Soy

Question 1

what can soy protein be used as?

Answer 1

an imitation meat product

Question 2

what is the soy protein composition

Answer 2

90% of proteins are for storage

Beta- conglycinin

• glycoprotein with 3 subunits (alpha, beta, alpha-prime)
• forms transparent, soft, elastic gels

Glycinin

• a hexamer with numbered subunits (1a, 1b, 2, 3, 4, 5) that are linked via disulfide bonds
• form hard gels

Question 3

what is soy protein isolate

Answer 3

the most refined type of protein made by solubilising defatted soy flakes and precipitating them with acid at the isoelectric point, and then separating the proteins from the flake and spray drying

Question 4

what are the functional properties of soy protein

Answer 4

high water holding capacity
- good binding properties

gelation
- uses in meat, soup, baking

emulsification
- fat binding

texturisation
- meat extenders and replacers

Question 5

what are the uses of soy flour

Answer 5

browning
freshness
tendering

Question 6

what are the uses of soy concentrate

Answer 6

fat and water binding
protein fortification
moisture retention

Question 7

what are the uses of soy isolate

Answer 7

infant formula
protein enrichment
water retention
protein source