Plant-Based Milk Fermentation Using Lactic Strains to Cut Aldehyde Odor

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Solution Overview

Problem

Plant-based milk often contains aldehydes that cause unpleasant odors, which are difficult to reduce using existing methods, especially in fermented beverages.

Innovation Solution

A method involving the use of specific lactic acid bacterial strains, such as Lactobacillus fermentum CP1299, Lactobacillus fermentum CP3024, Lactobacillus reuteri CP3017, and Lactobacillus reuteri CP3019, to ferment plant-based milk, reducing aldehyde content and improving flavor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If plant-based milk is prepared by size reduction and liquefaction of plant material, then the product contains aldehydes as flavor components, but these aldehydes cause unpleasant odors due to unfavorable plant odors

Engineering Contradiction:
Improvemanufacturing processVSAvoidunpleasant odor
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent applies this principle by using specific lactic acid bacteria (Lactobacillus fermentum CP1299, Lactobacillus fermentum CP3024, Lactobacillus reuteri CP3017, and Lactobacillus reuteri CP3019) to convert the harmful aldehydes into beneficial alcohols through fermentation. The bacteria metabolize the aldehyde compounds that cause unpleasant plant odors and transform them into alcohol compounds that contribute to desirable fermented-milk-like flavors, effectively turning the odor problem into a flavor enhancement opportunity

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent applies this principle by changing the chemical composition parameters of the plant-based milk through controlled fermentation. The specific lactic acid bacteria strains modify the aldehyde content and generate alcohol byproducts, thereby changing the flavor profile parameters from unfavorable plant odors to desirable fermented-milk-like flavors with balanced sweetness and sourness

Inventive Principle:
Principle #35Parameter changes

2Quantity of substance

If existing methods use Lactobacillus sakei for lactic acid fermentation, then diacetyl and hexanal amounts are reduced, but the plant odor issue remains insufficiently addressed

Engineering Contradiction:
Improvealdehyde contentVSAvoidplant odor
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent applies this principle by introducing specific lactic acid bacteria strains as intermediary agents that facilitate the conversion of aldehydes to alcohols. These bacteria act as biological mediators between the plant-based milk substrate and the desired flavor outcome, enabling the transformation of harmful aldehyde compounds into beneficial alcohol compounds that achieve the target fermented-milk-like flavor profile

Inventive Principle:
Principle #24Intermediary (Mediator)

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 reduces aldehyde levels, resulting in a plant-based milk-fermented liquid with reduced plant odor, improved taste, and a balanced sweetness and sourness.

Implementation Method 1

bringing a plant-based milk into contact with a lactic acid bacterial strain(s) including at least one selected from the group consisting of the Lactobacillus fermentum CP1299 strain, the Lactobacillus fermentum CP3024 strain, the Lactobacillus reuteri CP3017 strain, and the Lactobacillus reuteri CP3019 strain

Methodology Applied
Scientific EffectFermentation: Fermentation

Implementation Method 2

to cause reduction of the medium-chain aldehydes to alcohols

Methodology Applied
Scientific EffectEnzyme: Enzyme

Data Source

PatentUS12616220B2Method for producing plant-based milk-fermented liquid
Publication Date: 2026.05.05 ASAHI GRP HLDG LTD
  • US12616220B2 patent drawing
  • US12616220B2 patent drawing
  • US12616220B2 patent drawing

AI summary

Provided is a method for producing a plant-based milk-fermented liquid having reduced plant smell. The method includes bringing a plant-based milk into contact with a lactic acid bacterial strain(s) including at least one selected from the group consisting of the Lactobacillus fermentum CP1299 strain, the Lactobacillus fermentum CP3024 strain, the Lactobacillus reuteri CP3017 strain, and the Lactobacillus reuteri CP3019 strain.