tailieunhanh - PRACTICAL FERMENTATION A GUIDE FOR SCHOOLS AND COLLEGES

Developing a new functional food is an expensive process. Food companies have traditionally funded research for new food product formulations but for functional foods, the stakes are higher—for both food companies and con- sumers. Government investment in basic and applied research will promote the development of functional foods, but additional incentives are needed to reward private companies that pioneer new health claims. The research required for a functional food to meet scientific standards for efficacy and safety is a substantial investment, but currently the return on that investment is not exclusive to the company that conducted the research and developed the initial regulatory petition. As soon as the health claim is adequately documented,. | ĨGM PRACTICAL FERMENTATION a guide for schools and colleges Student Guide John Schollar and Benedikte Watmore Consultant Editor John Grainger National Centre for Biotechnology Education Project sponsored by The Society for General Microbiology John s Colour Sq w Student Guide PracticalFermentation Contents Investigation 1 Sauerkraut - a natural traditional fermentation 3 Investigation 2 Two or three sugar substrate 4 Investigation 3 Balancing the loss of carbon dioxide 5 Investigation 4 Yeast cells and enzyme - together they can do it 6 Investigation 5 A sugary choice 7 Investigation 6 How do they like it - alcohol levels and pH 9 Investigation 7 Deep purple - a dark secret 9 Investigation 8 Nothing s for free - you gain some you lose some 10 Investigation 9 Ester production - a fragrant or smelly fermentation 11 Investigation 10 Dextran production - a sticky fermentation 12 Investigation 11 Some sticky investigations - by gum 13 Investigation 12 Probably the best yeast in the world 14 Investigation 13 Probably the best pigment in the world 15 Investigation 14 Vibrio natriegens - for a speedy growth curve 16 Information 1 The bubble logger 17 Information 2 Principles of a bioreactor 18 Background reading Good Laboratory Practice - GLP for all Safety Z All investigations should be carried out using good laboratory practice. It is essential to read the section on the outside back cover before starting work. Chemicals and procedures requiring special care are marked with a warning symbol in the text. Introduction Practical Fermentation is written for students who are following an advanced course in biology particularly those taking an option in microbiology and biotechnology. It is also intended to be of value to those students who are studying science courses which contain a fermentation unit. This resource pack is a collection of practical activities aimed at introducing the user to a range of interesting and thought provoking fermentations. The investigations have

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