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- Andersson, C.-G.
(författare)
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Ta tempen på livsmedel.
- 1987
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Ingår i: Livsmedelsteknik. ; 29:3, s. 67-69
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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- Andersson, R., et al.
(författare)
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Biologisk konservering.
- 1988
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Ingår i: InforMAT. ; 1:1, s. 31-35
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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- Andersson, Rolf E, et al.
(författare)
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Antibacterial activity of plantaricin SIK-83, a bacteriocin produced by Lactobacillus plantarum
- 1988
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Ingår i: Biochimie. - : Elsevier BV. - 0300-9084 .- 1638-6183. ; 70:3, s. 381-390
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Tidskriftsartikel (refereegranskat)abstract
- Lactobacillus plantarum SIK-83 produces a bacteriocin, designated plantaricin SIK-83, which inhibits 66 of 68 lactic acid bacteria from the genera Lactobacillus, Leuconostoc, Pediococcus and Streptococcus. A 500-fold dilution of L. plantarum SIK-83 MRS culture supernatant with phosphate buffer was sufficient to kill 105 cells/ml of Pediococcus pentosaceus within 120s. The killing of a sensitive population followed exponential kinetics. It shown that the bacteriocin binds specifically to sensitive cells but not to nonsensitive lactic acid bacteria, the producer strain or Gram-negative bacteria. Sensitive cells, after exposure to the bacteriocin, could be rescued by treatment with proteolytic enzymes. In buffer, plantaricin SIK-83 was adsorbed to the cell surface almost immediately, and morphological lesions were observed within 2 h after the cells were exposed to the bacteriocin. The lethal mode of action appeared to be due to damage to the cell membrane, resulting in cell lysis, which was detected by electron microscopy and by determination of released intracellular components. © 1988.
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- Andersson, R.E.
(författare)
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Biogenic amines in lactic acid-fermented vegetables
- 1988
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Ingår i: Lebensmittel-Wissenschaft + Technologie. - 0023-6438 .- 1096-1127. ; 21:1, s. 68-69
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Tidskriftsartikel (refereegranskat)abstract
- Lactic acid-fermented vegetables and root crops were analysed with respect to biogenic amines. Cadaverine, histamine, putrescine, spermidine and tyramine were found in concentrations ranging from 1 to 15 mg/kg of product. Dimethylamine, tryptamine, phenylethylamine and spermine were not detected at all in any of the products. Since all the amines found were present in concentrations considerably lower than those known to cause food poisoning, lactic acid-fermented vegetables and root crops should be considered as low-risk products with regard to the presence of biogenic amines. © 1988 Academic Press Limited.
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- Andersson, Rolf E.
(författare)
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Concentration and partial purification of lipase from Pseudomonas fluorescens
- 1980
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Ingår i: Biotechnology letters. - 0141-5492 .- 1573-6776. ; 2:5, s. 247-252
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Tidskriftsartikel (refereegranskat)abstract
- During ultrafiltration in a hollow fiber device 105 liters of lipase frort Pseudomonas fluorescens was concentrated to 4 liters with a yield of 56% of total initial activity. The concentrated lipase solution was lyophilized and purified on a DEAE-cellulose anion exchanger column. The partly purified lipase was found to probably contain carbohydrates. © 1980 Kluwer Academic Publishers.
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