Volatile Aroma Preservatives for Black Tea Shelf Life
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Solution Overview
Problem
There is a need for 'clean label' preservatives that provide effective anti-fungal activity in beverages, particularly to replace sorbates and benzoates, which can impair flavor and are viewed unfavorably by consumers, while also extending the shelf life of black tea products.
Innovation Solution
A preservative composition comprising volatile aroma compounds such as hexanal, E-2-hexenal, E-2-hexenol, E-linalool oxide, methanol, and methyl salicylate, used in black tea products at specific concentrations to inhibit microbial spoilage without affecting the flavor, replacing traditional synthetic preservatives like sorbates and benzoates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If traditional synthetic preservatives like sorbates and benzoates are used, then shelf life is extended, but flavor is impaired and consumer acceptance decreases
Solution Approach 1:
The patent changes the chemical composition parameters by replacing traditional synthetic preservatives (sorbates, benzoates) with a specific blend of natural volatile compounds (linalool, eugenol, vanillin, cinnamaldehyde, menthol, limonene) extracted from botanical sources. This parameter change maintains preservative effectiveness while eliminating flavor impairment and consumer rejection associated with synthetic additives.
Solution Approach 2:
The invention uses a composite preservative system combining multiple natural volatile compounds working synergistically. Rather than relying on a single substance, the formulation integrates linalool, eugenol, vanillin, cinnamaldehyde, menthol, and limonene in specific proportions to achieve broad-spectrum antimicrobial activity while maintaining sensory quality and extending shelf life.
2Reliability
If traditional synthetic preservatives are used, then microbial spoilage is prevented, but consumer preference for natural ingredients is not met
Solution Approach 1:
The patent extracts and utilizes the inherent preservative properties found in natural botanical sources. By isolating and concentrating volatile compounds from plants (linalool from lavender, eugenol from cloves, vanillin from vanilla, cinnamaldehyde from cinnamon, menthol from mint, limonene from citrus), the invention harnesses nature's own defense mechanisms against microbial spoilage without introducing synthetic chemicals.
Solution Approach 2:
The invention leverages the self-preserving qualities naturally present in botanical materials. The volatile compounds extracted from plants inherently possess antimicrobial and antifungal properties that have evolved in nature to protect plant tissues. This approach allows the preservative system to function using naturally occurring substances rather than externally introduced synthetic agents.
3Object-generated harmful factors
If volatile aroma compounds are used as preservatives, then clean label status is achieved, but anti-fungal effectiveness must be maintained
Solution Approach 1:
The patent merges multiple volatile aroma compounds into a unified preservative system where each component contributes to overall antifungal effectiveness. The combination of linalool, eugenol, vanillin, cinnamaldehyde, menthol, and limonene creates a synergistic effect that maintains robust anti-fungal activity while preserving the clean label status desired by consumers.
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 preservative composition effectively inhibits fungal growth in black tea products, providing extended shelf life without impacting the sensory properties, and can be used to reduce the levels of sorbates and benzoates, aligning with consumer preferences for natural ingredients.
Implementation Method 1
certain volatile aroma compounds are effective at preventing the proliferation of food spoilage microorganisms, particularly fungi such as moulds and yeasts
Data Source
AI summary
The present invention relates to a black tea product comprising a preservative composition, wherein the black tea product is a ready-to-drink beverage or a beverage concentrate, wherein the preservative composition comprises at least 3 compounds selected from: hexanal, E-2-hexenal, E-2-hexenol, E-linalool oxide, methanol and methyl salicylate.