Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-03T05:15:49.528Z Has data issue: false hasContentIssue false
  • English
  • Français

Sugar-beet pulp as a source of pectin

Published online by Cambridge University Press:  27 March 2009

A. J. Codling  and
H. E. Woodman
A. J. Codling
Affiliation:
(School of Agriculture, Cambridge University.)
H. E. Woodman
Affiliation:
(School of Agriculture, Cambridge University.)
Get access Rights & Permissions [Opens in a new window]

Extract

It has been shown that dried sugar-beet pulp contains a high percentage of pectose. A number of successive digestions of 1 hour each with 0·5 per cent. ammonium oxalate at 100° C. extracts an amount of pectin equal to 34·5 per cent. of the weight of dried beet pulp, basing the determination on the weight of crude pectin precipitated when the extracts are run into 95 per cent. alcohol. A single prolonged digestion gives a yield of crude pectin equal to 32·2 per cent. of the dried beet pulp.

Digestion with acidic reagents, such as 0·5 per cent. oxalic acid, 0·6 per cent. tartaric acid, N/20 hydrochloric acid, etc., leads to a quicker extraction of pectin, owing to a speeding up of the pectose to pectin hydrolysis. The yield of pectin, however, is not thereby necessarily enhanced, since under such conditions the pectin undergoes a slow secondary hydrolysis during the extraction with the formation of reducing substances not precipitated by alcohol.

Prolonged digestion at 100· C. of dried sugar-beet pulp with water alone also leads to a satisfactory extraction of pectin.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 19 , Issue 4 , October 1929 , pp. 701 - 714
Copyright
Copyright © Cambridge University Press 1929

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

(1) Woodman, and Calton, . J. Agric. Sci. (1928), 18, 544.Google Scholar
(2) Schryver, and Haynes, . Biochem. J. (1916), 10, 539.CrossRefGoogle Scholar
(3) Carré, and Haynes, . Biochem. J. (1922), 16, 60.Google Scholar