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Composition containing alkylene oxide derivative of pectin

A kind of rubber alkylene oxide derivatives, technology of alkylene oxide derivatives, applied in the field of pectin alkylene oxide derivatives

Inactive Publication Date: 2008-10-29
CP KELCO U S INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another disadvantage of soap is the formation of insoluble lime soap in hard water

Method used

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  • Composition containing alkylene oxide derivative of pectin
  • Composition containing alkylene oxide derivative of pectin
  • Composition containing alkylene oxide derivative of pectin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] Embodiment 1: the influence of degree of esterification

[0145] The effect of the degree of esterification was evaluated by detecting the titration curves of the above-mentioned samples. Check the titration curve by the following experimental procedure:

[0146] Titration curve process:

[0147] 1. Dissolve 2 g of pectin in 200 g of deionized water at 70°C and 20°C.

[0148] 2. Place the solution in a water bath with constant temperature control at 25°C and continue stirring.

[0149] 3. 0.1M NaOH was added to the solution and the pH was recorded as a function of 0.1M NaOH added.

[0150] The results are shown in Table 2 below.

[0151] Table 2

[0152]

[0153] Figure 1 depicts the results shown in Table 2 above.

[0154] As can be seen from Figure 1, the alkali consumption (or buffer capacity) of propylene glycol pectin decreases with the total degree of esterification. This is consistent with the results for methylated pectin and propylene glycol alginate...

Embodiment 2

[0156] Example 2: Ability to Lower pH

[0157] The pH drop measurement was then used to assess the ability of the same 7 sample fractions to drop pH. The pH drop was detected by the following experimental protocol:

[0158] Procedure for Measuring pH Reduction

[0159] 1. Dissolve 1 g of pectin in 100 g of deionized water at a specific dissolution temperature.

[0160] 2. Place the solution in a thermostatically controlled water bath with constant stirring.

[0161] 3. Bring the pH between 9 and 10 by adding 0.1M NaOH.

[0162] 4. Record the pH as a function of time.

[0163] Table 3 below lists the assay results.

[0164] table 3

[0165]

[0166] Figure 3 depicts the results shown in Table 3 above.

[0167] From Figure 3, it can be seen that the pH decrease increases with the total degree of esterification. Therefore, in this respect, the performance of propylene glycol pectin is similar to that of methylated pectin and propylene glycol alginate.

[0168] Figur...

Embodiment 3

[0169] Example 3: Effect of temperature

[0170] A sample of Reaction 6 was then studied to further determine the effect of temperature during pH reduction. The detection was carried out according to the above "Procedure for determining the pH-decrease", but the temperature was maintained in two different temperature ranges: the pH reduction in step (4) was carried out in two different temperature ranges of 30-32°C and 45-47°C. The results are shown in Table 4 below.

[0171] Table 4

[0172]

[0173] Figure 5 depicts the results shown in Table 4 above.

[0174] It can be seen from Figure 5 that for the two identical samples, the pH decreases faster at high temperature. Thus, similar to methylated pectin and propylene glycol alginate, propylene glycol glycerol pectin deesterifies faster at higher temperatures, resulting in a faster decrease in pH with increasing temperature.

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Abstract

Disclosed is a skin-protecting alkalinity-controlling composition comprising an alkylene oxide derivative of pectin having a degree of esterification in the range from about 30% to about 100%.

Description

Background of the invention [0001] Pectin is a complex polysaccharide associated with plant cell walls, where pectin is most abundant in the intercellular layer of the cell wall. Pectin is produced and deposited during cell wall growth and is particularly abundant in soft plant tissues under conditions of rapid growth and high humidity. [0002] Pectin consists of an alpha 1-4 linked polygalacturonic acid backbone interspersed with rhamnose residues and modified with neutral sugar side chains and non-sugar moieties such as acetyl, methyl and ferulic acid groups . Neutral sugar side chains, including arabinan and arabinogalactose, are linked to rhamnose residues in the main chain. Rhamnose residues tend to cluster together on the backbone. [0003] The galacturonic acid residues in pectin are partially esterified and exist as methyl esters. The degree of esterification is defined as the percentage of esterified carboxyl groups. A degree of esterification (“DE”) greater tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06A01N43/04A61K9/14A23L29/20
CPCA61Q13/00A61Q19/00A61Q17/00A61Q15/00A61Q19/10A61K2800/75A61K8/73A61P17/16
Inventor J·S·楚德索J·拉森
Owner CP KELCO U S INC
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