TLE Effects Of Cooking Vegetables And General Rules Of Vegetables In Cookery Flashcards
What are the Effects of cooking vegetables
- Changes in texture
- Water is either lost or absorbed
- Changes in color
- Changes in nutrients
Fibers are often softened or toughened
Changes in texture
What are the changes in texture
A. Cellulose and hemicellulose
B. Addition of acid toughen fibers
C. Addition of alkali like baking soda soften hemicellulose
D. Addition of lime causes firmness or delay softening due to the
reaction of calcium from lime
heating generally softens fibers
A. Cellulose and hemicellulose
What is calcium from lime
Apog
What are the effects of Water is either lost or absorbed.
A. Vegetables contain high amount of water, leafy and
succulent vegetables lose water and become limp.
B. Vegetables with significant amount of starch (dried beans,
root crops, tubers) absorb water because of the hygroscopic property of starch.
What effects of cooking vegetables is this?
B. Vegetables with significant amount of starch (dried beans,
root crops, tubers) absorb water because of the
hygroscopic property of starch.
Water is either lost or absorbed
What effects of cooking vegetables is this ?
A. Vegetables contain high amount of water, leafy and
succulent vegetables lose water and become limp.
Water is either lost or absorbed
What effects of cooking vegetables is this
A. Cellulose and hemicellulose
Changes in texture
What effects of cooking vegetables
B. Addition of acid toughen fibers
Changes in texture
What effects of cooking vegetables is this
C. Addition of alkali like baking soda soften hemicellulose
Changes in texture
What effects of cooking vegetables is this
D. Addition of lime causes firmness or delay softening due to the
reaction of calcium from lime
Changes in texture
Cooking for a short time, helps maintain color.
Changes in color
what is the effect of acid on the pigment chlorophyll
olive green
The effect of heat, acid, alkali, and metal on the pigment
Changes in color
what is the effect of acid on the pigment
anthocyanins
color is stable
what is the effect of acid on the pigment
carotene
little effect
what is the effect of acid on the pigment
anthoxanthins
no effect
what is the effect of alkali on the pigment
anthocyanins
Deeper red
purple or blue
depending on
alkalinity
what is the effect of alkali on the pigment
chlorophyll
Intensifies
green color
what is the effect of alkali on the pigment
carotene
Little effect
what is the effect of prolonged
cooking on the pigment chlorophyll
Olive green
what is the effect of alkali on the pigment
anthocyanins
Yellow
what is the effect of prolonged
cooking on the pigment carotene
Little effect
unless
excessive
way darkens
what is the effect of prolonged
cooking on the pigment anthocyanins
Little effect
what is the effect of prolonged
cooking on the pigment anthoxanthins
Darken if
excessive in
the presence
of iron
what is the effect of Solubility in
water on the pigment chlorophyll
Slightly
Soluble
what is the effect of Solubility in
water on the pigment carotene
Slightly
Soluble
what is the effect of Solubility in
water on the pigment anthoxanthins
very
Soluble