Food Science & Technology: Courses & Careers: Courses: FOOD2490/2657 Analytical Microbiology

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FOOD2490/2657 - Analytical Microbiology (Interim)

NOTE: If 'Interim' appears after the course name, this outline is a DRAFT document.


SESSION 2, 2000


Academic staff


Name Location Phone Fax Email
Dr J.M. Cox
(Convenor)
Room 105
Building B8a
9385 5665 9385 5931 julian.cox@unsw.edu.au
Professor G.H. Fleet Room 112
Building B8c
9385 5664 9385 5931 g.fleet@unsw.edu.au

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Outline

The purpose of this course is to give students theoretical and practical training in specialised and advanced technologies for microbiological analysis, particularly that of foods. The focus will be on contemporary nucleic acid-based molecular methods, electrophoretic techniques, immunoassays, impedimetric, and bioluminescence assays, facilitated culture and biochemical identification systems, and some of the more specialised cultural methods (e.g. spoilage fungi, stressed organisms). Protocols for evaluating the reliability and limitations of these technologies will be addressed, along with practical issues of sampling and interpretation of data.

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Objectives

Upon satisfactory completion of this course, students should have:

  • gained in-depth theoretical and hands-on practical experience of a range of modern analytical techniques for the microbiological analysis of foods and microorganisms associated with foods

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Prerequisites

It is assumed that students will have an understanding of general and food microbiology.

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Target students and career prospects

The following students would find this course of value: undergraduate and graduate students in the areas of food science and technology, microbiology, biotechnology, as well as professionals in the food or allied industries and government agencies, who are concerned with the microbiological quality and safety of foods, and fermented foods and beverages. Food companies, consulting analytical laboratories and various government agencies at state, national and international levels employ food microbiologists.

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Structure

The course consists of lectures, discussion groups and laboratory classes totalling 4-6 hours contact per week, scheduled 2-5 PM Monday and 9 AM -12 noon Friday. Lectures will be held in Room G07, Building B8a, while laboratory sessions will be based in the teaching laboratory of Building C8a, and will involve use of equipment and facilities in the food microbiology research laboratories of the Department.

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Assessment

Item Weighting
Mini-review of assigned technology 25%
Independent laboratory exercise and report 25%
Mid-Session examination 10%
Final examination 30%
General performance in laboratory 10%

To pass the course, students MUST obtain a pass mark in each assignment and the final examination.
The final exam (2 hours duration) will consist of 20-25 short answer questions and be conducted as an informal examination on a negotiated date during the formal examination period. A detailed description of each assignment will be distributed and discussed during the first lecture session of the course.
Students who fail to attend at least 80% of classes may be refused permission to sit for examinations or other forms of assessment. Please consult the UNSW Student Guide 2000 for policy with respect to attendance, failure to sit for examinations and conditions for Special Consideration. Special consideration will only be granted in genuine, properly documented cases of hardship, such as recent bereavement or serious illness.

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Texts and reference materials

There is no single text that covers the range of material dealt with in this course. Reference will be made during most classes to key articles in the scientific literature, while each laboratory exercise contains a bibliography.
Some relevant texts include:

  • Food Microbiology Fundamentals and Frontiers, M.P. Doyle, L.R. Beuchat and T.J. Montville (eds), ASM Press, Washington DC, 1997
  • Foodborne Microorganisms of Public Health Significance, 5th Ed, A.D. Hocking et al. eds), AIFST (NSW Branch) Food Microbiology Group, Sydney, 1997
  • Compendium of Methods for the Microbiological Examination of Foods, C. Vanderzant and D.F. Splitstoesser (eds), American Public Health Association, Washington DC, 1992
  • Rapid Food Analysis and Hygiene Monitoring Kits, Instruments and Systems, P.-J. Raugel, Springer-Verlag, Berlin, 1999

At least one copy of many of these books is held by the Biomedical Library, while others are held in personal collections of Graham Fleet and/or Julian Cox. The latter are made available to students on VERY short-term loan. Copies of some key articles are available for borrowing from Ms Yvone El-Ghetany, Room 101, Building B8c, Food Science and Technology.

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Lecture and Laboratory Program

The dates and respective lecture and laboratory topics are listed below. Most lectures will be given by Professor Fleet or Dr Cox, with guest lectures from other departmental staff or external scientists on some topics. The laboratory classes will be conducted by Professor Fleet and Dr Cox with tutorial assistance as required. Note that some days and weeks will be devoted to lectures or laboratories only, while others will be a mix of the two formats.

Date Lecture/laboratory
(Lecturer/s)
Topic/s
17 Jul Lecture (JMC) Introduction, class organisation, allocation of assignments, discussion of independent laboratory exercise
Lecture (GHF) Modern methods for the microbiological analysis of foods - in perspective
21 Jul Lecture (GHF) Impedance technology and its use in determing the microbiological quality of foods
Laboratory Preparation of complex culture media
24 Jul Laboratory
(JMC/GHF)
Comparative analysis of foods for total microbial load by cultural and impedance techniques
28 Jul Lecture (GHF) Immunoassay principles and applications to foods
Laboratory Review results of impedimetric analysis of foods
31 Jul Laboratory Commence cultural/immunoassay detection of Salmonella
4 Aug Laboratory Immunoassay detection of Salmonella
7 Aug Lectures (JMC) ATP and lux-based bioluminescence technology
Microbiological tests for factory hygiene
11 Aug Laboratory Evaluation of hygiene - behind the scenes at the Roundhouse
14 Aug Discussion Hygiene test results from the Roundhouse
Lectures (JMC) Molecular/nucleic acid-based methods in food microbiology
18 Aug Lectures (JMC) Molecular/electrophoretic techniques in food microbiology
21 Aug Laboratory PCR detection of Listeria spp./Listeria monocytogenes
Pulsed-field gel electrophoretic analysis of Listeria isolates
25 Aug Laboratory Continue molecular practical exercises
Demonstration of the Riboprinter
28 Aug JMC Chromatographic techniques (GC, GC/MS, HPLC) for food microbiology
1 Sep JMC Chromatographic techniques (GC, GC/MS, HPLC) for food microbiology
4 Sep Tutorial (JMC/GHF) Q&A Session on course content
8 Sep JMC/GHF Mid-Session examination
11 Sep -
6 Oct
NO CLASSES - MID-SESSION/OLYMPIC RECESS
9 Oct Lecture (video + discussion) Facilitated cultural techniques (Petrifilm, Redigel, HGMF)
Submission of mini-review assignment
Laboratory Analysis of foods using Petrifilm
13 Oct Laboratory Interpretation of Petrifilm data
16 Oct Lecture (GHF) Isolation, enumeration and identification of yeasts in foods
Lecture (GH) Computer-assisted kit systems for identification of foodborne microorganisms
Laboratory Examination of foods for yeasts
20 Oct Laboratory Examination of foods for yeasts, Biolog and ATB identification systems
23 Oct Lecture (AH) Filamentous fungi in foods
Laboratory Analysis of foods for filamentous fungi
27 Oct Laboratory Evaluate analysis of foods for filamentous fungi
30 Oct Lecture (PA) Principles and applications of flow cytometry to the microbiological analysis of foods
3 Nov JMC/GHF Evaluation of a rapid technology - role-play/case study
6 Nov JMC/GHF Evaluation of a rapid technology - role-play/case study
10 Nov JMC/GHF Student presentations Discussion of the course - Q&A session
13 Nov JMC/GHF Student presentations
Submission of ecology/isolation assignment
17 Nov JMC/GHF Discussion of course - Q&A session

Guest lecturers:

  • GH: Dr Gillian Heard, FST, UNSW
  • AH: Dr Ailsa Hocking, Food Science Australia
  • PA: Dr Paul Attfield, Macquarie University

Assessment Items

An explanation of each of the assessment tasks follows:

1. Assignment: ecology and approach to isolation of a selected foodborne microorganism

Each student will be assigned a non-pathogenic foodborne microorganism, and undertake a review of its properties, ecology, and methods for its isolation. The assignment should be approximately 3000 words in length, and should be presented in the style of a review article in an appropriate scientific journal.

2. Mini-review: technology

Each student will be assigned one technology for the microbiological analysis of foods, and prepare a mini-review of that technology and its applications. The assignment should be approximately 3000 words in length, and should be presented in the style of a review article in an appropriate scientific journal.

3. Mid-Session examination

This examination will consist of 10 short answer questions, covering lecture and/or practical material up to Week 6. The examination will be held during a class session on the date indicated in the lecture program.

4. Final examination

The final examination will consist of 25 short answer questions, covering the breadth of the course. It will be held during the final examination period, on a date to be negotiated with the class.

 

Academic Misconduct (Plagiarism)

Plagiarism policy

Plagiarism is the presentation of the thoughts or work of another as one's own.*

 Examples include:

  • direct duplication of the thoughts or work of another, including by copying material, ideas or concepts from a book, article, report or other written document (whether published or unpublished), composition, artwork, design, drawing, circuitry, computer program or software, web site, Internet, other electronic resource, or another person's assignment without appropriate acknowledgement;
  • paraphrasing another person's work with very minor changes keeping the meaning, form and/or progression of ideas of the original;
  • piecing together sections of the work of others into a new whole;
  • presenting an assessment item as independent work when it has been produced in whole or part in collusion with other people, for example, another student or a tutor; and,
  • claiming credit for a proportion a work contributed to a group assessment item that is greater than that actually contributed. **

 Submitting an assessment item that has already been submitted for academic credit elsewhere may also be considered plagiarism. Knowingly permitting your work to be copied by another student may also be considered to be plagiarism.  An assessment item produced in oral, not written form, or involving live presentation, may similarly contain plagiarised material.

 The inclusion of the thoughts or work of another with attribution appropriate to the academic discipline does not amount to plagiarism. 

Students are reminded of their Rights and Responsibilities in respect of plagiarism, as set out in the University Undergraduate and Postgraduate Handbooks, and are encouraged to seek advice from academic staff whenever necessary to ensure they avoid plagiarism in all its forms.

 The Learning Centre website is the central University online resource for staff and student information on plagiarism and academic honesty. It can be located at:

www.lc.unsw.edu.au/plagiarism

 The Learning Centre also provides substantial educational written materials, workshops, and tutorials to aid students, for example, in:

  • correct referencing practices;
  • paraphrasing, summarising, essay writing, and time management;
  • appropriate use of, and attribution for, a range of materials including text, images, formulae and concepts.

 Individual assistance is available on request from The Learning Centre.

Students are also reminded that careful time management is an important part of study and one of the identified causes of plagiarism is poor time management. Students should allow sufficient time for research, drafting, and the proper referencing of sources in preparing all assessment items.

 * Based on that proposed to the University of Newcastle by the St James Ethics Centre. Used with kind permission from the University of Newcastle.

** Adapted with kind permission from the University of Melbourne.

 

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Undergraduate Programs
BSc: Food Science & Technology
- Introduction
- Yr 1, Yr 2, Yr 3, Yr 4

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