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Secura® Analytical Balance 120 | 220 g x 0.01 | 0.1 mg

Company: Sartorius
Catalog#: SECURA225D-1OBR
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Determination of Storage (Starch/Glycogen) and Total Saccharides Content in Algae and Cyanobacteria by a Phenol-Sulfuric Acid Method
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2018-08-05
[Abstract]  This is a protocol for quantitative determination of storage and total carbohydrates in algae and cyanobacteria. The protocol is simple, fast and sensitive and it requires only few standard chemicals. Great advantage of this protocol is that both storage and total saccharides can be determined in the cellular pellets that were already used for chlorophyll and carotenoids quantification. Since it is recommended to perform the pigments measurement in triplicates, each pigment analysis can generate samples for both total saccharide and glycogen/starch content quantification.

The protocol was applied for quantification of both storage and total carbohydrates in cyanobacteria Synechocystis sp. PCC 6803, Cyanothece sp. ATCC 51142 and Cyanobacterium sp. ...
[摘要]  这是用于定量测定藻类和蓝细菌中的储存和总碳水化合物的方案。该协议简单,快速,灵敏,只需要很少的标准化学品。该方案的最大优点是可以在已经用于叶绿素和类胡萝卜素定量的细胞沉淀中测定储存和总糖。由于建议一式三份进行颜料测量,因此每种颜料分析都可以生成总糖和糖原/淀粉含量定量的样品。

该方案用于量化蓝细菌 Synechocystis sp中的储存和总碳水化合物。 PCC 6803, Cyanothece sp。 ATCC 51142和 Cyanobacterium sp。 IPPAS B-1200。它还被用于估算 Galdieria (IPPAS P-500,IPPAS P-507,IPPAS P-508,IPPAS P-513), Cyanidium caldarium IPPAS中的储存多糖P-510,绿藻小球藻 sp。 IPPAS C-1和C-1210, Parachlorella kessleri IPPAS C-9, Nannochloris sp。 C-1509, Coelastrella sp。 IPPAS H-626, Haematococcus sp。 IPPAS H-629和H-239,以及 Eustigmatos sp。 IPPAS H-242和IPPAS C-70。

【背景】碳水化合物在藻类和蓝细菌的代谢中起着许多作用。正如Raven和Beardall(Raven和Beardall,2003)所总结的那样,碳水化合物代表碳还原/氧化途径(光合作用和光呼吸)中间体的主要汇集,它们提供生长所需的骨架(例如,for氨基酸或细胞壁生物合成),它们代表ATP和还原当量的来源(通过呼吸途径),它们作为相容的溶质,它们对维持细胞膨胀是必不可少的(通过确保细胞壁的刚性结构)并且它们可以清除自由基。储存多糖(其中藻类和蓝藻中的主要形式是淀粉和糖原)作为能量和碳源,缓冲碳水化合物生产和消费率之间的不成比例,并允许活跃的新陈代谢(例如,固氮)在黑暗时期。 ...

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