Test 3 Flashcards
factors affecting planning of balanced diet
food’s
- availability
- origin
- chemical composition
- predominant function
- how to combine them
Cereals
- rice
- wheat
- maize
staple food of nearly half the population
rice
food for cattle and poultry
maize
why is maize used as a fodder
- it’s rich in fats
2. it’s cheaper
cereal: role
- main source of energy - carbohydrates - 350 kcal per 100 gms
- gives significant proteins 6-12 of total
- minerals
- vitamin b complex
energy per 100 g (cereals)
350 kcal
yellow variety of maize
has carotene
cereals - % nutrition in terms of total food an average indian takes
energy -70-80
proteins- 50
cereal proteins
deficit in lysine
maize proteins
deficit on lysine and Tryptophan
leucine in maize
interferes with niacin formation
- pellagragenic
complementary action
cereal and pulses - balanced and complete protein
milled rice
bran, husk, germ removed
- increased storage life
- low spoilage
- altered taste, texture
parts of rice grain
- grain (embryo)
- inner endosperm
- outer pericarp and aleurone layer
endosperm of rice grain
contains starch
pericarp aleurone layer and germ of rice grain contains
- essential nutrients
protein content of rice
6-9%
rice protein - quality
more lysine than other cereals - better
vitamins in rice
vitamin B complex
types of rice
husked, undermilled or home pounded, raw milled
undermilled / home pounded rice - polishing
7% removed
milled rice - polishing
14% removed
effect of milling on rice’s protein
loss of 15%
effect of milling on rice’s thiamine
loss of 75%
effect of milling on rice’s riboflavin
loss of 60%
effect of milling on rice’s niacin
loss of 60%
people eating milled rice are prone to
beri beri
what kind of rice should be eaten
under milled or parboiled
effect of washing rice in excess water
loss of 60% of water soluble vitamins
effect of cooking in excess water and then draining away the water
loss of b complex vitamins
rice cooking - instructions -
- one part rice
2. two parts water
parboiling - definition
partial cooking in steam
parboiling - hot soaking process technique recommended by
central food technological research institute, mysore
parboiling - hot soaking water technique - steps
- temp 65-70 degree C
- soak paddy in a container
- 3-4 hours
(swell grain) - drain water
- steam in same container for 5-10 min
- dry
- home pound or mill
advantage of parboiling
- steaming - vitamins and minerals of aluerone layers are driven in to the endosperm - milling won’t lead to loss of nutrients now
- drying - germ gets attached to grain firmly and also, the rice grain hardens. starch is gelatinised
hard rice grain - advantage -
- resistance to insects
2. storage suitable
advantage of starch gelatinisation
improvement of keeping quality
disadvantage of older parboiling methods
off flavour smell
modern methods of parboiling - advantage
no smell
wheat - types
whole wheat atta
refined maida, white flour (70% extraction)
protein content of wheat
9-16 %
limiting amino acids in wheat proteins
- lysine
2. tryptophan
processing of wheat flour
- whitens flour
2. loss of vitamins and minerals occur
how to increase the quality of maize protein genetically
- introduction of opaque - 2 gene
protein quality of maize
- increased leucine
2. decreased lysine and tryptophan
nutritive composition of maize
- energy
- protein
- fats
maize use -
- corn flakes
- desserts
- custards
Millets
- smaller grains
- ground
- outer layer is not removed
millets - examples
- jowar/ sorghum
- bajra/ pearly millets
- ragi
- kodo
- minor millets/ pseudocereals
jowar - other names
- sorghum
- kaffir corn
- milo
jowar % protein content
9-14 %
protein quality of jowar
- low lysine , threonine
2, high leucine
jowar is primarily consumed in
- telangana
2. marathawada
Bajra is primarily consumed in
northern and peninsular india
Bajra protein content %
10-14 %
nutritive value of bajra
- deficit lysine and threonine
- high vitamin B complex
- Calcium
- iron
Ragi - nutritive advantage
high calcium
Ragi is primarily consumed in
andhra and karnataka as porridge
cheapest millet
ragi
pulses
- grams
- lentils
- peas
- beans
lathyrus sativus
lathyrism
- common in madhya pradesh, uttar predesh and bihar
2. due to excessive consumption of kesari dal
protein value of pulses -
20-25%
- more quantity of protein than egg, meat, fish
- inferior quality than animal proteins
- rich in lysine, minerals, vit B complex (riboflavin, thiamine)
- poor in methionine and cysteine
germinating of pulses
- increase vitamin C and B
fermentation of pulses
- increase riboflavin, thiamine and niacin
poor man’s mea
pulses
maximum energy among pulses
soyabean (432 kcal)
maximum proteins among pulses
soyabean (43.2 g)
maximum fat among pulses
soyabean (19.5 g)
maximum calcium among pulses
horse gram (287 mg)
maximum iron among pulses
soyabean (10.4 mg)
maximum thiamine among pulses
soyabean (0.73 m)
maximum riboflavin among pulses
soyabean (0.39 mg)
maximum niacin among pulses
peas dry (3.4 mg)
maximum vitamin C among pulses
bengal gram (3 mg)
antinutritional factors in pulses
- phytates
2. tannins
how are anti nutritional factors destroyed
by applying heat
high oligosacchrides in pulses cause
flatulence
soyabean nutritive profile
- 40% protein
- 20 % fats
- 4% minerals
- limiting amino acid is methionine
soyabean - ways of eating
- as a dal
- chappati atta
- soyabean milk and curd
function of vegetables
- protective
vegetables - nutritive content
- high vitamin
- high mineral
- green peas, beans - good sources of protein
- dietary fibers
Types of vegetables
- green leafy
- roots and tubers
- others
green leafy
palak, amaranth, cabbage, methi
nutritive value is directly proportional to
green color of the vegetable
green leafy - nutritive profile
- carotenes
- calcium
- iron
- vitamin c
- riboflavin
- folic acid
- 2-4 % proteins (lysine)
- high water content
- high dietary fibers
limiting amino acids in green leafy
- sulfur containing amino acid
antinutritional factors of green leafy
oxalates (decrease calcium and iron absorption)
calorific value of green leaves
25-30 kcal per 100 g
RDA green leafy
40 g
roots and tubers
- potatoes
- yams
- sweet potato
- colocasia
- carrots
- onions
- radish
- topioca