scispace - formally typeset
Search or ask a question

Showing papers on "Gum arabic published in 1975"


Journal ArticleDOI
TL;DR: Lime was superior to rock-phosphate + dolomite in maintaining rhizobia on the pelleted seed in 1972 and in increasing the percentage of healthy plants in 1973 (1- and 16-day storage).
Abstract: The influence of two adhesives (gum arabic or methyl cellulose) and two coating materials (lime or rock-phosphate + dolomite) on both the survival of Rhizobium trifolii on the seed after inoculation and the establishment of oversown ‘Grasslands Huia’ white clover (Trifolium repens) was investigated over 2 years. With one exception (1973, 16-day storage), in which there were no significant treatment effects on the number of rhizobia per seed, gum arabic adhesive maintained higher populations of rhizobia on the pelleted seed and gave higher percentage establishment of healthy plants than methyl cellulose, after storage periods up to 16 days. Lime was superior to rock-phosphate + dolomite in maintaining rhizobia on the pelleted seed in 1972 (1-day storage) and in increasing the percentage of healthy plants in 1973 (1- and 16-day storage). Otherwise, there was no significant difference between lime and rock phosphate + dolomite. Gum arabic-lime pellets are recommended for oversown clover because they...

19 citations


Journal ArticleDOI
TL;DR: The three plant exudates gum traganth, gum arabic, and gum karaya and the two seaweed extracts carrageenan and alginate were degraded by five different Bacilli which were isolated from these gums as discussed by the authors.
Abstract: The three plant exudates gum traganth, gum arabic, and gum karaya and the two seaweed extracts carrageenan and alginate were degraded by five different Bacilli which were isolated from these gums: Bacillus coagulans, B. lentus, B. cereus, B. licheniformis, and B. firmus. After 14 days all the gums have been degraded by these Bacilli to a different extent after addition of trace elements. The fractions of degraded gums by TLC, GLC, and IR-spectroscopy have been examined with the following results: 1. Except the already known monomers of the above mentioned gums no other monosaccharides could be found. 2. The microbial degradation of gum karaya and alginate resulted in products with a high molecularweight. Monomers could not be determined. 3. Carrageenan has been degraded to oligosaccharides with molecularweights of about 500, 3,6-anhydrogalactose has been partly identified. 4. Gum arabic has been partly degraded to rhamnose and arabinose. 5. Gum traganth has been partly degraded to arabinose and xylose and partly to polysaccharides with molecularweights under 3000.

3 citations


Patent
18 Jul 1975
TL;DR: In this paper, a coacervation of gelatin and gum arabic is carried out in the presence of a thixotropic agent, which prevents excessive aggregation of the microcapsules.
Abstract: The prodn. of oil-contg. microcapsules by coacervation in a mixed soln. of gelatin and gum arabic is carried out in the presence of a thixotropic agent. The latter remains in the liq. medium throughout the process. The process is esp. useful for the prodn. of pressure-sensitive copying materials. The thixotropic agent prevents excessive aggregation of the microcapsules. The thixotropic agent is pref. a polysaccharide, e.g. "Keltrol" or "Kelzan". It should be used in an amt. of >=4 wt.% based on gelatin.

3 citations