This document summarizes several plant-based proteins - soy protein, cotton seed protein, and rape seed protein. It provides details on the composition and properties of soy protein, including that it is derived from soybeans and contains around 42% protein. It describes the process for preparing soy protein concentrate and isolate. The document also notes that cotton seed protein is a good source of protein and oil, and that rape seed protein contains 15-18% protein.

1. PLANT BASED
PROTEINS
AMINA P.E.
Ist M.Sc. BP

2. Contents
Soy Protein
Cotton Seed protein
Rape seed protein

3. INTRODUCTION
 Proteins are natural, renewable, and
biodegradable polymers which have attracted
considerable attention in recent years in terms
of advances in genetic engineering, eco-friendly
materials, and novel composite materials based
on renewable sources.
 Proteins, as naturally occurring polymers, are
importantrenewable resources produced by
animals, plants, and bacteria. ZIn terms of
potential sources of materials, soy protein, zein,
and wheat proteins (WP) are among the main
plant proteins

4. Soy Protein

6. SOY PROTEIN
o The soybean plant called ‘ The Gold that
Grows ’ , originated in China, has
attracted attention in recent years
because of its versatile uses.
o Soybeans contain approximately
>42 per cent protein,
>20 per cent oil,
>33 per cent carbohydrates,
>and 5 per cent ash on a dry basis.

7. The storage soy protiens consisit of
a mixture of protiens α, β, and γ
conglycinin, glycinin, and other
globulins ranging in molecular
weight from about 140 to 300 kDa
and differing in physicochemical and
other properties.

8. Process for Preparing soybean
Protein concentrate
 Once the oil is extracted, the protein level of the defatted solids,
known as “meal”.
 Processing of soybean involve to major industries
>Soybean crushing
>Protein ingredient processing
 During crushing the beans are usually dried or heated to loosen the
hull and cracked into 6-8 pieces
 Aspirating and screening then separate the hull from the cotyledon
pieces

9.  The cotyledon pieces are heated and then flaked with roller mills.
 The flakes are extracted with hexane to reduce oil content to less than
1%.
 the amount of heat, moisture and time used to evaporates the solvent
from the meal affect the solubility of the meal protein.
 A flash desolventizer uses low moisture and shorter heat exposure to
produce soy protein ingredients with high water solubility
 Flash desolventization produces meal known as white flakes in which
85% of the protein soluble.

10.  The bulk of soy protein concentrate is produced by
extracting white flakes with 50-60% aq. Alcohol, 60%
ethanol often preferred.
 The most highly refined soy protein products
commercially available are protein isolate being more
than 90% protein.

12. Native Soy protein
 Maximum tensile strength- 41MPa with molding
temperature 160°C and moisture level 11.2%.
 Plastic made from soy concentrate can have tensile
strength slightly higher than those made from soy
isolate
Properties

13. Modification of soy protein
 Acid treatment
 Acetylation
 Cross linking
 Esterification etc.

14. Application
 Food uses:
>Salad dressings
>Soups
>Meat Analogues
>Beverage powders
>Cheeses etc.
 Functional Uses:
>Adhesives
>Resins
>Cosmetics
>Paints
>Coatings etc.

15. Cotton seed protein
 The cotton seed protein consist of
>20% protein
>20% oil
>and 3.5% starch
 The cotton seed meal is a good source of protein. There
are two types of meal extraction process
>Solvent extraction
>Mechanical Extraction process

17. Applications
 It produces both food for animal and man
 Versatile fiber for clothing
 Home furnishing
 Cosmetics
 Industrial uses

18. Rape seed protein
 The seed from the rape seed plant are 1.5-3.2mm in
diameter
 Weigh- 2.5-6.5g
 Protein content- 15-18%
 Fiber content 31-35%
 Its mainly present in the cell wall

19.  The essential amino acids present in the rape seed
protein are
>Arginine
>Isoleutile
>Leutile
>lysin
>Phenyl alanin
>Valin
>Histidine

20. THANK YOU