base treated oil with an adsorbent and/or an acid. The thus obtained oil is low in 3-MCPD and has a low degree of interesterification and a low dialkylketones (DAK) content. It further relates to the use a continuous pipe reactor for treating a deodorized vegetable oil with a base wherein 3-MCPD ester content is reduced in the oil.