University of Florida

ABE 4812c - ABE 5815c
Food and Bioprocess Engineering Unit Operations

Semester Taught - Fall

Catalog Description

Credits: 4

Design and analysis of thermal, freezing, evaporation, dehydration; and mechanical, chemical and phase separations processes as governed by reaction kinetics and rheology of food and biological materials.


ABE 3612, EML 3100, and CWR 3201

Course Objectives

  • Train students in the engineering design, testing and analysis of unit processing operations employed in the food, pharmaceutical, and biotechnology industries (sterilization, pasteurization, freezing/refrigeration, drying, evaporation, and fermentation, along with physical, chemical and phase separations).
  • Introduce students to the general approach for design and economic feasibility of an entire process line for a food, pharmaceutical or biotech manufacturing plant.
  • Enhance communication skills, and impart a sense of professional, ethical and societal responsibility gained through knowledge of contemporary issues.

Contributions of Course to Meeting the Professional Component for ABET

This course contributes 4 credit hours toward meeting the minimum 48 credit hours of Engineering Topics in the basic-level curriculum for the Bachelor of Science Degree in Agricultural and Biological Engineering.

Relationship of Course to Program Outcomes

From the list of (a) through (k) program outcomes listed below, this course addresses the following (a), (c), (d), (e), (f), (g), (h), (j) and (k). Of these, (a), (c), (d), (f), (g), (h), (j) and (k) are assessed.

ABET Program Outcomes

  • (a) Apply knowledge of mathematics, science, and engineering
  • (b) Design and conduct experiments, as well as analyze and interpret data
  • (c) Design a system, component, or process to meet desired needs
  • (d) Function on multi-disciplinary teams
  • (e) Identify, formulate, and solve engineering problems
  • (f) Understand professional and ethical responsibilities
  • (g) Communicate effectively
  • (h) Understand the impact of engineering solutions in a global and societal context
  • (i) Recognize the need for, and engage in life long learning
  • (j) Understand contemporary engineering issues
  • (k) Use the techniques, skills, and modern engineering tools necessary for engineering practice


Dr. Art Teixeira
Office location: 207 Rogers Hall
Telephone: Work - 352-392-1864 x 207

 Material/Supply Fees


Class Materials Required

Textbooks / Notes

  • Introduction to Food Engineering by Singh and Heldman, AP

    Lecture Notes and Lab Manual, Florida Book Store, 1614 West University Avenue.

Recommended Reading

  • Principles of Fermentation Technology by Stanbury and Whittaker, PP.

    Virtual Experiments in Food Processing by Singh and Erdogdu, RAR Press, Davis , CA

    Handbook of Food Engineering by Heldman and Lund , Marcel Dekker

    Food Process Engineering, 2nd ed. by Heldman and Singh, VNR/AVI.  

Course Outline

Topics Covered

  • Reaction Kinetics
  • Thermal Inactivation of Bacterial Spores
  • Flow of Liquids (Fluid Transport and Flow Behavior)
  • Heat Transfer/Heat Exchangers
  • UHT Sterilization and Pasteurization
  • Thermal Processing of Shelf-stable Foods and Pharmaceuticals
  • Radiation Treatments
  • Freezing and Refrigeration
  • Dehydration and Psychrometrics
  • Evaporation/Concentration
  • Mechanical Separations (sedimentation, centrifugation, filtration)
  • Chemical Separations (Solvent Extraction)
  • Phase Separation (Distillation, Fractionation Columns)
  • Fermentations
  • Process Design / Process Economics

Laboratory Exercises

  • Reaction Kinetics
  • Fluid Transport and Flow Behavior
  • Pilot Plant Flash Pasteurizer - Part 1
  • Pilot Plant Flash Pasteurizer - Part 2
  • Retort/Autoclave Sterilization
  • Electron Beam, X-Ray, and Gamma Ray (Field Trip)*
  • Steam, Electricity, Cogeneration (Field Trip)
  • IQF, Plate, Cryogenic Freezing
  • Cabinet, Drum, and Spray Drying
  • Single and Multi-effect, TVR, Evaporator (Field Trip)*
  • Sedimentation, Centrifugation, Filtration, Membrane Separations
  • Fermentation and Anaerobic Digetsion (SEBAC Pilot Plant Field Site Trip)*
  • Solvent Extraction and Distillation

* Field trip reports include discussions of societal and environmental impacts, as well as related contemporary issues identified in current news media.

Attendance and Expectations

Attendance at all lectures, labs, and field trips is expected from all students at all times. Lab reports and trip reports are due within one week of when assigned.

Cell phone and musical device use is not allowed during class.


A C- will not be a qualifying grade for critical tracking courses.  In order to graduate, students must have an overall GPA and an upper-division GPA of 2.0 or better (C or better).  Note: a C- average is equivalent to a GPA of 1.67, and therefore, it does not satisfy this graduation requirement.  For more information on grades and grading policies, please visit:

Grading Scale
A 91-100%
B 81-90%
C 71-80%
D 61-70%
E <61%
Grading Method ABE 4812c ABE 5815c
Graduate Project   20%
Exam 1 25% 20%
Exam 2 25% 20%
Final Exam 25% 20%
Lab Reports 25% 20%

No make-up exams will be given except for valid medical reasons or unless prior arrangements have been made.

Academic Honesty

Academic Honesty

As a student at the University of Florida, you have committed yourself to uphold the Honor Code, which includes the following pledge: “We, the members of the University of Florida community, pledge to hold ourselves and our peers to the highest standards of honesty and integrity.”  You are expected to exhibit behavior consistent with this commitment to the UF academic community, and on all work submitted for credit at the University of Florida, the following pledge is either required or implied: "On my honor, I have neither given nor received unauthorized aid in doing this assignment." 
It is assumed that you will complete all work independently in each course unless the instructor provides explicit permission for you to collaborate on course tasks (e.g. assignments, papers, quizzes, exams). Furthermore, as part of your obligation to uphold the Honor Code, you should report any condition that facilitates academic misconduct to appropriate personnel. It is your individual responsibility to know and comply with all university policies and procedures regarding academic integrity and the Student Honor Code.  Violations of the Honor Code at the University of Florida will not be tolerated. Violations will be reported to the Dean of Students Office for consideration of disciplinary action. For more information regarding the Student Honor Code, please see:  

Accommodation for Students with Disabilities

The Disability Resource Center coordinates the needed accommodations of students with disabilities. This includes registering disabilities, recommending academic accommodations within the classroom, accessing special adaptive computer equipment, providing interpretation services and mediating faculty-student disability related issues.

0001 Reid Hall, 352-392-8565,  

Software Use

All faculty, staff and student of the University are required and expected to obey the laws and legal agreements governing software use. Failure to do so can lead to monetary damages and/or criminal penalties for the individual violator. Because such violations are also against University policies and rules, disciplinary action will be taken as appropriate. We, the members of the University of Florida community, pledge to uphold ourselves and our peers to the highest standards of honesty and integrity.

Campus Helping Resources

Students experiencing crises or personal problems that interfere with their general well-being are encouraged to utilize the university’s counseling resources. The Counseling & Wellness Center provides confidential counseling services at no cost for currently enrolled students. Resources are available on campus for students having personal problems or lacking clear career or academic goals, which interfere with their academic performance.

  • University Counseling & Wellness Center, 3190 Radio Road, 352-392-1575,

    Counseling Services
    Groups and Workshops
    Outreach and Consultation
    Self-Help Library
    Training Programs
    Community Provider Database

  • Career Resource Center, First Floor JWRU, 392-1601,