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Galactomannan content and composition in cassia brewsteri seed

journal contribution
posted on 06.12.2017, 00:00 by D Cunningham, Kerry WalshKerry Walsh
Seed glactomannans function as both an energy reserve and a water reservoir in germinating seed of many leguminous plants, and are used commercially as gelling agents, mainly in processed foods. Cassia brewsteri is a leguminous tree endemic to eastern Queensland. The galactomannan content of 40 samples of C. brewsteri seed from throughout the distribution of the species ranged from 28.3 to 39.7% of seed dry weight. The galactomannan content of whole seed was 33.7 +- 0.4% (mean and s.e.m.on a dry weight basis). The mannose: galactose ratio ranged from 4.6 tp 6.3 and averaged 5.4 +- 0.1. C. brewsteri gums prepared in a manner analogous to that used in the preparation of commercially available carob gum were tested for gel strength relative to industrial gelling agents carob gum and Senna tora gum. The break force index (BFI) for the most effective C. brewsteri gum preparation was 107% relative to carob gum and 83% relative to Senna tora gum. On the basisof these biochemical and fundamental data, C. brewsteri has potential as a source of commercial seed galactomannas.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

42

Issue

8

Start Page

1081

End Page

1086

Number of Pages

6

ISSN

0816-1089

Location

Collingwood, Victoria

Publisher

CSIRO

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Faculty of Arts, Health and Sciences;

Era Eligible

No

Journal

Australian journal of experimental agriculture.

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