The following formula is provided for reference and product development trials only. Actual formulation should be adjusted according to raw materials, processing conditions, and final product requirements.
A Basic LA Gellan Gum Gel Formula
Quick Overview
Low Acyl Gellan Gum (LA) is widely used when a strong and clear gel structure is required.
Compared with High Acyl Gellan Gum, LA generally provides:
✓ stronger gel strength
✓ transparent appearance
✓ firmer texture
✓ better shape retention
Typical applications include:
- jelly products
- gel desserts
- microbiology media
- plant tissue culture
- clear gel systems
The final gel properties depend strongly on:
- LA dosage
- calcium level
- pH
- processing conditions
Basic Reference Formula
For 100 kg Gel System
| Ingredient | Amount |
|---|---|
| Water | 95–99 kg |
| Sugar / solids | 1–10 kg |
| Low Acyl Gellan Gum (LA) | 100–500 g |
| Calcium salt | Adjust according to formula |
| Acid / flavor | As required |
Recommended LA Gellan Gum Dosage
Typical range:
0.10–0.50%
Equivalent to:
100–500 g LA gellan gum per 100 kg system
Suggested starting point:
0.20% LA gellan gum
Why Choose LA Gellan Gum?
LA gellan gum forms a strong three-dimensional gel network.
Main characteristics:
Strong Gel Structure
Suitable when the product requires:
- shape retention
- cutting ability
- firm texture
Transparent Appearance
LA can create clear gels, making it suitable for:
- transparent desserts
- beverage gels
- laboratory applications
Calcium Responsive
LA gellan gum interacts with cations, especially:
- calcium ions
- magnesium ions
These minerals influence:
- gel strength
- setting speed
- brittleness
Suggested Processing Method
Step 1 — Dry Mixing
Premix:
- LA gellan gum
- sugar
Purpose:
- improve dispersion
- prevent lump formation
Step 2 — Hydration
Add the powder mixture into water under agitation.
Recommended temperature:
85–90°C
Allow complete hydration.
Step 3 — Add Calcium System
Add calcium source according to the desired texture.
Common calcium sources:
- calcium lactate
- calcium chloride
Calcium should be carefully controlled.
Step 4 — Cooling and Gel Formation
After cooling:
LA gellan gum develops the final gel structure.
The cooling process affects:
- firmness
- elasticity
- transparency
Recommended Trial Design
Because LA gel properties are highly dosage dependent:
| Trial | LA Gellan Gum |
|---|---|
| A | 0.10% |
| B | 0.20% |
| C | 0.30% |
| D | 0.50% |
Evaluate:
- gel strength
- transparency
- brittleness
- water release
- setting behavior
Common Problems & Solutions
Problem 1: Gel Is Too Brittle
Possible causes:
- excessive LA dosage
- excessive calcium
- low solids content
Solutions:
- reduce LA level
- reduce calcium concentration
- adjust formulation balance
Problem 2: Gel Is Too Weak
Possible causes:
- insufficient LA dosage
- incomplete hydration
- low mineral interaction
Solutions:
- increase LA gradually
- improve heating process
- optimize calcium level
Problem 3: Uneven Gel Formation
Possible causes:
- poor dispersion
- calcium added too early
- incomplete hydration
Solutions:
- improve premixing
- hydrate LA completely before calcium addition
- control addition sequence
Practical Starting Formula
For a first LA gel trial:
100 kg gel system
*
200 g Low Acyl Gellan Gum
*
Controlled calcium addition
*
Hydration at 85–90°C
is a reasonable starting point.
The final formula should be optimized according to:
- desired gel strength
- calcium level
- pH
- application requirements
- processing equipment
This formula is intended for product development trials only. Commercial production should always be validated with actual ingredients and processing conditions.