Biomimetic Food Storage System

Inspired by the moisture-regulating properties of dromedary camel fur, this project explores a biodegradable multi-layer food container designed to reduce moisture buildup and extend food freshness.

My Contribution

· Design Research · Scientific Research

· Material Testing · 3D Rendering and animation

Duration — 2 months | Year — 2025

Tools Used

Moisture trapped inside containers accelerates food spoilage.

SCALE OF THE PROBLEM

Despite widespread use of airtight containers, moisture-related spoilage remains common.

WHO IS AFFECTED?

Students

Limited space, compact storage needs.

Homemakers

Bulk ingredients, long-term storage demands.

Profesionnals

Pre meal prep routines, freshness retention needs.

Eco-conscious Users

Plastic avoidance, sustainable storage challenges.

Different lifestyles, one common problem — moisture-driven spoilage.

NATURE'S STRATEGY FOR MOISTURE REGULATION

Camels regulate heat and moisture through layered insulation that controls exchange rather than trapping it.

• Dense fur insulation blocks external heat transfer from the hot environment to the skin

• Maintains up to 30 °C temperature gradient between surface and skin

• Minimizes need for evaporative cooling (sweating)

• Conserves water through reduced sweating

Camel hair microstructure enhances insulation at a microscopic scale.

• Three-layer fiber architecture - cuticle, cortex, medulla
• Air-filled core traps heat
• Enables insulation at micro scale

BIOMIMETIC PRODUCT MAPPING

Outer Protective Layer

Shields from external heat and humidity

Moisture-Regulating Layer

Buffers internal moisture exchange

Food-Safe Inner Layer

Maintains hygiene and freshness

Layered, breathable systems regulate moisture more effectively than airtight sealing.

MATERIAL CANDIDATES

Chitosan

• Natural biopolymer derived from chitin

• Naturally breathable

Suitable for moisture regulation

Polylactic Acid (PLA)

• Bio-based thermoplastic derived from renewable sources

Structural stability and Strong moisture barrier

Compostable alternative to plastic

Polyhydroxybutyrate-co-hydroxyvalerate (PHBV)

• Biodegradable polyester produced through microbial fermentation

Good flexibility

Potential composite layer

MATERIAL TESTING

Biopolymer films were fabricated using solution casting and ultrasonic blending in the chemistry lab to evaluate their suitability for moisture-resistant food storage.

Experiments evaluated:

• Film formation and structural stability
• Moisture permeability using WVTR testing
• Material compatibility in composite systems
• Mechanical behavior and flexibility

Films fabricated during material testing

Pure PLA

Pure chitosan

Chitosan + PHBV

Chitosan + PLA

Material testing revealed distinct differences in moisture permeability between the films.

• PLA: strongest moisture barrier (lowest WVTR)
•Chitosan: moderate permeability enabling moisture regulation
•Chitosan + PHBV and Chitosan + PLA : higher permeability due to polymer incompatibility

Rather than blending materials, functional separation through layering proved more effective for moisture regulation.

This insight informed the development of a multi-layer container architecture, where different materials perform specific roles within the system.

Full material testing methodology and analysis available in the research paper.

IDEATIONS

Modern kitchen simplicity — soft geometry, matte finishes, and natural materials creating approachable and practical food storage solutions.

Quick mock ups

Available in varying sizes to accommodate different types of food and storage requirements.

Dual layered moisture resistant container

Chitosan

PLA