What is the significance of letter e on food labels for example 450 g or 1.0 L e?

The letter "e" on food labels stands for "estimated" or "environ." It is used to indicate that the quantity of the food item in the package is an approximation and may vary slightly. For example, a package of rice labeled as "450 g e" means that the package contains approximately 450 grams of rice, but the actual weight may be slightly more or less than that.

The letter "e" is often used on food labels when the weight or volume of the item is difficult to measure precisely, such as with fresh produce or irregularly shaped items. It is also used when the weight or volume of the item may vary due to factors such as evaporation or absorption of moisture.

By using the letter "e," food manufacturers are able to provide consumers with an accurate representation of the quantity of food in the package, while also allowing for some variation in weight or volume.