| |
SOME
USEFUL NUTRITIONAL INFORMATION
This Appendix
contains some useful nutritional information. Again here
we have been very selective. Section 1 is a brief
discussion of the nutritive value of foods and desiable
cooking practices. Section 2 gives a few balanced diets
more as an example with a table on selected diets for an
adult woman. Section 2 also contains samples of a few
diets for a few therapeutic conditions: a bland diet, a
low calorie diet and a low sodium diet. Section 3 briefly
discusses the advantages of boiled rice over milled rice
as also certain advantages of fermented food like idli,
dosa, and sprouts in combination with fermental foods.
Section 3 also discusses certain other foods and why some
varities are more preferred than the other.
Section
1
NUTRITIVE
VALUE OF FOODS
What
are the foods that we eat made up of ?
Foods are made up of substances called nutrients. The
nutrients are proteins, carbohydrates, fats, minerals and
vitamins. They are present in most foods but in different
amounts.
What
are proteins ?
Proteins are the chief substances of the body cells.
Bone, blood and body tissues are built up from proteins.
That is why foods rich in proteins are called "body-building
foods".
Infants and children are continuously growing nd thus
need protein for their growth and development.
Adults need proteins to maintain their body in godd
health, while pregnant women need protein for the growth
of the foetus. Similarly, a nursing mother needs more
protein to make up the loss in protein through breast
Milk, meat and eggs are very good sources of proteins.
Among vegetable foods, pulses and nuts are rich in
protein. Cereals also have fair amounts of protein but
less than what pulses contain. Among cereals, rice
contains less protein than wheat, but the quality of the
protein in rice is better.
For steady growth and good health, it is necessary to
include some of the following foods in the daily
diet--milk, meat, rice or wheat and eggs in the non
vegetarian diet and milk, pulse, rice or wheat and nuts
in the vegetarian diet.
What
are Carbohydrates?
Carbohydrates are another class of nutrients. They
are sources of energy. Cereals like rice, wheat or bajra
contain a lot of carbohydrates. Sugar, glucose, jaggery
and honey are pure carbohydrates. Root vegetables like
tapioca and sweet potato and fruits like bananas are rich
in carbohydrates.
Fats
Fats are concentrated sources of energy. Fats provide
twice as much energy as protein and carbohydrates.
Butter, ghee, vanaspati and vegetable oils like gingelly
oil, ground nut oil, sunflower oil and mustard oil are
the commonly used fats.
The energy given out by food is measured in calories.
When a person eats more energy-giving foods than
necessary, the excess is storedin the form of fat.
The excess weight of these people is mainly due to stores
of fat in the body.
Vitamins
Vitamins are
substances found in small amounts in several foods.
Vitamins are needed for growth and normal health. The
body cannot produce them and therefore they must be
provided through the diet. They are needed in very small
amounts. There are numerous vitamins present in foods.
Here are some of the important ones :
Vitamin A: Fish liver oil like cod-liver oil or
shark-liver oil is the best source of this vitamin.
Papaya, ripe mangoes, carrots, palak, amaranth, drumstick
leaves are also good sourses.
Vitamin A is also found in milk, curds, egg and liver.
Green leafy vegetables and yellow fruits contain plenty
of a substance called carotene, which is converted into
vitamin A in the body. Vitamin A is required for good
eyesightand smooth skin.
Vitamin B-Complex
There are three important vitamins in the B-complex
group-thiamine, riboflavin and nicotinic acid. As a
result of deficiency of these B-vitamins, the mouth and
tongue are affected. Foods like milk, eggs, pulses, nuts
and leafy vegetables (e.g. amaranth) are good sources of
the B-vitamins.
Minerals
Many minerals are needed by the body. Bones and teeth
are made up mainly of the minerals calcium, magnesium and
phosphorus.
Calcium
Calcium is needed for the proper development of bones
and teeth. Pregnant and nursing mothers require more
calcium.
Iron
Iron gives blood its red colour. It is needed for
blood formation. Green leafy vegetables contain good
amounts of iron. Pregnant and nursing mothers and growing
children need more iron. Therefore, their diet must
include green leafy vegetables in liberal amounts.
Balanced
diet
A balanced diet is that which contains different foos
in the right proportions and amounts so that all the
nutrients are provided in required quantities.
To ensure a balanced diet one should include in the diet
:
- a mixture of cereals
(rice, wheat, jowar, bajra, etc.)
- pulses (greengram
dal, benalgram etc,)
- at least one green
leafy vegetable and other vegetables.
- a fruit daily (fruits
like sitaphal, guava, papaya and tomato are cheap
and wholesome).
- fats and oils.
- a glass of milk every
day.
- an egg a day(if
possible and acceptable).
- meat or fish (if
not-vegetarian)
Vegetarian should take
larger amounts of pulses compared to non-vegetarians.
Energy provided food is used for doing work. This energy
is measured in calories. The number of calories required
by a person will vary with sex, age and activity. Men
require more calories and hence more food than women.
Pregnant and nursing women and growing children need much
more than others.
People doing hard, strenous work like stone-cutting, coal
mining will need more calories than a person doing desk
work (e.g. typist).
COOKING
Good nutrition
includes correct cooking methods, so as to get the
maximum benefit out of the food. cooking gives the food
pleasant flavour and taste and makes it pleasing to the
eye and easily digestable. But overcooking is harmful as
it leads to a loss of nutrients.
There are various methods of cooking.
Boiling
Care must be taken to see that boiling is not
continued for long periods. The water left over after
cooking should never be thrown away. It can be used in
soups or other liquid preparations.
Steaming
This method does not cause much loss of nutrients.
Frying
This is cooked in a small amount of oil. The
precaution to be taken is to see that the oil is at the
right temperaturebefore the food is put in. It is not
advisable to use the same oil for many fryings.
How to
cook vegetables?
- Use the vegetables as
soon as they are brought, unless they are stored
in a refrigerator.
- Vegetables should be
washed well before cooking.
- The must not be
soaked in water for long assome minerals and
vitamins may get dissolved in the water and thus
get lost.
- While peeling
vegetables, care must be taken to remove as
little as possible. This is because a large part
of the vitamins and minerals in the vegtables lie
just under the skin. That is why vegetables
cooked with their skin or retain more food value.
- Vegetables shouldbe
cut into large pieces or if possible cooked
whole.
- Do not throw away the
green leafy tops of vegetables like carrots,
radish, knol-khol, cauliflower and beatroot for
they are good sources of many nutrients.
- Green leafy
vegetables must be cooked in a covered vessel and
they must be added to water brought to boil.
- Vegetables should be
cooked in little amounts of water and in as short
a time as possible.
- Cooked vegetables (or
any other foodstuff) shouldcision to redo their
answers as the matter became more clear and
interesting when in print.
Use of
raw vegtables.
Vegetables can be
served raw as slads. Raw vegetables are very nutritious
but they must be washed well in clean water to remove all
dirt and harmful bacteria
Tomatoes, cucumber, spinach, cabbage etc., can all be
eaten raw and a salad can be included in the daily diet.
Cooking
of Rice
While cooking
rice, see that rice is washed in little water and nost
soaked in water. To one part of rice add 2 to 2-1/2 parts
of water so that all water is absorbed at the end of
cooking. If too much water is used, the excess water will
have to be removed later on as conjee and
this will carry away some of the nutrients.*
Storage
Most foods except
fresh foods need to be stored. Improper storage can lead
to spoilage.
Cereals, dired pulses, condiments, spices etc., must be
stored in clean, tightly covered tins. No moisture must
be allowed to enter the containers.
The spoiled or damaged part of the vegetable has to be
removed before storing. Vegetables must to stored in a
cool, dry place, covered with a damp cloth.
Vegetables such as onions or potatoes can be stored in
dry open tins or baskets.
Section
2
1.
Balanced Diets for an Adult Woman
| |
Sedentary work |
Moderate work |
Heavy work |
Additional |
| |
Vegetarian |
Non-Vegetarian |
Vegetarian |
Non-Vegetarian |
Vegetarian |
Non-Vegetarian |
Pregnancy
|
Lactation |
| Cereals |
300 |
300 |
350 |
350 |
475 |
475 |
50
|
100 |
| Pulses |
60 |
45 |
70 |
55 |
70 |
55 |
-- |
10 |
| Green leafy vegetables |
125 |
125 |
125 |
125
|
125
|
125 |
25 |
25 |
| Other vegetables |
75 |
75 |
75 |
75 |
100 |
100
|
-- |
-- |
| Roots and tubers |
50 |
50 |
75 |
75 |
100 |
100 |
-- |
-- |
| Fruits |
30 |
30 |
30 |
30
|
30
|
30
|
--
|
-- |
| Milk |
200 |
100 |
200 |
100 |
200 |
100 |
125 |
125
|
| Fats and oil |
30 |
35 |
35 |
40 |
40 |
45 |
-- |
15 |
| Sugar and jaggery |
30 |
30 |
30 |
30 |
40 |
40 |
10 |
20 |
| Meat and fish |
--
|
30 |
--
|
30 |
--
|
30 |
|
|
| Eggs |
-- |
30 |
--
|
30 |
--
|
30 |
|
|
| Groundnuts |
--
|
--
|
--
|
--
|
40* |
40* |
|
|
*An
additional 25 g. of fats and oils can be included
in the place of groundnuts.
Soure : A Manual of Nutrition. NIN. 1982.
op.cit.p.52. |
2.
Bland Diet
A bland diet is a
diet which is non irritating chemically and medhanically
and which inhibits gastric secretion. It can be used for
gastric and duodental ulcer patients after acute symptoms
have subsided. With slight chages and reduction in fibre
and fat content it can also be used for diarrhoea and
ulcerative colitis.
Principles
The following foods should be avoided while
formulating the diet :
- All bran, coarse
cereals
- Skin and seeds of
fruits
- Raw vegetables
- Vegetables like
cabbage, beans, ladies-fingers and bitter-ground
etc.
- Spices and condiments
- Fried food
- Strong beverages
- Pickles, chutneys,
etc.
- Tender coconuts water
- Chocolate, puddings
and similar preparations
- Meat extracts and
soups.
Sample Diet
| Foodstuffs |
Vegetarian g |
| Rice |
100 |
| White bread |
40 |
| Pulses |
40 |
| Potatoes |
75 |
| Vegetables |
100 |
| Milk |
1000 ml |
| Curd |
300 |
| Skimmed milk powder |
15 |
| Orange juice |
150 |
| Banana |
50 |
| Sugar |
25 |
| Butter |
7 |
| Ghee or Oil |
25* |
Note
: Non-vegetarians can take a half-boiled egg
instead of skimmmed milk power.
* This amount can be used for cooking purposes. |
This diet provides :
| Calories |
2000 |
| Protein |
75 g |
| Fat |
90 g |
| Carbohydrate |
220g |
Distribution
| Cooked measures |
Cooked measures |
| 7 A.M |
|
1 P.M. |
|
| Milk |
1 glass |
Soft boiled rice |
2 katories |
| Sugar |
1 tsp. |
Sieved cauliflower and carrots |
1-1/2 katories |
| Half boiled egg |
One |
Curd |
1 katori |
| Or |
|
|
|
| Skimmed milk powder |
3 tsp. |
Sieved green gram dal (dehusked) |
1/4 katori |
| 10 A.M |
|
4 P.M. |
|
| Toast |
Two |
Milk |
1 glass |
| Butter |
1 tsp. |
Sugar |
1 tsp. |
| Milk |
1 glass |
Biscuits |
Two |
| Sugar |
1 tsp. |
Banana |
Half |
| 7 P.M. |
|
10 P.M. |
|
| Soft boiled rice |
2 katories |
Milk |
1 glass |
| Sieved lentil dal |
1/4 katori |
Sugar |
1 tsp. |
| Mashed Potato |
1/2 kotori |
|
|
| Sieved Organe juice |
1/2 glass |
|
|
3.
Low-Calorie Diet
The diet provides
less calories than the total energy requirements for the
day : thus it provides for depletion of body fat. It is
cases of abesity, cardiac disturbances and hypertension
in over-weight individuals.
Principle
The following foods should be avoided while
formulating the diet :
- Sweets, chocolates,
jaggery, jam, honey, preserves, puddings, cakes
etc.
- Roots and tubers
- Fried foods
- Dried fruits and nuts
- Alcoholic drinks
unless they contain artifical sweetening agents
instead of sugar
- Cream anf free fats
- Fruits like banana,
custard-apple, sapota, dates, etc.
Sample diet
| Foodstuff |
Vegetarian |
Non-vegetarian |
| |
g |
g |
| Wheat flour |
60 |
90 |
| Rice |
30 |
60 |
| Other vegetables |
200 |
200 |
| Green leafy vegetables |
200 |
200 |
| Pulses |
70 |
50 |
| Citrus fruits or Tomato |
200 |
200 |
| Milk (cows) |
600 ml |
250 ml |
| Skimmed milk power |
20 |
-- |
| Oil or ghee |
7 |
12 |
| Lean meat or Fish |
-- |
50 |
| Egg |
-- |
One |
This diet provides :
| Calories |
1200 |
| Protein |
60 g |
| Fat |
30 g |
| Carbohydrates |
170 g |
4.
Low Sodium Diet
This is a
normal diet but with a low sodium content. The food
preparation for this diet are cooked without extra salt
and high sodium foods are avoided. This is designed for
use in conditions where there is sodium retention like
oedema, nephritis, cardiac diseases, toxaemia of
pregnancy and hypertension.
Principle
The following foods should be avoided while
formulating the diet.
- Salt in cooking or on
table
- Sea fish, salted meat
and salted dry fish, lier etc.
- Salted butter and
cheese
- All foods to which
salt or baking soda has been added in cooking.
- Pickles and chutneys.
Section
3
WHY
SOME FOODS ARE BETTER THAN OTHERS
Rice
Parboiled and Milled
Parboiled rice is
prepared by soaking paddy in water for 2/3 days, boiled
or steamed, dried and then dehusked. The grain is
slightly coloured and is harder than the orginal grain.
When rice is dehusked in mills, as against hand pounding
it, the grain has a white polished appearance and
therefore milled rice is also know as polished rice.
The nutrient content of the three varities of rice are
shown in the table below :
Chemical Composition of
Products Derived from Paddy *
| |
amount of 100 g |
| |
protein (g) |
ash (g) |
thiamine (ug) |
riboflavin (ug) |
| dehusked rice |
6.8 |
0.12 |
208 |
105 |
| parboiled rice |
6.8 |
0.12 |
200 |
100 |
| milled rice |
6.8 |
0.10 |
105 |
52 |
*
Data obtained in the Biochemistry Department of
Baroda University.
In Rajalakshmi, op. cit. |
The thiamine
deficiency that is caused by intake of polished rice has
often been associated with beriberi and even pellagra.
Beriberi is prevalent in AP and practically absent in
Tamil Nadu and Kerala where parboiled is consumed mostly.
The upper classes who consume polished rice make up for
their thiamine intake by eating pulses, milk and other
foods. Fortification of polished rice with deficient
nutrients has not found acceptability because of the
yellow colour of such fortified rice. The only solution
seems to be popularisation of parboiled rice and
discouragement, if not banning of miled rice.
Sprouting
and Fermentation
Loss
During Cooking
We discuss here sprouting and fermentation as they
are simple methods to enhance nutritive value of foods.
This is especially important as a lot of minerals are
lost during cooking unless the water used for cooking is
retained. This is prevented by cooking foods in just
sufficient water. Similarly rinsing and washing before
cooking results in mineral losses. Foodgrains should be
rinsed lightly and vegetables washed before cutting.
However, with the onset of fertilizers and pesticides, it
may be safer to lose minerals than ingest harmful
chemicals in oneself.
Considerable amounts of carotene and Vitamin A are lost
during cooking specially in a shallow and deep frying.
Thiamine and riboflavin are lost during both wet and dry
methods of cooking. Vitamin C is readily destroyed by
heat, the losses being less with deep frying.
Starchy foods are digested better after cooking. The
biological value of proteins is generally increased by
wet methods of cooking. Protein value of pulses increases
when subjected to heat because of the destruction of
trypsin inhibitors. In cereals, on the other hand, dry
methods of cooking (roasting, baking, parching) result in
decreased protein because of the loss of lysine (an
essential aminoacid that goes into building of protein),
in which they are already deficient.
Fats deteriorate in nutritive value when subjected to
prolonged heat combined with exposure to air. Changes in
fat quality are less with baking, in bread, puddings,
etc.
Increase
in Vitamin Content
Fermentation and sprouting can compensate for the
above losses by bringing about increase in vitamin
content of foods. Fermentation makes cereals and pulses
more suitable for children in the post-weaning period. It
improves digestibility of the food. The micro organisms
during fermentation secrete enzymes that facilitate the
partial
Increase
in Vitamin Content during Sprouting and Fermentation1
| |
% increase in |
Ascorbic acid2 |
| |
thiamine |
riboflavin |
nicotinic acid |
(mg per 100 g) |
| |
S3 |
F4 |
S&F5 |
S |
F |
S&F |
S |
F |
S&F |
S |
F |
S&F |
| Wheat |
44 |
17 |
50 |
42 |
60 |
81 |
44 |
60 |
80 |
10 |
7 |
26 |
| Maize |
10 |
10 |
15 |
47 |
50 |
100 |
47 |
50 |
100 |
10 |
6 |
-- |
| Blackgram |
15 |
8 |
15 |
48 |
50 |
90 |
52 |
50 |
91 |
60 |
40 |
85 |
| Moth bean |
15 |
9 |
20 |
65 |
95 |
115 |
96 |
110 |
163 |
90 |
70 |
135 |
| Greengram |
33 |
11 |
33 |
56 |
70 |
100 |
48 |
77 |
96 |
80 |
65 |
106 |
| Bengalgram |
18 |
15 |
22 |
52 |
60 |
100 |
45 |
52 |
93 |
60 |
-- |
86 |
| Lentils |
15 |
6 |
21 |
45 |
60 |
100 |
45 |
60 |
100 |
17 |
12 |
43 |
| Soyabean |
20 |
16 |
22 |
49 |
61 |
85 |
54 |
86 |
92 |
-- |
-- |
-- |
- values
obtained in the Biochemistry Department
of Baroda University. Cited in
Rajalakshmi, op. cit.
- the raw grain
contains negligible amounts
- S. soaked in
water for 6-12 hours and allowed to
sprout under warm moist conditions for 24
hours.
- F. batter
prepared with coarsely ground grain,
water and salt and allowed to ferment for
10-15 hours.
- S & F.
sprouted, wet ground with salt to form a
batter and fermented.
|
degradation of
starch, protein, etc. and thereby help synthesise
vitamins. Usually some combination of cereals, millets
and/or legumes is soaked in water for five to six hours,
ground into a batter and allowed to ferment overnight at
room temerature. This principle is used in making popular
fermented foods like idli and dosa in South India and
khaman dhokla in Gujarat.
When fermentation is followed by sprouting, there are
further increases in vitamin content. The table adjoining
clearly shows the increase in vitamin content during
sprouting (S) and fermentation (F).
The gas that comes from eating beans is caused primarily
by two unusual starches, stachyose and raffinose. These
starchy villains can fortunately be removed from the
beans by soaking and cooking. Probably the best method of
eliminating these gas producing starches is by sprouting.
Thus this not only increases the protien content, but
also decreases the starch content, and shortens the
cooking time of legumes. Sprouting has been explained in
Basic Holistic Workbook, see Chapter 3, pp.55 to 59.
During the process of sprouting, some of the stored
starch in the legume is used up in forming the tiny
leaves and rootlets and in manufacturing vitamin C, and
other nutrients. Even an overnight soaking initiates this
process of bringing the beans to life and is
an important way of improving digestibility. Increasing
in digestibility and decrease in cooking time are very
useful especially for legumes, because dry whole legumes
are less easily cooked and digested than whole cereals.
Sprouted legumes can be used instead of the dals normally
used in fermentation, thus increasing the nutritive
content of fermented foods even more.
Sugar
and Wheat
We show briefly
below why gur (jaggery) is to be preferred over refined
sugar as also whole wheat bread over white bread.
| Refined Sugar |
Gur from cane sugar |
| No vitamins, minerals, fat, protein,
fibre; Only carbohydrates and empty calories.
Causes nutrient debt in body. |
Sucrose, iron, calcium, zinc,
copper, chromium. |
| Researches show decalcification of
teeth. |
No harm to teeth |
| High correlation with diabetes |
No diabetes. |
Composition of
Palm Gur as Compared to that of Cane Gur
|