摘要:
The invention provides a complex inducible promoter system from a phage of a lactic acid bacterium, especially one having the DNA sequence of SEQ. ID. No: 3 given in FIG. 2, or a DNA sequence essentially corresponding to those sequences, and a modification of (an essential part of) such promoter system in which the mitomycin C induction system is replaced by a good-grade system, e.g. a temperature-initiated induction system or a salt-initiated induction system. Also is provided a recombinant vector and a transformed lactic acid bacterium comprising (an essential part of) such promoter system. Further a process for producing a desired protein by such transformed bacterium is provided, comprising expressing a gene encoding said desired protein or a precursor thereof under control of such promoter system or an essential part thereof. Preferably, the transformed lactic acid bacterium is made food-grade due to using food-grade DNA sequences and/or removing non-food-grade DNA sequences. When required, the desired protein can be secreted by the lactic acid bacterium if a DNA sequence fused to the gene encoding the desired protein is present which effects secretion of the desired protein or its precursor. The process can be used in a fermentation process, in which the desired protein causes lysis of the bacterial cells so that the contents of the cells can be released, or in which the desired protein is an enzyme involved in flavour formation, or in which the desired protein has a function in a cheese production process, such as chymosin or a precursor thereof, or an enzyme involved in flavour formation.
摘要:
The invention provides a process for the lysis of a culture of lactic acid bacteria, or a product containing such culture e.g. cheese, by means of a lysin through the in situ production of a homologous autolysin, or a heterologous autolysin obtainable from Gram-positive bacteria esp. from lactic acid bacteria. The gene encoding said autolysin is controlled by a promoter, preferably regulated by food-grade ingredients or parameters, to achieve an enhanced lysis after induction resulting in an enhanced production of total autolysin compared with the natural production lever of the homologous autolysin during fermentation or shortly thereafter. Other uses of the invention include preparing a mixture of peptides which are modified by peptidases freed after the lysis, using the autolysin as a bactericidal agent against spoiling bacteria or pathogenic bacteria for improving the shelf life of a product containing the lysed culture.
摘要:
The present invention provides a method of preparing an edible product comprising non-viable bacteria providing a health benefit, the method comprising subjecting viable bacteria to at least two sub-lethal treatments to obtain the non-viable bacteria providing a health benefit, each sub-lethal treatment on its own not being sufficient to render the bacteria non-viable. The method porvides non-viable bacteria providing health benefits but which can conveniently be incorporated into a range of edible products.
摘要:
The present invention related to heavy chain immunoglobulins or fragments thereof of the VHH or VNAR type, or domain antibodies (dAbs) of the heavy or light chains of immunoglobulins or fragments thereof, suitable for use in the management of infections, in particular gastrointestinal tract. The present invention also relates to a delivery system comprising these heavy chain immunoglobulins or functional fragments thereof of the VHH or VNAR type, or domain antibodies (dAbs) of the heavy or light chains of immunoglobulins or fragments thereof, and hosts comprising expression vectors encoding for these heavy chain immunoglobulins or functional fragments thereof of the VHH or VNAR type, or domain antibodies (dAbs) of the heavy or light chains of immunoglobulins or fragments thereof. The invention also related to food products and pharmaceutical preparations comprising the delivery system, and method for the preparation of food products according to the invention.
摘要:
A method for preparing a milk-based composition comprising a homopolysaccharide is provided whereby a mixture comprising milk and fermentable sugar is fermented with a homopolysaccharide-producing microorganism under anaerobic conditions, without regulating the pH, and the fermentation is stopped before the pH of the mixture drops below pH 5.5. Food products comprising such compositions are also provided.
摘要:
One aspect of the present invention relates to an edible product containing: • probiotic bacteria in an amount of at least 103 bacteria per gram; and • at least 0.5 mg/g of ginseng polysaccharides containing at least 2 monosaccharide units, preferably at least 4 monosaccharide units. Another aspect of the invention relates to the use of the aforementioned product in therapeutic and prophylactic treatments. The present invention further provides a method of producing a packaged liquid edible product containing probiotic bacteria and ginseng polysaccharides in the aforementioned amounts.
摘要:
The present invention relates to heavy chain immunoglobulins or fragments thereof of the VHH or VNAR type, or domain antibodies (dAbs) of the heavy or light chains of immunoglobulins or fragments thereof, suitable for use in the management of infections, in particular of the gastrointestinal tract. The present invention also relates to a delivery system comprising these heavy chain immunoglobulins or functional fragments thereof of the VHH or VNAR type, or domain antibodies (dAbs) of the heavy or light chains of immunoglobulins or fragments thereof, and hosts comprising expression vectors encoding for these heavy chain immunoglobulins or functional fragments thereof of the VHH or VNAR type, or domain antibodies (dAbs) of the heavy or light chains of immunoglobulins or fragments thereof. The invention also relates to food products and pharmaceutical preparations comprising the delivery system, and methods for the preparation of food products according to the invention.
摘要:
The present invention relates to food products or pharmaceutical preparations comprising antibodies or antibody fragments which are active in the gut and probiotic micro-organisms independent from the antibodies or antibody fragments. In particular, the invention relates to a method for preparing food products and pharmaceutical preparations comprising the antibodies or antibody fragments and probiotic micro-organisms and the use of these products to deliver health benefits to humans.
摘要:
A multivalent antigen binding protein comprises a single polypeptide chain comprising, in series, two or more single domain binding units which are preferably heavy chain variable domains derived from an immunoglobulin naturally devoid of light chains. Methods for their production and uses thereof, in particular for diagnosis, immunoassay and purification methods are disclosed.
摘要:
A method of inhibiting viral infection using a monovalent antigen binding protein comprising a single domain binding unit capable of binding to a virus is described. Preferably the protein is a heavy chain variable domain derived from an immunoglobulin naturally devoid of light chains. Food, pharmaceutical and cosmetic products comprising such proteins are also described together with a method for selecting inhibiting proteins from a large population of mainly containing non-inhibiting, but infectious agent binding fragments.