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53 articles for “Enzymatic Activity”
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Research ArticleOpen accessPhrase in the titleStatus of Soil Microbial Population, Enzymatic Activity and Biomass of Selected Natural, Secondary and Rehabilitated ForestsK. S. Daljit Singh, A. Arifin, O. Radziah et al.Substantial clearance of forests and conversion of forest into various land use types contribute to deterioration of soil fertility and associated nutrients loss. Soils from natural and rehabilitated forest in Chikus Forest Reserve and also enrichment planting forest and secondary forest of Tapah Hill Forest Reserve, Perak, Malaysia were selected in order to assess the influence of land use change … …American Journal of Environmental Sciences, Vol. 9, Issue 4 · 28 Aug 2013 · 7,803 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleEffect of Heavy Metals on the Enzymatic Activity of Haplic Chernozem under Model Experimental ConditionsNatalia Gromakova, Saglara Mandzhieva, Tatiana Minkina et al.The biological activity of soils is an essential parameter of their ecological status. The anthropogenic Heavy Metals (HMs) disturb the normal functioning of soil biota and, hence, the entire soil system. The aim of this work was to estimate the toxicity of loosely bound HM compounds in Haplic Chernozem using parameters of cellulose-degrading and urease activities. Contamination of Haplic Chernozem … …OnLine Journal of Biological Sciences, Vol. 17, Issue 3 · 23 Jul 2017 · 7,994 accessesView PDFCite
Research ArticleOpen accessIn the keywordsCyclodextrin Glucanotransferase Activity of Microbial Strains Isolated from Yam-Cultivation Soils in Northwestern BeninCyrille Alode Vodounon, Ténor Dias-Mendel Allode et al.β-Cyclodextrin, an industrially important oligosaccharide, is produced by microbial enzymes such as cyclodextrin glucanotransferase (CGTase). This study investigated ways to optimize the enzymatic activity of CGTase from Bacillus cereus, Bacillus pumilus, Bacillus brevis, and Bacillus subtilis strains isolated from soils in north-western Benin. Cyclization activity of CGTase and the influence of pH, temperature, and metal ions were assessed using conventional … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 3 · 21 Sep 2026 · 652 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAssessing Soil Biological Properties of Natural and Planted Forests in the Malaysian Tropical Lowland Dipterocarp ForestDaljit Singh Karam, Arifin Abdu, O. Radziah et al.Problem statement: A study was conducted to evaluate and compare the soil biological properties of a natural forest and an 18-year-old stand of Shorea leprosula in Chikus Forest Reserve, Perak, Malaysia. Approach: Soils were sampled at depths of 0-15 cm (topsoil) and 15-30 cm (subsoil) in six subplots (20×20 m) of natural forest (C1) and of a planted S. leprosula … …American Journal of Applied Sciences, Vol. 8, Issue 9 · 29 Jul 2011 · 7,961 accessesView PDFCite
Research ArticleOpen accessIn the keywordsCellulolytic Enzymes Production by Solid State Culture Using Pecan Nut Shell as Substrate and SupportMiguel A. Medina-Morales, José L. Martínez-Hernández, Heliodoro de la Garza, Cristóbal Noé AguilarProblem Statement: Great interest in the use of lignocellulosic biomass is increasing in order to diminish the accumulation of residues, such as pecan nut shells. One of the alternatives is the fungal degradation of these residues. Approach: The capacity of Trichoderma (coded as T1, T2 and T3) strains to produce cellulase and xylonite was evaluated. Results: Pecan nut shell fibers … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 2 · 6 Jun 2011 · 8,023 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Effect of Different Functional Microbial Agents on the Biological Characteristics and Rhizosphere Enzyme Activity of Hydroponic CucumberCe Wang, Ouya Zhao, Shiyou Sun et al.This study aims to comprehensively explore the effect of functional microbial agents on healthy soil cultivation and attempt to increase cucumber yield. Three different microbial agents were used for cucumber seedlings by virtue of the hydroponic cultivation method in order to study their effects on enzyme activity and seedling growth and reveal the relationship between rhizosphere enzyme activity and carbon, … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 1 · 24 Mar 2025 · 5,510 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOptimization of Hydrolysis Conditions for Obtaining Antithrombotic Peptides from Tenebrio Molitor LarvaeFangyuan Chen, Han Jiang, Yini Gan et al.Tenebrio molitor larvae was hydrolyzed by pepsin and trypsin for preparing high antithrombotic activity hydrolysate. The significant variables were selected according to the Plackett-Burman design and further optimized by the Response Surface Methodology (RSM). Four factors, including substrate concentration, pepsin digestion time, pepsin amount and trypsin amount, respectively, influenced significantly on the hydrolysis effectiveness. The best hydrolysis conditions obtained using … …American Journal of Biochemistry and Biotechnology, Vol. 15, Issue 2 · 20 May 2019 · 8,722 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOptimization of Enzymatic Hydrolysis of Freeze-Dried Sea Cucumber Powder with Response Surface Methodology and Its Antioxidant EvaluationYahui Pang, Jianfeng Sun, Qian LiuIn this study, freeze-dried sea cucumber powder was used as raw material and the preparation processing conditions were studied for hydrolysis of sea cucumber powder with neutral protease using Response Surface Methodology (RSM) to obtain a high concentration of sea cucumber polypeptide. The effects of hydrolysis temperature, pH, enzyme dosage and hydrolysis time on the degree of hydrolysis (DH) were … …American Journal of Biochemistry and Biotechnology, Vol. 12, Issue 4 · 17 Oct 2016 · 7,431 accessesView PDFCite
Research ArticleOpen accessIn the keywordsIsolation of Amylolytic Bacteria from Viscera of Labeo rohita (Ham.) and Optimization of Alpha Amylase ExtractionDebabrat Baishya, Hridip Kumar SarmaProblem statement: Fish is largely consumed in the north-eastern part of India resulting in the generation of huge amount of fish viscera in the market places. These waste generated is not properly managed for disposal. Under such circumstances it is necessary to properly utilize this waste regenerating the possibility of environment friendly disposal. Besides, industrially and commercially useful biological products … …Current Research in Microbiology, Vol. 1, Issue 2 · 31 May 2011 · 8,051 accessesView PDFCite
Research ArticleOpen accessIn the abstractInfluence of Sturgeon Protein Fractions on Active Peptide Generation via Enzymatic HydrolysisMengjie Lu, Yingmei Hou, Yejing Sun et al.To identify the sturgeon protein component responsible for generating bioactive peptides, including antioxidant peptides and alcohol dehydrogenase (ADH) promoting peptides, sturgeon protein and its isolated protein components (sarcoplasmic, myofibrillar, and stromal proteins) were studied. Among the four isolated protein components, stromal protein demonstrated the highest susceptibility to enzymatic hydrolysis (P<0.05). Besides, pepsin and alkaline protease are the most effective enzymes … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 1 · 8 Apr 2026 · 1,419 accessesView PDFCite