The Experts below are selected from a list of 135357 Experts worldwide ranked by ideXlab platform
Atim Asitok - One of the best experts on this subject based on the ideXlab platform.
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a pseudomonas aeruginosa strain ikw1 produces an unusual polymeric surface Active Compound in waste frying oil minimal medium
International journal of sciences, 2016Co-Authors: Maurice George Ekpenyong, S P Antai, Atim AsitokAbstract:A Gram-negative bacterium isolated from the sub-surface water of Ikang River, Niger Delta region, Nigeria produced an unusual biosurfactant in waste frying oil-minimal medium. Cultural and biochemical characterizations as well as 16S rRNA sequencing identified the bacterium as a strain of Pseudomonas aeruginosa with 100% sequence homology with Pseudomonas aeruginosa strain HNYM41. Biochemical characterizations, thin layer chromatography (TLC), high performance liquid chromatography (HPLC) and Fourier transform-infrared (FT-IR) spectrometry identified the Active Compound as a glycolipopeptide (peptidoglycolipid) composed of 40.36% carbohydrates, 20.16% proteins and 34.56% lipids. The biosurfactant reduced surface tension of water from 72.00 to 24.62 dynes/cm at a critical micelle concentration (CMC) of 20.80 mg/L indicating excellent effectiveness and efficiency properties. Commendable oil-washing property (79.92% oil recovery) with an elution rate of 0.68 mL/min at 70°C, foaming and foam stability, excellent emulsification activity in kerosene, crude oil and palm oil and a significant (P = 0.000; R2 = 0.9901) oil solubilization property indicate excellent oil recovery, detergency and remediation potentials of the biosurfactant. Oil displacement, emulsifying and antimicrobial activities of the Compound were relatively stable at relevant temperatures, pH and NaCl levels suggesting suitability for applications in hydrophobic Compound remediation, emulsion stabilization and preservation of formulations.
Eric A. Decker - One of the best experts on this subject based on the ideXlab platform.
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Influence of iron solubility and charged surface-Active Compounds on lipid oxidation in fatty acid ethyl esters containing association colloids.
Food chemistry, 2015Co-Authors: Rika Homma, David Johnson, D. Julian Mcclements, Eric A. DeckerAbstract:The impact of iron Compounds with different solubilities on lipid oxidation was studied in the presence and absence of association colloids. Iron (III) sulfate only accelerated lipid oxidation in the presence of association colloids while iron (III) oleate accelerated oxidation in the presence and absence of association colloids. Further, iron (III) oxide retarded lipid oxidation both with and without association colloids. The impact of charged association colloids on lipid oxidation in ethyl oleate was also investigated. Association colloids consisting of the anionic surface-Active Compound dodecyl sulphosuccinate sodium salt (AOT), cationic surface-Active Compound hexadecyltrimethylammonium bromide (CTAB), and nonionic surface-Active Compound 4-(1,1,3,3-tetramethylbutyl)phenyl-polyethylene glycol (Triton X-100) retarded, promoted, and had no effect on lipid oxidation rates, respectively. These results indicate that the polarity of metal Compounds and the charge of association colloids play a big role in lipid oxidation.
Manik Lal Hembram - One of the best experts on this subject based on the ideXlab platform.
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cell surface changes associated with in vitro capacitation and acrosome reaction of goat epididymal sperm by a marine bio Active Compound from the snail telescopium telescopium
Veterinarski Arhiv, 2010Co-Authors: Samata Maji, Uttam Datta, Manik Lal HembramAbstract:A protein factor, spermatheca fraction fi fty, isolated from the spermatheca/ovotestis gland of a marine mollusc Telescopium telescopium by 50% ammonium sulphate precipitation was capable of inducing a capacitation and acrosome reaction of washed goat cauda epididymal spermatozoa in vitro. The effect of this isolated bio-Active Compound on goat sperm cells was comparable to heparin and concanavalinA. The number of acrosome reacted spermatozoa treated with heparin, concanavalinA and spermatheca fraction fi fty increased steadily and signifi cantly (P<0.001) over the extended period of incubation. Observation concluded that spermatheca fraction fi fty could be used for the evaluation of sperm plasmamembrane integrity and/or acrosomal integrity in vitro.
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cell surface changes associated with cell surface changes associated with in vitro in vitro capacitation and capacitation and acrosome reaction of goat epididymal sperm by a marine bio Active acrosome reaction of goat epididymal sperm by a marine bio
2010Co-Authors: Samata Maji, Uttam Datta, Manik Lal HembramAbstract:A protein factor, spermatheca fraction fi fty, isolated from the spermatheca/ovotestis gland of a marine mollusc Telescopium telescopium by 50% ammonium sulphate precipitation was capable of inducing a capacitation and acrosome reaction of washed goat cauda epididymal spermatozoa in vitro. The effect of this isolated bio-Active Compound on goat sperm cells was comparable to heparin and concanavalinA. The number of acrosome reacted spermatozoa treated with heparin, concanavalinA and spermatheca fraction fi fty increased steadily and signifi cantly (P<0.001) over the extended period of incubation. Observation concluded that spermatheca fraction fi fty could be used for the evaluation of sperm plasmamembrane integrity and/or acrosomal integrity in vitro.
Maurice George Ekpenyong - One of the best experts on this subject based on the ideXlab platform.
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a pseudomonas aeruginosa strain ikw1 produces an unusual polymeric surface Active Compound in waste frying oil minimal medium
International journal of sciences, 2016Co-Authors: Maurice George Ekpenyong, S P Antai, Atim AsitokAbstract:A Gram-negative bacterium isolated from the sub-surface water of Ikang River, Niger Delta region, Nigeria produced an unusual biosurfactant in waste frying oil-minimal medium. Cultural and biochemical characterizations as well as 16S rRNA sequencing identified the bacterium as a strain of Pseudomonas aeruginosa with 100% sequence homology with Pseudomonas aeruginosa strain HNYM41. Biochemical characterizations, thin layer chromatography (TLC), high performance liquid chromatography (HPLC) and Fourier transform-infrared (FT-IR) spectrometry identified the Active Compound as a glycolipopeptide (peptidoglycolipid) composed of 40.36% carbohydrates, 20.16% proteins and 34.56% lipids. The biosurfactant reduced surface tension of water from 72.00 to 24.62 dynes/cm at a critical micelle concentration (CMC) of 20.80 mg/L indicating excellent effectiveness and efficiency properties. Commendable oil-washing property (79.92% oil recovery) with an elution rate of 0.68 mL/min at 70°C, foaming and foam stability, excellent emulsification activity in kerosene, crude oil and palm oil and a significant (P = 0.000; R2 = 0.9901) oil solubilization property indicate excellent oil recovery, detergency and remediation potentials of the biosurfactant. Oil displacement, emulsifying and antimicrobial activities of the Compound were relatively stable at relevant temperatures, pH and NaCl levels suggesting suitability for applications in hydrophobic Compound remediation, emulsion stabilization and preservation of formulations.
Hee Yang - One of the best experts on this subject based on the ideXlab platform.
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Safflower Seed Oil and Its Active Compound Acacetin Inhibit UVB-Induced Skin Photoaging
Journal of Microbiology and Biotechnology, 2020Co-Authors: Eun Hee Jeong, Jong-eun Kim, Hee Yang, Ki Won LeeAbstract:Ultraviolet (UV) is one of the major factors harmful to skin health. Irradiation with ultraviolet accelerates the decline of skin function, causing the skin to have deep wrinkles, dryness, decreased procollagen production, and degradation of collagen. Novel materials are needed to prevent the aging of the skin by blocking the effects of UV. Safflower seed oil (Charthamus tinctorius L., SSO) contains significantly high levels of unsaturated fatty acids and phytochemicals. SSO has been traditionally used in China, Japan, and Korea to improve skin and hair. Our objective in this study was to determine the effect of SSO and its Active Compound acacetin on UVB-induced skin photoaging in HaCaT cells and human dermal fibroblasts (HDF). SSO inhibited UVB-induced matrix metalloproteinase-1 (MMP-1) at both protein and mRNA levels in HaCaT cells and HDF. MMP-1 is known to play important roles in collagen degradation and wrinkle formation. Acacetin, a type of flavonoid, is present in SSO. Similar to SSO, acacetin also inhibited UVB-induced MMP-1 protein and mRNA levels in HaCaT cells and HDF. MMP-1 mRNA is primarily regulated by the mitogen-activated kinase (MAPK) signaling pathway. Acacetin regulated the phosphorylation of JNK1/2 and c-jun, but did not inhibit the phosphorylation of ERK1/2, p38 and AKT. Taken together, these results indicate that SSO and its Active Compound acacetin can prevent UVB-induced MMP-1 expression, which leads to skin photoaging, and may therefore have therapeutic potential as an anti-wrinkle agent to improve skin health.
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safflower seed oil and its Active Compound acacetin inhibit uvb induced skin photoaging
Journal of Microbiology and Biotechnology, 2020Co-Authors: Eun Hee Jeong, Hee YangAbstract:Ultraviolet (UV) is one of the most important harmful factors for skin health. Irradiation with ultraviolet causes skin to have deep wrinkles, dryness, decreased procollagen production, and degradation of collagen. It accelerates the decline of skin function. Novel materials are needed to prevent the aging of the skin by blocking the effects of UV. Safflower seed oil (Charthamus tinctorius L., SSO) contains significantly high levels of unsaturated fatty acids and phytochemicals. SSO has been traditionally used in China, Japan, and Korea to improve skin and hair. The objective of this study was to determine the effect of the SSO and its Active Compound acacetin on UVB-induced skin photoaging in HaCaT cells and human dermal fibroblasts (HDF). SSO inhibited UVB-induced matrix metalloproteinase (MMP)-1 at both protein and mRNA levels in HaCaT cells and HDF. MMP-1 is known to play important roles in collagen degradation and wrinkle formation. Acacetin, a type of flavonoid, is present in SSO. Similar to SSO, acacetin also inhibited UVB-induced MMP-1 protein and mRNA levels in HaCaT cells and HDF. MMP-1 mRNA is primarily regulated by the mitogen activated kinase (MAPK) signaling pathway. Acacetin regulated the phosphorylation of JNK1/2 and c-jun, but did not inhibit the phosphorylation of ERK1/2, p38 and AKT. Taken together, these results indicate that SSO and its Active Compound acacetin can prevent UVB-induced MMP-1 expression that lead to skin photoaging. Therefore, SSO might have therapeutic potential as an anti-wrinkle agent to improve skin health.
