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Protein containing nutrients

Tasks

Learn to recognize possible tests for protein and examine various foods for protein.

 

 
Детали

Продукт No: P1256101

Detection of quinine in tonic water

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 ...

 
Детали

Продукт No: P1259800

Steam distillation

Principle

An elegant and simple apparatus for carrying out water vapour distillations: the advantage of this arrangement is that it eliminates the need for a separate vapour generator, making it possible to operate with a single heat source (other set-ups require two). The vapour is ...

...

 
Детали

Продукт No: P3031251

Foods and nutrients

Principle

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, ...

 
Детали

Продукт No: P8012200

Starch containing nutrients

Benefits
  • 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 ...

    ...
 
Детали

Продукт No: P8012300

Sugar containing nutrients

Principle

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 ...

 
Детали

Продукт No: P8012400

Fat containing nutrients

Principle

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 ...

 
Детали

Продукт No: P8012500

Protein containing nutrients

Principle

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 ...

 
Детали

Продукт No: P8012600

Digestion in the mounth

Principle

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 ...

 
Детали

Продукт No: P8012700

Digestion in the stomach

Principle

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 ...

 
Детали

Продукт No: P8012800

Digestible and indesgestible protein

Principle

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.

 
Детали

Продукт No: P8012900

The function of the bile

Benefits
  • 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 ...

    ...
 
Детали

Продукт No: P8013000

Digestion in the intestine

Principle

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 ...

    ...
 
Детали

Продукт No: P8013100

Digestible and indigestible fats

Principle

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 ...

 
Детали

Продукт No: P8013200

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