Pullulan

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Structural formula
Pullulan; Monomer made up of three glucose units (maltotriose)
General
Surname Pullulan
other names

E 1204

CAS number 9057-02-7
Monomer Maltotriose
Molecular formula of the repeating unit C 18 H 30 O 15
Molar mass of the repeating unit 486.42 g mol −1
Brief description

White, colorless, odorless, swellable powder

properties
Physical state

firmly

solubility
  • easily soluble in water
  • insoluble in organic solvents
safety instructions
GHS labeling of hazardous substances
no classification available
H and P phrases H: see above
P: see above
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Pullulan is a natural, water-soluble linear polysaccharide that consists of maltotriose units. Three glucose units of maltotriose are linked to one another by α-1,4- glycosidic connections , while successive maltotriose units are connected by α-1,6 connections. The molecular weight of the polymers is between 10,000 and 400,000  Daltons . Pullulan is produced from starch and sugar with the help of the fungus Aureobasidium pullulans .

Various bacteria such as Klebsiella species have enzymes, the pullulanases , with which they break down pullulan and make it usable as a carbon source.

use

Pullulan is an edible, usually tasteless polymer , so the production of edible films / coatings is the main industrial use. Since it can not be broken down by the amylases contained in saliva , it is not digested and excreted by the body. Pullulan is also used as a cellophane-like packaging film, especially in Japan for food packaging. The market leader is the Japanese company Hayashibara.

Web links

literature

  • Jong Whan Rhim: Characteristics of Pullulan-based Edible Films . In: Food Science and Biotechnology . tape 12 , no. 2 , April 2003, p. 161-165 .

Individual evidence

  1. ↑ a b c d e Entry on pullulan. In: Römpp Online . Georg Thieme Verlag, accessed on June 11, 2013.
  2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.