11 results about "GRAPEFRUIT PEEL" patented technology

This invention discloses a modified grapefruit peel-based carbon aerogel, its preparation method, and its applications, belonging to the field of adsorbent preparation technology. The preparation method involves placing the grapefruit peel-based carbon aerogel in a potassium hydroxide solution and stirring at 75–85°C for 2.5–3.5 hours. After stirring, the mixture is filtered and dried, then calcined at 850–950°C for 1–1.5 hours in a nitrogen atmosphere. This invention solves the problems of low adsorption capacity and poor selectivity in current adsorbent materials. The modified grapefruit peel-based carbon aerogel electrode exhibits preferential selectivity for nitrates and phosphates. The invention utilizes capacitive deionization technology, resulting in low energy consumption and cost savings. The electroadsorption system electrode uses grapefruit peel as a raw material, which is widely available, convenient, and inexpensive. The resulting biomass-based carbon aerogel has the advantages of being renewable, biodegradable, and rich in carbon sources. It also enables the recycling of waste grapefruit peels, making it an environmentally friendly renewable material.

This utility model relates to the field of fuel cell technology, and in particular to a buffer device for a solid oxide fuel cell stack with overheat protection and combined heat and power functions. A biomimetic grapefruit peel structure protective shell is provided between the solid oxide fuel cell stack and several helical spring components. Several symmetrically arranged metal liquid cooling pipes are located on the biomimetic grapefruit peel structure protective shell along the fuel flow direction. A temperature sensor connected to the liquid cooling system is installed inside the biomimetic grapefruit peel structure protective shell to collect the internal temperature signal of the solid oxide fuel cell stack and control the start / stop and flow rate of the cooling water in the metal liquid cooling pipes. The outermost layer of the biomimetic grapefruit peel structure protective shell is resistant to mechanical vibration and has good thermal insulation, providing a good buffering effect while reducing heat loss from the stack. Smaller pores are provided in the middle layer, and larger pores are provided in the inner layer, improving the system's buffering efficiency through the porous structure. The metal liquid cooling pipes are located within the middle layer of the protective shell, achieving efficient heat conduction.

This invention relates to the field of food processing equipment, and more particularly to a high-temperature debittering equipment for grapefruit peel food processing. The equipment includes a main body with covers fixedly connected to both the left and right sides of the top surface, and water storage tanks fixedly connected to both the front and rear sides of the top surface. A soaking tank is fixedly connected between the left and right covers and the front and rear water storage tanks. An intermittent water injection component is installed inside the left cover, and a waste liquid extraction component is installed inside the right cover. The soaking tank contains a squeezing dehydration component and a bubbling aeration component. The intermittent water injection component is connected to both the water storage tank and the soaking tank. This equipment achieves automated cyclic control of the high-temperature debittering process of grapefruit peel through the coordinated operation of its components. A first hydraulic cylinder drives a squeezing baffle to periodically squeeze the grapefruit peel, forcibly expelling the high-concentration bitter liquid remaining in its internal pores, effectively avoiding the problem of incomplete debittering caused by saturated backflow of bitter substances, and significantly improving the debittering efficiency and uniformity.

The application discloses a preparation method of an adsorbing material for sulfuric acid decolorization, the material and application, and relates to the following steps: firstly, putting a pomelo peel into a pulverizer to obtain pomelo peel powder, and then mixing the pomelo peel powder with a sodium hydroxide solution to obtain pomelo peel cellulose; then, mixing the pomelo peel cellulose with bentonite at a mass ratio of 1:0.8-1.2, adding a crosslinking agent, stirring, and then performing ultrasonic dispersion in an ultrasonic cleaner to obtain a gelatinous substance; finally, cutting the gelatinous substance into particles, and drying the particles to obtain a pomelo peel bentonite-based adsorbing material. The adsorbing material obtained by the method has good adsorbing performance, high sulfuric acid decolorization capacity, and large particle size, and is easy to recover.

The application belongs to the field of food packaging, and particularly relates to a functional composite film based on full-component utilization of pomelo peel and application thereof. The pomelo peel is separated into water-soluble active components (supernatant) and water-insoluble components (precipitate), and polyvinyl alcohol / supernatant films and polyvinyl alcohol / precipitate films are prepared by compounding the water-soluble active components and the water-insoluble components with polyvinyl alcohol, respectively. The polyvinyl alcohol / supernatant film has excellent antioxidant activity and flexibility, and the polyvinyl alcohol / precipitate film has excellent antibacterial property and mechanical strength. The two kinds of films can be used alone or in combination according to the preservation requirements of different foods, so as to achieve targeted preservation effect. The application realizes high-value utilization of the full components of pomelo peel, and the prepared composite film is biodegradable, and has wide application prospect in the field of food packaging.

This invention relates to the preparation and application of carbon dot-functionalized lanthanide metal-organic framework materials for the detection of permanganate ions in water: S1, selecting raw materials: europium nitrate, trimesic acid, and grapefruit peel; S2, dissolving trimesic acid in anhydrous ethanol and stirring; S3, adding europium nitrate solution to the solution obtained in S2 and stirring; S4, allowing to stand, centrifuging to collect the white precipitate, washing and drying to obtain a white lanthanide metal-organic framework material; S5, drying and crushing grapefruit peel, adding deionized water, and transferring to a high-pressure reactor for reaction; S6, centrifuging the solution obtained in S5, taking the supernatant and filtering it through a microporous membrane; S7, dialysis purification of the solution obtained in S6 to obtain a pale yellow carbon dot solution; S8, mixing the carbon dot solution obtained in S7 with the lanthanide metal-organic framework material in S4 to obtain a carbon dot-functionalized lanthanide metal-organic framework material; S9, using the material obtained in S8 for the detection of permanganate ions in water.

This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment agent, comprising the following components by weight percentage: 28%-30% magnetic grapefruit peel biochar; 20% visible light-responsive catalyst; 15% mussel-inspired flocculant; 20%-25% bioactive module; 10%-12% intelligent slow-release carrier; and synergistic additives, wherein the synergistic additives include 0.5%-2% methyl salicylate and 1%-3% humic acid-modified carbon quantum dots. The wastewater treatment agent of this invention achieves highly efficient COD removal, heavy metal adsorption, and microbial protection functions through the synergistic effect of multiple components. It exhibits excellent regeneration performance and is suitable for various water quality conditions (including high-salinity environments).

The present application relates to a kind of method for prolonging green gourd drink shelf life by red grapefruit powder, the present application will red grapefruit powder and green gourd drink collocation, both have synergistic effect is very good digestion, clearing heat and eliminating toxicity, improve appetite and nutritional supplement drink.It is second, if can successfully apply grapefruit peel to beverage, will greatly reduce grapefruit peel waste, play the role of environmental protection, and the preparation process of natural high purity red grapefruit antioxidant is simple and economic, very suitable for the simple improvement of product and process of food enterprise.In addition, this drink has specific functional characteristics, meets the "big health" direction of "food and medicine homology".Finally, the present application proves that temperature and particle size are influenced by the rule of red grapefruit antioxidant, provides basis for the production of other natural antioxidants, has very high practical value.

This invention discloses a continuous drying and shaping equipment and process for pomelo peel fruit cake, relating to the field of pomelo peel fruit cake production technology. It includes a support frame and a fruit cake tray. A conveyor is installed on the support frame to transport the fruit cake tray from left to right. A drying box is fixed on the support frame, and a positioning mechanism is also fixed on the support frame to clamp and fix the fruit cake tray. In this continuous drying and shaping equipment and process, the positioning mechanism, through the coordinated action of a first cylinder, a support platform, a clamping plate, an inclined plate, and a spring, achieves automatic positioning and clamping of the fruit cake tray. During the lifting of the support platform, the limiting effect of the inclined plate on the side plate causes the clamping plate to open first, facilitating precise tray alignment. When the support platform rises to the designated position, the clamping plate automatically resets under the action of the spring, effectively ensuring the stable subsequent degassing and leveling of the pomelo peel fruit cake.

This invention relates to edible sauces, specifically to a grapefruit wasabi sauce and its preparation method. The preparation method includes: preparing grapefruit juice, grapefruit oil, and grapefruit peel derivatives; cutting wasabi rhizomes and leaves into pieces, mixing with grapefruit juice, pre-cooling, grinding, adding grapefruit oil, and homogenizing to obtain a preliminary sauce; adjusting the pH with whey protein solution, adding tea polyphenols, and dispersing to obtain a suspension; dispersing grapefruit peel derivatives in water to obtain a dispersion, mixing with the suspension, adjusting the pH, and stirring to obtain a composite granular material; adding the composite granular material to the preliminary sauce and dispersing to obtain a semi-finished product; adding granular wasabi, salt, sweetener, and grapefruit pulp, stirring, and filling to obtain grapefruit wasabi sauce. The wasabi sauce prepared by this invention can effectively retain the flavor components ITCs of wasabi, and still has a high content of ITCs after long-term storage; the addition of grapefruit pulp and sweetener to the sauce neutralizes the spiciness and enhances the overall flavor complexity and roundness.

This invention discloses an iron-nitrogen co-doped carbon material for the adsorption and catalytic degradation of phenol, its preparation method, and its applications. The preparation method includes the following steps: using grapefruit peel as raw material, the material undergoes oxidation, pre-amidation, metal-organic framework loading, inert atmosphere calcination, and activation to obtain the iron-nitrogen co-doped carbon material. This method is economical and environmentally friendly. The prepared material has a hierarchical pore structure and a nitrogen-rich structure, with a specific surface area of ​​365.35 m² / g. The pore size matches the phenol molecule, resulting in rapid mass transfer. The iron-nitrogen co-doped carbon material can achieve a saturated adsorption capacity of 186.6 mg / g for phenol and can catalytically degrade phenol through its stable Fe-N active sites, realizing integrated "adsorption-degradation" and avoiding secondary treatment. The material has a stable structure, is resistant to acids and alkalis, and maintains a high adsorption capacity even after multiple cycles, making it suitable for the efficient treatment of phenol-containing wastewater.