Non-Decellularized Plant Leaf Scaffolds for Oxygenated In Vitro Meat

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Solution Overview

Problem

Current methods for producing in vitro meat struggle to replicate the structure of traditional meats like steaks due to limitations in oxygen diffusion and lack of vascularized 3D cultures, and there is a need for a sustainable method that combines the nutritional value of plants and meat in a single product.

Innovation Solution

A method involving non-decellularized plant leaves is used as scaffolds for culturing muscle cells, where the leaves are prepared and seeded with muscle cells in a cell culture media to grow in vitro meat, allowing for the development of muscle tissue layers and leaf scaffolds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If decellularized plant leaves are used as scaffolds, then cell adhesion and growth are improved, but the process complexity and time increase due to additional decellularization and lyophilization steps

Engineering Contradiction:
Improvecell adhesion and growthVSAvoidprocess complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention extracts and removes the problematic decellularization and lyophilization steps from the traditional process. By demonstrating that non-decellularized, fresh plant leaves provide sufficient structural support and cell adhesion properties, the patent eliminates these complex intermediate processing steps while maintaining effective scaffold functionality for muscle cell culture.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary characterization of fresh plant leaf properties (structural integrity, porosity, surface characteristics) to establish that they inherently possess the necessary features for cell adhesion without requiring subsequent decellularization treatment. This preliminary assessment validates the simplified approach and prevents the need for complex follow-up processing.

Inventive Principle:
Principle #10Preliminary action

2Ease of manufacture

If non-decellularized plant leaves are used as scaffolds, then the process is simplified and nutritional value is maintained, but oxygen diffusion and nutrient delivery to 3D cultures may be limited

Engineering Contradiction:
Improveprocess simplicityVSAvoidoxygen and nutrient delivery
Core Design Contradiction:
Ease of manufactureVSQuantity of substance

Solution Approach 1:

The invention utilizes the natural porous structure of fresh plant leaves, which contains interconnected air spaces and vascular channels that facilitate oxygen and nutrient diffusion throughout the scaffold. This porous architecture allows adequate mass transport to cultured cells without requiring complex vascularization engineering, thereby maintaining process simplicity while ensuring sufficient substance delivery.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The patent employs thin, two-dimensional leaf structures that provide high surface area to volume ratio, enabling efficient oxygen and nutrient exchange across the entire scaffold. This dimensional approach allows adequate substance delivery without the need for complex three-dimensional vascular networks, maintaining ease of manufacture.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Productivity

If traditional livestock cultivation is used, then meat production meets current demand, but land requirements and environmental damage increase

Engineering Contradiction:
Improvemeat productionVSAvoidland requirements
Core Design Contradiction:
ProductivityVSArea of stationary object

Solution Approach 1:

The invention creates in vitro meat by copying and replicating muscle tissue structures and functions in a controlled laboratory setting using plant leaf scaffolds. This artificial replication of meat production eliminates the need for extensive grazing land while maintaining meat production capability, thereby resolving the contradiction between productivity and land requirements.

Inventive Principle:
Principle #26Copying

4Object-affected harmful factors

If tissue engineering techniques are used to create in vitro meat, then animal welfare and environmental impact are improved, but the structure of traditional meats cannot be replicated due to oxygen diffusion limitations

Engineering Contradiction:
Improveanimal welfare and environmental impactVSAvoidmeat structure replication
Core Design Contradiction:
Object-affected harmful factorsVSShape

Solution Approach 1:

The patent utilizes the natural porous architecture of plant leaves to provide adequate oxygen diffusion pathways throughout the tissue structure. This porous structure enables the replication of traditional meat forms and thicknesses while maintaining cell viability, thereby resolving the contradiction between improved animal welfare and the ability to replicate traditional meat structure.

Inventive Principle:
Principle #31Porous materials

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

This approach simplifies the process, maintains nutritional value, and provides a viable alternative to traditional meat by ensuring oxygen and nutrient delivery, promoting animal welfare and environmental preservation.

Implementation Method 1

Due to the limitations of oxygen diffusion, a cell must be within 200 μm of a nutrient source to remain viable.

Methodology Applied
Scientific EffectOxygen diffusion: Diffusion

Implementation Method 2

a cell must be within 200 μm of a nutrient source to remain viable

Methodology Applied
Scientific EffectNutrient diffusion: Diffusion

Data Source

PatentUS12454679B2Non-decellularized plant leaf cultures for meat
Publication Date: 2025.10.28 WORCESTER POLYTECHNIC INSTITUTE
  • US12454679B2 patent drawing
  • US12454679B2 patent drawing
  • US12454679B2 patent drawing

AI summary

An in vitro meat having non-decellularized leaf scaffold and a method for producing an in vitro meat using non-decellularized leaf scaffold are described herein. The method includes preparing a non-decellularized plant leaf and incubating the leaf in a cell culture media to obtain a non-decellularized leaf scaffold; seeding the leaf scaffold with a population of muscle cells to obtain a leaf scaffold adhered population of muscle cells; and growing the leaf scaffold adhered population of muscle cells in cell culture media thereby obtaining the in vitro meat.