Abstract

This study aimed to investigate the amino acids contents of some brown (Hormophysa cuneiformis, Sargassum muticum, and Padina minor), red (Digenea simplex, Amphiroa anceps, and Corallina mediterranea), and green macroalgae (Codium elongatum, Ulva fasciata, and Cladophora sp.) collected from the Egypt coasts, using an Eppendorf/Biotronik LC 3000 amino acid analyzer. The results showed that the total amino acid content ranged from 11.84 ± 0.55 mg/g dry weight (DW) in D. simplex to 33.43 ± 1.29 mg/g DW in U. fasciata. Threonine and L-methionine were the major essential amino acids (EAAs) in red and brown macroalgae, respectively, whereas in green macroalgae, the major EAAs varied between macroalgae species as follows: L‑lysine in C. elongatum, L-leucine in U. fasciata, and L-valine in Cladophora sp. L-aspartic and L-glutamic acids together represented a large portion of the amino acid content. The high content of EAAs in all the species under study makes them an important resource for nutritional applications.

中文翻译：

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一些海洋大型藻类作为新型天然氨基酸来源的营养重要性的比较研究

摘要

这项研究旨在调查一些棕色（Hormophysa cuneiformis，Sargassum muticum和Padina minor），红色（Digenea simplex，Amphiroa anceps和Corallina mediterranea）和绿色大型藻类（Codium elongatum，Ulva fasciata和Cladophora sp ）的氨基酸含量。。）使用Eppendorf / Biotronik LC 3000氨基酸分析仪从埃及沿岸收集。结果表明，总氨基酸含量范围为单枝D的11.84±0.55 mg / g干重（DW）至筋膜U的33.43±1.29 mg / g DW 。。苏氨酸和L-甲硫氨酸是主要的必需氨基酸（必需氨基酸）在红色和棕色海藻，分别，而在绿色海藻，巨藻物种之间变化的主要兴奋性氨基酸如下：L-赖氨酸在C.麦草，L-亮氨酸在ù 。fasciata，和L-缬氨酸的刚毛藻属。L-天冬氨酸和L-谷氨酸一起占氨基酸含量的很大一部分。在所研究的所有物种中，EAA含量很高，使其成为营养应用的重要资源。