Plain-English sales guidance for explaining how chitosan coatings work on produce surfaces clearly, confidently, and compliantly.
Compliance note: This guide supports quality-maintenance, spoilage-management, and non-public-health positioning. Keep claims focused on freshness, surface protection, moisture management, shelf-life support, and control of spoilage organisms or non-public-health fungi. Do not position the product as a disinfectant, sanitizer, sterilant, or public-health protection tool.
1. Quick Elevator Pitch
15-Second Version
Chitosan forms a thin, breathable coating on produce that helps reduce moisture loss, supports freshness, and creates a less favorable surface environment for spoilage organisms.
30-Second Version
When applied as a spray, dip, or wash, chitosan anchors to the produce surface and dries into a natural, semi-permeable film. That breathable barrier helps slow moisture loss, moderate surface exchange, and manage spoilage pressure without sealing the fruit like plastic.
60-Second Version
Chitosan is a naturally derived biopolymer that becomes positively charged in mild acidic solution. Because produce surfaces carry negatively charged groups, chitosan can anchor to the surface through electrostatic attraction. As the water evaporates, it self-assembles into a thin, continuous, breathable film. That film is semi-permeable, so it helps reduce moisture loss and moderate gas exchange while maintaining a more stable surface environment. At the same time, it creates conditions that are less favorable for spoilage organisms by limiting surface moisture, restricting access to nutrients, and interfering with microbial attachment. The result is a practical quality-maintenance coating that supports freshness, visual quality, and shelf-life extension.
2. How It Works
Use the explanation below when customers ask, “What is it actually doing on the produce?”
1. Chitosan becomes positively charged in mild acid.
In use solutions prepared under mild acidic conditions, chitosan’s amino groups become protonated. In plain English: the molecule carries a positive charge.
2. Produce surfaces carry negatively charged groups.
Fruit and vegetable surfaces contain naturally occurring groups such as carboxyl and hydroxyl groups. These create sites that can interact with positively charged chitosan.
3. Opposite charges help chitosan anchor to the surface.
Because opposite charges attract, chitosan can adhere closely to the produce surface. This anchoring effect is the foundation of the coating’s barrier performance.
4. As water evaporates, chitosan forms a thin, continuous film.
After application by spray, dip, or wash, the water phase evaporates and chitosan self-assembles into a uniform, flexible, adherent film on the surface.
5. The film is breathable, not a plastic seal.
The coating is semi-permeable, meaning it allows some oxygen, carbon dioxide, and water vapor to move through, but at a reduced rate. It does not wrap or suffocate produce.
6. The surface environment becomes more stable and less favorable to spoilage.
By helping reduce moisture loss and moderate gas exchange, the coating supports a more stable surface microenvironment. It also helps manage spoilage pressure by reducing surface moisture availability, restricting access to nutrients, physically separating microbes from the surface, and interfering with attachment of negatively charged spoilage organisms.
Simple way to say it in a meeting:
“Chitosan attaches to the produce surface and dries into a thin, breathable barrier that helps retain quality and makes the surface less favorable for spoilage organisms.”
3. Key Benefits for Customers
Quality Maintenance
- Helps maintain freshness and visual quality
- Helps reduce moisture loss and surface dehydration
- Supports a more stable surface microenvironment
- Provides a natural, breathable protective barrier
- Helps moderate respiration-related surface effects
- Supports extended shelf life when used appropriately
Operational Value
- Can be applied as a spray, dip, or wash
- Forms a thin, adherent coating rather than a heavy layer
- Helps manage spoilage pressure on the produce surface
- Supports quality retention during storage, packing, and distribution
- May help reduce losses tied to dehydration and visual deterioration
Market Positioning
- Natural-looking quality-maintenance story
- Breathable barrier concept is easy for customers to understand
- Strong fit for freshness, appearance, and shelf-life conversations
- Useful positioning for customers seeking alternatives to heavier surface treatments
- Supports discussions around non-public-health spoilage management
4. Safe and Appropriate Claim Language
The phrases below are generally safer because they focus on quality, spoilage, and economic or aesthetic effects rather than human health.
| Preferred language | Why it works |
| Helps maintain freshness | Frames the benefit as quality maintenance rather than a health or sanitation outcome. |
| Forms a natural, breathable barrier | Accurately describes the coating’s physical function without implying a sealed or sterile surface. |
| Helps reduce moisture loss | Focuses on a clear quality attribute tied to the coating’s semi-permeable barrier. |
| Supports shelf-life extension | Conservative phrasing that avoids promising a guaranteed preservation result. |
| Helps inhibit the growth of spoilage organisms | Keeps the discussion centered on spoilage, not human-pathogenic organisms. |
| Controls non-public-health fungi | Specifically limits the claim to allowed non-public-health fungal positioning. |
| Reduces microbial load on the surface | Appropriate when used carefully in a spoilage-management context and not linked to disease prevention. |
| Helps create a less favorable surface environment for spoilage organisms | Describes the mechanism conservatively without making aggressive kill or eradication claims. |
| Helps manage spoilage pressure | Useful, practical phrasing for operational discussions about product quality loss. |
| Supports visual quality during storage and distribution | Anchors the value proposition in appearance and marketability. |
Reminder: Keep claims focused on quality retention, spoilage management, and economic or aesthetic effects. Do not link product claims to human disease prevention, public-health protection, or food-safety disinfection.
5. Phrases to Avoid
Warning for sales conversations: Do not describe the product as a disinfectant, sanitizer, sterilant, germ-killer, disease-prevention tool, or food-safety intervention. Avoid any wording that suggests public-health protection or elimination of human pathogens.
- Avoid public-health terms such as disinfects, sanitizes, sterilizes, or kills germs.
- Avoid food-safety outcome claims such as prevents contamination, pathogen-free, or protects consumers from disease.
- Avoid overly absolute language such as eliminates mold, completely stops spoilage, or guarantees shelf life.
- Avoid implying medical or regulatory functions the product is not positioned to support.
| Avoid | Use instead |
| Disinfects produce surfaces | Forms a breathable protective barrier on the produce surface |
| Sanitizes fruit | Helps create a less favorable surface environment for spoilage organisms |
| Sterilizes the surface | Helps manage spoilage pressure on the surface |
| Kills germs | Helps inhibit the growth of spoilage organisms |
| Prevents disease | Supports freshness and visual quality |
| Provides food safety protection | Supports quality maintenance during storage and distribution |
| Public health protection | Non-public-health spoilage management |
| Pathogen-free | Helps reduce microbial load on the surface in a spoilage context |
| Anti-viral / antiviral | Not appropriate—do not substitute unless specifically approved on label |
| Antibacterial for human health | Helps manage spoilage organisms of economic or aesthetic significance |
| Mold remediation | Controls non-public-health fungi |
| Eliminates contamination | Supports cleaner-looking, better-maintained produce surfaces |
6. Objection Handling
Use short, practical answers. Stay calm, clear, and conservative.
| Common objection | Suggested response |
| Is it sealing the fruit like plastic? | No. The coating is breathable and semi-permeable. It helps moderate exchange at the surface, but it does not create a plastic-like seal. |
| Are you claiming it kills pathogens? | No. Our positioning is about quality maintenance and spoilage management on the produce surface, not public-health pathogen control. |
| How does something so thin make a difference? | Because it anchors closely to the surface and forms a continuous film, even a thin layer can influence moisture movement and the local surface environment. |
| Will it affect breathing or ripening? | It is designed to be breathable, not blocking. The goal is to moderate exchange, not stop it, so the produce can continue normal physiological activity more gradually. |
| Why does it stay on the surface? | Chitosan becomes positively charged in mild acid, and produce surfaces have negatively charged groups. That charge difference helps the coating anchor to the surface. |
| Is this a residue or a synthetic film? | It is a thin chitosan-based coating that forms on the surface after application. We describe it as a natural, breathable barrier rather than a synthetic plastic film. |
| What makes it different from wax? | It is positioned as a chitosan-based semi-permeable barrier that adheres through surface interactions and helps create a less favorable environment for spoilage organisms. It is not simply a shine layer. |
| Does this guarantee shelf-life extension? | No product should be sold that way. The right language is that it supports shelf-life extension and helps maintain freshness when used under appropriate conditions. |
7. Concise FAQ
Q1. What is chitosan doing on the produce surface?
It attaches to the surface and forms a thin, breathable film that helps reduce moisture loss and support freshness.
Q2. Why does it adhere well?
Chitosan adheres well because it becomes positively charged in mildly acidic conditions, while produce surfaces naturally contain negatively charged groups. That charge difference helps the coating attract to and anchor on the surface, supporting a thin, continuous film.
Q3. Is the coating visible?
It is typically a thin, continuous surface layer rather than a heavy visible shell.
Q4. Does it stop all gas exchange?
No. It is semi-permeable; it can slow transpiration up to 20% but does not block it.
Q5. What customer benefit should I lead with?
Lead with freshness support, moisture-loss reduction, visual quality, and spoilage-pressure management.
Q6. Can I say it controls fungi?
Use careful language such as “controls non-public-health fungi” if aligned with the product label and approved claims.
Q7. Can I say it kills bacteria?
Avoid that phrasing unless expressly supported and approved. Safer language is “helps inhibit the growth of spoilage organisms” or “reduces microbial load on the surface” in a non-public-health context.
Q8. What is the safest one-sentence summary?
“It forms a breathable protective barrier that helps maintain freshness and creates a less favorable surface environment for spoilage organisms.”
8. Final Sales Checklist
What to Say
- Helps maintain freshness and visual quality
- Forms a natural, breathable protective barrier
- Helps reduce moisture loss
- Supports shelf-life extension
- Helps inhibit the growth of spoilage organisms
- Controls non-public-health fungi
- Helps create a less favorable surface environment for spoilage organisms
What Not to Say
- Disinfects, sanitizes, sterilizes, or kills germs
- Prevents disease or protects public health
- Makes produce pathogen-free
- Guarantees shelf life
- Eliminates contamination
- Mold remediation or antiviral protection
How to Position It in Meetings
- Lead with quality maintenance, not health claims
- Explain the breathable barrier in simple terms
- Connect the mechanism to visible business outcomes: freshness, appearance, shrink reduction, and shelf-life support
- Use careful, non-absolute language such as “helps,” “supports,” and “creates a less favorable environment”
- Stay aligned with approved labeling, legal review, and state-specific requirements
Chitosan FG®
A breathable surface treatment for fruit, vegetables and flowers.
Prepared for produce category & merchandising teams.
01 · The buyer opportunity
Produce loses value between pack-out and the shelf edge.
Moisture loss, surface dulling and uneven appearance during handling, transit and store-level rotation all erode what buyers and shoppers see at the shelf. Today’s options are typically heavier processing chemistries or label-driven fungicide programs.
Buyers are asking for a gentler, cleaner-label quality-support option that fits inside an existing pack line.
What buyers tell us
Three pressures on the produce P&L
01
Visual quality slipping between pack and shelf.
02
Pressure for cleaner-label, surface-based options.
03
Limited pack-line minutes to add a new step.
02 · Origin story
From the mushroom to the shelf.
A plant-derived structural sugar — sourced from the white button mushroom (Agaricus bisporus) and refined for surface application on fruit, vegetables and flowers.
In plain English
Chitin is one of nature’s most common structural sugars.
- Chitin is a naturally occurring structural sugar the same family of materials that gives fungal cell walls their structure.
- The chitosan in Chitosan FG® is sourced from the white button mushroom (Agaricus bisporus) a plant-based, non-crustacean source, refined for surface application on fruit, vegetables and flowers.
- Unlike most sugar-derived materials, chitosan carries a positive electrical charge.
- That charge lets it interact with produce surfaces and support formation of a thin, breathable surface film.
Buyer note
Framed as surface interaction and quality support — not as a kill, sanitizer or processing-aid claim.
03 · User case study · Cut-flower bouquet
One bouquet. One misting. Ten days of saleable look.
Bouquet purchased Jan 8, 2024, misted once with 0.25% chitosan oligosaccharide from oyster mushrooms (DDA 98%, MW ~3 kDa, ζ +36 mV). Still in good shape on Jan 18 — a single-sample anecdote, not a controlled trial.
JAN 8, 2024
Day 0 • misted
JAN 8, 2024
Day 0
JAN 8, 2024
Day 0
JAN 13, 2024
Day 5
JAN 18, 2024
Day 10
JAN 18, 2024
Day 10
| Formulation | Deacetylation | Molecular weight | Zeta potential |
|---|---|---|---|
| 0.25% mist · single application chitosan oligosaccharide · oyster mushroom source |
DDA 98% | ~3 kDa | ζ +36 mV |
Single-sample anecdote not a controlled trial. Not a Chitosan FG® performance claim.
04 · How Chitosan FG® works
A positive charge that anchors. A thin film that breathes.
01 Activate
Charged in mild acid
In a mildly acidic carrier, chitosan becomes positively charged and ready to interact with surfaces.
02 Anchor
Electrostatic attraction
Positive charge anchors to negatively charged produce surfaces, creating a uniform coating layer.
03 Self-assemble
A breathable film forms
As water evaporates, the layer self-assembles into a thin, continuous, semi-permeable film.
04 Support
Moisture & gas balance
The film helps moderate moisture and gas exchange supporting freshness, visual quality and surface uniformity.
Mode of action
Purely physical. A surface barrier.
When applied, Chitosan FG® forms a semi-permeable chitosan film on the surface of food and flowers. Its mode of action is purely physical — it provides a natural surface barrier without functioning as a chemical preservative.
05 · Technical credibility
Why the chemistry holds up under real packing conditions.
Surface charge
+60 mV
A strongly positive surface charge supports robust electrostatic interaction with negatively charged produce surfaces.
pH window
2–12
Maintains cationic behavior across an unusually wide pH window — resilient to typical pack-line and rinse water variability.
Chemistry
COS-Lactate
chitosan oligosaccharide lactate
A chitosan oligosaccharide lactate selected for solubility, surface activity and gentle handling on the surface of fruit, vegetables and flowers.
These properties are why Chitosan FG® can form a coherent surface coating across diverse produce types and pack-line water chemistries.
06 · Pre-packing application proposal
Spray before pack-out. Coat. Pack. Ship.
1. Lay out produce
Produce is presented on the existing pack line, before packaging, in standard handling conditions.
2. Even Chitosan FG® spray
An even, light spray is applied to the produce surface using standard spray hardware.
3. Film forms & pack
As surface moisture evaporates, the breathable film self-assembles; produce is then packed normally.
4. Ship to store
Packed product is shipped to supermarkets following standard cold chain and handling procedures.
For discussion
An operational proposal — not a validated process.
Fit must be evaluated within each packer’s existing line setup and standard handling procedures. We bring the chemistry; the packer brings the process.
07 · How Chitosan FG® sits next to existing options
A claims-safe comparison — where each option lives in the produce conversation.
| DIMENSION | Chitosan FG. Chitosan Global |
Chlorites / ClO₂-generating processing chemistries |
Conventional post-harvest fungicides label-driven crop protection |
|---|---|---|---|
| Positioning | Cationic surface treatment for fruit, vegetables and flowers; supports produce quality. | Typically positioned as antimicrobial processing chemistries in specific permitted applications. | Typically positioned as crop-protection / disease-control chemistries under pesticide labels. |
| Commercial story | Forms a natural, breathable surface film supporting freshness, visual quality, moisture management & surface uniformity. | Often used where antimicrobial treatment steps are part of processing programs. | Often used where disease-management programs are part of post-harvest handling. |
| Mode of action story | COS-Lactate with strong + charge → electrostatic interaction → semi-permeable coating. | Discussed in antimicrobial-treatment terms; not a breathable coating story. | Discussed in disease-control terms; not a breathable coating story. |
| Surface interaction | Anchors to produce surfaces through cationic interaction; supports a uniform coating layer. | Used as a treatment step in wash, dip, spray or processing water systems, depending on product/use. | Applied per fungicide label directions for post-harvest disease management. |
| Breathable film story | Yes — core positioning. | Not typically the core commercial story. | Not typically the core commercial story. |
| Claims style | Physical, quality-supporting, claims-safe language. | Product-specific antimicrobial / sanitizing language may apply, depending on product & permitted use. | Product-specific fungicidal / disease-control language may apply, depending on product label. |
| Pre-packing spray fit | Strong fit — supports coating formation before pack-out & shipment. | Use conditions are product-specific; may include rinse or other processing requirements. | Use conditions are label-specific and tied to crop/disease/application instructions. |
| Buyer-friendly framing | Gentle surface treatment, clean-label-oriented, for fruit, vegetables and flowers. | More processing-chemistry-centered conversation. | More crop-protection / disease-management-centered conversation. |
08 · Claims-safe positioning
What we do not claim.
Chitosan FG® is positioned only on the surface-quality and physical-coating story. We are deliberately conservative about regulated claim categories.
Not claimed
Does not claim to kill bacteria.
No kill, log-reduction or sanitizer language is used in any Chitosan FG® materials.
Not claimed
Does not claim to prevent spoilage.
We talk about surface integrity and visual quality — not the prevention of spoilage as an outcome.
Not claimed
Does not claim a specific shelf-life extension.
No “+X days” promises. Performance must be evaluated in each packer’s real conditions.
Not claimed
Not a sanitizer or disinfectant.
Chitosan FG® is not registered or positioned as a sanitizer, disinfectant or antimicrobial pesticide.
Not claimed
Does not replace refrigeration.
Cold-chain and standard produce handling remain essential. Chitosan FG® complements them.
Not claimed
Does not claim to prevent foodborne illness.
Food-safety outcomes remain the responsibility of established sanitation and handling programs.
What we do say → forms a breathable surface film · maintains freshness & visual quality · reduces moisture loss · supports surface uniformity.
09 · Documentation & due diligence
Documentation, ready for buyer review.
COA · Lot quality
Certificate of Analysis
Lot-level COA available for each Chitosan FG® batch.
SDS · Safety data
MSDS / SDS
Current safety data sheet for category, packer & food-safety review.
DOWNLOAD MSDS →
Source of truth
All documentation is issued directly by Chitosan Global.
Lot-level COA and current MSDS are linked directly above. Full product details at chitosanglobal.com/wholesale — or via the buyer contact on the next slide.
✓ For surface application
✓ Lot traceability
✓ Pack-line handling guidance
✓ Buyer Q&A on request