254 results about "Sweet Potatos" patented technology

The invention provides a composition for assisting in reducing blood sugar and improving insulin resistance and a preparation method of the composition, and relates to the technical field of functional fiber processing. The composition for assisting in reducing blood sugar and improving insulin resistance comprises the following raw materials in parts by weight: 10-15 parts of depolymerization type composite cereal fibers, 3-5 parts of konjac fibers, 3-5 parts of psyllium husk powder, 2-3 parts of sesame powder, 1-2 parts of xylitol and 0.1-0.5 part of vitamin C, the mass ratio of wheat fiber to corn fiber to sweet potato fiber to pea fiber in the depolymerization type composite grain fiber is (25-30): (35-40): (20-25): (10-15). The composition disclosed by the invention can assist in reducing blood sugar and has a good effect of improving insulin resistance.

The invention relates to a saline-alkali soil improver, and belongs to the field of saline-alkali soil treatment, and the saline-alkali soil improver comprises the following substances by weight: 15-20 parts of amino-oligosaccharin; 4 to 6 parts of astragalus oligosaccharide; 3-5 parts of ligusticum chuanxiong hort oligosaccharide; 6-8 parts of soybean oligosaccharide; 2-4 parts of Chinese wolfberry oligosaccharide; 20 to 30 parts of modified polyaspartic acid; 3-5 parts of a complex microbial inoculant; 4-6 parts of calcium carbonate; and 30-40 parts of sweet potato starch production residual peel residues. The amino-oligosaccharin, the astragalus oligosaccharide, the ligusticum chuanxiong hort oligosaccharide, the soybean oligosaccharide and the Chinese wolfberry oligosaccharide are added, so that the effects of promoting plant growth, improving soil quality and enhancing the salt resistance of plants can be achieved; through the synergistic effect of various oligosaccharides, effective microbial communities in soil can be activated, regeneration of harmful microbial communities can be inhibited, soil nutrition can be increased, the soil structure can be improved, the immunity of plants can be improved, and plant diseases and insect pests can be reduced, so that the fertility of the soil and the growth environment of the plants can be improved, and the growth of the plants can be promoted.

The invention discloses bamboo fiber full-biodegradable tableware which is prepared from the following components in parts by weight: 40-50 parts of poly (butylene succinate), 15-20 parts of bamboo fiber, 12-16 parts of sweet potato starch, 8-12 parts of sodium alginate and the like, the bamboo fiber is pretreated by a sodium hydroxide solution, and montmorillonite is modified by a silane coupling agent KH-570. The preparation method comprises the steps of high-speed mixing, twin-screw extrusion granulation, injection molding, drying, ultraviolet sterilization and the like, five temperature zones are set for twin-screw extrusion, and the injection molding temperature is controlled to be 165-175 DEG C. The hydrophobicity is improved without depending on silicone oil and the like, and the synergism of mechanics and degradability is better; high-temperature heating is not needed, energy consumption is lower, and antibacterial and mildew-proof functions are added. The 60-day biodegradation rate of the tableware is larger than or equal to 95%, the tensile strength is larger than or equal to 26 MPa, and the tableware has excellent water resistance and oil resistance and meets the requirements for environmental protection and use.

The cultivator for sweet potato planting comprises a supporting frame dragged to the tail of an agricultural tractor, a first transmission case is installed in the middle of the supporting frame, second transmission cases are installed on the two sides of the supporting frame, and the first transmission case and the second transmission cases are connected through universal shafts. A soil turning claw is driven by the second transmission case corresponding to the bottom of the support frame, a furrow opener is mounted on the support frame corresponding to the rear side of the soil turning claw, the furrow opener comprises two side turning plates, and the free ends of support rods corresponding to the two side turning plates are adjustably fixed through bolts and are used for adjusting the opening angles of the two side turning plates. The furrow opener can be adjusted in a lifting mode, meanwhile, the distance between the turning plates on the two corresponding sides can be adjusted through the supporting rods, the ends of the supporting rods are fixed through the bolts after adjustment, the opening width of the turning plates can be adjusted, and different planting requirements are met.

1. The name of the design product: sweet potato cutting machine. 2. The use of the design product: for cutting sweet potato into pieces. 3. The design points of the design product: in the perspective view. 4. The picture or photo that best indicates the design points: perspective view.

The utility model relates to the technical field of sweet potato vermicelli, and discloses a sweet potato vermicelli forming device which comprises a placing table, a U-shaped positioning frame is fixedly installed at the upper end of the placing table, L-shaped frames are fixedly connected to the two sides of the U-shaped positioning frame respectively, lead screws are rotatably installed on the inner walls oppositely arranged above the two L-shaped frames, and U-shaped blocks are installed on the outer walls of the lead screws in a threaded mode. The same V-shaped plane is rotationally mounted on the inner top wall and the inner bottom wall of the U-shaped block, the lead screw is driven by the driving mechanism to rotate in a reciprocating mode, then the lead screw conveniently drives the U-shaped block to move in a reciprocating mode under the cooperation of the guiding mechanism, the U-shaped positioning frame can play a role in limiting starch balls, then the starch balls are pushed under the cooperation of the pushing mechanism, and therefore the starch balls can be conveniently pushed. And the stepping motor can drive the V-shaped plane to adjust the orientation, so that the starch dough can be continuously shredded when the V-shaped plane resets, and the shredding efficiency of the sweet potato vermicelli is improved.

The invention relates to the technical field of sweet potato leaf extraction, in particular to a system and method for obtaining sweet potato leaf extract from sweet potato leaves, the system comprises a bottom plate, a charging barrel capable of generating high pressure inside and a target barrel, the charging barrel and the target barrel are installed on the bottom plate, a top ring is fixedly connected between the charging barrel and the target barrel, and the bottom end of the top ring is fixedly connected with an extraction chamber; the inner side of the extraction chamber is slidably connected with a piston part, two sides of the top end of the extraction chamber are communicated with jet pipes, the two jet pipes are respectively communicated with an outflow pipe and a suction pipe, an outlet of the outflow pipe extends into the target cylinder, and the interior of each jet pipe is of a microporous structure and is used for realizing rapid change of feed liquid pressure and increasing turbulent flow; the reduction of the liquid level and the pressure in the barrel can influence the diameter of bubbles in the charging barrel, so that the extraction and separation effect is influenced, the size of the bubbles can be ensured to be within a stable range, and the mixing and extraction effect is ensured.

The invention provides an integrated intelligent management and control system for storage, sterilization, corrosion prevention and fresh keeping of sweet potatoes, and relates to the field of agricultural science and technology and Internet of Things application, and the system comprises a data recording and storage module which is configured to record and store environment data in real time; the data acquisition module is configured to monitor environmental parameters of a sweet potato storage environment in real time; the central processing module is configured to generate a control instruction; the system control module is configured to convert the control instruction into an execution instruction and send the execution instruction to the terminal execution module; the terminal execution module is configured to generate an execution strategy according to the execution instruction and regulate and control environmental parameters of the sweet potato storage environment according to the execution strategy; a user interface module configured to provide an interface to interact with a user; and the communication integration module is configured to be in wireless connection with each system module so as to carry out data transmission. Omnibearing protection and management of the sweet potatoes in the storage period can be achieved, the fresh-keeping period of the sweet potatoes is effectively prolonged, and the commercial value of the sweet potatoes is improved.

The utility model relates to the technical field of agricultural and sideline product processing, in particular to a sweet potato starch extraction device which comprises a barrel body, a valve and a lifting assembly, a containing cavity with an opening in the top end is formed in the middle of the barrel body, and a filtering assembly used for containing and filtering sweet potato residues in the using state is arranged on the inner side of the containing cavity of the barrel body; the lifting assembly is arranged on the side face of the barrel body and extends towards the middle of the barrel body, and a spinning assembly extending towards the inner side of the filtering assembly is arranged at the top end of the lifting assembly and located above the barrel body; the valve is installed at the bottom end of the barrel body and communicated with the barrel body. The spinning assembly is moved into the filtering assembly through the lifting assembly, sweet potato residues are in full contact with water through forward rotation of the spinning assembly, starch is fully dissolved in the water, meanwhile, the spinning assembly is rotated reversely, the sweet potato residues are moved towards the bottom end of the inner side of the filtering assembly and extruded, and starch in the sweet potato residues is extracted thoroughly; and the starch extraction efficiency is improved.

The utility model discloses a separating device for sweet potato harvesting. The separating device comprises a screening mechanism and a driving motor installed on one side of the screening mechanism. A vibrating mechanism and a servo motor mounted in the vibrating mechanism are arranged on one side of the screening mechanism; the screening mechanism comprises traction equipment, one end of the traction equipment is fixedly connected with a connecting seat, and the bottom of the connecting seat is rotationally connected with a hydraulic telescopic rod; wherein the output end of the hydraulic telescopic rod is rotationally connected with a guide plate, one end of the guide plate is rotationally connected with a support, the front side and the rear side of the connecting base are fixedly connected with supporting rods, sweet potatoes can be screened by arranging the screening mechanism, sweet potato vines and a large amount of soil are prevented from being collected together, and therefore the practicability of the device is improved; by arranging the vibrating mechanism, the bracket can be always in a vibrating state, so that the falling of soil blocks is ensured, and the blockage phenomenon of the first conveying frame and the second conveying frame is avoided.

The invention is suitable for the technical field of food processing, and provides soy sauce flavor type hot and sour rice noodles and a preparation method thereof, and the soy sauce flavor type hot and sour rice noodles are composed of fermented vermicelli, fermented seasonings and fermented vegetables; the preparation raw materials of the fermented vermicelli comprise edible starch, and the edible starch is one or a mixture of more of sweet potato starch, potato starch, cassava starch and pea starch. The fermentation seasoning comprises a sauce bag, a powder bag and a vinegar bag; the fermented vegetables comprise one or more of pickled Chinese cabbages, pickled cowpeas, pickled chilies, pickled fresh ginger and pickled bamboo shoots. The sauce-flavor type hot and sour rice noodle seasoning is sauce red in soup color, outstanding in sauce flavor and easy to store and transport.

The utility model provides a sweet potato nematode culture detection device, which relates to the technical field of sweet potato nematode culture and comprises a culture box, a group of movable holes I are formed in the outer surface wall of the culture box, two mounting holes are formed in one side of the outer wall of the culture box, and a bottom plate is fixedly inserted into the inner surface wall of the culture box. According to the sweet potato nematode detection device, when sweet potato nematodes need to be detected, the motor can be started, the motor drives the connecting arm and the lug block on the lower portion to move through the crankshaft, the filter sieve vibrates up and down to shake off the sweet potato nematodes into the collecting box on the lower portion, and a user can take out the sweet potato nematodes only by pulling out the collecting box; the sweet potato nematodes can be conveniently and rapidly collected, the complexity and time cost of manual operation are reduced, possible damage to the sweet potato nematodes caused by a traditional flotation method and the like is avoided, the integrity and health state of the nematodes are guaranteed, and subsequent experiments or applications are facilitated.

This invention discloses a pet food with coat-enhancing, shine-promoting, and coat-protecting effects, its preparation method, and applications. The food comprises the following components: chicken meal, fresh chicken meat, duck meal, sardine meal, chicken liver, sweet potato meal, corn meal, chicken heart, beef bone meal, duck meat pear, chicken oil, and egg yolk granules; coriander root powder, inulin, seaweed powder, beet pulp, flaxseed, fish oil, cranberry powder, carrot, krill, honeysuckle, turmeric, chrysanthemum, mannan oligosaccharide, lactulose, etc. The raw materials and auxiliary ingredients of this pet food are widely available, palatable, inexpensive, and readily available. The coriander root powder, other auxiliary ingredients, and nutritional supplements / additives work synergistically to improve the shine of the pet's coat, promote growth, and maintain coat health, while also improving the microstructure of the hair cuticle, fundamentally preventing pet coat health problems. The pet food preparation method disclosed in this invention is simple to operate, safe, and environmentally friendly, and is particularly suitable for feed products with high humidity and high heat sensitivity.

The invention discloses a soil turning device for sweet potato planting and a soil turning method thereof.The soil turning device comprises a device carrying base, two carrying wheel frames are welded to the lower end of the device carrying base, erected wheel shafts are rotatably arranged in the two carrying wheel frames in a penetrating mode, driving wheels are welded to the two sides of each erected wheel shaft, and ploughing cutter teeth are welded to the driving wheels; twenty-four ploughing cutter teeth are annularly distributed; the equipment bin is arranged in the device carrying seat, an equipment carrying frame is welded to the lower end of the equipment bin, a motor output shaft is rotatably arranged outside the equipment carrying frame in a penetrating mode, a driving gear is welded to the motor output shaft, and a linkage gear is welded to the center of the erecting wheel shaft; and the driving gear is in meshing transmission connection with the linkage gear. According to the soil turning device, field soil is sieved while soil turning is achieved, the soil turning effect on the field soil is improved, and the problem that an existing soil turning device is poor in soil turning effect is solved.

The sweet potato combined harvesting and screening machine comprises a rack, the rack comprises a left supporting plate and a right supporting plate which are symmetrical, a digging shovel inclining downwards is arranged at the front end of the rack, a traction frame connected with traction equipment is installed on the upper surface of the front end of the rack, and walking wheels are rotationally connected to the left side and the right side of the rear end of the rack; a screening assembly is installed in the rack and comprises a screening chain, and the screening chain is driven to operate through a first driving assembly. The rack is further provided with a shaking assembly used for shaking the screening chain, and the shaking assembly is driven to operate through a second driving assembly connected with the first driving assembly. Sweet potatoes can be excavated, conveyed and screened at a time, the harvesting efficiency is improved, the labor intensity is reduced, and meanwhile the screening quality of the sweet potatoes is guaranteed.

1. Name of the product in this design: Automatic mixing and cooking machine. 2. Application of this design: Equipment for stirring and cooking small ingredients for milk tea, such as tapioca pearls, taro, sweet potato, grass jelly, etc. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The utility model belongs to sweet potato seedling cultivation technical field, and disclose a kind of for the transfer device for sweet potato seedling cultivation, including cart, still include: auxiliary fixing structure, it is set to the inside of cart;Fastening structure, it is set to the top of cart, and top is connected with temperature control cultivation structure;The auxiliary fixing structure includes sliding slot frame, the inner wall of sliding slot frame is fixedly installed in the cart, the inner wall sliding connection of sliding slot frame has movable sliding plate, the outer wall of movable sliding plate is equipped with inclined slot;The utility model is equipped with auxiliary fixing structure, by the cooperation of movable sliding plate, reset spring A and other components, can form elastic clamping to temperature control cultivation structure, so that temperature control cultivation structure is closely connected with cart, reduce the temperature control incubator displacement or shaking due to cart shaking in the process of transfer, ensure the stability of sweet potato seedling in cultivation bin.

The utility model discloses a sweet potato vermicelli airing device, and belongs to the technical field of food processing.The sweet potato vermicelli airing device comprises an adjusting assembly, an air drying assembly, a collecting tank and two supporting frames, the two supporting frames are arranged at intervals and can be close to or far away from each other, and a plurality of airing rods are installed at the tops of the two supporting frames and are arranged in a hollow mode; the air drying assembly communicates with the multiple airing rods, and ventilation holes are formed in the multiple airing rods. Rollers are arranged at the bottoms of the two supporting frames, and the collecting tank is arranged at the bottom of one supporting frame. According to the sweet potato vermicelli drying device, air can be blown to the airing rods through the air drying assembly, air output by the air drying assembly is guided to sweet potato vermicelli through the airing rods and the ventilation holes, and therefore the drying speed of the sweet potato vermicelli is increased, and the airing and processing efficiency of the sweet potato vermicelli is effectively improved; the use requirement of airing the sweet potato vermicelli can be fully met through the adjusting assembly, the occupied space can be reduced when the sweet potato vermicelli airing device is not used, the space utilization rate is increased, and storage and storage are convenient.

The invention discloses a pet hair-removing composition containing jerusalem artichoke synanthrin and application of the pet hair-removing composition. Comprising 2-6 parts of jerusalem artichoke synanthrin, 5-10 parts of rhizoma sparganii, 10-20 parts of medicinal jujube, 10-20 parts of medicinal pawpaw and 10-20 parts of euonymus bungeanus. Uniformly mixing chicken oil, olive oil and distilled water; stirring while heating, and homogenizing and emulsifying to obtain a first mixed solution; the rhizoma sparganii, the medicinal jujubes, the medicinal papayas and the euonymus bungeanus are crushed and sieved, mixed powder is obtained, jerusalem artichoke synanthrin, the mixed powder, sodium tripolyphosphate, chicken powder, chicken liver powder, sweet potato starch and the remaining distilled water are added into the first mixed solution, the mixture is stirred to be uniform, and homogenizing emulsification is conducted to obtain the pet hair melting paste. The jerusalem artichoke synanthrin is combined with the traditional Chinese medicines rhizoma sparganii, medicinal jujube, medicinal papaya and euonymus bungeanus for use, so that the intestinal tract movement of pets can be accelerated, the problems of diarrhea, constipation and the like cannot be caused, pet hair is promoted to be discharged out of a body, and the components are safe and can be used for a long time.

The invention belongs to the field of food engineering, and particularly relates to sphere-like starch-based nanoparticles as well as a preparation method and application thereof. The method comprises the following steps: performing enzymolysis and aging treatment on sweet potato starch gelatinization liquid to obtain rod-like starch nanoparticles, and further performing cooling and aging treatment on the rod-like starch nanoparticles and a small amount of whey protein solution under a hydrothermal condition to obtain the sphere-like starch-based nanoparticles. According to the method provided by the invention, the rod-like nanoparticles which are less than 10 nm and do not have the emulsifying property are further modified and processed to prepare the sphere-like nanoparticles with the scale of 10-30 nm and the high internal phase emulsifying property, the emulsifying effect of the sphere-like nanoparticles can be compared with that of whey protein with the same concentration, and the high internal phase emulsion is small in droplet particle size, good in storage stability, low in cost and wide in application prospect.

The invention discloses a low-GI sweet potato biscuit and a preparation method thereof. The preparation method comprises the following steps: mixing sweet potato whole powder, inulin and other raw materials to form basic powder, freezing at-20 DEG C, forming pores, and unfreezing to obtain porous premixed powder; the preparation method comprises the following steps: preparing a composite mineralizing solution containing soybean protein peptide, nano calcium hydrophosphate and tea polyphenol, mixing and mineralizing the composite mineralizing solution with porous premixed powder, screening, mixing and kneading with an auxiliary material emulsion, forming, freezing to obtain biscuit blanks, and finally performing segmented temperature-controlled baking, cooling and packaging. According to the low-GI sweet potato biscuit and the preparation method thereof, a freezing pore-forming-polyphenol mediated mineralization-peptide anchoring three-in-one composite modification technology is adopted, functional raw materials in a specific proportion are cooperated, a five-dimensional cross-linked network of porous starch-peptide-polyphenol-mineral substance-beta-glucan is constructed, and function upgrading of the low-GI sweet potato biscuit is achieved from multiple dimensions of structure optimization, mechanism strengthening and nutrition cooperation.

The invention discloses a making method of multi-flavor bread potatoes. The making method comprises the following steps of a pretreatment step, wherein sweet potatoes are subjected to pretreatment of cleaning and peeling; a pre-cutting step: transversely cutting the pretreated sweet potatoes into a plurality of sections along the axial direction, and keeping 0.3-1.2 cm of the bottom without cutting off, so that the sweet potatoes are of a multi-section structure of which the bottoms are connected; a coating step: coating the surfaces of the sweet potatoes subjected to the pre-cutting step with a coating; a baking step: putting the sweet potatoes coated with the coating on a non-stick baking net, and sequentially carrying out the following three stages: a first stage: baking the sweet potatoes at 200-240 DEG C for 4-10 minutes to form a hard shell on the surface of the coating; in the second stage, the sweet potatoes are baked at 150-170 DEG C for 35-45 minutes, so that the interiors of the sweet potatoes are cured; a third stage: baking at 120-140 DEG C for 12-18 minutes to enable the hard shell to be crisp; by means of the mode, the problems that in the prior art, during baking, a coating is prone to adhesion and falling off, and during finished product cutting, the coating is broken, and potato bodies deform can be solved, operation is easy and convenient, the yield is high, and the method is suitable for mass production of the multi-flavor bread potatoes.

The utility model provides a kind of factory sweet potato large storage frame with automatic ventilation function, including multiple combined use's large sweet potato placing mechanism and be set to the inside ventilation of large sweet potato placing mechanism for the automatic ventilation mechanism of large sweet potato placing mechanism, large sweet potato placing mechanism includes placing plate, four connection through grooves are set in the inside of placing plate, and support rod is inserted in the inside of connection through groove;The placing plate and connection through groove for realizing installation containment to support rod are set, the placing plate for realizing the placing of placing groove is set, the placing groove for containing sweet potato is set, the air hole for sending air to the inside of placing groove and then realizing the inside ventilation of placing groove is set, avoid temperature excessively high or excessively low or humidity is greater to influence the preservation of sweet potato, while multiple placing plates can be stacked by support rod, realize the placing of more sweet potato.

The invention provides a granular soil planting method for sweet potatoes. The granular soil planting method comprises the following steps that S01, grooves are formed; a groove with a certain depth is formed in the soil of the saline-alkali land through manual or mechanical equipment, and the groove is in a long strip shape with a regular section; step S02, forming an impermeable layer; preparing cohesive soil slurry, and uniformly spraying the cohesive soil slurry on the inner wall of the groove so as to form an impermeable layer with a certain thickness on the inner wall of the groove; s03, aggregate soil is laid; granular soil is evenly laid in the grooves, and the granular soil in the grooves forms planting soil; according to the granular soil planting method for the sweet potatoes, planting of the sweet potatoes can be well adapted, construction is easy, the cost is low, the effect is good, secondary pollution to the soil is avoided, and re-operation is facilitated.

The utility model relates to the technical field of vermicelli production, and discloses an airing device for sweet potato vermicelli production, which comprises a support frame, a plurality of support plates penetrate through the support frame and are fixedly connected with the support frame, a plurality of bases are attached to the top ends of the support plates, and filter screens are fixedly connected to the top ends of the bases. A supporting column is fixedly connected to the inner bottom end of the base, a plurality of through grooves penetrate through the lower side of the outer wall of the supporting column, inverted-cone-shaped grooves are formed in the positions, corresponding to the through grooves, of the inner wall of the base, a drainage pipe is fixedly connected to the bottom end of the base and penetrates through the bottom end of the supporting plate, and limiting blocks are attached to the two sides of the outer wall of the base. Sliding grooves are formed in the two sides, corresponding to the limiting blocks, of the top end of the supporting plate, the bottom ends of the limiting blocks are located in the sliding grooves and slidably connected with the sliding grooves, and springs are fixedly connected between the limiting blocks and the sliding grooves.

The invention discloses a special feed for black pigs. The special feed is characterized by comprising the following raw materials: corn, fermented soybean meal, bran, sweet potato vine powder, fish meal, chicken intestine membrane protein powder, composite vitamins, composite minerals, lysine, methionine, table salt and a probiotic preparation. The preparation method of the special feed for the black pigs is characterized by comprising the following steps: S1, pretreating the raw materials; s2, mixing and stirring for the first time; s3, mixing and stirring for the second time; s4, mixing and stirring for the third time; and S5, drying. Aiming at the physiological characteristics of long growth cycle, mild energy and protein requirements and high dietary fiber and mineral substance requirements of black pigs, all the raw material components are accurately proportioned, so that the black pig feed is easier to digest and absorb, reduces the burden of gastrointestinal tracts, promotes intestinal peristalsis, improves the digestive function, meets the requirements of skeletal development and muscle growth, avoids deficiency or excess of micronutrients, and improves the production efficiency. The intestinal flora balance can be adjusted, and the immunity is improved.

To provide a processing device that can sterilize sweet potatoes and allow for long-term storage. [Solution] The sweet potato processing apparatus 100 of the present invention consists of a sterilization and washing apparatus 30 for sterilizing and washing sweet potatoes (200), an introduction and conveying apparatus 20 for introducing sweet potatoes (200) into the sterilization and washing apparatus 30, and a sweet potato discharge apparatus 40 for moving the sweet potatoes (200) processed by the sterilization and washing apparatus 30 downstream. The sterilization and washing apparatus 30 is provided with a plurality of brush rollers 60 for moving the sweet potatoes (200) downstream while rotating them, and a spraying apparatus 65 for spraying washing water containing ozonated water toward the plurality of brush rollers 60.

The present invention provides a processing apparatus capable of sterilizing sweet potatoes and preserving them for a long period of time. A sweet potato processing apparatus (100) according to the present invention comprises: a sterilization / washing device (30) that sterilizes and washes sweet potatoes (200); an introduction / conveyance device (20) that introduces the sweet potatoes (200) to the sterilization / washing device (30); and a sweet potato discharge device (40) that moves the sweet potatoes (200) treated by the sterilization / washing device (30) downstream. The sterilization / washing device (30) is provided with a plurality of brush rollers (60) for moving the sweet potatoes (200) downstream while rotating the sweet potatoes (200), and a spray device (65) for spraying cleaning water containing ozonated water toward the plurality of brush rollers (60).