Submitted by: Submitted by sielerkailyn0308
Views: 169
Words: 2339
Pages: 10
Category: Science and Technology
Date Submitted: 05/13/2013 03:21 PM
Fruits and vegetables are important components of our diet. We take
fruits in raw state or in the form of juices, while vegetables are
taken in the cooked form or sometimes as juices. Fruits and vegetables
provide us carbohydrates, proteins and various other important organic
compounds. The juices are rich sources of minerals, vitamins and many
micronutrients (calcium, iron etc.) essential for us. For example,
iron deficiency in humans causes anaemia and anaemic persons are
advised to take leafy vegetables e.g. spinach and apples which fills
up the iron deficiency. Vitamin-C deficiency causes scurvy which
results in bleeding of gums. This disease can be cured by taking
plenty of Vitamin-C rich fruits like lemon, orange, guava, amla, etc.
Some fruits like papaya and vegetables like carrot are rich in vitamin
A which is essential for eyes to prevent night blindness. In addition,
the fruits and vegetables , particularly their juices provide instant
energy to children, weak or old persons and patients too, as they can
be digested easily. This clearly shows that the fruits and vegetables
play a vital role in maintaining our good health.
Fruits and vegetables are seasonal and grown in different parts of our
country. They need to be stored for longer period and transported to
different places. It makes necessary for us to find out whether there
is any damage to the useful contents of the fruits and vegetable
during the storage and transportation or due to some preservatives or
other factors and what kind of nutrients, minerals, etc. are present
in their juices. With this idea in mind, the project has been
undertaken.
AIM - To analyse some fruit and vegetable juices for the contents
present in them.
APPARATUS - Test tubes, burner, litmus paper, beaker, tripod stand,
conical flasks, burette, pipette.
CHEMICALS REQUIRED -
1. Fehling's solution A
2. Fehling's solution B
3. Tollen's reagent...