Antifungal Food Casing Coating with Natamycin and Lipid
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Solution Overview
Problem
Current food casings with antifungal properties are ineffective in preventing mold and yeast growth in dry sausage production due to limitations in natamycin solubility, stability, and compatibility with the casing materials, leading to inadequate inhibition of fungal growth and potential contamination.
Innovation Solution
A water-based composition comprising a film-forming agent, a lipid, and natamycin is applied to the casing surface, enhancing natamycin's availability and anchoring it to the casing, thereby increasing its antifungal effectiveness without affecting the drying process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high concentration of antifungal agent is applied to prevent fungal growth in drying chambers, then antifungal effectiveness is improved, but deposits in machines and poor appearance of casing occur
Solution Approach 1:
The invention changes the physical-chemical parameters of the antifungal agent by using natamycin, which has different solubility and stability characteristics compared to conventional agents. Natamycin maintains effectiveness at lower concentrations and does not cause deposits or appearance defects, thus resolving the contradiction between reliability and ease of manufacture
Solution Approach 2:
The invention applies natamycin specifically to the casing surface where fungal contamination occurs, rather than using high concentrations throughout the entire drying chamber. This localized application maintains antifungal effectiveness while avoiding the negative effects of widespread high-concentration agent distribution
2Reliability
If DDAC is used as antifungal agent in water-soaked casings, then antifungal coverage is improved, but concentration increases in soaking baths leading to safety concerns
Solution Approach 1:
The invention uses natamycin coated on the casing as a single-use, disposable antifungal barrier. The coating provides sufficient protection during the drying process without needing to be reused or maintained in soaking baths, eliminating the safety concern of concentration buildup while maintaining reliable antifungal coverage
3Duration of action of moving object
If conventional antifungals are used to prevent mold and yeast growth, then short-term protection is achieved, but antifungal properties are lost after 4 months
Solution Approach 1:
The invention ensures continuous antifungal protection by using natamycin's exceptional stability. The coating maintains its antifungal properties continuously from application through the entire drying process and beyond, providing uninterrupted protection against mold and yeast without the 4-month limitation of conventional agents
Solution Approach 2:
The invention exploits the unique stability parameters of natamycin, which resists degradation from light, oxygen, heat, and pH changes. This chemical stability allows the antifungal agent to maintain its properties for extended periods, resolving the contradiction between short-term effectiveness and long-term durability
4Reliability
If natamycin is applied to casing surface, then antifungal effectiveness is improved, but natamycin solubility and stability limitations reduce its availability
Solution Approach 1:
The invention uses a coating composition as an intermediary carrier that contains natamycin and facilitates its controlled release. The coating system overcomes natamycin's low water solubility by providing an appropriate matrix that maintains natamycin stability while ensuring gradual availability at the casing surface, thus resolving the contradiction between effectiveness and availability
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 solution effectively inhibits mold and yeast growth on the sausage surface for an extended period, maintaining the natamycin's antifungal properties and ensuring food safety without prolonging the drying time, with the casing remaining active for at least 4 months after manufacturing.
Implementation Method 1
a water-based composition comprising at least, a film-forming agent, a lipid and natamycin
Implementation Method 2
enhancing natamycin's availability and anchoring it to the casing
Data Source
Figure 1~1(B)
Figure 1(C)~1(D)
AI summary
The present invention is related to a food casing with antifungal properties comprising a coating formed by the application in at least its external surface of a water-based composition comprising at least, a film forming agent, a lipid and natamycin. The invention is also directed to the method for production of said food casing as well as to a meat product prepared by stuffing said food casing with meat or a meat emulsion.