Learn to recognize possible tests for protein and examine various foods for protein.
Principle
Chinine is the main alkaloid of the bark of the Chinabaum. It has a typical, bitter taste and is hardly soluble in water, but soluble in alcohol, ether and chloroform
In this experiment, chinine is extracted from tonic water with an organic solvent and detected by its fluorescence ...
Principio
El experimento sobre la destilación del vapor de agua con el sistema de camisa de vidrio puede ser construido y desarrollado cómodamente en el tablero para experimentos completos.
For our bodily nourishment we absorb the most varied foods: bread, meat, cheese, fruit, and butter, to name a few. All these foods contain, besides water, salts and constituents which cannot be utilised, substances which are indispensable for our bodies. They are called nutrients, ...
Experiment is part of a complete solution set with a total of 44 experiments for botany, reproduction, soil, food and digestion, senses, physiology.
With student worksheet, appropriate for all class levels.
With detailed instructor information.
Optimized for ...
Examination of foods for sugar content. Sugars are important nutrients in our foods. Like starch they belong to the carbohydrates. In contrast to starch, however, they can be directly absorbed into our bodies through the intestinal wall, without first having to be transformed through ...
Tests for fat and examination of various foodstuffs for fat. Fats, together with starch and sugar, the carbohydrates, supply the energy necessary to maintain all the vital processes. They do this through the mechanism of respiration (=combustion) in the metabolism of our ...
Learn to recognize possible tests for protein and examine various foods for protein. Proteins differ from carbohydrates and fats in containing nitrogen. In some there is also phosphorus or sulphur. Hence they cannot be replaced by carbohydrates or fats. Proteins build up the body and ...
All digestive processes are induced by enzymes which are contained in the digestive juices - the saliva, gastric juice and pancreatic juice. In our mouth the food gets mechanically crushed and mixed with saliva. Saliva contains the enzyme ptyalin, an amylase. This enzyme cleaves ...
How are proteins digested in the stomach. After the food has been chewed in the mouth, it goes through the gullet into the stomach. There the digestion of the proteins begins. The gastric juice contains the enzyme pepsin and diluted hydrochloric acid, which actives pepsinogen, the ...
Examine the speed with which various proteins are digested.Different proteins, which are also in our food, are differently digested by our body, which is why we speak of easily digestible and indigestible proteins.
Examination of the action of the enzymes of the pancreatic juice. The pancreatin used in this experiment is a mixture of these enzymes and is extracted out of the pancreas of pigs.
Benefits
Experiment is part of a complete solution set with a total of 44 experiments ...
The digestibility and hence the wholesomeness of the fats contained in our food depend on the speed with which they can be softened and melted at body temperature. The bile and the enzymes of the digestive juices can attack and decompose melted fats more easily because of their ...
PHYWE presenta la nueva unidad de rayos X: tecnología innovadora, máxima seguridad y comodidad.
Más información
