Hi Jayce Tan, 

Food Science is the study of the physical, biological and chemical make up of food. This is considered to be the science behind food processing. You will be venturing on how food is made but that is not all, this sector is very huge and it can branch out to Food Technology and Food Engineering. 

Food Technology is the development of new food and quality improvement of existing food. This sub-sector will include food processing, packaging, storage and etc. Food technologist are largely working on food preservation. 

Food Engineering is health control and safety of food production by designing and operating food processing plants. Food Engineers also involve themselves in waste management and the genetic modification of foods. They generally work for food manufacturing companies, but they can also work in the pharmaceutical and health care industries. 

These 3 sectors are very inter-related, if you were to take any of these 3 courses, you will still be employed by a similar sector.  Do not worry about the specification of the course as these course are very related to the research and development of the food industry. 

Kindly refer to this site for more info. https://afterschool.my/food-science

 Hope this clarifies your query. :)