SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "db:Swepub ;pers:(Mattiasson Bo)"

Sökning: db:Swepub > Mattiasson Bo

  • Resultat 1-10 av 521
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  •  
2.
  • Mamo, Gashaw, et al. (författare)
  • Preface
  • 2020
  • Ingår i: Alkaliphiles in Biotechnology. - 0724-6145. ; 172
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
  •  
3.
  • Adlercreutz, Patrick, et al. (författare)
  • Aspects of biocatalyst stability in organic solvents
  • 1987
  • Ingår i: Biocatalysis and Biotransformation. - : Informa UK Limited. - 1024-2422. ; 1:2, s. 99-108
  • Forskningsöversikt (refereegranskat)abstract
    • The stability of biocatalysis in systems containing organic solvents is reviewed. Among the examples presented are homogeneous mixtures of water and water-miscible organic solvents, aqueous/organic two-phase systems, solid biocatalysts suspended in organic solvents, enzymes in reverse micelles and modified enzymes soluble in water immiscible solvents. The stability of biocatalysts in organic solvents depends very much on the conditions. The hydrophobicity or the polarity of the solvent is clearly of great importance. More hydrophobic solvents (higher log P values) are less harmful to enzymes than less hydrophobic solvents. The water content of the system is a very important parameter. Some water is essential for enzymatic activity; however, the stability of enzymes decreases with increasing water content. Mechanisms of enzyme inactivation are discussed.
  •  
4.
  • Adlercreutz, Patrick, et al. (författare)
  • Characterization of Gluconobacter oxydans immobilized in calcium alginate
  • 1985
  • Ingår i: Applied Microbiology and Biotechnology. - 0175-7598. ; 22:1, s. 1-7
  • Tidskriftsartikel (refereegranskat)abstract
    • Gluconobacter oxydans cells were immobilized in calcium alginate and the preparation was used for the oxidation of glycerol to dihydroxyacetone. The characterization was done according to the guidelines given by the Working Party on Immobilized Biocatalysts of the European Federation of Biotechnology. The pH optimum of the preparation was found to be 5.0 and the temperature optimum was 40°C. However, the operational stability was better at 30°C. The glycerol concentration required to obtain half the maximal reaction rate was about 5 mM for both immobilized and free cells. At low concentrations of glycerol and high concentrations of dihydroxyacetone a slight inhibition was noted. No loss of activity of the immobilized preparation was observed after storage for 68 days at +4°C. Investigation of the operational stability revealed a half-life of 5 days. Studies of the influence of particle size and cell densities as well as that of oxygen concentration revealed that the oxygen supply was the rate limiting step.
  •  
5.
  • ADLERCREUTZ, PATRICK, et al. (författare)
  • Enzymatic Peptide Synthesis in Organic Media
  • 1990
  • Ingår i: Annals of the New York Academy of Sciences. - : Wiley. - 0077-8923 .- 1749-6632. ; 613:1, s. 517-520
  • Tidskriftsartikel (refereegranskat)
  •  
6.
  •  
7.
  • Adlercreutz, Patrick, et al. (författare)
  • Oxygen supply to immobilized cells : 1. Oxygen production by immobilized Chlorella pyrenoidosa
  • 1982
  • Ingår i: Enzyme and Microbial Technology. - : Elsevier BV. - 0141-0229. ; 4:5, s. 332-336
  • Tidskriftsartikel (refereegranskat)abstract
    • Oxygen supply at high cell densities of aerobic organisms is a great problem in immobilized cell preparations. To investigate the possibility of in situ oxygen generation the alga Chlorella pyrenoidosa was immobilized on alginate beads. The conditions for optimal oxygen production were investigated and in long term experiments the preparations were successful for at least 30 days.
  •  
8.
  • Adlercreutz, Patrick, et al. (författare)
  • Oxygen supply to immobilized cells : 2. Studies on a coimmobilized algae-bacteria preparation with in situ oxygen generation
  • 1982
  • Ingår i: Enzyme and Microbial Technology. - : Elsevier BV. - 0141-0229. ; 4:6, s. 395-400
  • Tidskriftsartikel (refereegranskat)abstract
    • A coimmobilized mixed culture of algae, Chlorella pyrenoidosa, and bacteria, Gluconobacter oxydans, has been studied. The conversion of glycerol to dihydroxyacetone(1,3-dihydroxy-2-propanone), catalysed by the bacteria, was used to indicate the oxygen supply in the immobilized preparation. The oxygen produced by the algae in the coimmobilized preparation was used by the bacteria more effectively than when the cells were immobilized separately and mixed within the reactor. A preparation consisting of only bacteria and no algae was much less effective. The coimmobilized preparation was used in the continuous production of dihydroxyacetone for six days without any significant loss of activity.
  •  
9.
  • Adlercreutz, Patrick, et al. (författare)
  • Oxygen supply to immobilized cells - 3. Oxygen supply by hemoglobin or emulsions of perfluorochemicals
  • 1982
  • Ingår i: European Journal of Applied Microbiology and Biotechnology. - 0171-1741. ; 16:4, s. 165-170
  • Tidskriftsartikel (refereegranskat)abstract
    • Oxygen supply is a critical point in technical processes when aerobic cells are used in immobilized preparations. This report concerns the use of hemoglobin or emulsions of perfluorochemicals (completely fluorinated organic compounds) to carry oxygen to immobilized cells. Both methods work well and do not seem to harm the cells. The perfluorochemical method of improving oxygen supply showed a higher operational stability than the hemoglobin method.
  •  
10.
  • Adlercreutz, Patrick, et al. (författare)
  • Oxygen supply to immobilized cells - 4. Use of p-benzoquinone as an oxygen substitute
  • 1984
  • Ingår i: Applied Microbiology and Biotechnology. - 0175-7598. ; 20:5, s. 296-302
  • Tidskriftsartikel (refereegranskat)abstract
    • Oxygen supply is a critical point in technical processes when aerobic cells are used in immobilized preparations. In this study p-benzoquinone is used as a substitute for oxygen in the oxidation of glycerol to dihydroxyacetone by immobilized Gluconobacter oxydans cells. The reaction rate was much higher when p-benzoquinone was used compared to when oxygen was used. In an experiment with free cells p-benzoquinone gave a rate more than four times that of oxygen, and with immobilized cells the difference was even greater. p-benzoquinone is more effective than oxygen because it gives a higher maximal reaction rate (the reason for this fact is discussed) and because it is more soluble in water than oxygen. The operational stability of the process is comparatively good. In one experiment the productivity decreased from 60 to 10 mmol/h·g over an 8-day period when p-benzoquinone was used. When oxygen was used in a similar experiment the productivity decreased from 14 to 6 mmol/h·g. The byproduct formed from p-benzoquinone, hydroquinone, can be oxidized to p-benzoquinone which can be re-used. Seven succesive regenerations of p-benzoquinone were performed without any loss of efficiency.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 521
Typ av publikation
tidskriftsartikel (432)
bokkapitel (34)
konferensbidrag (23)
forskningsöversikt (19)
doktorsavhandling (5)
rapport (4)
visa fler...
bok (3)
samlingsverk (redaktörskap) (1)
visa färre...
Typ av innehåll
refereegranskat (495)
övrigt vetenskapligt/konstnärligt (26)
Författare/redaktör
Galaev, Igor (100)
Adlercreutz, Patrick (81)
Hatti-Kaul, Rajni (58)
Hedström, Martin (43)
Plieva, Fatima (43)
visa fler...
Guieysse, Benoit (30)
Kirsebom, Harald (29)
Björnsson, Lovisa (22)
Kumar, Ashok (22)
Wehtje, Ernst (21)
Mamo, Gashaw (18)
Liu, Jing (17)
Dainiak, Maria (16)
Delgado, Osvaldo (15)
Murto, Marika (15)
Ivanov, Alexander (14)
Ertürk, Gizem (14)
Olsson, Gustaf (12)
Savina, Irina (12)
Kanatharana, Proespi ... (11)
Thavarungkul, Panote (11)
Quillaguamán, Jorge (10)
Svensson, Ingemar (9)
Andersson, Maria (9)
Munoz, Raul (9)
Denizli, Adil (9)
Idil, Neslihan (9)
Hagander, Per (8)
Axelsson, Jan Peter (8)
Holst, Olle (7)
Mandenius, Carl-Fred ... (7)
Parawira, Wilson (7)
Soares, Ana (7)
Nordberg Karlsson, E ... (6)
Otamiri, Marina (6)
Mosbach, Klaus (6)
Andersson, Jonatan (6)
Aslıyüce, Sevgi (6)
Welander, Ulrika (6)
Jönsson, Åsa (6)
Birgisson, Hakon (6)
Reslow, Mats (6)
Teeparuksapun, Kosin (6)
Alvarez Aliaga, Tere ... (5)
Berillo, Dmitry (5)
Badshah, Malik (5)
Crespo, Carla (5)
Deraz, Sahar (5)
Hashim, Suhaila (5)
visa färre...
Lärosäte
Lunds universitet (508)
Örebro universitet (5)
Linnéuniversitetet (5)
Högskolan Kristianstad (4)
Högskolan i Halmstad (4)
Umeå universitet (2)
visa fler...
Kungliga Tekniska Högskolan (2)
Mälardalens universitet (2)
Linköpings universitet (1)
Malmö universitet (1)
RISE (1)
Karlstads universitet (1)
visa färre...
Språk
Engelska (518)
Svenska (2)
Odefinierat språk (1)
Forskningsämne (UKÄ/SCB)
Teknik (419)
Naturvetenskap (92)
Medicin och hälsovetenskap (26)
Lantbruksvetenskap (2)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy