Insights into the fatty acid profile and taxonomy of the extremophilic moss Hedwigia emodica (Bryophyta, Hedwigiales, Hedwigiaceae)
DOI:
https://doi.org/10.30550/j.lil/2092Palavras-chave:
GC-MS, LC-PUFA, mosses, ω-3-Fatty acid, quantificationResumo
Os musgos extremófilos são conhecidos por produzir uma variedade de ácidos graxos poli-insaturados de cadeia longa em resposta a vários estresses abióticos. Esses ácidos graxos ajudam na fluidez da membrana que permite sua sobrevivência em condições extremas. O presente estudo, portanto, investiga o perfil de ácidos graxos e a taxonomia de um musgo extremófilo Hedwigia emodica. A espécie foi encontrada nos bolsões da região do Himalaia do noroeste da Índia e é caracterizada por certos caracteres de identificação, como folhas retas, 0,6–0,8 mm de largura; ponta longa e pontiaguda de cabelo hialino ca. 20?40% do comprimento da folha; margens das folhas fracamente recurvadas ou planas; células medianas das folhas com papilas adaxiais simples a minimamente ramificadas; paredes celulares obscurecidas. A análise de cromatografia gasosa-espectrometria de massa revelou um total de 20 ácidos graxos diferentes, que incluem ácidos graxos saturados, monoinsaturados e poli-insaturados. O ácido ?-linolênico é encontrado nas maiores quantidades com 35,44% do total de ácidos graxos, seguido pelo ácido araquidônico com 15,05% do total de ácidos graxos. Também quantificamos esses ácidos graxos por grama de tecido de musgo. O conteúdo de ácido linolênico (ácido graxo essencial ?-3) foi o de maior valor com 5059,861±0,667 ?g/g entre todos os ácidos graxos, enquanto o ácido ?-linoleico (ácido graxo essencial ?-6) foi 1785,248±0,009 ?g/g. A quantidade de ácidos graxos poliinsaturados de cadeia longa, como ácido eicosapentaenoico e araquidônico, foi de 1026,379±0,066 e 2137,953±0,058 ?g/g, respectivamente. Nossas descobertas revelaram uma proporção significativa de ácidos graxos nutricionalmente, medicinalmente e biologicamente importantes que podem ser usados ??para fins industriais. O presente estudo é a primeira quantificação de estimativa de ácidos graxos neste táxon. Essas descobertas abrirão caminhos para a condução de pesquisas futuras no campo da bioquímica de lipídios de musgos e influência ambiental sobre ácidos graxos de musgos.
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