5results about How to "Prevent oxidative rancidity" patented technology

The application discloses black soldier fly oil freeze-dried liposomes and a preparation method thereof. The preparation method of the black soldier fly oil freeze-dried liposomes comprises the following steps: dissolving phospholipid, sterol, black soldier fly oil and a surfactant in an organic solvent to form a film, hydrating the film with a buffer solution, and preparing nano-liposomes through pulse ice bath ultrasonic treatment; adding a freeze-drying protective agent, uniformly mixing, pre-freezing, and freeze-drying, so as to obtain the black soldier fly oil freeze-dried liposomes. The stability of the black soldier fly oil is remarkably improved through the freeze-drying process, long-term storage of the liposomes at room temperature is realized, and a new strategy is provided for the development of a functional oil delivery system.

This invention discloses a nervonic acid-rich *Xanthoceras sorbifolium* diester oil and its preparation method, belonging to the field of oleochemical technology. The invention first removes some long-chain monounsaturated free fatty acids from *Xanthoceras sorbifolium* oil through saponification and low-temperature settling. Then, porous organic polymer materials are used to further enrich nervonic acids with higher molecular weight and larger particle size. Glycerol is added to the free fatty acids, and esterification with lipase catalyzes the synthesis of diglycerides, thus obtaining a nervonic acid-rich *Xanthoceras sorbifolium* diester oil. The addition of a compound antioxidant effectively prevents oxidative rancidity of the diester oil. The *Xanthoceras sorbifolium* diester oil prepared by this invention has a rich nervonic acid content, a high diglyceride content, and excellent thermal stability, thus showing good application prospects and value in the field of oleochemicals.

The application discloses a buffer type filling storage tank for diesel anti-wear agent production and relates to the technical field of material storage containers. The buffer type filling storage tank comprises a tank body with a feeding port and a discharging port. The buffer type filling storage tank further comprises a feeding pipe vertically arranged in the tank body, a top end of the feeding pipe being communicated with the feeding port and a bottom end of the feeding pipe being located above the bottom of the tank body. A plurality of guide pipes are arranged along the feeding pipe in a ring shape and are parallel to the feeding pipe, and the guide pipes rotate along an axis. A float plate is sleeved outside the feeding pipe and the guide pipes and floats along a liquid surface in the tank in a vertical direction. A first rotating part is rotationally connected to an outer peripheral edge of the float plate. A second rotating part is rotationally connected to an upper portion of a middle part of the float plate. The buffer type filling storage tank is driven by the flowing energy of feeding liquid and does not need external power. Foam generation is reduced by bottom feeding, and active defoaming of a liquid surface is cooperatively matched, so that active physical elimination of the foam of the liquid surface is realized, and filling precision and product quality are improved.

The utility model relates to food processing technical field discloses a kind of flow guide devices for small ground sesame oil production, including rack, multiple grinding bodies are respectively arranged with interval in rack, flow guide groove body is set between front and back two sides grinding body, the inclined flow guide disc is set on each mill, and oil outlet is equipped on flow guide disc, scraper oil mechanism is set in flow guide groove body, control mechanism is set on flow guide groove body, and control scraper oil mechanism moves along flow guide groove body front and back.The utility model cooperates with flow guide disc and flow guide groove body by setting multiple grinding bodies in rack, so that the sesame oil produced by each grinding body can be quickly and accurately flowed into flow guide groove body through the oil outlet of inclined flow guide disc, realize the centralized collection of multiple grinding body oil outlet, solve the problem that traditional device oil collection lacks efficient guidance and concentration;And the setting of scraper oil mechanism and control mechanism can clean residual oil in flow guide groove body in time, avoid residual oil oxidation rancidity, improve raw material utilization, and guarantee product quality.

The invention belongs to the technical field of food processing, and discloses a preparation method of a mild sterilization surimi product based on a plant source composite bacteriostatic agent. The method sequentially comprises the steps of raw material pretreatment, three-stage chopping and mixing, vacuum degassing, forming, gradient gelation, composite mild sterilization, low-temperature drying, vacuum packaging and the like. Plant source antibacterial components such as honeysuckle flower extract, tea polyphenol, epsilon-polylysine and the like are compounded and added, and a mild sterilization system prevents the quality of the minced fillet from being damaged by high temperature. Meanwhile, the gel strength, the water-retaining property and the sensory quality of the surimi product are improved by utilizing the anti-oxidation and flavor blending characteristics of the plant source components, and the product is stored for more than 6 months at normal temperature, so that the natural nutrition and fresh and tender taste of the surimi are reserved.