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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
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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
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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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