Cornell University
Library
Cornell UniversityLibrary

eCommons

Help
Log In(current)
  1. Home
  2. College of Agriculture and Life Sciences
  3. CALS Professional Masters Projects
  4. Food Science & Technology Professional Masters Projects
  5. Characterizing thermoduric bacteria in raw milk using PCR and sequencing: A comparative study of LPC and mLPC methods

Characterizing thermoduric bacteria in raw milk using PCR and sequencing: A comparative study of LPC and mLPC methods

File(s)
Pradeep_Amrita_Project.pdf (27.44 MB)
Permanent Link(s)
https://hdl.handle.net/1813/117294
Collections
Food Science & Technology Professional Masters Projects
Author
Pradeep, Amrita
Abstract

Thermoduric bacteria are heat-resistant microorganisms capable of surviving pasteurization, making them persistent challenges in dairy safety and quality. This study aimed to characterize thermoduric bacteria present in raw milk using two enumeration methods - Laboratory Pasteurization Count (LPC) and modified Laboratory Pasteurization Count (mLPC) - followed by molecular identification through PCR amplification and 16S rRNA gene sequencing. Bacterial isolates obtained from both methods were compared to assess diversity and detection efficiency. Over 1,100 isolates were recovered and identified, with Bacillus emerging as the most dominant genus. The mLPC method captured a broader range of both spore forming and non-spore forming genera compared to LPC, indicating its improved sensitivity. These findings underscore how method selection influences bacterial recovery and highlight the value of integrating classical and molecular approaches. This study contributes to a better understanding of raw milk’s microbial ecology and informs improved monitoring strategies for thermoduric organisms in the dairy industry.

Date Issued
2025-05
Committee Chair
Martin, Nicole
Degree Level
Master of Food Science
Type
dissertation or thesis

Site Statistics | Help

About eCommons | Policies | Terms of use | Contact Us

copyright © 2002-2026 Cornell University Library | Privacy | Web Accessibility Assistance