Evidence map›Paper›PMID 31728706›Full record

ArticleMarine biotechnology (New York, N.Y.)2020

Trivalent Iron Is Responsible for the Yellow Color Development in the Nacre of Akoya Pearl Oyster Shells.

Makoto Kakinuma, Ko Yasumoto, Michio Suzuki, Chiaki Kasugai, Mirai Koide, Kayo Mitani, Kaho Shidoji, Shigeharu Kinoshita, Fumihiro Hattori, Kaoru Maeyama and 3 more

Abstract read
PubMed Publisher
In one paragraph

Article in Marine biotechnology (New York, N.Y.), 2020. 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
0.5field-weighted citation impact, top 38% 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, 10 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

13 authors at 6 institutions in 1 country.

Makoto KakinumaGraduate School of Bioresources, Mie University, 1577 Kurima-machiya, Tsu, Mie, 514-8507, Japan. kakinuma@bio.mie-u.ac.jp.ORCID http://orcid.org/0000-0003-3325-9791
Ko YasumotoSchool of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0373, Japan.
Michio SuzukiGraduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo, 113-8657, Japan.
Chiaki KasugaiGraduate School of Bioresources, Mie University, 1577 Kurima-machiya, Tsu, Mie, 514-8507, Japan.
Mirai KoideGraduate School of Bioresources, Mie University, 1577 Kurima-machiya, Tsu, Mie, 514-8507, Japan.
Kayo MitaniGraduate School of Bioresources, Mie University, 1577 Kurima-machiya, Tsu, Mie, 514-8507, Japan.
Kaho ShidojiSchool of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0373, Japan.
Shigeharu KinoshitaGraduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo, 113-8657, Japan.
Fumihiro HattoriResearch and Development Department, Mikimoto Pharmaceutical Co., Ltd., 1425 Kurose, Ise, Mie, 516-8581, Japan.
Kaoru MaeyamaResearch and Development Department, Mikimoto Pharmaceutical Co., Ltd., 1425 Kurose, Ise, Mie, 516-8581, Japan.
Masahiko AwajiNational Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, 422-1 Nakatsuhamaura, Minami-ise, Mie, 516-0193, Japan.
Kiyohito NagaiPearl Research Laboratory, Mikimoto Co., Ltd., 923 Hazako-osaki, Hamajima, Shima, Mie, 517-0403, Japan.
Shugo WatabeSchool of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0373, Japan.
Mie University · JPKitasato University · JPThe University of Tokyo · JPWakamoto Pharmaceutical (Japan) · JPJapan Fisheries Research and Education Agency · JPPearl Science Laboratory · JP

Funding

Japan Society for the Promotion of Science JP17K19282Japan Society for the Promotion of Science JP23658169Japan Society for the Promotion of Science JP26292108
6 · The paper itself

Abstract

The gold and cream colors of cultured Akoya pearls, as well as natural yellow nacre of pearl oyster shells, are thought to arise from intrinsic yellow pigments. While the isolation of the yellow pigments has been attempted using a large amount of gold pearls, the substance concerned is still unknown. We report here on the purification and characterization of yellow pigments from the nacre of Akoya pearl oyster shells. Two yellow components, YC1 and YC2, were isolated from the HCl-methanol (HCl-MeOH) extract from nacreous organic matrices obtained by decalcification of the shells with ethylenediaminetetraacetic acid (EDTA). Energy-dispersive X-ray and infrared spectroscopy analyses suggested that YC1 and YC2 precipitated under basic conditions are composed of Fe-containing inorganic and polyamide-containing organic compounds, respectively. YC1 solubilized under acidic conditions exhibited positive reactions to KSCN and K

Indexed as

AnimalsAnimal ShellsColorIron CompoundsNacrePigmentationPinctadaIron CompoundsNacreAkoya pearlColor developmentIronNacrePearl oyster shellPinctada fucata

Identifiers

PMID31728706
OpenAlexW2985315718

What OpenQuestion holds

Textmetadata
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.