**Drawbacks**

Even though biocolours have several applications, but they also got certain limitations like sensitivity to low pH and heat sensitive, etc.

### **Lack of eyesight:**

Food gives a great palatability only if it is consumed natural. But the natural colours are not that much attractive as compared to synthetic colours.

#### **Lack of wide applications:**

These are product specific in nature. Beet colour is only used in soda as it turns blue in milk. This also not suitable in the baking industry.

#### **Lack of colour stability and fading:**

These colours change its nature sometimes and are failed to maintain their originality.


#### **Table 2.**

*List of Bio-colours approved by FDA.*


#### **Table 3.**

*Companies dealing with bio-colours.*
