ELIZA

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657704 occurrences (No.10 in the rank) during 5 years in the PubMed. [cache]

450) The relationship of H2 production with H(+) transport across the membrane and membrane-associated ATPase activity is shown.

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PMID:23895041 DOI:10.3109/07388551.2013.809047

2015 Critical reviews in biotechnology

* Mechanisms for hydrogen production by different bacteria during mixed-acid and photo-fermentation and perspectives of hydrogen production biotechnology.

- H2 has a great potential as an ecologically-clean, renewable and capable fuel. It can be mainly produced via hydrogenases (Hyd) by different bacteria, especially Escherichia coli and Rhodobacter sphaeroides. The operation direction and activity of multiple Hyd enzymes in E. coli during mixed-acid fermentation might determine H2 production; some metabolic cross-talk between Hyd enzymes is proposed. Manipulating the activity of different Hyd enzymes is an effective way to enhance H2 production by E. coli in biotechnology. Moreover, a novel approach would be the use of glycerol as feedstock in fermentation processes leading to H2 production. Mixed carbon (sugar and glycerol) utilization studies enlarge the kind of organic wastes used in biotechnology. During photo-fermentation under limited nitrogen conditions, H2 production by Rh. sphaeroides is observed when carbon and nitrogen sources are supplemented. The relationship of H2 production with H(+) transport across the membrane and membrane-associated ATPase activity is shown. On the other hand, combination of carbon sources (succinate, malate) with different nitrogen sources (yeast extract, glutamate, glycine) as well as different metal (Fe, Ni, Mg) ions might regulate H2 production. All these can enhance H2 production yield by Rh. sphaeroides in biotechnology Finally, two of these bacteria might be combined to develop and consequently to optimize two stages of H2 production biotechnology with high efficiency transformation of different organic sources.

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[frequency of next (right) word to associated]

(1)421 with	(4)3 sequence,	(7)2 environmental	(10)2 renal
(2)5 risk	(5)3 sequences	(8)2 microorganisms
(3)5 sequence	(6)2 and	(9)2 neurological

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--- WordNet output for associated --- Overview of verb associate The verb associate has 3 senses (first 3 from tagged texts) 1. (25) associate, tie in, relate, link, colligate, link up, connect -- (make a logical or causal connection; "I cannot connect these two pieces of evidence in my mind"; "colligate these facts"; "I cannot relate these events at all") 2. (3) consort, associate, affiliate, assort -- (keep company with; hang out with; "He associates with strange people"; "She affiliates with her colleagues") 3. (1) consociate, associate -- (bring or come into association or action; "The churches consociated to fight their dissolution") --- WordNet end ---