CARBOHYDRATES IDENTIFICATION PROCESSES IN PRACTICAL CLASSES OF BASIC BIOCHEMISTRY IN THE COURSE OF PHYSICAL EDUCATION.

Abstract

This work has as goal to contribute for the Biochemistry teaching improvement in the course of Physical Education. The activities developed in the classes practices consolidate the carbohydrates properties, its digestion and absorption, and the metabolic action of it's byproducts. They boarded the next themes: 1 - disaccharides solubility; 2 - Identification of monosaccharide, disaccharides and polysaccharides, with dosages in laboratory, for dilution and reactions degree observation in the coloration acuity; 3 – Blood lactate analysis in field to verify the involvement of the lactic anaerobic metabolism by means of measures, before and after conservative and intense effort. It applied to methodology with students of the 2nd period, in the first semester of 2008 at UNIVERSO- Salgado de Oliveira University, in Belo Horizonte, 98% agree that the practices accomplished in laboratories favor the learning of Biochemical concepts, and 99% consider that the manipulation in laboratory and in field favor the carbohydrates recognition process. In the experiments of qualitative analysis it noticed for solubility reaction observation of disaccharides and the sugars reducer coloration intensity, with Benedict's Reagent and of the starch with Iodine. Quantitatively, in a work accomplished in field, it was analyzed blood lactate quantity in rest, after 3 returns in soccer field measuring 1050m, and after run of 20 minutes, untrained student (3,15 ± 2,29), cardiac frequency (155-172; 162,7± 8,6) and trained (2,43 ± 1,37), cardiac frequency (150-187; 177±18,9). The done experiments are of easy accomplishment and can be used to revision of some chemical concepts, especially in what concerns to the concepts comprehension related scientific to carbohydrates and beginning of the study of energetic metabolism in the Basic Biochemical discipline.