摘要:
A process for the extraction of carotenoid dyes from pre-dried natural starting materials is described using compressed gases such as propane and/or butane in which organic entraining agents can be additionally added in order to facilitate and complete the extraction process. With the aid of this process highly concentrated carotenoid dyes are obtained in high yield.
摘要:
A process for the extraction of fats and oils from natural substances using liquid propane as the solvent is described in which the extraction is carried out at a pressure of 10 to 30 bar and a temperature of 10.degree. to 55.degree. C. and the separation of the extracted fats and oils from the solvent is carried out by means of pressure reduction or/and temperature increase to .ltoreq.80.degree. C. High quality products are isolated in this way in a good yield and under mild conditions.
摘要:
The present invention provides a process for the production of fat- and cholesterol-reduced powdered products based on eggs with a high content of phospholipids by extraction with compressed gases, wherein the powdered starting material is extracted with a solvent mixture consisting of propane and carbon dioxide with a mixing ratio of 95/5 to 5/95% by weight at a pressure of
摘要:
A process is described for obtaining lipid fractions from egg products in powder form with a content of phospholipids in which the egg product is a) firstly extracted with liquid propane at a pressure of.ltoreq.200 bar and a temperature of.ltoreq.70.degree. C. and b) subsequently with a mixture of liquid propane and an entraining agent composed of an aliphatic alcohol with 1 to 4 C atoms. In this way it is possible to produce lipid fractions with good sensory properties whose content of phospholipids is at least 25% by weight and up to 80% by weight.
摘要:
A process is described for the production of egg-based products in powder form with a reduced fat and cholesterol content in which the starting material in powder form is extracted with liquid propane at a pressure of .ltoreq.200 bar and at a temperature of .ltoreq.70.degree. C. In this way low-cholesterol and low-fat egg powder products with good sensory properties are produced without the phospholipids and in particular lecithin being removed to a substantial extent in this process.
摘要:
A process for the isolation of lipid fractions from egg products in powder form with a content of phospholipids is described in which the egg product is extracteda) with liquid propane at a pressure of .ltoreq.200 bar and a temperature of .ltoreq.70.degree. C. andb) an entraining agent consisting of an aliphatic alcohol with 1 to 4 C atoms.In this way it is possible to produce lipid fractions with good sensory properties whose content of phospholipids is at least 20% by weight.
摘要:
A process for the production of egg yolk with a reduced cholesterol content, whereina) the egg yolk is diluted by the addition of water or of an aqueous salt solution,b) cholesterol and cholesterol esters which are contained in the diluted egg yolk are selectively complexed with .beta.-cyclodextrin,c) the .beta.-cyclodextrin loaded with cholesterol and/or cholesterol esters are separated from the diluted egg yolk,d) the added water is removed from the egg yolk,e) the residual amounts of .beta.-cyclodextrin present in the egg yolk are decomposed enzymatically with the help of .alpha.-amylase and/orf) the .beta.-cyclodextrin is recovered by treatment with water and/or an alcohol from the .beta.-cyclodextrin complexes and optionally returned to step b).
摘要:
Cholesterol and cholesterol esters are removed from egg yolk by a process whereina) optionally after the addition of an emulsion-breaking agent to the egg yolk, the egg yolk plasma is separated from the LDL-granula fraction,b) cholesterol and cholesterol esters which are contained in the egg yolk plasma are adsorbed on a solid adsorption agent andc) the solid material loaded with cholesterol and/or cholesterol esters is separated from the liquid plasma phase and optionally the egg yolk plasma and the separated granula fraction are again mixed together.
摘要:
Terpenes are removed from essential oils by(a) contacting terpene-containing essential oils with a polar solid (adsorbent);(b) separating the loaded adsorbent from the liquid phase enriched with terpenes; and(c) subjecting the adsorbent loaded with essential oils to an extraction with compressed carbon dioxide.
摘要:
The present invention provides a process for the production of highly concentrated fruit aromas from condensed fruit vapours, whereina) the fruit aromas in the fruit vapours are concentrated to a content of 0.05 to 1% by weight according to known methods,b) the concentrate from step a) is subjected to an extraction with compressed carbon dioxide at 60 to 180 bar and 10.degree. to 50.degree. C., andc) after decompression of the carbon dioxide and optionally after the addition of water, the aromarich oily phase is separated from the aroma-poor aqueous phase.