Refined Edible Oil Processing for Light Exposure Odor Control

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Solution Overview

Problem

Existing methods to improve light exposure odor in edible oils and/or fats, such as using arachidonic acid, alter the original flavor and are not effective in suppressing unpleasant odors when exposed to light.

Innovation Solution

A method involving the contact of oils and/or fats with ozone followed by distillation, specifically at controlled temperatures and pressures, to decompose and remove the causative compounds of light exposure odor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If arachidonic acid-containing oil and/or fat is added to improve light exposure odor, then light exposure odor is improved, but flavor becomes different from the original flavor

Engineering Contradiction:
Improvelight exposure odorVSAvoidflavor
Core Design Contradiction:
Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent extracts and removes the causative materials of light exposure odor through ozonation and distillation, rather than adding substances to mask the odor. This extraction approach eliminates the harmful odor components while preserving the original flavor profile of the edible oil and/or fat.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs ozone (a strong oxidant) to oxidize and decompose the causative materials of light exposure odor. The ozonation step uses strong oxidation to break down odor-causing compounds, followed by distillation to remove the degraded products, thereby improving light exposure odor without altering flavor.

Inventive Principle:
Principle #38Strong oxidants (Accelerated oxidation)

2Object-affected harmful factors

If high temperature distillation is used to remove odor components, then light exposure odor is improved, but flavor and quality may be affected

Engineering Contradiction:
Improvelight exposure odorVSAvoidflavor quality
Core Design Contradiction:
Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent performs ozonation as a preliminary action before distillation to pre-decompose the odor-causing materials. This preliminary oxidation step reduces the burden on the subsequent distillation process, allowing it to operate at lower temperatures that preserve flavor quality while still effectively removing odor components.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent changes the physical and chemical state of odor-causing materials through ozonation, transforming them into more volatile or water-soluble forms that can be removed at lower distillation temperatures. This parameter change enables odor removal without requiring high-temperature distillation that would compromise flavor quality.

Inventive Principle:
Principle #35Parameter changes

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 method effectively suppresses the generation of unpleasant flavors in refined edible oils and/or fats even under prolonged light exposure, maintaining the original flavor and improving the odor profile.

Implementation Method 1

bringing an oil and/or fat into contact with ozone

Methodology Applied
Scientific EffectOxidation: Oxidation

Implementation Method 2

it is recognized that the causative material, mechanism, etc., of deteriorations in flavor due to light exposure are different from other oxidative deteriorations

Methodology Applied
Scientific EffectPhoto-oxidation: Photo-oxidation

Implementation Method 3

distilling the oil and/or fat

Methodology Applied
Scientific EffectDistillation: Distillation

Implementation Method 4

the distillation step is a reduced pressure steam distillation

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentUS12616222B2Method for manufacturing refined edible oil and/or fat, method for improving light exposure odor of edible oil and/or fat, and refined edible oil and/or fat
Publication Date: 2026.05.05 THE NISSHIN OILLIO GRP LTD
  • US12616222B2 patent drawing

AI summary

The present invention is to provide a refined edible oil and/or fat whose light exposure odor has been improved, a method for manufacturing the oil and/or fat, and a method for improving light exposure odor of an edible oil and/or fat. Specifically, the present invention relates to a method for manufacturing a refined edible oil and/or fat which includes a step of bringing an oil and/or fat into contact with ozone and a distillation step. The refined edible oil and/or fat is manufactured by the method above.