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Centella asiatica has been extensively studied but there has been no report to date that relates gene expression and centelloside production in non-differentiated tissues. We have determined the content of the four principal triterpenoid bioactive compounds of C. asiatica (asiaticoside, madecass...
Synthesis of medium-chain sophorolipids by Candida bombicola is a challenging objective. One of the difficulties is that the obtained sophorolipids always represent a mixture of medium-chain and native de novo formed or long-chain sophorolipids. The fatty acid moiety of de novo sophorolipids is ...
Tissue-specific promoters are required for plant molecular breeding to drive a target gene in the appropriate location in plants. A chromoplast-specific, carotenoid-associated gene (OgCHRC) and its promoter (Pchrc) were isolated from Oncidium orchid and characterized. Northern blot analysis reve...
The reaction medium was optimized to accomplish epoxide hydrolase-catalyzed, batch enantioselective hydrolysis of racemic styrene oxide at high initial substrate concentrations. The recombinant Pichia pastoris containing the epoxide hydrolase gene of Rhodotorula glutinis was used as the biocatal...
Interactions between ectomycorrhizal fungi (Suillus laricinus, S. tomentosus, Amanita vaginata and Gomphidius viscidus) and the pathogen Rhizoctonia solani in co-culture were studied using both light and scanning electron microscopy. S. laricinus, S. tomentosus and A. vaginata inhibited the grow...
Using the optimal concentrations of octanoic acid (0.75 mM) and ethyl mercaptan (2 mM), as the most effective sulfur donor, Pseudomonas reptilivora produced 74 microg lipoic acid per dry cell weight at pH 7.5 and 30 degrees C in a fermenter over 9 h. The dry cell weight was 13.9 g l(-1).
Enzyme biofuel cells utilizing glucose dehydrogenase as an anode enzyme were constructed. The glucose dehydrogenase is composed of a catalytic subunit, an electron transfer subunit, and a chaperon-like subunit. Cells, constructed using either a glucose dehydrogenase catalytic subunit or a glucos...
The Carica papaya lipase-catalyzed acylation of benzylcarbinols with vinyl hexanoate proceeded smoothly and enantiospecifically (E > 200), affording the R-esters and leaving the S-alcohols intact. Thus, this plant lipase proved to be a promising biocatalyst for the resolution of alcohols as well...
A microbial fuel cell using aerobic microorganisms as the cathodic catalysts is described. By using anaerobic sludge in the anode and aerobic sludge in the cathode as inocula, the microbial fuel cell could be started up after a short lag time of 9 days, generating a stable voltage of 0.324 V (R ...
Pinus radiata is one of the most important forestry species in the southern hemisphere. This work describes the regeneration of this plant via somatic embryogenesis from immature zygotic embryos. To improve this process, somatic embryogenic cell suspensions were established in liquid media for t...