122 articles for “3-[(5-Hydroxy-3-6”

Research ArticleOpen accessEvery word in the titleSurface Bioactivity of Sol Gel Derived 3Y-TZP Bioinert Ceramic through Hydroxylation Technique Using 5M H3PO4R. Velmurugan, S. Kanagesan, S. Jesurani, T. KalaivaniProblem statement: This study presented bone like apatite formation on yttria stabilized zirconia in Simulated Body Fluid (SBF) through hydroxylation technique. Approach: Sol gel route was used to prepare yttria stabilized zirconia. Then it was hydroxylated with 5M H3PO4 for formation of Zr-OH group. Moreover, the growth rate of calcium and phosphate on zirconia substrate was examined using simulated body … …American Journal of Applied Sciences, Vol. 7, Issue 3 · 31 Mar 2010 · 7,244 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleDevelopment of Cell-Responsive Nanophase Hydroxyapatite for Tissue EngineeringR. Murugan, S. RamakrishnaScaffold plays a critical role in engineering bone tissues by providing necessary structural support for the cells to accommodate and guiding their growth in the three dimensional (3D) space. Therefore, designing scaffold that mimic composition and structural aspects of the bone is of great importance to promote cell adhesion, cell-matrix interactions, osteointegration, tissue formation and continued function. Nanophase hydroxyapatite (HA) … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 3 · 30 Sep 2007 · 7,163 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleEffect of Hydroxylated Compounds on Properties and Emission of Palm BiodieselRoila Awang, Choo Yuen MayThe Malaysian Palm Oil Board (MPOB) attempted the search for a viable alternative fuel leading to a possible substitution to the conventional diesel since 1982, using palm oil derived fuel. Numerous studies have shown that most exhaust emission encountered with conventional diesel fuel are reduced with biodiesel,with the exception of nitrogen oxides (NOx). This paper is reported on the effect … …American Journal of Applied Sciences, Vol. 4, Issue 2 · 28 Feb 2007 · 7,144 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleInduced Microcracking Affects Osteoblast Attachment on Hydroxyapatite Scaffolds for Tissue EngineeringIan O. Smith, Melissa J. Baumann, Eldon D. CaseBone microdamage caused by routine activity plays an important role in triggering targeted and nontargeted bone remodeling. Targeted remodeling occurs near localized areas of microdamage[1-4]. We hypothesize that bone remodeling may be directly and positively influenced by inducing microcracks in hydroxyapatite (HA) scaffolds for bone tissue engineering. A study by Case et al. showed microcracking in HA discs having >98% … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 3 · 30 Sep 2006 · 6,557 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleStatic and Dynamic Mechanical Behavior of Hydroxyapatite-Polyacrylic Acid Composites Under Simulated Body FluidKalpana S. Katti, Phanikumar Turlapati, Devendra Verma et al.In this work, we have investigated mechanical response of hydroxyapatite/polyacrylic composites under dry, wet and simulated body fluid conditions. Hydroxyapatite (HAP) is mineralized under two conditions; one, in presence of polyacrylic acid (in situ HAP), second, in absence of polyacrylic acid (ex situ HAP). Further, in situ and ex situ HAP are mixed with polyacrylic acid to make HAP/PAAc composites. … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 2 · 30 Jun 2006 · 7,395 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleHydrogen Peroxide Biosensor Based on the Direct Electrochemistry of Myoglobin Immobilized in Poly-3-Hydroxybutyrate FilmXiang Ma, Rongwu Yang, Genxi LiDirect electrochemistry of myoglobin (Mb) was observed in a stable film composed of a natural lipid polymer (poly-3-hydroxybutyrate) and Mb, the film of which was modified on a pyrolytic graphite electrode. The apparent formal potential of Mb was at about -260 mV in an acetate buffer solution with pH 5.0. Moreover, Mb in the polymer film exhibited catalytic activity towards … …American Journal of Biochemistry and Biotechnology, Vol. 1, Issue 1 · 31 Mar 2005 · 6,872 accessesView PDF Cite

Research NotesOpen accessEvery word in the titleSubcellular Localization Studies of Three Phenylalanine Ammonia-Lyases and Cinnamate 4-Hydroxylase from Scutellaria Baicalensis Using GFP Fusion ProteinsNam Il Park, Hui Xu, Mariadhas Valan Arasu et al.The localization of three phenylalanine ammonia-lyases (PAL1, -2 and -3) and Cinnamate 4-Hydroxlase (C4H) of Scutellaria baicalensis was examined in onion epidermal cells. These genes encode key enzymes in the phenylpropanoid pathway for the synthesis of flavones. In our previous research, we isolated coding DNA for these genes from S. baicalensis, a medicinal herb rich in flavones with biological and … …OnLine Journal of Biological Sciences, Vol. 15, Issue 2 · 13 Jun 2015 · 7,453 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleSynthesis and Biological Evaluation of 6-Hydroxy-4-Methyl-5,7-(Bis-p-ChlorophenylAzo) CoumarinDalal M. Ibrahim, Juliana Jumal, Farah Wahida Harun6-hydroxy-4-methyl-5,7-(bis-p-chlorophenylazo)coumarinhas been synthesized and characterizedby CHN elemental analysis, FTIR, 1H-NMR-spectroscopy andmass-spectral data. Cytotoxic screening by MTT assay was carried out on the compoundagainst breast cancer cells. The overall results from preliminary screeningprogram revealed that the cell proliferation was highly inhibited by 6-hydroxy-4-methyl-5,7-(bis-p-chlorophenylazo)coumarin with the value of 2.81%, at concentration of 30 µg mL-1 comparedwith the untreated control cells and also … …American Journal of Applied Sciences, Vol. 13, Issue 1 · 21 Dec 2015 · 7,670 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleHydroxyl Radical-Scavenging Activity-Guided Extraction of Peptides from Oviductus ranaeJieyang Shen, Yihui Liu, Jiahao Xu et al.Oviductus Ranae (OR) is a traditional Chinese medicinal material that is listed in Chinese Pharmacopeia with proteins the most abundant ingredients. In present work, pepsin/trypsin-based stepwise hydrolysis was applied to extract Antioxidant Peptides from OR (APOR) using hydroxyl radical-scavenging capacity as evaluation index. After single-factor experiment, response surface method coupled with Box-Behnken design were used for optimizing process parameters and … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 4 · 18 Oct 2021 · 6,609 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleAntispasmodic Activity of Persea cordata Vell. Mez. (Lauraceae) Fractions on Guinea Pig Ileum Induced by 5-Hydroxytryptamine and BradykininJúlio A. Zampirolo, Hellen K. Stulzer, Monika Piazzon Tagliari et al.Problem statement: Persea cordata previously demonstrated antispasmodic action against two neurotransmitters. It is important confirm such action against other neurotransmitters. Approach: Present study described the antispasmodic activity of polar (EtOAc; n-BuOH) and non polar (n-hexane; dichloromethane) fractions from the bark of Persea cordata, against guinea pig ileum contracted by 5-hydroxytryptamine (5-HT) and bradykinin (BK). Results: The results indicated that hexane … …American Journal of Pharmacology and Toxicology, Vol. 3, Issue 4 · 31 Dec 2008 · 7,400 accessesView PDF Cite