Chemical characterization of the soluble polysaccharides of the red alga Acanthophora spicifera from La Paz Bay, Baja California Sur, México

IF 0.5 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Ciencias Marinas Pub Date : 2020-09-30 DOI:10.7773/CM.V46I3.3090

Valérie Chantal Gabrielle Schnoller, G. Hernández-Carmona, E. Hernández-Garibay, J. López-Vivas, M. Muñoz-Ochoa

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引用次数: 3

Abstract

espanol"Acanthophora spicifera" es un alga roja invasiva que recientemente fue detectada en la bahia de La Paz, Baja California Sur, Mexico, donde se ha desarrollado en grandes biomasas. Debido a que es una nueva especie en la region, se desconocen las caracteristicas y las propiedades de los polisacaridos solubles (PS) que contiene . Con el proposito de determinar el contenido, la composicion quimica y las propiedades de los PS de A. spicifera, durante el ano 2013, se realizaron muestreos mensuales en punta Roca Caimancito en la bahia de La Paz, y se extrajeron y caracterizaron los PS nativos y los PS con tratamiento alcalino. El tratamiento alcalino redujo el rendimiento y modifico la composicion de los PS de A. spicifera. Los polisacaridos obtenidos antes o despues del tratamiento alcalino fueron de baja viscosidad y no gelificaron. En concordancia con los resultados obtenidos, la razon molar de los componentes (galactosa, 3,6-anhidrogalactosa, sulfatos [Gal:3,6-AG:sulfatos]) para los polisacaridos nativos (1.00:0.30:0.23) y los polisacaridos con tratamiento alcalino (1.00:0.30 :0.17) mostro que los PS de A. spicifera poseen una menor proporcion de sulfatos que la que corresponde a los polisacaridos que pertenecen a los carragenanos, pero mayor que la que corresponde a los polisacaridos pertenecientes al agar verdadero. Los espectros obtenidos de la espectrometria infrarroja con transformada de Fourier de los PS mostraron senales caracteristicas para galactanos sulfatados, con la presencia de acido piruvico; despues del tratamiento alcalino, se observaron senales caracteristicas para polisacaridos del tipo agar (agaroideo). Aunque los polisacaridos de A. spicifera no tienen propiedades gelificantes, es necesario realizar estudios adicionales para determinar la estructura de los PS que contiene esta especie con el proposito de encontrar usos apropiados para este recurso. English"Acanthophora spicifera" is an invasive red alga that was recently detected in La Paz Bay, Baja California Sur, Mexico, where it has developed into a large biomass. Because it is a new species in the region, the characteristics and properties of the soluble polysaccharides (SPs) that it contains are unknown. To determine the content, chemical composition, and properties of SPs in A. spicifera, monthly samplings were carried out in 2013 at Point Roca Caimancito in La Paz Bay, and native and alkali-treated polysaccharides were extracted and characterized. The alkaline treatment produced lower yields and modified the composition of A. spicifera SPs. The polysaccharides obtained before or after the alkaline treatment had low viscosity and did not have gelling properties. In line with the obtained results, the molar ratio of components (galactose, 3,6-anhydrogalactose, sulfates [Gal:3,6-AG:sulfates ]) for native (1.00:0.30:0.23) and alkali-treated (1.00:0.30:0.17) polysaccharides showed that A. spicifera SPs have a lower proportion of sulfates than that in polysaccharides belonging to carrageenans but greater than that in polysaccharides belonging to true agar. The Fourier-transform infrared spectra of SPs showed characteristic signals for sulfated galactans, with the presence of pyruvic acid; after the alkaline treatment, characteristic signals for agar-type polysaccharid es (agaroid) were observed. Although A. spicifera polysaccharides have no gelling properties, additional studies are needed to clarify the structure of the SPs it contains to find appropriate uses for this resource.

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下加利福尼亚拉巴斯湾红藻棘藻(Acanthophora spicifera)可溶性多糖的化学性质

“Acanthophora spicifera”是一种入侵的红色藻类，最近在墨西哥南下加利福尼亚的拉巴斯湾发现，在那里它已经发展成大型生物质体。由于它是该地区的一个新种，其可溶性多糖(PS)的特性和性质尚不清楚。目的确定内容、composicion a的化学物质和财产dw spicifera肛门2013年期间,每月进行取样点摇滚Caimancito在bahia的和平,进行钻孔和特点,dw当地人和dw处理碱性。碱性处理降低了spicifera的产量，改变了sp的组成。碱性处理前后得到的多糖粘度低，未凝胶化。符合组件的成果,是对的臼齿(乳糖、3,6-anhidrogalactosa硫酸盐加3,6-AG:硫酸盐)(原生polisacaridos 1.00:0.30:0.23)和碱治疗(1.00:0.30 polisacaridos: a . spicifera 0.17)表现出dw具有较低比例的硫酸盐符合polisacaridos属于carragenanos,但高于polisacaridos属于agar真正拥有。傅里叶变换红外光谱法得到的PS光谱显示了丙酮酸存在下半乳糖硫酸盐的特征信号;碱性处理后，琼脂型多糖(琼脂糖)有特征信号。虽然spicifera多糖没有胶凝特性，但为了找到这种资源的适当用途，还需要进一步的研究来确定该物种所含PS的结构。“棘藻”是一种入侵的红藻，最近在墨西哥下加利福尼亚的拉巴斯湾被发现，在那里它发展成为一种大型生物群落。由于它是该地区的一个新种，它所含的可可性多糖(SPs)的特性和性质尚不清楚。2013年，在拉巴斯湾的Point Roca Caimancito采集了一个月的样品，并对天然和碱处理的多糖进行了提取和鉴定。= =地理= =根据美国人口普查，该地区的总面积为，其中土地和(1.1%)水。= =地理= =根据美国人口普查，这个县的面积为，其中土地面积为，其中土地面积为。In line with the获得成果,《components的摩尔比例(galactose 3,6-anhydrogalactose, sulfates[加:3,6-AG sulfates]) for native(1.00:0.30:0.23)和alkali-treated (1.00:0.30:0.17) polysaccharides显示a . spicifera SPs低有比例sulfates than that In polysaccharides carrageenans应but greater than that In polysaccharides true应琼脂。显示存在pyruvic酸的硫酸半乳糖的SPs特征信号的傅里叶变换红外光谱;碱性处理后，观察到琼脂型多糖es(琼脂类)的特性信号。虽然spicifera多糖没有凝胶特性，但需要进一步的研究来澄清它所包含的SPs的结构，以找到该资源的适当用途。

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来源期刊

Ciencias Marinas 生物-海洋与淡水生物学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： A bilingual open-access publication, Ciencias Marinas (CM) is an international peer-reviewed journal that contains original research findings in all areas of marine science. It is published quarterly by the Autonomous University of Baja California, Mexico, and all its contents are publicly available on our journal website. Though a limited number of copies are still printed, the journal is mainly distributed in its electronic format. CM was conceived in 1973 as part of an academic project aimed to entice local researchers to publicly disclose their findings by adopting the culture of peer-review publishing. This academic project evolved into an international journal after accepting papers from researchers in the United States and, eventually, other parts of the world. Because of the diversity in authorship, CM issues were initially published in either Spanish or English, and occasionally in both languages. It was not until 1984 when CM included both language versions of all its contents, and it then became the fully bilingual journal it still is today. At CM we believe our inclusive format allows us not only to address a wider range of submissions from international authors but also to make published findings available to a wider international audience. So whether you are looking for information on the redfish in Icelandic waters or the physical and biological properties of the Gulf of California, feel free to peruse CM contents. You may find them to provide source material for your research.