WEEK 8

ASSALAMUALAIKUM AND SALAM SEJAHTERA .

so this is week 8 .it is very fast and omg mid term tinggal berapa minggu je lagi ni ..semoge everything gonna be alright .so dr.fareeed did not coming to class this week because already informed that he got bad injured on his legs like terseliuh heheh.i hope he will be recovered soon .hehe...!!!so he left to us scl task which is food preservations technique .this task required us to form a group and elaborate about one of the technique that required to be present on 2 november.my group choosed food irradiation.so we discuss among the members about food radiation .so you know what is it??

food irradiation is process of exposing food to ionizing radiation.we will use use xray gamma ray and electron beam radiation .to destroy the microorganisms in the foods .One of the most important advantages of food irradiation processing is that it is a cold process which does not significantly alter physico-chemical characters of the treated product,It can kill many insects and pests that infest foods like grains, herbs and spices without appearing to affect them. It can kill or substantially reduce the level of dangerous micro organisms in foods such as salmonella, listeria and campylobacter. It can delay or stop normal ripening and decay processes so that foods can be stored for longer. It can completely sterilise a food making it fit to eat for vulnerable patients in hospitals.It can only be used on a very limited range of foods. It is still a relatively expensive technology. It affects some important constituents of foods, for example, vitamin E levels can be reduced by 25% after irradiation and vitamin C by 5-10%. Although ordinary cooking will also produce vitamin losses but consumers are more aware of this effect and are likely to sompensate elsewhere intheir diet. Radiation doses at the levels recommended will not kill all micro organisms. Typically 90% may be destroyed and this means that the food still has be treated with care otherwise the remaining organisms will reproduce rapidly. It is ineffective against viruses. It can create new substances called radiolytic products. While this does not mean that the food is radioactive, there is considerable controversy over whether these products are unique and if so whether they are dangerous.