Waste Management / Pengendalian Bahan Buangan

Waste Materials 1. Waste is any material that is no longer useful. 2. In their daily activities, people dispose many types of waste, includi...

The Importance of Preserving Food

1. Food preservation gives many benefits to us. a) The food will last longer i) With preservation processes, perishable products such as fru...

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Salting

1. Food can also be preserved with salt. This process is called salting. 2. Salting can be done in two ways as shown below. a) Adding a lot ...

Pasteurising

1. Pasteurising is a process in which milk is heated at 63 ° C for 30 minutes or heated at 72 ° C fo 15 seconds and followed by rapid cooli...

Canning/Bottling

1. Some foods can be canned and bottled. The canning and bottling of food allows the food to be kept for a very long time. 2. These methods ...

Pickling

1. Food can be preserved by soaking it in an acidic solution (vinegar) or saturated sugar solution. This process is known as pickling. 2. Ba...