Latex allergy studies : Extraction of natural rubber latex proteins with reference to film thickness, latex D. R. C. and protein migration behaviour (Record no. 61978)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02483nam a2200205Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Yeang H Y |
| 245 #0 - TITLE STATEMENT | |
| Title | Latex allergy studies : Extraction of natural rubber latex proteins with reference to film thickness, latex D. R. C. and protein migration behaviour |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Journal of Natural Rubber Research |
| Year of publication | 1995 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 46-62 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Water-soluble proteins in wet natural latex films co-migrated with the evaporation stream to the surface when the film was dried at 100 C and moisture allowed to evaporate from one surface. When evaporation occurred from both surfaces of the latex film simultaneously, the evaporative pull from both directions appeared to annual each other resulting in little protein migration to either surface. Since unmigrated proteins are not readily extracted, the problem of allergenic proteins in latex films relateds essentially to the proteins that migrate to the surface. Wet-gel leaching of thin latex films (0.15 mm thick when dry) and thicker films (0.25- 0.35 mm) to remove soluble proteins was investigated by gel-leaching the films for 1-3 min with distilled water at room temperature after which they were completely dried at 100 C. Soluble proteins were reduced in thin films that were gel-leached. However, gel-leaching was counter-productive for the thicker films where extractable proteins increased. The amount of proteins extractable from latex films was also influenced by the d. r. c. of the latex used to prepare the films.Filims prepared from 40;d.r.c latex had significantly higher extractable proteins than filims of similar thickness that were prepared from 60;d.r.c. latex. Protein removal by wet-gel leaching was found not to be very effective because much of these proteins had not yet migrated to the surface when the film was heated briefly to attain the wet-gel state. When the wet-gel film was completely dried by prolonged heating after the leaching step, more proteins migrated to the surface. In the process of even brief 93 min or less) dry-film leaching, on the other hand, most of the soluble proteins had evidently migrated to the film surface at the time of leaching and their removal was hence much more effective. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Film thickness |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Latex allergy |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Latex DRC |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Natural Rubber Latex Proteins |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Protein migration |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ghazaly H M |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sunderasan E |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Serial Enumeration / chronology | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | Rubber chemistry | 17/12/2021 | Volume 10, Issue 1 | Journals |