Faculdade de Ciências e Tecnologia

Food Chemistry and Biochemistry



Academic unit

Faculdade de Ciências e Tecnologia


Departamento de Ciências e Tecnologia da Biomassa



Teacher in charge

Ana Luísa Almaça da Cruz Fernando, Benilde Simões Mendes

Weekly hours


Total hours


Teaching language



Acquisition of the fundamentals of chemical structures and the chemical and biochemical processes related with food. Development of the necessary skills to perform chemical and biochemical laboratory assays, related with food analyses.


Basic knowledge of chemistry and biochemistry.

Subject matter

1. Water: structure, interactions with food components and food materials, water activity

2. Amino-acids, peptides, proteins: classification, physical and chemical reactions, enzyme catalised reactions, sensorial properties, texturization, food  fortification.

3. Enzymes: characteristics, co-factors, enzimatic catalysis, kinetics, interaction with aw and temperature.

4. Lipids: fatty acids, glycerides, fosfo and glycolipids, lipoproteins, others. Structures. Properties and reactions. Food changes.

5. Glucides: Mono, oligo, polissacarides. Structures, properties. Reactions.

6. Flavours

7. Vitamines

8. Minerals

9. Aditives

Laboratory Work:

1. Maillard reaction; 2. Protein functionality; 3. Lipid peroxidation; 4. Vitamines; 5. Aditives


Food Chemistry. Belitz, H.D., Grosh, W. 2nd Edition, Springer-Verlag, New York, 1999.

Food: The Chemistry of Its Components. Coultate, T.P. 3rd Edition, RSC Paperbacks, 2001.

Teaching method

 Theoretical Lectures with datashow. Experimental studies in laboratory facilities.


Evaluation method

Continuous assessment:

Evaluation of theoretical: 3 individual mini-tests (MT), MT_1 (20% of the final grade); MT_2 (25% of the final grade); MT_3 (25% of the final grade).

Evaluation of the laboratory component: delivery of two reports conducted in groups, each with a weight of 15% of the final grade.

Final rating: 0.2 * Mini-test1 +0.25 Mini-test2  +0.25 * Mini-test3 * +0.15 * report1 +0.15report2

Approval with a minimum score of 9.5 (scale of 20).

students who do not pass their continuous assessment examination may go to the final exam. Classification in this case equals: 0.7 * exam note * +0.15*report1+0.15*report2.

Approval with a minimum score of 9.5 (scale of 20).
Students who wish to improve the mark in this discipline will have to register for exam. The note of the practical component is not likely to be improved