English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The ether extract of incubated saliva (several days incubation in an aerobic condition) contains only one or two compounds, phenol or phenol and indole, as light absorbents in the ultraviolet region. This paper deals with the determination of these compounds.The optical density of the extract was proportional to the concentration of phenol or indole in the material (Figs. 9 and 10). Each 3 ml of the materials, saliva and standard solutions, was extracted with each 6 ml of ether or petroleum ether. The optical densities (O.D.) of these extracts were estimated at 2872 A in the case of petroleum ether (P.E.) and at 2730 A in the case of ether (E.). Procedures were summarized in next column. When the concentration of indole or phenol in the standard solution is 1mg/100 ml water, the content of phenol or indole in saliva can be calculated by the following equations;Indole (I): a/c mg/100 ml salivaPhenol (P): b-d·I/e mg/100 ml salivaIn this method the recovery was 99-103% (Table 7) and the relative error 1.9% (Table 8).

SIMULTANEOUS ESTIMATION OF PHENOL AND INDOLE IN THE PUTREFIED HUMAN SALIVA