Plusma: modular dielectric barrier discharge (dbd) cold plasma sterilization device for inactivating escherichia coli on tomatoes and strawberries/ Ariel Jr. M. Anda, Jea B. Gorpio, John Albert L. Mariano, John Rhey T. Ugates, Rose Angeline L. Venturero, and Rigel R. Villaroman.--

By:

Anda, Ariel Jr. M [author]

Contributor(s):

Material type: Text

TextPublication details: Manila: Technological University of the Philippines, 2025.Description: ii, 133pages: 29cmContent type:

Media type:

Carrier type:

Subject(s):

LOC classification:

BTH TK 146 A53 2025

Dissertation note: College Of Engineering.-- Bachelor of science in electronics engineering: Technological University of the Philippines, 2025. Summary: Contaminated food causes health problems. E. coli in food points to a need for better ways to sterilize. A study describes the PlusMA Cold Plasma Sterilization Device. This device uses a pulsed, high voltage plasma at 60 kilovolts DC and 50 kilohertz - it cleans E. coli from tomatoes and strawberries. Researchers bought the fruit at public markets. The device uses a Dielectric Barrier Discharge setup. Gold-plated copper electrodes are in the device. An FR4 barrier separates the electrodes. The device creates reactive particles in the air - these particles inactivate microbes without heat or chemicals. The test results showed a large drop in Colony Forming Units. Tomatoes decreased from 4,600 to 2,600 CFU per gram in four minutes. Strawberries went from 260,000 to 57,000 CFU per gram in seven minutes. Statistical analyses, including t-tests (p < 0.001) and ANOVA (F = 11.898, p = 0.008), confirmed the treatment’s effectiveness. Log-linear regression indicated a D-value of approximately 11 minutes, demonstrating a time-dependent reduction in microbial load. These findings show that cold plasma treatment effectively reduces contamination without heat or chemicals, offering a promising method for preserving the safety, physical integrity, and nutritional quality of fresh produce.

Tags from this library: No tags from this library for this title. Log in to add tags.

Average rating: 0.0 (0 votes)

Holdings
Item type	Current library	Shelving location	Call number	Copy number	Status	Date due	Barcode
Bachelor's Thesis COE	TUP Manila Library	Thesis Section-2nd floor	BTH TK 146 A53 2025 (Browse shelf(Opens below))	c.1	Not for loan		BTH0006702

Bachelor's thesis

College Of Engineering.-- Bachelor of science in electronics engineering: Technological University of the Philippines,
2025.

Includes bibliographic references and index.

Contaminated food causes health problems. E. coli in food points to a need for
better ways to sterilize. A study describes the PlusMA Cold Plasma Sterilization Device.
This device uses a pulsed, high voltage plasma at 60 kilovolts DC and 50 kilohertz - it
cleans E. coli from tomatoes and strawberries. Researchers bought the fruit at public
markets. The device uses a Dielectric Barrier Discharge setup. Gold-plated copper
electrodes are in the device. An FR4 barrier separates the electrodes. The device creates
reactive particles in the air - these particles inactivate microbes without heat or chemicals.
The test results showed a large drop in Colony Forming Units. Tomatoes decreased from
4,600 to 2,600 CFU per gram in four minutes. Strawberries went from 260,000 to 57,000
CFU per gram in seven minutes.
Statistical analyses, including t-tests (p < 0.001) and ANOVA (F = 11.898, p =
0.008), confirmed the treatment’s effectiveness. Log-linear regression indicated a D-value
of approximately 11 minutes, demonstrating a time-dependent reduction in microbial load.
These findings show that cold plasma treatment effectively reduces contamination without
heat or chemicals, offering a promising method for preserving the safety, physical integrity,
and nutritional quality of fresh produce.

There are no comments on this title.

to post a comment.

Click on an image to view it in the image viewer