scholarly journals Modeling of polygalacturonase enzyme activity and biomass production by Aspergillus sojae ATCC 20235

2009 ◽  
Vol 36 (9) ◽  
pp. 1139-1148 ◽  
Author(s):  
Figen Tokatli ◽  
Canan Tari ◽  
S. Mehmet Unluturk ◽  
Nihan Gogus Baysal
Keyword(s):  
Enzyme Activity ◽  
Biomass Production ◽  
Aspergillus Sojae

scholarly journals Effect of PHRs and PCPs on Microalgal Growth, Metabolism and Microalgae-Based Bioremediation Processes: A Review

2019 ◽  
Vol 20 (10) ◽  
pp. 2492 ◽  
Author(s):  
Krystian Miazek ◽  
Beata Brozek-Pluska
Keyword(s):  
Oxidative Stress ◽  
Enzyme Activity ◽  
Biomass Production ◽  
Value Added ◽  
Cellular Morphology ◽  
Personal Care ◽  
Microalgal Biomass ◽  
Single Process ◽  
Growth Metabolism ◽  
Bioremediation Processes

In this review, the effect of pharmaceuticals (PHRs) and personal care products (PCPs) on microalgal growth and metabolism is reported. Concentrations of various PHRs and PCPs that cause inhibition and toxicity to growths of different microalgal strains are summarized and compared. The effect of PHRs and PCPs on microalgal metabolism (oxidative stress, enzyme activity, pigments, proteins, lipids, carbohydrates, toxins), as well as on the cellular morphology, is discussed. Literature data concerning the removal of PHRs and PCPs from wastewaters by living microalgal cultures, with the emphasis on microalgal growth, are gathered and discussed. The potential of simultaneously bioremediating PHRs/PCPs-containing wastewaters and cultivating microalgae for biomass production in a single process is considered. In the light of reviewed data, the feasibility of post-bioremediation microalgal biomass is discussed in terms of its contamination, biosafety and further usage for production of value-added biomolecules (pigments, lipids, proteins) and biomass as a whole.

Polar vineyard pruning extracts increase the activity of the main ligninolytic enzymes in Lentinula edodes cultures

2007 ◽  
Vol 53 (10) ◽  
pp. 1150-1157 ◽  
Author(s):  
Citlalli Harris-Valle ◽  
Martín Esqueda ◽  
Alfonso Sánchez ◽  
Miguel Beltrán-García ◽  
Elisa M. Valenzuela-Soto
Keyword(s):  
Enzyme Activity ◽  
Biomass Production ◽  
Lentinula Edodes ◽  
Activity Patterns ◽  
Alcohol Oxidase ◽  
Ligninolytic Enzymes ◽  
Ligninolytic Enzyme ◽  
Dry Mass ◽  
Polar Extracts ◽  
The Relationship

Lentinula edodes is considered an alternative recycling agent for agricultural wastes, and there have been several studies to understand the relationship between its growth and ligninolytic activity. We tested the effect of wood from viticulture pruning, extracted with solvents of differing polarity, on the biomass production and activity pattern of ligninolytic enzymes. The analysis was done by measuring the mycelial dry mass and enzyme activity of liquid growth medium during the culture of L. edodes, adding either single extracts or a combination of extracts. Polar extracts enhanced mycelial production, and the activity patterns of lignin peroxidase, manganese peroxidase, aryl alcohol oxidase, and laccase were comparable to their activities predicted by ligninolysis models proposed for other fungi. We conclude that the polar extracts could be useful for enhancing fungal biomass production and for modifying lignin degradation because the regulation of ligninolytic enzyme activity is differentially influenced by the polarity of the extract.

scholarly journals The Effects of ZnO Nanoparticles in Combination with Alcohol on Biosynthetic Potential of Saccharomyces cerevisiae

2017 ◽  
Vol 21 (2) ◽  
pp. 19-24
Author(s):  
Natalia Chiseliţa ◽  
Agafia Usatii ◽  
Nadejda Efremova
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Protein Synthesis ◽  
Enzyme Activity ◽  
Biomass Production ◽  
Zno Nanoparticles ◽  
Yeast Strain ◽  
Culture Medium ◽  
Inhibit Protein Synthesis ◽  
Maximum Value ◽  
Directed Synthesis

Abstract This paper reports about experimental results concerning the influence of 30 nm ZnO nanoparticles on biomass, carbohydrates, β-glucans, proteins accumulation and catalase enzyme activity at Saccharomyces cerevisiae CNMN-Y-20 yeast strain exposed to alcohol action. Alcohol in concentrations of 2%, 5% and 10% added to culture medium has been reported to stimulate β-glucans biosynthesis and to inhibit protein synthesis. Low biomass production, with 71% less that control, was detected in the experiments with 10% alcohol. ZnO nanoparticles in combination with alcohol do not offer sufficient protection for the proteins biosynthesis, but efficiently protect the carbohydrates and β-glucans biosynthetic processes, which contents in the biomass are with 16.6% and 19.9% higher than control, respectively. The maximum value of β-glucans content was established in case of cultivation of selected yeast strain on YPD medium supplemented with 5 mg/L nanoparticles ZnO and 2% alcohol. The obtained results allowed the elaboration of new procedure for directed synthesis of β-glucans that contributed to an increase of this component with 30.7%, compared to control.

Morphological and biochemical analyses of changes in rat hepatocytes related to wine and ethanol consumption

1984 ◽  
Vol 42 ◽  
pp. 232-233
Author(s):  
S.M. Geyer ◽  
C.L. Mendenhall ◽  
J.T. Hung ◽  
E.L. Cardell ◽  
R.L. Drake ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Endoplasmic Reticulum ◽  
Enzyme Activity ◽  
Malic Enzyme ◽  
Smooth Endoplasmic Reticulum ◽  
Rat Hepatocytes ◽  
Mature Male ◽  
Treatment Groups ◽  
Malic Enzyme Activity ◽  
Biochemical Analyses

Thirty-three mature male Holtzman rats were randomly placed in 3 treatment groups: Controls (C); Ethanolics (E); and Wine drinkers (W). The animals were fed synthetic diets (Lieber type) with ethanol or wine substituted isocalorically for carbohydrates in the diet of E and W groups, respectively. W received a volume of wine which provided the same gram quantity of alcohol consumed by E. The animals were sacrificed by decapitation after 6 weeks and the livers processed for quantitative triglycerides (T3), proteins, malic enzyme activity (MEA), light microscopy (LM) and electron microscopy (EM). Morphometric analysis of randomly selected LM and EM micrographs was performed to determine organellar changes in centrilobular (CV) and periportal (PV) regions of the liver. This analysis (Table 1) showed that hepatocytes from E were larger than those in C and W groups. Smooth endoplasmic reticulum decreased in E and increased in W compared to C values.

Enzyme Activity in Gastric Juice in Diagnosis of Gastric Carcinoma

1964 ◽  
Vol 46 (2) ◽  
pp. 239-240
Author(s):  
Leon Schif
Keyword(s):  
Enzyme Activity ◽  
Gastric Carcinoma ◽  
Gastric Juice

Reductive light activation of enzyme activity

2000 ◽  
Vol 110 (3) ◽  
pp. 295-295
Author(s):  
Louise Anderson ◽  
Per Gardestrom
Keyword(s):  
Enzyme Activity ◽  
Light Activation
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