PHYTOCHEMISTRY

Course objectives

The primary objectives of phytochemistry are traditionally linked to the identification of new natural substances from plants and the determination of their distribution throughout the plant kingdom, also in relation to the interactions between plants, plants and animals and between plants and pathogens (with reference to biological control of pests). Naturally, an important aim of phytochemical research is the discovery and development of substances with pharmacological activity. Because of these characteristics, phytochemistry is perhaps the most interdisciplinary of all the teachings to which it is linked. In fact, the chemistry of plants has an impact on all areas of botany and on many areas of chemistry, as well as implications that must take into account many complementary knowledge, concerning, among others, ecology, agriculture, physiology, ethnobotany, pharmacognosy , organic chemistry, biochemistry and chemotaxonomy. This interdisciplinary approach is the main force of phytochemistry, consequently, the course will focus on giving it particular prominence, allowing the student to relate these different aspects. The student will also be able to acquire extensive knowledge on the classification and the role played by secondary metabolites in plants and, above all, on their chemical nature and potential biological activity. Consequently, the course aims to introduce the criteria for a correct identification and classification of secondary metabolites, particularly for biologically active compounds of plant origin. At the same time the aspects related to the main biosynthetic pathways, to metabolic transformations and to the compartmentalization of these substances within plant organisms will be explored. The final objective to be achieved will therefore enable the student to know the main aspects of the study of the chemistry of medicinal plants with particular reference to extraction methods, biosynthesis, chemical characteristics and any structure-activity relationships of natural substances of plant origin. For the course prerequisites are not required, but it would be opportune for the student, in order to better understand the topics covered, a preliminary acquisition of wide basic knowledge, especially in the botanical, chemical and biological fields. The evaluation of the student study will be carried out mainly through a final oral exam, which will focus on all the topics of the program. The student will deepen what he learned during the lessons on the recommended texts, and above all on the didactic material that will be provided to them by the teacher.

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PAOLA DI MATTEO Lecturers' profile

Program - Frequency - Exams

Course program
Definition of Phytochemistry. Purpose. Hints of bioenergetics. Definition of Primary and Secondary Metabolism. Enzymes and enzymatic kinetics. Major metabolic pathways in higher plants. Chlorophyll photosynthesis, light phase and dark phase. Cellular respiration: glycolysis, Krebs cycle and oxidative phosphorylation. Plants C3, C4 and CAM. Pentose phosphate oxidative pathway and fatty acid biosynthesis. Primary and secondary metabolite concept. Products of primary metabolism Carbohydrates. Monosaccharides. Disaccharides. Polysaccharides and their derivatives. Starch and cellulose. Mucilage and gums. Plant-based sources of carbohydrates. The protides. Proteolytic enzymes and plant-based oligoproteins. Products derived from amino acids. Plant sources of proteolytic enzymes. Lipids. Triglycerides of pharmaceutical interest: Fixed oils, vegetable butters and vegetable waxes. Plant sources of lipids. Secondary metabolism, medicinal plants and plant drugs. Acetate-derived metabolites. Biogenesis of Polychaetids. Glycosides of anthracene derivatives. Diantroni. Plant sources of acetate metabolites. Metabolites derived from isopentenyl diphosphate: biogenetic pathways. Monoterpenes, iridoids. Sesquiterpenes, Diterpenes, Triterpenes and steroids. Cardioactive steroid glycosides. Tetraterpenes. Plant sources of isopentenyl diphosphate metabolites. Plant sources of isopentenyl diphosphate metabolites. Essential oils. Shikimate-derived metabolites: Shikimate pathway. Cinnammic acids. Phenylpropenes. Lignin and Lignans. C6-C1 compounds. Coumarins. Gallic acid and tannins. Plant sources of shikimate metabolites. Metabolites from mixed biogenetic pathways: Furanocoumarins. Flavonoids. Stilbenes and cannabinoids. Alkaloids. Alkaloids derived from Tyrosine, Tryptophan, Ornithine, Histidine and Phenylalanine. Purine and terpenoid alkaloids. Plant sources of alkaloids.
Prerequisites
There is no prerequisite, but basic knowledge in the field of general and organic chemistry, botany and biology is required.
Books
For the study of the topics covered in the course, the recommended text is the following: BIOLOGIA DELLE PIANTE MEDICINALI ANTONIO RAPISARDA ED. UTET The student will also be able to use the teaching material used in class that will be made available on the e-learning platform.
Frequency
Attendance is optional.
Exam mode
The evaluation of the student will be carried out with the performance of a final oral exam on all the topics covered in the course. The student, on optional choice, may also be evaluated on the presentation of an in-depth study of a topic covered during the course. The student will be able to use the textbook recommended by the teacher and all the teaching material used during the classroom lessons, which will be available on the e-learning platform
  • Lesson code1052171
  • Academic year2024/2025
  • CourseApplied Pharmaceutical Sciences
  • CurriculumSCIENZE ERBORISTICHE
  • Year3rd year
  • Semester1st semester
  • SSDBIO/15
  • CFU6
  • Subject areaAttività formative affini o integrative