From 2 November 2020, the autumn semester 2020 will take place online. Exceptions: Courses that can only be carried out with on-site presence.
Please note the information provided by the lecturers via e-mail.

Christophe Lacroix: Catalogue data in Spring Semester 2015

Name Prof. Dr. Christophe Lacroix
FieldLebensmittelbiotechnologie
Address
Inst.f. Lebensm.wiss.,Ern.,Ges.
ETH Zürich, LFV C 20
Schmelzbergstrasse 7
8092 Zürich
SWITZERLAND
Telephone+41 44 632 48 67
Fax+41 44 632 14 03
E-mailchristophe.lacroix@hest.ethz.ch
DepartmentHealth Sciences and Technology
RelationshipFull Professor

NumberTitleECTSHoursLecturers
752-2302-00LMilk Science Information 1 credit1VJ. Berard, C. Lacroix, L. Meile
AbstractThe course provides information on synthesis and composition of milk, and the effects of various factors. Furthermore, specific hygienic and microbial problems of milk and fermented milk products, as well as basics on processing of milk into dairy products will be presented and discussed. The course is conceptually oriented towards the agri-food chain.
ObjectiveStudents attending this course get a comprehensive overview on milk and important milk products both from an agricultural and a food science perspective. In this way they earn competence at this borderline which is a pre-requisite for an efficient collaboration between milk producers, processors and consumers.
ContentTopics (contact hours)
- Milk synthesis and composition (Michael Kreuzer): 4 h
- Hygienic aspects of milk and milk products (Leo Meile): 6 h
- Milk processing (Christophe Lacroix): 4 h
Total contact hours: 14 h
Self-study within semester: 16 h (especially preparation for the examination)
Lecture notesDocumentations, links and other materials will be provided by each lecturer at the start of his part of the course. Additionally, an extensive German documentation for the part of M. Kreuzer can be downloaded via Moodle in "Kurs Nutztierwissenschaften". The access code will be communicated by e-mail.
LiteratureInformation on books and other references will be communicated during the course.
Prerequisites / NoticeA special point for this course is that it is taught by professors from food and agricultural sciences and is aimed to integrate both fields and provide a clear illustration of this important duality for the production of high quality, and safe dairy food.

This course is a core element of the Minor in Food Quality and Safety for students of the Master in Agroecosystem Science. It is optional (i) in the Major of Animal Science, (ii) for students selecting Majors in Crop Science or Food & Resource Economics. No specific qualification is demanded to attend the course.

Performance control is done by a final written examination of 60 min duration of the open-books type (all paper files can be brought and used).
752-5002-00LFermented Milk Products Restricted registration - show details 2 credits2VC. Lacroix
AbstractThis integration course will address the production processes for important fermented milk foods. The production and application of food cultures (starter and secondary cultures) in fermented milk products will be examined. The central role of microorganisms and the effects of important process parameters for high product quality and safety will be explained.
ObjectiveTo understand the principles for utilization and the important roles of microorganisms in production, quality and safety of fermented milk foods, by integrating basic knowledge in food microbiology, microbial physiology, biochemistry, technology and engineering.
ContentThis course will present complex production processes for important fermented milk foods. The production of food cultures used to initiate and control fermentations will be explained as well as recent developments in this area. A special emphasis will be devoted to processing of milk into cheese, for which basic and applied knowledge is most advanced. Emphasis will be placed on complex processing, effects of important raw material and process parameters for high product quality and safety, and central role of microorganisms and microbial products in the elaboration, quality and preservation of fermented milk products.
Lecture notesA complete course document and/or copy of the power point slides from lectures will be provided, depending on the topic.
LiteratureA list of references will be given at the beginning of the course for the different topics presented during this course.
Prerequisites / NoticeA prerequisite to this course is a) previously taken the course 'Food Biotechnology I (752-5001-00) and/or (b) previous courses supporting equivalent knowledge.
752-5002-01LFermented Plant and Meat Products Restricted registration - show details 2 credits2GC. Lacroix, L. Meile
AbstractThis integration course will address the production processes for important fermented plant and meat foods. The central role of microorganisms and the effects of important process parameters for high product quality and safety will be explained.
ObjectiveTo understand the principles for utilization and the important roles of microorganisms in production, quality and safety of important fermented plant foods and meat products, by integrating basic knowledge in food microbiology, microbial physiology, biochemistry, technology and engineering.
ContentThis course will present complex production processes for important fermented foods produced from different plant and meat materials. This course will build on knowledge on food cultures and microbial mechanisms presented in the course Fermented Milk Products, which is therefore a prerequisite for attending this course. Emphasis will be placed on complex processing of raw materials into fermented foods (such as sausages, sauerkraut, sourdough, vinegar, soy products), effects of important process parameters for high product quality and safety, biochemical processes, and central role of microorganisms and microbial products in the elaboration, quality and preservation of fermented plant and meat foods. Then short presentations will be made on topics selected by groups of students to illustrate the great diversity of traditional and new applications of microorganisms in fermented milk, plant and meat foods.
Lecture notesA complete course document and/or copy of the power point slides from lectures will be provided, depending on the topic.
LiteratureA list of references will be given at the beginning of the course for the different topics presented during this course.
Prerequisites / NoticeA prerequisite is the course "Fermented Milk Products" [752-5002-00] in the first half of the same semester or previous courses supporting equivalent knowledge.
This course is taught mainly in English.
752-5102-00LFood Fermentation Biotechnology3 credits2VC. Lacroix
AbstractFor this integration course, selected and current topics in bioprocess technology as applied to food will be selected to complement the teaching program in Food Biotechnology. Special emphasis will be given on downstream processing, bioprocess development, and metabolic engineering with current applications of microorganisms for producing high quality and safe food.
ObjectiveThe presentation and discussion of selected topics of food fermentation biotechnology:
- to present the main strategies for downstream processing for fermented media
- to provide examples of recent process development and future trends for production of high quality food and food ingredients.
- to develop experience for formulation and design of research and development projects relating to food fermentation technologies

This course will integrate knowledge in bioprocess technology, as well as microbiology and microbial physiology.
ContentThis course will address selected and current topics on bioprocess applied to food. As well, this course will allow the integration of concepts in food biotechnology through literature search and presentation of topics by students. Specialists from the Laboratory of Food Biotechnology will contribute to the selected topics as follows:

• New technologies for food fermentation
• Downstream processing treatments
• Metabolic engineering

Students will be required to complete a personal project on a selected aspect of bioprocesses and process evaluation. The project will involve information research and analysis followed by an oral presentation.
Lecture notesCopy of the power point slides from lectures will be provided.
LiteratureA list of references will be given at the beginning of the course for the different topics presented during this course.
Prerequisites / NoticeThis course is taught in English.