buy foods in all sorts of different types of packaging (think of the type of package your
prewashed salads come in versus the bag that your frozen vegetables come in).
Technology also affects our processed foods through the use of food additives, which can be
anything from emulsifiers that help the fat to bind to watery food components (think of your
mayonnaise – this is how the fat in the oil and egg yolk stays mixed together with the water and
vinegar), to the colour stabilizers in the food or the preservatives hat help to keep the food fresh.
3. Safety and Quality of Food
Food science considers all safety and quality aspects of foods before consumed including the
Food processing and manufacturing
Food preservation and packaging
Food safety and wholesomeness
Food quality evaluation
Consumer food use and preparation
4. Definition of Food Scientist
• Applies scientific knowledge and technological principles to the study of foods and food
• Can work in research or manufacturing
5. Food Science and Nutrition Research
Research begins with a question, e.g., what foods or nutrients might protect against the
common cold? In search of an answer, scientists make an educated guess called a
“hypothesis”. The scientists then systematically conduct research studies to test each
The scientific method is the steps that scientist take when trying to solve a problem or doing an
It is important to find, read and assess previous research that has been done on the topic in
When interpreting research, it is important to take an evidence-based approach, with the gold
standard for scientific information being peer-reviewed literature.
There are many databases that are available through the University of Manitoba library, which
provide access to full-text peer-reviewed journal articles.
Ex. PubMed, MEDLINE, and EBSCOhost
TABLE 2.2 IN TEXTBOOK
• There are many different research study designs:
A. Descriptive Studies: can generate a hypothesis, can focus on an individual or a
Population or correlational study: researchers compare data rom entire populations to identify
factors that might influence the incidence of a disease in various populations. It is impossible to
establish causality though since the whole population is being examined. Also