NURALIA SYAFIQAH NAZRI by NURALIA SYAFIQAH NAZRI

NURALIA SYAFIQAH NAZRI by NURALIA SYAFIQAH NAZRI https://padlet.com/2020810202/onv2ie5ocgj5oy0q en-us 2022-10-20 01:29:41 UTC 2023-01-22 16:56:25 UTC hello@padlet.com https://padlet.net/icons/png/1f349.png About Me 2020810202 https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2348132165 Hi, my name is Nuralia Syafiqah Binti Nazri. You can call me Alia. I grew up in a small town in Johor - Muar. My hobby is playing frisbee.]]> 2022-10-20 01:44:04 UTC https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2348132165 Activity: Topic 2 2020810202 https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2366910969 1. Opinion on the use of chemical preservatives in food products.

^{the usage of chemical preservatives in food products is depends on the food type.}
^{extend storage life without physical changes.}
^{equipment must be clean properly to avoid changes in chemical reliability or efficiency.}

2. recommendation of the best chemical preservation method to be used.

^Salt

^{Advantages: Low cost, not hazardous & harmless (safety), reduce moisture content in food by osmosis
Uses: To preserve meat such as bacon & fish, to preserve pickles.}

]]> 2022-11-02 15:40:38 UTC https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2366910969 Activity 3: Preservation by Thermal Processing 2020810202 https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2386759066 1. Why do preservation by the use of heat is common in industry?

^{To reduce surface microbial contamination. As the temperature rises by heating, the bacteria/contaminants will be distinguished.}
^{soften vegetable tissues to facilitate filling into containers.}
^{Enzyme inactivation, destruction of spoilage microorganisms & kills pathogens (M. N. Ramesh, 1999)}

2. You were shopping for food and groceries in the mall. What type of preserved food would you choose, and why?

^{Metal containers such as aluminum tins, because it is easy recyclability & long shelf-life of food (time consuming to expire).}

]]> 2022-11-16 15:10:02 UTC https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2386759066 ENGINEERING CARNIVAL 2022 2020810202 https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2386773018 Experience in Engineering Carnival 2022

^{Gain more knowledge on the inventions & innovations from general waste or food waste.}
^{Get to know the chemical engineering clubs of UiTM Shah Alam.}
^{Enjoy many delicious food at the stalls}

]]> 2022-11-16 15:17:40 UTC https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2386773018 Activity Week 11 2020810202 https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2436828417 Preservation by fermentation
1. The differences between pickling vs fermentation

^{Pickling method results in long-term shelf stable while fermentation is not long-term shelf stable at room temperature.}
^{Pickling process is by adding salt/vinegar to vegetables while fermentation is by adding brine to vegetables (Nirmal, 2010).}
^{Pickling is a fast process while fermentation is a time consuming process (took 3-10 days).}

2. Fermented food that you've tried and which one do you prefer?

^{I've tried is tempeh while pickled food that I've tried is 'pickled chilly', from both, I prefer fermentation as it has high nutritional values as it is a clean process and encourage good bacterias.}

]]> 2023-01-08 15:25:53 UTC https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2436828417 Activity Week 12 2020810202 https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2452417478 Food Irradiation: Is it Safe?

Definition
^{Food irradiation is a food safety method in which radiation is used to eliminate microorganisms that might cause food poisoning (foodborne illness).}

Example

^{Pasteurizing milk}
^{Canning food & vegetables}

How it helps preserve food?
^{Ionizing radiation (x-ray or gamma ray) delivers enough energy to the bacterial or mould cells in the food to cause chemical bonds to breakdown. This causes the microbes to die or stop reproducing, resulting in less disease or spoiling.}

Opinion
^{In my opinion, irradiation food is not that harm as it does not affect most food, however at a certain high ionizing dose, it may affects on the chemical properties of food instead of nutrients (Hossein, 2012). Hence, it is safe to be consumed. Besides, this preservation benefits on killing pathogen which will affect on the food shelf-live.

References:
Hossein Ahari Mostafavi, Seyed Mahyar Mirmajlessi, Hadi Fathollahi (2012) The Potential of Food Irradiation: Benefits and Limitations
https://www.researchgate.net/publication/224829992_The_Potential_of_Food_Irradiation_Benefits_and_Limitations}

]]> 2023-01-22 16:53:12 UTC https://padlet.com/2020810202/onv2ie5ocgj5oy0q/wish/2452417478