Evidence map›Paper›PMID 28300791›Full record

ArticlePharmaceuticals (Basel, Switzerland)2017

Anacardic Acid Constituents from Cashew Nut Shell Liquid: NMR Characterization and the Effect of Unsaturation on Its Biological Activities.

Selene M Morais, Katherine A Silva, Halisson Araujo, Icaro G P Vieira, Daniela R Alves, Raquel O S Fontenelle, Artur M S Silva

Open access · goldAbstract read
In one paragraph

Article in Pharmaceuticals (Basel, Switzerland), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
11.4field-weighted citation impact, top 1% 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

30 citing papers in PubMed, 105 citations in OpenAlex.

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  12. Metabolites · 2024
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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

7 authors at 3 institutions in 2 countries.

Selene M MoraisChemistry Course, Master Course in Natural Resources, University of Ceará State, Fortaleza, CE, Brazil. selenemaiademorais@gmail.com.
Katherine A SilvaChemistry Course, Master Course in Natural Resources, University of Ceará State, Fortaleza, CE, Brazil. katheasilva@hotmail.com.
Halisson AraujoChemistry Course, Master Course in Natural Resources, University of Ceará State, Fortaleza, CE, Brazil. halisson.araujo@gmail.com.
Icaro G P VieiraPost-Graduation Course in Biotechnology, University of Ceará State, Fortaleza, CE, Brazil. icarogpv@uol.com.br.
Daniela R AlvesPost-Graduation Course of Veterinary Sciences, University of Ceará State, Fortaleza, CE, Brazil. alves.danielaribeiro@gmail.com.
Raquel O S FontenelleCurso de Ciências Biológicas, Universidade Estadual Vale do Acaraú, Sobral, CE, Brazil. raquelbios@yahoo.com.br.
Artur M S SilvaDepartment of Chemistry & QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal. artur.silva@ua.pt.
Universidade Estadual do Ceará · BRState University of Vale do Acaraú · BRUniversity of Aveiro · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Anacardic acids are the main constituents of natural cashew nut shell liquid (CNSL), obtained via the extraction of cashew shells with hexane at room temperature. This raw material presents high technological potential due to its various biological properties. The main components of CNSL are the anacardic acids, salicylic acid derivatives presenting a side chain of fifteen carbon atoms with different degrees of unsaturation (monoene-15:1, diene-15:2, and triene-15:3). Each constituent was isolated by column chromatography using silica gel impregnated with silver nitrate. The structures of the compounds were characterized by nuclear magnetic resonance through complete and unequivocal proton and carbon assignments. The effect of the side chain unsaturation was also evaluated in relation to antioxidant, antifungal and anticholinesterase activities, and toxicity against Artemia salina. The triene anacardic acid provided better results in antioxidant activity assessed by the inhibition of the free radical 1,1-diphenyl-2-picrylhydrazyl (DPPH), higher cytotoxicity against A. salina, and acetylcholinesterase (AChE) inhibition. Thus, increasing the unsaturation of the side chain of anacardic acid increases its action against free radicals, AChE enzyme, and A. salina nauplii. In relation to antifungal activity, an inverse result was obtained, and the linearity of the molecule plays an important role, with monoene being the most active. In conclusion, the changes in structure of anacardic acids, which cause differences in polarity, contribute to the increase or decrease in the biological activity assessed.

Indexed as

anacardic acidsAnacardium occidentalecashew nut shell liquid

Identifiers

PMID28300791
PMCPMC5374435
OpenAlexW2596732292

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.