Allulose Syrup Composition for pH-Stable High-Solids Storage

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Solution Overview

Problem

Allulose syrups are susceptible to degradation, color formation, impurity formation, crystallization, and inadequate microbial stability, which affects their shelf-life and quality.

Innovation Solution

An allulose syrup with a total dry solids content of 50% to 80% and allulose content of at least 80% by weight, pH ranging from 2.5 to 6.0, and optionally including stability-enhancing additives like antioxidants and buffers, is formulated to enhance storage stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If allulose syrup is formulated with high allulose content (at least 80% by weight on dry solids basis), then the sweetness and functional properties are improved, but the syrup becomes susceptible to degradation, color formation, and impurity formation over time

Engineering Contradiction:
Improveallulose contentVSAvoidstorage stability
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The patent applies parameter changes by carefully controlling the pH of the allulose syrup within a specific range (2.5 to 6.0) and maintaining total dry solids content between 50% to 80%. This optimization of physical and chemical parameters prevents degradation, color formation, and impurity formation while preserving high allulose content (at least 80% by weight on dry solids basis), thereby resolving the contradiction between quantity of allulose and storage stability.

Inventive Principle:
Principle #35Parameter changes

2Duration of action of stationary object

If the allulose syrup is stored for extended periods (over 12 months), then the shelf-life is improved, but degradation and formation of impurities such as HMF occur

Engineering Contradiction:
Improveshelf-lifeVSAvoidimpurity formation (HMF)
Core Design Contradiction:
Duration of action of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent applies preliminary anti-action by pre-adjusting the pH of the allulose syrup to within the range of 2.5 to 6.0 before storage. This preliminary adjustment creates a stable chemical environment that prevents or minimizes the formation of harmful impurities such as HMF during extended storage periods, enabling the syrup to maintain high allulose content (at least 80% by weight on dry solids basis) for over 12 months without significant degradation.

Inventive Principle:
Principle #9Preliminary anti-action

3Quantity of substance

If the allulose syrup maintains high allulose content (at least 80% by weight on dry solids basis), then the sweetness intensity is improved, but crystallization occurs during storage

Engineering Contradiction:
Improveallulose contentVSAvoidcrystallization resistance
Core Design Contradiction:
Quantity of substanceVSStability of the object's composition

Solution Approach 1:

The patent applies parameter changes by controlling the pH within the range of 2.5 to 6.0 and adjusting the total dry solids content to 50% to 80%. These parameter modifications affect the solubility and physical state of allulose, preventing crystallization while maintaining high allulose content (at least 80% by weight on dry solids basis) and ensuring the syrup remains in a stable liquid state during storage.

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 formulated allulose syrup maintains an allulose content of at least 80% by weight for at least 3 months, and up to 95% for over 12 months, while minimizing impurities like HMF and color formation.

Implementation Method 1

wherein the pH of the syrup is from 2.5 to 6.0

Methodology Applied
Scientific EffectpH control:

Implementation Method 2

having a total dry solids content of from 50% to 80% by weight, and comprising allulose in an amount of at least 80% by weight on a dry solids basis

Methodology Applied
Scientific Effectdry solids content control:

Data Source

PatentUS12550923B2Allulose syrups
Publication Date: 2026.02.17 TATE & LYLE SOLUTIONS USA LLC
  • US12550923B2 patent drawing
  • US12550923B2 patent drawing
  • US12550923B2 patent drawing

AI summary

The present invention relates to allulose syrups, use of allulose syrups in the manufacture of food or beverage products, and food and beverage products made using the allulose syrups.