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 Gellan Gum Formula with Calcium Lactate
Quick Overview
Low Acyl Gellan Gum (LA) is an ion-sensitive hydrocolloid.
The presence of calcium ions can significantly influence:
✓ gel strength
✓ setting behavior
✓ texture
✓ water retention
Calcium lactate is often considered as a calcium source because it provides calcium ions with good food application compatibility.
However, too much calcium may cause:
- excessive firmness
- brittle texture
- uneven gel formation
Therefore, calcium level should be optimized together with gellan gum dosage.
Basic Reference Formula
For 100 kg Gel System
| Ingredient | Amount |
|---|---|
| Water | Balance to 100 kg |
| Sugar / solids | 5–15 kg |
| Low Acyl Gellan Gum (LA) | 200–500 g |
| Calcium Lactate | 10–50 g |
| Acid / flavor | As required |
Recommended Starting Ratio
A practical starting trial:
LA Gellan Gum: 0.20–0.30%
*
Calcium Lactate: 0.01–0.05%
Example:
For 100 kg system:
- LA gellan gum: 200 g
- Calcium lactate: 20 g
Why Add Calcium Lactate?
LA gellan gum forms a gel network through interactions with cations.
Calcium ions can help:
Increase Gel Strength
Higher calcium availability may create:
- stronger gel structure
- faster setting
Control Texture
By adjusting calcium level, manufacturers can modify:
- firmness
- elasticity
- brittleness
Improve Structure Stability
A properly balanced calcium system may improve:
- shape retention
- storage stability
- water control
Suggested Processing Method
Step 1 — Premix Dry Ingredients
Mix:
- LA gellan gum
- sugar
before hydration.
This improves dispersion.
Step 2 — Hydrate Gellan Gum
Add into water under agitation.
Recommended conditions:
Temperature:
85–90°C
Ensure complete hydration before calcium addition.
Step 3 — Add Calcium Lactate
Add calcium lactate after gellan gum has hydrated.
This allows better control of gel formation.
Step 4 — Cooling and Setting
Cool the system.
Gel structure develops gradually during cooling.
Recommended Trial Design
Calcium optimization is usually required.
Example:
| Trial | LA Gellan Gum | Calcium Lactate |
|---|---|---|
| A | 0.20% | 0.01% |
| B | 0.20% | 0.02% |
| C | 0.20% | 0.03% |
| D | 0.30% | 0.03% |
Evaluate:
- gel strength
- brittleness
- transparency
- water release
Common Problems & Solutions
Problem 1: Gel Becomes Too Hard
Possible causes:
- excessive calcium
- excessive LA dosage
Solutions:
Reduce:
- calcium lactate level
- gellan gum concentration
Problem 2: Gel Does Not Set Properly
Possible causes:
- insufficient calcium
- incomplete hydration
- unsuitable pH
Solutions:
Check:
- heating process
- calcium level
- formulation balance
Problem 3: Different Water Sources Give Different Results
This is common.
Water may contain different levels of:
- calcium
- magnesium
- other minerals
These can affect LA gellan gum performance.
Practical Starting Formula
For a first calcium lactate trial:
100 kg gel system
*
200 g Low Acyl Gellan Gum
*
20 g Calcium Lactate
*
Hydration at 85–90°C
is a reasonable starting point.
The final formula should be optimized according to:
- desired gel texture
- calcium concentration
- pH
- application requirements
- processing conditions
This formula is intended for product development trials only. Commercial production should always be validated with actual ingredients and processing conditions.