(For USM Staff/Student Only)

EngLib USM > Ω School of Electrical & Electronic Engineering >

Microwave sterilizer

Microwave sterilizer / Ho Kuen Seng
Kajian ke atas kesan penyinaran gelombang mikro pada kesan biologi dan sifat kimia telah banyak dijalankan selama ini. Keberkesanan pensterilan gelombang mikro adalah salah satu kajian yang telah berlangsung selama bertahun-tahun. Walau bagaimanapun, kebanyakan kajian dan penyelidikan melibatkan penggunaan ketuhar gelombang mikro konvensyen yang tidak mesra untuk pengajian. Projek ini melibatkan pembangunan pensteril gelombang mikro dan antara muka komputer pengguna grafik (GUI). Sebuah ketuhar gelombang mikro konvensyen telah diubah suai dengan Arduino Uno sebagai pengawal untuk mencapai tetapan tempoh rawatan yang fleksibel dan pemantauan suhu. Penderia thermopile inframerah disepadukan kepada sistem tersebut untuk memantau suhu sampel dalam kebuk gemlombang mikro. Projek ini juga mengkaji keberkesanan pensterilan gelombang mikro pada air nira nipah dengan menggunakan sistem pensterilan gelombang mikro yang dibangunkan. Teknik “spread plate” digunakan untuk mengira unit pembentukan koloni (CFU) dan membandingkan keputusan untuk mengesahkan keberkesanan. Sistem pensteril gelombang mikro dibangunkan mempunyai GUI yang mesra pengguna untuk mengawal tempoh rawatan dan pemantauan suhu. Sistem ini mampu menjana profil haba untuk sampel dan ambang suhu boleh ditetapkan untuk rawatan. Kajian telah menunjukkan bahawa gelombang mikro adalah berkesan dalam pensterilan air nira. Sistem pensteril gelombang mikro dibangunkan terbukti membantu sepanjang kajian tersebut. _______________________________________________________________________________________________________ The studies of the effect of microwave irradiation on biological effects and chemi-cals properties have been widely conducted over the years. The viability of microwave ster-ilization is one of the study that has been going on for years. However, most of the studies and researches involve the use of a conventional microwave oven which do not provide ap-propriate features to aid them in their studies. Development of a microwave sterilizer sys-tem with a computer graphical user interface (GUI) are involved in this project. A conven-tional microwave oven is modified with Arduino Uno as the controller to achieve flexible treatment duration settings and temperature monitoring. An infrared (IR) thermopile sensor is integrated to the system to monitor the temperature of the sample within the microwave chamber. The effectiveness of microwave sterilization on nipa palm sap is studied in this project as well using the developed microwave sterilization system. Spread plate technique is used to calculate the colony forming unit (CFU) and the results are compared to verify the effectiveness of microwave sterilization. The microwave sterilizer system developed has a user-friendly GUI to control the treatment duration and temperature monitoring. The system is capable of generating a thermal profile for the treated sample and threshold tem-perature can be set for the treatment. The experiment has shown that microwave radiation is effective and viable in the sterilization of sap of Nypa Fruticans. The microwave steriliza-tion system developed is proved to be helpful throughout the experiment.
Contributor(s):
Ho Kuen Seng - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007158
Barcode : 00003107036
Language:
English
Subject Keywords:
microwave irradiation; biological effects; (IR) thermopile
First presented to the public:
6/1/2017
Original Publication Date:
4/19/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 78
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-19 16:53:17.32
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

All Versions

Thumbnail Name Version Created Date
Microwave sterilizer1 2018-04-19 16:53:17.32