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1.6. PULLULAN: FUNDAMENTALS
(KEYWORDS)
•
Bacterial polysaccharide (extracellular).
Aureobasidium pullulans
•
Linear (unbranched)
•
Maltotriose repeating units
•
Flexible α-1,6 linkage (see Fig. 7.12c in textbook)
•
C
∞
= 4.3
21
•
q (persistence length) = 1.3 nm
•
Available as nearly monodisperse fractions in a wide range of
molecular weights (M = 5.000 – 850.000) and therefore much used as
standards and reference materials in molecular weight determinations.
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Buliga and Brant (1987) Int. J. Biol. Macromol. 9, 71.
O
CH
2
OH
O
OH
OH
O
O
O
HO
OH
OH
O
CH
2
OH
OH
O
CH
2
OH
OH
OH
O
CH
2
OH
O
OH
OH
O
O
O
HO
O
OH
O
O
HO
O
OH
OH
n
<-- Note: Flexible 1,6-linkage