Evidence map›Paper›PMID 31703423›Full record

ArticleMolecules (Basel, Switzerland)2019

Methyl Ether-Derivatized Sterols and Coprostanol Produced via Thermochemolysis Using Tetramethylammonium Hydroxide (TMAH).

Masatoshi Nakakuni, Yoshimi Yamasaki, Nonoka Yoshitake, Keiko Takehara, Shuichi Yamamoto

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Molecules (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.6field-weighted citation impact, top 36% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed, 11 citations in OpenAlex.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Masatoshi NakakuniDepartment of Science and Technology, Soka University, 1-236 Tangi-machi, Hachioji City, Tokyo 192-8577, Japan.
Yoshimi YamasakiDepartment of Environmental Engineering for Symbiosis, Graduate School of Engineering, Soka University, 1-236 Tangicho, Hachioji, Tokyo 192-8577, Japan.
Nonoka YoshitakeDepartment of Environmental Engineering for Symbiosis, Graduate School of Engineering, Soka University, 1-236 Tangicho, Hachioji, Tokyo 192-8577, Japan.
Keiko TakeharaDepartment of Environmental Engineering for Symbiosis, Graduate School of Engineering, Soka University, 1-236 Tangicho, Hachioji, Tokyo 192-8577, Japan.
Shuichi YamamotoDepartment of Environmental Engineering for Symbiosis, Graduate School of Engineering, Soka University, 1-236 Tangicho, Hachioji, Tokyo 192-8577, Japan.
Soka University · JP

Funding

Japan Science Society The Sasakawa Scientific Research Grant
6 · The paper itself

Abstract

Sterols are widely distributed in nature from lipids in organisms to sediments. As a conventional method, extraction and derivatization with TMS have been applied for sterol analysis, requiring a long preparation time for gas chromatography-mass spectrometry analysis. In this study, for sterol analysis, thermochemolysis using tetramethylammonium hydroxide (TMAH) was applied. This method performs hydrolysis and methylation simultaneously; thus, free and ether-bonding sterols can be analyzed as sterol methyl ethers in a relatively short time period. A sediment sample from a tideland (the Yatsu tideland, Japan) was analyzed using the TMAH method, and we detected more than 10 sterols, which include cholest-5-en-3

Indexed as

Gas Chromatography-Mass SpectrometryCholestanolCholestenesGeologic SedimentsQuaternary Ammonium CompoundsCholestanolCholestenesdinosterolQuaternary Ammonium Compoundstetramethylammoniumcoprostanolsterolstetramethylammonium hydroxide (TMAH)thermochemolysis

Identifiers

PMID31703423
PMCPMC6928973
OpenAlexW2983896246

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.