4results about How to "Improve gel performance" patented technology

This invention discloses a method for improving the gelling properties of low-sugar jam using high molecular weight citrus pectin, and the resulting low-sugar jam, belonging to the field of food processing technology. While existing steam explosion technology can increase pectin extraction rate, it reduces the molecular weight of pectin from 318.41 kDa to 48.26 kDa, deteriorating the jam's gelling properties. This invention first extracts high molecular weight pectin from citrus peel pomace using dry ice in-situ explosion technology—dry ice sublimates in a sealed container at room temperature, generating a volume expansion effect, and performing a purely physical explosion from within the cell walls, completely avoiding the damage to the covalent bonds of pectin caused by high temperatures. The resulting pectin has a molecular weight ≥280 kDa and a galacturonic acid content ≥86%. This pectin is then directly used in the preparation of low-sugar jam, utilizing its long molecular chain characteristics to form a denser three-dimensional network structure under calcium ion crosslinking. Experiments show that the jam of this invention has a 150% higher hardness than that using conventional low molecular weight pectin, and a water retention rate of 98.8% at 4℃, achieving high-value utilization of citrus peel pomace and a significant improvement in the quality of low-sugar jam.

The application provides a preparation method for improving the gel performance of sturgeon myofibrillar protein, and belongs to the technical field of food processing.The preparation method for improving the gel performance of sturgeon myofibrillar protein provided by the application comprises the following steps: extracting myofibrillar protein in sturgeon meat to obtain a sturgeon myofibrillar protein solution; performing ultrasonic treatment and malondialdehyde induction treatment on the sturgeon myofibrillar protein solution to obtain a composite myofibrillar protein; performing dialysis on the composite myofibrillar protein to obtain a modified protein solution; and performing heat induction on the modified protein solution to obtain sturgeon myofibrillar protein gel.The preparation method can effectively improve the water retention and energy storage modulus of the sturgeon myofibrillar protein gel, so that the water retention capacity and deformation resistance of the gel are significantly enhanced, and the application of the sturgeon myofibrillar protein in gel-based products has an important role.

This invention discloses a Chlamydomonas reinhardtii synergistic exosome hydrogel microneedle, its preparation method, and its application, belonging to the field of biomedical materials and microneedle delivery technology. The hydrogel microneedles prepared in this invention use methacryloxymethyl carboxymethyl chitosan and methacryloxyhyaluronic acid as the hydrogel matrix. After adding a photoinitiator to the hydrogel matrix, the microneedles are obtained through molding and ultraviolet crosslinking. The tips of the hydrogel microneedles are loaded with Chlamydomonas reinhardtii exosomes to improve transdermal delivery efficiency. The backing layer or matrix portion of the hydrogel microneedles is loaded with Chlamydomonas reinhardtii to maintain its photosynthetic activity and provide continuous local oxygen supply. This invention constructs a multifunctional therapeutic system for the synergistic effect of Chlamydomonas reinhardtii and exosomes. This system integrates in-situ photosynthetic oxygen supply, exosome anti-inflammatory repair, and local microneedle delivery onto the same platform, and can simultaneously intervene in key aspects of osteoarthritis such as hypoxia, inflammation, and insufficient tissue repair, showing promising application prospects.

The application relates to an anion crosslinking salt-resistant polyacrylamide and a preparation method thereof, raw materials of the oil phase and the water phase are used in the preparation method, the oil phase raw materials comprise Span 80, Tween 80 and white oil, the water phase raw materials comprise monomers and auxiliaries, the monomers comprise acrylamide and 2-acrylamide-2-methylpropanesulfonic acid. The stable three-dimensional network structure is constructed through the synergy of ternary monomers and moderate crosslinking, the product has high viscosity retention rate under high mineralization, excellent temperature resistance and shear resistance, fast dissolving speed, strong sand suspending capacity, and is suitable for the fracturing construction requirement of deep high-temperature high-salt oil and gas reservoirs.