木薯淀粉介绍PPT课件
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or cassava starch production
Cassava root
Cassava starch
Milling
Peeling Washing Grating/rasping
Settling or dewatering
Starch washing
Drying Setting
.
6
2 Paper industry
In the paper and board industries, starch is used in large quantities at three points during the manufacturing process:
Ⅰ. at the end of the wet treatment, when the basic cellulose fiber is beaten to the desired pulp to increase the strength of the finished paper and to impart body and resistance to scuffing and folding;
Ⅱ. at the size press, when the paper sheet has been formed and partially dried, starch is usually added to one or both sides of the paper sheet to improve the finish, appearance, strength, and printing properties;
Ⅲ. in the coating operation, when a pigment coating is required for paper, starch acts as a coating agent and as an adhesive.
.
7
3 Textile industry
In the textile industry, starch is used in three main areas: sizing, finishing and printing. And approximately 80% of the starch used in textiles is used in sizing.
Mixing with w.ater
Filtering/screeing4
Application
Starch is one of the most abundant substances in nature, a renewable and almost unlimited resource.
Cassava starch is an important source of energy for humans and animals as food, and has many remarkable characteristics, including high paste viscosity, high paste clarity, and high freeze-thaw stability, which are advantageous to many industries as a raw material, such as paper, textiles, adhesives, confectionery, pharmaceuticals, and building materials.
.
5
1 As food
The root in powder form is used to prepare farinha, a meal used to make thin cakes sometimes called cassava bread. The starch of cassava yields a product called Brazilian arrowroot.
.
8
4 Adhesives industry
Cassava starch adhesives are more viscous and smoother working. They are fluid, stable glues of neutral pH that can be easily prepared and can be combined with
Cassava starch and it’s application
L/O/G/O
Major：Chemical technology
.
1
About cassava
Cassava, is also called manioc or yucca. The plant grows in a bushy form, up to 2.4 m (8 ft) tall, with greenish-yellow flowers. The roots are up to 8 cm (3 in) thick and 91 cm (36 in) long. The roots contain from 20 to 32% of starch at maturity. Early maturing cultivars are ready for harvest after 8-12 month.
.
2
Two varieties of the cassava are of economic value: the bitter, or poisonous; and the sweet, or non-poisonous. The toxin in cassava is called "linamarin". It is chemically similar to sugar but with a CN ion attached. Just a few pieces of cassava roots contain a fatal dose of poison.
Cassava root
Cassava starch
Milling
Peeling Washing Grating/rasping
Settling or dewatering
Starch washing
Drying Setting
.
6
2 Paper industry
In the paper and board industries, starch is used in large quantities at three points during the manufacturing process:
Ⅰ. at the end of the wet treatment, when the basic cellulose fiber is beaten to the desired pulp to increase the strength of the finished paper and to impart body and resistance to scuffing and folding;
Ⅱ. at the size press, when the paper sheet has been formed and partially dried, starch is usually added to one or both sides of the paper sheet to improve the finish, appearance, strength, and printing properties;
Ⅲ. in the coating operation, when a pigment coating is required for paper, starch acts as a coating agent and as an adhesive.
.
7
3 Textile industry
In the textile industry, starch is used in three main areas: sizing, finishing and printing. And approximately 80% of the starch used in textiles is used in sizing.
Mixing with w.ater
Filtering/screeing4
Application
Starch is one of the most abundant substances in nature, a renewable and almost unlimited resource.
Cassava starch is an important source of energy for humans and animals as food, and has many remarkable characteristics, including high paste viscosity, high paste clarity, and high freeze-thaw stability, which are advantageous to many industries as a raw material, such as paper, textiles, adhesives, confectionery, pharmaceuticals, and building materials.
.
5
1 As food
The root in powder form is used to prepare farinha, a meal used to make thin cakes sometimes called cassava bread. The starch of cassava yields a product called Brazilian arrowroot.
.
8
4 Adhesives industry
Cassava starch adhesives are more viscous and smoother working. They are fluid, stable glues of neutral pH that can be easily prepared and can be combined with
Cassava starch and it’s application
L/O/G/O
Major：Chemical technology
.
1
About cassava
Cassava, is also called manioc or yucca. The plant grows in a bushy form, up to 2.4 m (8 ft) tall, with greenish-yellow flowers. The roots are up to 8 cm (3 in) thick and 91 cm (36 in) long. The roots contain from 20 to 32% of starch at maturity. Early maturing cultivars are ready for harvest after 8-12 month.
.
2
Two varieties of the cassava are of economic value: the bitter, or poisonous; and the sweet, or non-poisonous. The toxin in cassava is called "linamarin". It is chemically similar to sugar but with a CN ion attached. Just a few pieces of cassava roots contain a fatal dose of poison.