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Rattana Jariyaboon, Sompong O-Thong, Prawit Kongjan
Anaerobic digestion by two-stage process, containing hydrogen-producing (acidogenic) first stage and methanogenic second stage, has been proposed to degrade substrates which are difficult to be treated by single stage anaerobic digestion process. This research was aimed to evaluate the bio-hydrogen and the bio-methane potentials (BHP and BMP) of skim latex serum (SLS) by using sequential batch hydrogen and methane cultivations at thermophilic conditions (55°C) and with initial SLS concentrations of 37.5-75...
December 2015: Bioresource Technology
A Carmel, E Kessler, A Yaron
Fluorogenic oligopeptide derivatives of the type Lys(ABz)-ONBzl, where ABz iso-aminobenzoyl (anthraniloyl), X stands for Ala Phe, or Ala-Ala, and ONBzlis p-nitrobenzyloxy, were synthesized and shown to be hydrolyzed by leucine aminopeptidase. The hydrolysis is accompanied by an increase in fluorescence due to disruptionof the intramolecular quenching of the fluorescent anthraniloyl moiety by the nitrobenzyester group. The spectral characteristics of the compounds are not consistent withan energy transfer mechanism according to Förster, therefore the quenching isassumed to be caused by a direct encouter between the quenching and the fluorecentgroups...
March 1, 1977: European Journal of Biochemistry
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