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Articles 1 - 24 of 24
Full-Text Articles in Biochemical and Biomolecular Engineering
Development Opportunities And Technical Challenges Of Industrialization For Hydrogen Production From Bio-Ethanol Reforming, Xue Han, Hong He, Guojun Yue, Hailong Lin, Jinsong Liu, Bin Yu
Development Opportunities And Technical Challenges Of Industrialization For Hydrogen Production From Bio-Ethanol Reforming, Xue Han, Hong He, Guojun Yue, Hailong Lin, Jinsong Liu, Bin Yu
Bulletin of Chinese Academy of Sciences (Chinese Version)
Bio-ethanol reforming for hydrogen production, using renewable raw materials and adopting mature and efficient chemical processes, is an important source of green hydrogen supply to achieve the goals of carbon peaking and carbon neutrality. Bio-ethanol is a widely used substitute for fossil fuels. With the continuous progress of cellulosic ethanol technology in recent years, bio-ethanol will gradually break through the constraints of starch-based raw material supply. Based on the industrialization achievements of hydrogen production and bio-ethanol, bio-ethanol reforming can realize a rapid linkage with the existing hydrogen energy industry. However, the existence of a carbon-carbon signal bond in ethanol poses …
Continuous Liquid-Liquid Extraction Of Lomustine Synthesis, Devna Grover
Continuous Liquid-Liquid Extraction Of Lomustine Synthesis, Devna Grover
The Journal of Purdue Undergraduate Research
No abstract provided.
Physical And Chemical Properties, Elemental Composition And Microbiological Purity Of Oil Extract Of Chamomile Flowers In Bitter Almond Oil, Khakim Tukhtaev, Sevara Khazratkulova
Physical And Chemical Properties, Elemental Composition And Microbiological Purity Of Oil Extract Of Chamomile Flowers In Bitter Almond Oil, Khakim Tukhtaev, Sevara Khazratkulova
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of the study was to obtain an oil extract with the participation of chamomile officinalis (Matrigaria Recutito) grown in the Tashkent region using bitter almond oil (Amygdalus communis L.). Its chromatographic and elemental analyzes have been carried out, its microbiological purity and physicochemical constants have been determined. For extraction, we used bitter almond oil obtained by cold pressing. Extraction of chamomile flowers in bitter almond oil was carried out by maceration in the ratio of raw material: solvent (1:10). Analysis of fatty acids in the fatty extract was carried out chromatographically. The fatty extract was found to contain …
Obtaining Of Bacterial Polysaccharides, Kulonov Abdulaziz, Mirzarakhmetova Dilbar, Turaeva Nigora
Obtaining Of Bacterial Polysaccharides, Kulonov Abdulaziz, Mirzarakhmetova Dilbar, Turaeva Nigora
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of this work was to develop a technology for obtaining bacterial exopolysaccharides. The problem was solved by using the bacterial strain Halovibrio variabilis UzAS3 as a polysaccharide producer. The optimal parameters of bacterial cultivation have been determined. A technological scheme for obtaining bacterial polysaccharides has been developed, which includes such stages as the cultivation of bacteria, the separation of bacterial biomass from the culture liquid, desalting, precipitation, washing and drying. The obtained results show that bacteria have a high potential for the yield of bacterial exopolysaccharides (7.1-9.5 mg/ml).
Optimal Conditions Of Fermentation Of The Pichia Pastoris Yeast Expressing The Recombinant Pres2-S Protein (M-Hbsag) Of Hepatitis B Virus (Hbv), Sasmakоv Sobirdjan, Ashirоv Оybek, Abdurakhmanоv Jaloliddin, Xasanоv Shuhrat
Optimal Conditions Of Fermentation Of The Pichia Pastoris Yeast Expressing The Recombinant Pres2-S Protein (M-Hbsag) Of Hepatitis B Virus (Hbv), Sasmakоv Sobirdjan, Ashirоv Оybek, Abdurakhmanоv Jaloliddin, Xasanоv Shuhrat
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of this study is determination of optimal fermentation conditions of the Pichia pastoris yeast expressing the recombinant Pres2-S protein of hepatitis B virus (HBV). For this purpose we investigated the main factors influencing for the cultivation of recombinant strain of the yeast Pichia pastoris pPIC3,5-S-HBsAg - the composition of the nutrient medium, pH and dissolved oxygen (DO). As a result, by enzyme-linked immunosorbent assay (ELISA) the optimal concentration of methanol ≈1.0 %, which is the initiator and the only source of carbon for protein expression in the Mut+ phenotype Pichia pastoris yeast cells was determined. In the selected …
Physical And Chemical Characteristics Of Supramolecular Complexes Of Glycirrizinic Acid With Phytohormones, Djuraev Tulqin, Esanov Rakhmatillo, Gafurov Makhmudjon, Kushiev Khabibjon
Physical And Chemical Characteristics Of Supramolecular Complexes Of Glycirrizinic Acid With Phytohormones, Djuraev Tulqin, Esanov Rakhmatillo, Gafurov Makhmudjon, Kushiev Khabibjon
CHEMISTRY AND CHEMICAL ENGINEERING
The process of formation of supramolecular complexes of glycyrrhizinic acid with some phytohormones (indolylacetic acid, indolylbutyric acid, α-naphthyl acetic acid and kinetin) were studied with the aim of creation the plant growth stimulator. The complexes structure was studied using IR and UV spectroscopy methods. The prepared compounds described by some physicochemical parameters. The stability constants and stoichiometric composition of complexes were determined in an aqueous solution at pH of 7,2 using UV spectrometry method. In result, all complexes have composition as 1:1 ratio, except the kinetin complex which has 2:1 ratio. The stability constants were equal: KGA:IAA=1,86±1×104; KGA:IBA=2,51±1×103; KGA:NAA =2,70±1×103 …
Study Of The Process For The Removal Of Dyeing Matters Of The Plant Occimum Basilicum L. Lamiaceae, Usmonjonova Khulkar, Atkhamova Saida, Dodaev Kuchkor
Study Of The Process For The Removal Of Dyeing Matters Of The Plant Occimum Basilicum L. Lamiaceae, Usmonjonova Khulkar, Atkhamova Saida, Dodaev Kuchkor
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of the work is dedicated isolation of anthocyanins by ethanol from herbal plant of Occimum basilicum L. Lamiaceae basis. The were studied influencing of temperature, concentration of ethanol to isolation of anthocyanins. There were passed investigations on studying influence level of heating and hydromodule system of rav material-solvent to maximal isolating of anthocyanins. The colors define by fotokolorometrical method at wave length 400-600 nm. There are shown at 540 nm maximal peak of anthocyanins and it is geven as a grapfical diagram. From the obtained depends on content of alcohol in aquatic solution from outlet of colors is …
Study Of Recombinant Protein Fractions From The Bombyx Mori And Pichia Pastoris Using "Native Page" Method, Abdurhakhmanov Jaloliddin, Sasmakov Sobirdjan, Khasanov Shuhrat, Ashirov Оybek
Study Of Recombinant Protein Fractions From The Bombyx Mori And Pichia Pastoris Using "Native Page" Method, Abdurhakhmanov Jaloliddin, Sasmakov Sobirdjan, Khasanov Shuhrat, Ashirov Оybek
CHEMISTRY AND CHEMICAL ENGINEERING
We have studied the recombinant protein fractions of ̴ 24-34 kDa obtained from Bombyx mori - silkworm larvae and yeast Pichia pastoris. Fractions, containing the recombinant proteins by gel-electrophoresis using the “Native PAGE” method, which allows for differentiation of proteins according to their natural (surface) charge and conformational properties were studied. The results showed that the recombinant protein fraction from Bombyx mori (̴ 34 kDa) consisted of four components and fraction from Pichia pastoris (̴ 24 kDa) consisted one component. The most optimal conditions for the “Native PAGE”- the main gel: Tris HCl (pH-8.8) 244 mM, Bis-Acrylamide 10%, TEMED 0.08%, …
Physical And Chemical Characteristics Of Supramolecular Complexes Of Glycirrizinic Acid With Phytohormones, Djuraev Tulqin, Esanov Rakhmatillo, Gafurov Makhmudjon, Kushiev Khabibjon
Physical And Chemical Characteristics Of Supramolecular Complexes Of Glycirrizinic Acid With Phytohormones, Djuraev Tulqin, Esanov Rakhmatillo, Gafurov Makhmudjon, Kushiev Khabibjon
CHEMISTRY AND CHEMICAL ENGINEERING
The process of formation of supramolecular complexes of glycyrrhizinic acid with some phytohormones (indolylacetic acid, indolylbutyric acid, α-naphthyl acetic acid and kinetin) were studied with the aim of creation the plant growth stimulator. The complexes structure was studied using IR and UV spectroscopy methods. The prepared compounds described by some physicochemical parameters. The stability constants and stoichiometric composition of complexes were determined in an aqueous solution at pH of 7,2 using UV spectrometry method. In result, all complexes have composition as 1:1 ratio, except the kinetin complex which has 2:1 ratio. The stability constants were equal: KGA:IAA=1,86±1×104; KGA:IBA=2,51±1×103; KGA:NAA =2,70±1×103 …
Study Of The Process For The Removal Of Dyeing Matters Of The Plant Occimum Basilicum L. Lamiaceae, Usmonjonova Khulkar, Atkhamova Saida, Dodaev Kuchkor
Study Of The Process For The Removal Of Dyeing Matters Of The Plant Occimum Basilicum L. Lamiaceae, Usmonjonova Khulkar, Atkhamova Saida, Dodaev Kuchkor
CHEMISTRY AND CHEMICAL ENGINEERING
The aim of the work is dedicated isolation of anthocyanins by ethanol from herbal plant of Occimum basilicum L. Lamiaceae basis. The were studied influencing of temperature, concentration of ethanol to isolation of anthocyanins. There were passed investigations on studying influence level of heating and hydromodule system of rav material-solvent to maximal isolating of anthocyanins. The colors define by fotokolorometrical method at wave length 400-600 nm. There are shown at 540 nm maximal peak of anthocyanins and it is geven as a grapfical diagram. From the obtained depends on content of alcohol in aquatic solution from outlet of colors is …
Study Of Recombinant Protein Fractions From The Bombyx Mori And Pichia Pastoris Using "Native Page" Method, Abdurhakhmanov Aloliddin, Sasmakov Sobirdjan, Khasanov Shuhrat, Ashirov Оybek
Study Of Recombinant Protein Fractions From The Bombyx Mori And Pichia Pastoris Using "Native Page" Method, Abdurhakhmanov Aloliddin, Sasmakov Sobirdjan, Khasanov Shuhrat, Ashirov Оybek
CHEMISTRY AND CHEMICAL ENGINEERING
We have studied the recombinant protein fractions of ̴ 24-34 kDa obtained from Bombyx mori - silkworm larvae and yeast Pichia pastoris. Fractions, containing the recombinant proteins by gel-electrophoresis using the “Native PAGE” method, which allows for differentiation of proteins according to their natural (surface) charge and conformational properties were studied. The results showed that the recombinant protein fraction from Bombyx mori (̴ 34 kDa) consisted of four components and fraction from Pichia pastoris (̴ 24 kDa) consisted one component. The most optimal conditions for the “Native PAGE”- the main gel: Tris HCl (pH-8.8) 244 mM, Bis-Acrylamide 10%, TEMED 0.08%, …
Selection Of Optimal Conditions For The Cultivation Of Insect Cells For Use In Biotechnology, Khasanоv Shuhrat, Sasmakоv Sobir, Abdurakhmanоv Jaloliddin, Ashirоv Оybek
Selection Of Optimal Conditions For The Cultivation Of Insect Cells For Use In Biotechnology, Khasanоv Shuhrat, Sasmakоv Sobir, Abdurakhmanоv Jaloliddin, Ashirоv Оybek
CHEMISTRY AND CHEMICAL ENGINEERING
The article discusses use of the insect cell cultures for biotechnological purposes. Optimal conditions for the cultiva-tion of Spodoptera exigua and Lymantria dispar cell lines were selected.
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
CHEMISTRY AND CHEMICAL ENGINEERING
The methods of oriented immobilization of lipases on a solid carrier - Silochrome C-80 have been developed. The resulting sorbents were tested in the process of obtaining biodiesel from cotton oil. It was shown that immobilized lipase on Silochrome C-80 with NH2 group has the highest transetrification ability and stability, while in sorbents with the enzyme immobilized with -COOH and -SH groups this value was 87 and 53%, respectively. Biocatalysis using an affinity sorbent of immobilized lipase with the –NH2 group has a high operational stability, which, after 240 hours of operation, retains more than 50%, and after 480 hours, …
Selection Of Optimal Conditions For The Cultivation Of Insect Cells For Use In Biotechnology, Khasanоv Shuhrat, Sasmakоv Sobir, Abdurakhmanоv Jaloliddin, Ashirоv Оybek
Selection Of Optimal Conditions For The Cultivation Of Insect Cells For Use In Biotechnology, Khasanоv Shuhrat, Sasmakоv Sobir, Abdurakhmanоv Jaloliddin, Ashirоv Оybek
CHEMISTRY AND CHEMICAL ENGINEERING
The article discusses use of the insect cell cultures for biotechnological purposes. Optimal conditions for the cultiva-tion of Spodoptera exigua and Lymantria dispar cell lines were selected.
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
CHEMISTRY AND CHEMICAL ENGINEERING
The methods of oriented immobilization of lipases on a solid carrier - Silochrome C-80 have been developed. The resulting sorbents were tested in the process of obtaining biodiesel from cotton oil. It was shown that immobilized lipase on Silochrome C-80 with NH2 group has the highest transetrification ability and stability, while in sorbents with the enzyme immobilized with -COOH and -SH groups this value was 87 and 53%, respectively. Biocatalysis using an affinity sorbent of immobilized lipase with the –NH2 group has a high operational stability, which, after 240 hours of operation, retains more than 50%, and after 480 hours, …
Obtaining Of The “Green Flourecent Protein - Gfp” In Yeast Of Pichia Pastoris As Repoter Of Heterological Protein Expression, Ashirоv Оybek, Sasmakоv Sobirdjan, Abdurakhmanоv Jaloliddin, Hasanоv Shuhrat
Obtaining Of The “Green Flourecent Protein - Gfp” In Yeast Of Pichia Pastoris As Repoter Of Heterological Protein Expression, Ashirоv Оybek, Sasmakоv Sobirdjan, Abdurakhmanоv Jaloliddin, Hasanоv Shuhrat
CHEMISTRY AND CHEMICAL ENGINEERING
Based on pPIC3.5 and pPIC9 yeast vectors the recombinant plasmid DNA pPIC3.5-GFP (8464 bp) and pPIC9-GFP (8718 bp) containing cDNA (719 bp) of Green fluorescent protein (GFP) were cloned. The obtained plasmids were transformed into yeast cells of the GS115 Pichia pastoris strain. Transformants are selected on histidine-deficient medium. Recombinant clones of pPIC3.5-GFP and pPIC9-GFP were identified by detecting cell fluorescence. GFP expression in yeast is confirmed by green fluorescence. Using electrophoresis in PAAG the molecular weight of the synthesized protein (≈27 kDa) is determined. The resulting reporter constructs and recombinant strains can be used to study the expression level …
Gradient Precipitation Of Recombinant Proteins Contained In Silkworm Larvae (Bombyx Mori) With Ammonium Sulphate, Abdurhakhmanov Jaloliddin, Sasmakov Sobirdjan, Khasanov Shuhrat, Ashirov Оybek
Gradient Precipitation Of Recombinant Proteins Contained In Silkworm Larvae (Bombyx Mori) With Ammonium Sulphate, Abdurhakhmanov Jaloliddin, Sasmakov Sobirdjan, Khasanov Shuhrat, Ashirov Оybek
CHEMISTRY AND CHEMICAL ENGINEERING
We investigated the protein extract of silkworm larvae. For the first time, an extract containing proteins from silkworm larvae, obtained by fractional precipitation using ammonium sulfate, was studied. As a result of experiment is established, that solutions of ammonium sulfate with a concentration from 20% to 65% are optimal for the sedimentation of protein molecules with a mass in the range of 25 and 45 kDa. Optimal results of the study proposed to use in the process of purification of recombinant proteins.
Selection Of Optimal Conditions For The Cultivation Of Insect Cells For Use In Biotechnology, Khasanоv Shuhrat, Sasmakоv Sobir, Abdurakhmanоv Jaloliddin, Ashirоv Оybek
Selection Of Optimal Conditions For The Cultivation Of Insect Cells For Use In Biotechnology, Khasanоv Shuhrat, Sasmakоv Sobir, Abdurakhmanоv Jaloliddin, Ashirоv Оybek
CHEMISTRY AND CHEMICAL ENGINEERING
The article discusses use of the insect cell cultures for biotechnological purposes. Optimal conditions for the cultiva-tion of Spodoptera exigua and Lymantria dispar cell lines were selected.
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
Development Of A Method Of Oriented Immobilization Of Lipases On A Solid Carrier, Ziyavitdinov Jamolitdin Fazlitdinovich, Inogamov Utkir Kudratillayevich, Berdiev Nodir Sharifovich, Ishimov Uchkun Jomuradovich
CHEMISTRY AND CHEMICAL ENGINEERING
The methods of oriented immobilization of lipases on a solid carrier - Silochrome C-80 have been developed. The resulting sorbents were tested in the process of obtaining biodiesel from cotton oil. It was shown that immobilized lipase on Silochrome C-80 with NH2 group has the highest transetrification ability and stability, while in sorbents with the enzyme immobilized with -COOH and -SH groups this value was 87 and 53%, respectively. Biocatalysis using an affinity sorbent of immobilized lipase with the –NH2 group has a high operational stability, which, after 240 hours of operation, retains more than 50%, and after 480 hours, …
The Effects Of Adaptogens On The Physical And Psychological Symptoms Of Chronic Stress, Tosin O. Ajala
The Effects Of Adaptogens On The Physical And Psychological Symptoms Of Chronic Stress, Tosin O. Ajala
DISCOVERY: Georgia State Honors College Undergraduate Research Journal
Stress is a state of disharmony or threatened homeostasis. The maintenance of homeostasis in stages of internal or external challenges, called stressors, requires constant adjustments of hormonal, behavioral, and autonomic functions. The nuances of life may bring about unwanted stress to the human body. Some of the top causes of stress in America include work, finances, relationships, and health. There are numerous physical and psychological symptoms associated with long-term “chronic” stress, which include chronic fatigue, frustration, irritability, insomnia, frequent headaches, chest and back pain, weakness, and weight gain or weight loss. These symptoms of chronic stress are associated with depression, …
Effect Of Packaging Material On Color Properties Of Catsup Tomato Sauce, Naser Kohan-Nia, Babak Pakbin, Razzagh Mahmoudi, Omid Fakhri
Effect Of Packaging Material On Color Properties Of Catsup Tomato Sauce, Naser Kohan-Nia, Babak Pakbin, Razzagh Mahmoudi, Omid Fakhri
Journal of Applied Packaging Research
Catsup and tomato sauce products currently are one of the most popular and commercially available table sauces particularly consumed by young people and families around the world in recent decades. In this study colorimetric properties of catsup sauce samples including L*, a* and b* values in different packaging materials including PP, PE, PET, Glass and Sachet have been investigated during and after 180 days storage time at 22̊ C (environmental temperature). Hunter Lab system has been used to evaluate the color values of sauce samples. According to obtained results of experimental measurements and sensory evaluations, PP and PE packaging materials …
An Economic Analysis Of Small-Scale Biodiesel Production: Implementation Of Ethyl Ester Production In A Job Shop Setting, Scott Haase, Benjamin Craig
An Economic Analysis Of Small-Scale Biodiesel Production: Implementation Of Ethyl Ester Production In A Job Shop Setting, Scott Haase, Benjamin Craig
Journal of Undergraduate Research at Minnesota State University, Mankato
Biodiesel is becoming a demanded consumer automotive alternative fuel used in diesel vehicles today. An emerging trend is toward small-scale biodiesel production performed by the final consumer. A limited source of commercially available production systems exists and has resulted in many systems being designed and built by the user. Preliminary research conducted by the authors has shown biodiesel to be the least-cost alternative to petroleum diesel after as few as 8 months of system use. This study examines the economic viability of building and producing biodiesel using a small-scale production system versus buying consumer petroleum diesel. During production, measurements were …
Titanium-Oxygen Bond Length -Bond Valence Relationship, D. Dodd, F. D. Hardcastle, S. Laffoon
Titanium-Oxygen Bond Length -Bond Valence Relationship, D. Dodd, F. D. Hardcastle, S. Laffoon
Journal of the Arkansas Academy of Science
A bond length–bond valence correlation is a simple method of checking and evaluating molecular structures and is of great interest in chemistry, biology, geology, and material science. Recently, we used quantum-mechanical arguments to derive Pauling’s bond length-valence relationship and to define the adjustable fitting parameter b in terms of atomic-orbital exponents. Improved orbital exponents were generated for elements 1-103 using published atomic radii and single-bond covalent radii as well as a continuous function for effective principal quantum number. In this study, we use orbital exponents for titanium (Ti) and oxygen (O) to generate a bond length-valence relationship for Ti-O bonds. …
Ultrafiltration Membrane Process For Pyrogen Removal In The Preparation Of Water For Injection (Wfi), Thet N. Soe
Ultrafiltration Membrane Process For Pyrogen Removal In The Preparation Of Water For Injection (Wfi), Thet N. Soe
Inquiry: The University of Arkansas Undergraduate Research Journal
An artificial kidney process based on ultrafiltration (called hemodiafiltration) more effectively removes blood toxins, particularly those of higher molecular weight, than conventional dialysis. In hemodiafiltration, replacement liquid must be added directly to the patient's blood to replace liquid filtered out of the blood in the ultrafiltration cartridge. This replacement liquid is made up of' "water for injection" (WFI) and other components such as salts and glucose. WFI is produced either by distillation or reverse osmosis and has a cost of $1.00 per liter. A patient with kidney problems would require three hemodiafiltration treatments per week, each requiring 70-80 liters of …