木薯淀粉介绍.ppt

木薯淀粉介绍
第1页，本讲稿共10页
Cassava, is also called manioc or yucca.
The plant grows in a bushy form, up to
m (8 木薯淀粉介绍
第1页，本讲稿共10页
Cassava, is also called manioc or yucca.
The plant grows in a bushy form, up to
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.
About cassava
第2页，本讲稿共10页
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.
第3页，本讲稿共10页
Drying
Settling or dewatering
Cassava starch
Peeling
Filtering/screeing
Washing
Cassava root
Mixing with water
Starch washing
Setting
Grating/rasping
Milling
Simple process for cassava starch production
第4页，本讲稿共10页
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 fre