摘要:
An aroma distillate of a bacterial culture containing .alpha.-acetolactic acid is prepared by acidifying the bacterial culture to a pH of about 3-4 and subjecting it to water vapor distillation in the presence of oxygen for oxidation of the .alpha.-acetolactic acid to diacetyl. When 10% of the culture is driven off, a yield of 85% of diacetyl is obtained. The resultant distillate is used for aromatizing edible fats.
摘要:
The present invention relates to a hydrodynamic brake which comprises a stator, a rotor, a toroidal space defined by the stator and the rotor, a medium which is intended to be supplied to the toroidal space when the brake is activated, and a multiplicity of components for allowing regulation of the flow of the medium to and from the toroidal space. The hydrodynamic brake incorporates a structure with a multiplicity of recesses which each have an opening in a substantially common plane and each is intended to accommodate one of the components.
摘要:
A method of selection of lactic acid bacteria for providing a method of protecting humans against Streptococcus pneumoniae infections by selecting a lactic acid bacterial strain (LAB) naturally carrying genes coding for proteins similar to the PspC, choline binding protein of S. pneumoniae so that the selected LAB can be used in various products for oral and nasal administration to humans as immune enhancers against S. pneumoniae, and products containing specifically selected LAB that naturally carry genes coding for proteins similar to PcpC binding protein of S. pneumoniae as oral and nasal immune enhancers for humans.
摘要:
DNA molecules and methods for producing proteins, or fragments thereof, having binding activity for the fast form of .alpha..sub.2 -macroglobulins as exemplified for the streptococcal surface proteins MIG, MAG and ZAG.
摘要:
The present invention relates to a hydrodynamic brake which comprises a stator, a rotor, a toroidal space defined by the stator and the rotor, a medium which is intended to be supplied to the toroidal space when the brake is activated, and a multiplicity of components for allowing regulation of the flow of the medium to and from the toroidal space. The hydrodynamic brake incorporates a structure with a multiplicity of recesses which each have an opening in a substantially common plane and each is intended to accommodate one of the components.
摘要:
A gear pump incorporates a ring gear supported for rotation, a gearwheel arranged eccentrically within the ring gear, and a rotatable shaft incorporating a portion which extends through a hole in the gearwheel. The portion of the shaft includes a first surface, and the gearwheel includes a second surface, which surfaces are shaped to allow transfer of rotary motion from the shaft to the gearwheel. The transfer between the first surface and the second surface takes place via a region of contact. The region of contact has axial extent equal to less than half of the gearwheel's axial extent and the region is divided by a radial plane which extends centrally through the gearwheel.
摘要:
Live vaccines and methods for preparing the vaccines useful in protecting a host from infection by a pathogenic microorganism are provided. Vaccines are prepared from live Lactobacillus cells which have been transformed using DNA technology to express heterologous antigens of pathogenic microorganisms or other suitable biological material. Genes encoding antigenic determinants pathogenic in the mammalian gastrointestinal tract are inserted into expression cassettes and fused with genes encoding an aggregation factor and/or a mucin binding factor. The inserted genes are shown to transform L. reuteri cells. The aggregation enhancing and mucin binding genes have been isolated and sequenced. The vaccine can be ingested orally in a pharmaceutical carrier or in milk products.
摘要:
The present invention relates to a new recombinant DNA-molecule comprising a nucleotide sequence from S. aureus coding for a protein, or polypeptide, having collagen binding properties.