Abstract: A method for preparing beta-carotene from pepper pigment includes: (1) enzymatic hydrolysis of paprika oleoresin to obtain a paprika red pigment hydrolysate; (2) extraction of the paprika red pigment hydrolysate to obtain a paprika red pigment solution; (3) refined filtration to obtain a paprika red pigment filtrate; (4) adsorption: carrying out chromatographic separation with a medium-pressure silica gel chromatographic column, and collecting an effluent from the chromatographic column; (5) elution of beta-carotene; (6) elution of yellow pigments; (7) elution of red pigments; and (8) elution of orange pigments. The invention combines enzymatic hydrolysis with medium-pressure column chromatography for the first time, where chromatographic silica gel with smaller particle size is used for adsorption, and four-stage elution treatment is carried out, so that beta-carotene with a content of more than 20% can be directly separated, and at the same time, reddish paprika red pigment with higher quality is prepared.

Abstract: The invention provides a bread with D-allulose instead of sucrose and a preparation method therefor, and relates to the technical field of food processing. The starting materials include, in parts by weight: 40-60 parts of flour, 3-5 parts of gluten powder, 5-10 parts of D-allulose, 5-10 parts of eggs, 5-10 parts of milk, 3-5 parts of yeast, 4-6 parts of butter, 0.4-0.6 parts of composite bacterial powder, and 15-25 parts of water. The yeast is fresh yeast. The composite bacterial powder includes one or more of Lactobacillus acidophilus, Lactobacillus casei, Lactobacillus rhamnosus, Bifidobacterium longum and Bifidobacterium lactis. Replacing sucrose with D-allulose in bread does not affect the normal proofing of bread dough, and the baked bread is fluffy and soft, sweet, and delicious, has good color, aroma, and taste. Because D-allulose has the advantages of low calorie and low blood sugar response, consumers' pursuit of “healthy eating” is met.

Abstract: Disclosed is a liquid crystal medium containing a 2,4-diflurophenyl compound and the use thereof. The liquid crystal composition comprises the compounds as represented by formula I and formula II. The liquid crystal composition has a low rotary viscosity, good chemical and thermal stability and a fast response speed, it is suitable for a liquid crystal display device and particularly suitable for the use in an active matrix display of a TN, IPS or FFS mode.

Abstract: Disclosed is a liquid crystal medium containing a 2,4-diflurophenyl compound and the use thereof. The liquid crystal composition comprises the compounds as represented by formula I and formula II. The liquid crystal composition has a low rotary viscosity, good chemical and thermal stability and a fast response speed, it is suitable for a liquid crystal display device and particularly suitable for the use in an active matrix display of a TN, IPS or FFS mode.