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Concentrator plus

集中器加

Company: Eppendorf
Catalog#: Concentrator plus
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Determination of Storage (Starch/Glycogen) and Total Saccharides Content in Algae and Cyanobacteria by a Phenol-Sulfuric Acid Method
Author:
Date:
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。 ...

Xanthoferrin Siderophore Estimation from the Cell-free Culture Supernatants of Different Xanthomonas Strains by HPLC
Author:
Date:
2017-07-20
[Abstract]  Xanthomonads can scavenge iron from the extracellular environment by secreting the siderophores, which are synthesized by the proteins encoded by xss (Xanthomonas siderophore synthesis) gene cluster. The siderophore production varies among xanthomonads in response to a limited supply of iron where Xanthomonas campestris pv. campestris (Xcc) produces less siderophores than Xanthomonas oryzae pv. oryzae (Xoo) and Xanthomonas oryzae pv. oryzicola (Xoc). Siderophore production can be measured by HPLC and with the CAS (Chrome azurol S)-agar plate assay, however HPLC is a more accurate method over CAS-agar plate assay ... [摘要]  黄单胞菌属可以通过分泌铁载体来从细胞外环境中清除铁,这些铁载体由由xss 编码的蛋白质(anthomonas 基因簇。 由于Xanthomonas campestris pv的铁供应有限,铁载体生产因黄托曼德而异。 野蓟菊(Xcc)产生比黄单胞菌(Xanthomonas oryzae)pv更少的铁载体。 米曲霉(Xoo)和黄单胞菌Xanthomonas oryzae pv。 oryzicola(Xoc)。 铁载体生产可以通过HPLC和CAS测量( Chrome azurol S )标准板测定,然而HPLC是在Xanthomonads中用于铁氰菊酯定量的CAS-琼脂平板测定的更准确的方法。 在这里我们描述如何使用高效液相色谱来量化黄单胞菌中的铁载体。
【背景】细菌植物病原体 Xanthomonas 具有(α-羟基羧酸盐型铁载体;类似于弧菌铁蛋白)和编码参与铁载体介导的铁吸收的外膜受体(Pandey和Sonti)所需的操纵子,2010; ...

Maize Endosperm Protein Extraction and Analysis
Author:
Date:
2013-07-20
[Abstract]  Alcohol-solubility is the most characteristic feature of the zein proteins, the major storage protein in maize. Using sodium borate buffer system with added reducing agent, total proteins are isolated, and zein proteins are separated from non-zein proteins. The extraction effect is intuitive on a SDS-PAGE isolation system. In addition, a simple and rapid approach to extract zeins is introduced, taking full advantage of alcohol-solubility of zeins directly. [摘要]  醇溶解度是玉米蛋白(玉米中主要的储存蛋白)的最具特征性的特征。 使用添加了还原剂的硼酸钠缓冲系统,分离总蛋白,并将玉米醇溶蛋白与非玉米醇溶蛋白分离。 在SDS-PAGE分离系统上提取效果是直观的。 此外,提出了一种简单和快速的方法提取玉米醇溶蛋白,充分利用酒精溶解性的玉米醇溶液直接。

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