Composite raw material foamed and shaped konjak face washing puff and preparation method thereof

Abstract

The invention relates to the field of articles of daily use, and particularly discloses a composite raw material foamed and shaped konjak face washing puff and a preparation method thereof. The invention discloses a konjak mask which is prepared from the following raw materials in parts by mass: 20-60 parts of konjak powder, 5-15 parts of polyvinyl alcohol (PVA), 1-3 parts of hydrochloric acid, 10-30 parts of konjak purified powder, 2-5 parts of edible baking soda, 10-20 parts of edible alcohol with the concentration of 70%, 0.1-0.5 part of a coloring agent, 0.2-0.8 part of a color stabilizer, 0.3-1 part of a deodorant, 3-8 parts of talcum powder and 0.5-2 parts of cinnamyl aldehyde. Through mechanical foaming and cold storage shaping, the product with uniform micropores and high resilience is obtained, the defect that a traditional konjak product is prone to collapse is overcome, and the product is endowed with cloud-like soft touch; through the compound formula of cinnamyl aldehyde and 70% alcohol, the antibacterial rate of the product is greatly improved, and no chemical preservative is needed, so that the occurrence of skin sensitivity is greatly reduced.

Description

Technical Field

[0001] The present invention belongs to the field of daily necessities, and more specifically relates to a foamed and shaped konjac facial puff made of composite raw materials and a preparation method thereof. Background Art

[0002] Konjac is widely used in the fields of food, medicine and daily chemicals due to its rich glucomannan (KGM). Its natural gel properties make it an ideal substrate for cleaning products.

[0003] A konjac facial puff is a cleaning product made from natural konjac powder. Its glucomannan component can form a gel-like network when exposed to water, with a soft and skin-friendly touch. The traditional process uses chemical cross-linking agents (such as borax) for curing and shaping, presenting a porous sponge structure, which is suitable for daily facial cleansing or makeup removal.

[0004] However, the high hydrophilicity of konjac polysaccharide in existing konjac facial puffs makes it prone to becoming a breeding ground for microorganisms. Commercially available konjac facial puffs mostly rely on chemical preservatives such as sodium benzoate, and long-term contact may cause skin sensitivity. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a foamed and shaped konjac facial puff made of composite raw materials to solve the problem that existing konjac facial puffs mostly rely on chemical preservatives such as sodium benzoate, and long-term contact may cause skin sensitivity.

[0006] The foamed and shaped konjac facial puff made of composite raw materials is composed of the following raw materials in parts by mass:

[0007] 20 - 60 parts of konjac powder, 5 - 15 parts of polyvinyl alcohol (PVA), 1 - 3 parts of hydrochloric acid, 10 - 30 parts of purified konjac powder, 2 - 5 parts of edible baking soda, 10 - 20 parts of edible alcohol with a concentration of 70%, 0.1 - 0.5 parts of dye, 0.2 - 0.8 parts of color stabilizer, 0.3 - 1 part of deodorant, 3 - 8 parts of talcum powder, 0.5 - 2 parts of cinnamaldehyde.

[0008] The preparation method of the foamed and shaped konjac facial puff made of composite raw materials includes the following steps:

[0009] Step 1: Raw material mixing and foaming and shaping:

[0010] Mix konjac powder, PVA, hydrochloric acid, dye, color stabilizer, deodorant and talcum powder in proportion, add purified water and stir until uniform to obtain a slurry;

[0011] Perform mechanical foaming treatment on the slurry, with a foaming volume expansion rate of 200 - 300% and a foaming pore diameter of 0.1 - 0.5 mm, and then transfer it to a cold storage at -5°C to 5°C for static setting for 12 - 24 hours;

[0012] Step 2: Fermentation and shaping:

[0013] Mix the purified konjac powder with edible baking soda, stir into a paste-like liquid, then inject it into a mold, cover the surface of the foamed and shaped slurry obtained in Step 1, and let it stand in a fermentation chamber at 20±2°C for 100 - 150 minutes to form a semi-finished product;

[0014] Step 3. Antiseptic treatment:

[0015] Mix cinnamaldehyde with 70% edible alcohol in a ratio of 1:5 - 1:10, and evenly spray it on the surface of the semi-finished product obtained in Step 2, then let it stand for 20 - 60 minutes;

[0016] Step 4. Post-treatment:

[0017] After demolding, trim, dry, and disinfect the facial puff.

[0018] Preferably, in Step 1, the dye is a food-grade natural pigment, the color stabilizer is sodium citrate, and the deodorant is a plant-extracted essential oil.

[0019] Preferably, in Step 4, the drying method is drying at 40 - 60°C.

[0020] Preferably, in Step 4, the disinfection method is ultraviolet disinfection, and the irradiation dose of the ultraviolet disinfection is 3000 - 5000 μW / cm 2 , for 10 - 15 minutes.

[0021] Preferably, in Step 1, the foaming treatment adopts the compressed air injection method.

[0022] Preferably, in Step 4, the disinfection method is high-temperature steam disinfection, the temperature of the high-temperature steam disinfection is 105 - 110°C, and it lasts for 10 - 15 minutes.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] Through mechanical foaming + cold storage shaping, a product with uniform micropores and high resilience is obtained, breaking through the defect that traditional konjac products are prone to collapse, and endowing the product with a soft touch like a cloud;

[0025] Through the composite formula of cinnamaldehyde + 70% alcohol, the antibacterial rate of the product is greatly improved, and no chemical preservatives are required, so the occurrence of skin sensitivity is greatly reduced. Brief Description of the Drawings

[0026] Figure 1 It is the preparation flow chart of the present invention. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figure 1 shown:

[0029] Example 1:

[0030] Raw material ratio (parts by mass)

[0031] Konjac flour: 20 parts, PVA: 5 parts, hydrochloric acid: 1 part, purified konjac powder: 10 parts, edible baking soda: 2 parts, 70% edible alcohol: 10 parts, coloring agent (food-grade natural pigment): 0.1 part, color stabilizer (sodium citrate): 0.2 part, deodorant (plant extract essential oil): 0.3 part, talcum powder: 3 parts, cinnamaldehyde: 0.5 part.

[0032] Preparation method

[0033] Raw material mixing and foaming and shaping

[0034] Mix konjac flour, PVA, hydrochloric acid, coloring agent, color stabilizer, deodorant and talcum powder, and add water and stir into a slurry.

[0035] Mechanical foaming: Compressed air injection method, foaming volume expansion rate 200%, pore diameter 0.1 mm.

[0036] Cold storage shaping: Transfer to a -5°C cold storage and let stand for 12 hours.

[0037] Fermentation and shaping

[0038] Mix purified konjac powder and edible baking soda into a paste-like liquid and cover it on the surface of the foamed slurry.

[0039] Fermentation conditions: Let stand at 20 ± 2°C for 100 minutes.

[0040] Antiseptic treatment

[0041] Mix cinnamaldehyde and 70% alcohol in a ratio of 1:10 and spray, then let stand for 10 minutes.

[0042] Post-treatment

[0043] Drying: Dry at 40°C.

[0044] Disinfection: Ultraviolet irradiation at 3000 μW / cm 2 , for 10 minutes.

[0045] Example 2

[0046] Raw material ratio (parts by mass)

[0047] Konjac powder: 40 parts, PVA: 10 parts, hydrochloric acid: 2 parts, purified konjac powder: 20 parts, edible baking soda: 3.5 parts, 70% edible alcohol: 15 parts, coloring agent (food-grade natural pigment): 0.3 part, color stabilizer (sodium citrate): 0.5 part, deodorant (plant-extracted essential oil): 0.6 part, talcum powder: 5.5 parts, cinnamaldehyde: 1.2 parts.

[0048] Preparation method

[0049] Raw material mixing and foaming and shaping

[0050] Mechanical foaming: Compressed air injection method, foaming volume expansion rate 250%, pore diameter 0.3 mm.

[0051] Cold storage shaping: Transfer to a 0°C cold storage and let stand for 18 hours.

[0052] Fermentation and shaping

[0053] Fermentation conditions: Let stand at 20±2°C for 125 minutes.

[0054] Antiseptic treatment

[0055] Mix cinnamaldehyde and alcohol in a ratio of 1:7.5 and spray, then let stand for 20 minutes.

[0056] Post-treatment

[0057] Drying: Dry at 50°C.

[0058] Disinfection: High-temperature steam at 108°C for 12 minutes.

[0059] Example 3

[0060] Raw material ratio (parts by mass)

[0061] Konjac powder: 60 parts, PVA: 15 parts, hydrochloric acid: 3 parts, purified konjac powder: 30 parts, edible baking soda: 5 parts, 70% edible alcohol: 20 parts, coloring agent (food-grade natural pigment): 0.5 part, color stabilizer (sodium citrate): 0.8 part, deodorant (plant-extracted essential oil): 1 part, talcum powder: 8 parts, cinnamaldehyde: 2 parts.

[0062] Preparation method

[0063] Raw material mixing and foaming and shaping

[0064] Mechanical foaming: Compressed air injection method, foaming volume expansion rate 300%, pore diameter 0.5 mm.

[0065] Cold storage shaping: Transfer to a 5°C cold storage and let stand for 24 hours.

[0066] Fermentation and Molding

[0067] Fermentation conditions: Stand still for 150 minutes at 20 ± 2°C.

[0068] Antiseptic Treatment

[0069] Mix cinnamaldehyde and alcohol in a ratio of 1:5 and spray, then stand still for 30 minutes.

[0070] Post-treatment

[0071] Drying: Bake at 60°C.

[0072] Disinfection: High-temperature steam at 110°C for 15 minutes.

[0073] Example 3: Preparation Process Flow of Konjac Purified Powder

[0074] Step 1: Raw Material Pretreatment

[0075] Raw Material Selection:

[0076] Select fresh konjac tubers (starch content ≤ 5%, moisture content ≤ 12%), wash and slice (thickness 2 - 3 mm).

[0077] Color Protection Treatment:

[0078] Soak the slices in 0.1% citric acid + 0.05% ascorbic acid solution (pH 3.0 - 4.0) at 30°C for 30 minutes to inhibit browning.

[0079] Step 2: Removal of Calcium Oxalate

[0080] Acidolysis Reaction:

[0081] Mix konjac slices and 3% citric acid solution in a ratio of 1:10 (w / v), stir at 50°C for 2 hours to dissolve calcium oxalate crystals.

[0082] Primary Filtration:

[0083] Coarsely filter through a 200-mesh sieve, discard the filter residue (containing fibers and undissolved impurities).

[0084] Step 3: Extraction of Konjac Glucomannan

[0085] Alkaline Dissolution and Purification:

[0086] Add 0.5% sodium bicarbonate (pH 8.0 - 8.5) to the filtrate, stir at 60°C for 1 hour to fully dissolve KGM.

[0087] Centrifugal Separation:

[0088] Use a horizontal scroll centrifuge (rotation speed 8000 rpm, 15 minutes) to separate the supernatant (containing KGM) and the precipitate (protein, residual impurities).

[0089] Step 4: Deep purification

[0090] Membrane filtration:

[0091] The supernatant is passed through a 0.1 μm ceramic membrane ultrafiltration system to retain KGM with a molecular weight cut-off > 100 kDa and remove small molecule impurities (ash, monosaccharides).

[0092] Ethanol precipitation:

[0093] Add 3 volumes of 95% edible ethanol to the filtrate, stir to precipitate the flocculent KGM, and siphon off the supernatant after standing and stratifying.

[0094] Step 5: Decoloration and deodorization

[0095] Activated carbon treatment:

[0096] Mix the precipitate with 0.1% food-grade activated carbon (w / w), stir at 50 °C for 30 minutes to adsorb pigments and odor substances.

[0097] Secondary centrifugation:

[0098] Centrifuge at 10000 rpm for 10 minutes to remove activated carbon and residual impurities.

[0099] Step 6: Drying and pulverization

[0100] Vacuum drying:

[0101] Place the purified wet KGM in a vacuum drying oven (-0.08 MPa, 55 °C) and dry until the moisture content ≤ 8%.

[0102] Ultra-fine pulverization:

[0103] Use an air jet mill (pressure 0.8 MPa) to pulverize to a particle size D90 ≤ 20 μm and pass through a 300-mesh sieve.

[0104] Step 7: Sterilization and packaging

[0105] Irradiation sterilization:

[0106] Irradiate with Co-60 γ-rays (dose 5 kGy) to kill microorganisms (total colony count ≤ 100 CFU / g).

[0107] Nitrogen filling packaging:

[0108] Seal the aluminum foil bag with nitrogen, store in the dark, and the shelf life is 24 months.

[0109] Experimental Example 1: Performance verification of natural preservative system konjac facial puff

[0110] I. Experimental purpose

[0111] Verify the inhibitory effect of the natural preservative system (cinnamaldehyde + 70% alcohol) on microorganisms in Example 2, and replace chemical preservatives such as sodium benzoate in commercially available products;

[0112] Compare and analyze the anti-corrosion performance and skin irritation of the experimental group and the commercially available control group (containing sodium benzoate);

[0113] Evaluate the physical properties (foaming, elasticity) and functional advantages (cleaning, moisturizing) of the patented product to prove its market competitiveness.

[0114] II. Experimental Procedures

[0115] 1. Setting of the experimental group

[0116]

[0117]

[0118] 2. Test process

[0119] Sample preparation: Prepare the experimental group samples according to the method of Claim 2, and directly purchase the commercially available control group (containing sodium benzoate).

[0120] Anti-corrosion performance test:

[0121] Immerse the samples in a mixed bacterial solution of Escherichia coli / Staphylococcus aureus (25 °C), and detect the total number of bacteria on the 1st / 3rd / 7th day.

[0122] Skin irritation test:

[0123] Patch test: 60 volunteers (30 people use the experimental group, 30 people use the commercially available control group), record the reactions such as erythema and itching after 24-hour closed dressing.

[0124] Physical and functional performance test:

[0125] Foaming volume expansion rate, pore size, resilience (the same method as before);

[0126] Cleaning rate (artificial sebum film), moisturizing property (detected by skin moisture meter).

[0127] III. Experimental data table

[0128] Table 1: Comparison of anti-corrosion performance (total number of bacteria, unit: CFU / g)

[0129]

[0130]

[0131] Table 2: Comparison of skin irritation

[0132]

[0133] Table 3: Physical and Functional Properties

[0134] Test Index Experimental Group Commercially Available Control Group Foaming Volume Expansion Rate (%) 250％ 90％ Resilience (%) 85％ 45％ Cleaning Rate (%) 92％ 68％ Skin Moisture Enhancement (%) 16％ 7％

[0135] IV. Analysis of Experimental Results

[0136] 1. Anticorrosion Performance and Safety

[0137] Effectiveness of natural anticorrosion system: In the experimental group (cinnamaldehyde + alcohol), the total number of bacteria was only 120 CFU / g within 7 days, which was close to that of the commercially available control group (sodium benzoate) at 200 CFU / g and much lower than that of the blank control group (10 8 CFU / g), proving that natural preservatives can replace chemical preservatives.

[0138] Significantly reduced irritation: Due to the presence of sodium benzoate in the commercially available control group, the passing rate of irritation was only 80% (6 cases of erythema), while the passing rate of the experimental group reached 96.7%, indicating that natural preservatives can reduce the risk of skin sensitivity.

[0139] 2. Physical and Functional Advantages

[0140] Foaming process improves the use experience: The foaming rate of the experimental group was 250% and the resilience was 85%, which were significantly better than those of the commercially available control group (foaming rate of 90% and resilience of 45%), proving that the low-temperature foaming and shaping process improves the softness of the product.

[0141] Double improvement in cleaning and moisturizing: The cleaning rate of the experimental group was 92% (68% for commercially available products), and the skin moisture increased by 16% (7% for commercially available products), benefiting from the water-locking property of konjac polysaccharide and the efficient cleaning of the foaming structure.

[0142] 3. Significance of Replacing Chemical Preservatives

[0143] Commercially available products rely on preservatives such as sodium benzoate, and long-term use may damage the skin barrier (pH imbalance, risk of sensitivity). The experimental group, through the compounding of natural ingredients (cinnamaldehyde for antibacterial and alcohol for promoting penetration), while ensuring the anticorrosion effect:

[0144] Maintains the pH value at 6.2 (close to the weakly acidic environment of the skin);

[0145] Avoids chemical residues and reduces the probability of allergies.

[0146] V. Conclusion

[0147] The patented formula replaces sodium benzoate with a natural anticorrosion system (cinnamaldehyde + alcohol), achieving the standard anticorrosion effect and reducing irritation by 16.7%;

[0148] The foaming and shaping process significantly improves the physical properties of the product (expansion rate +178%, resilience +89%);

[0149] The patented technology takes into account safety, functionality and environmental protection requirements, providing a solution to the problem of dependence on commercially available chemical preservatives.

[0150] Experimental Example 2: Verification of the improvement effect of the foaming and shaping process, ingredient ratio and anti-corrosion treatment on the performance of the facial puff

[0151] Experimental purpose

[0152] By comparing with the control group, clarify the necessity of key ingredients such as purified konjac powder and cinnamaldehyde;

[0153] Evaluate the product safety (irritation, anti-corrosion) and functional advantages (cleaning power, moisturizing).

[0154] Experimental steps

[0155] I. Setting of experimental group and control group

[0156]

[0157] II. Test process Sample preparation: Prepare samples of the experimental group and the control group according to the method of claim 2 (repeated 3 times for each group). Physical property test:

[0158] Foaming volume expansion rate: Volume measurement method (volume after foaming / original volume × 100%);

[0159] Pore size analysis: Electron microscope (100 times magnification, randomly select 10 areas to measure the average pore size); Resilience: Record the recovery rate after compressing to 50% deformation.

[0160] Anti-corrosion effect test:

[0161] The samples are immersed in the Escherichia coli culture medium (25 °C), and the total number of bacteria (CFU / g) is detected on the 3rd / 5th / 7th day. Functional property test:

[0162] Cleaning rate: Weigh after wiping the artificial sebum film and calculate the cleaning efficiency;

[0163] Moisturizing: Measure the skin moisture change (detected by a moisture meter) after 30 volunteers use it.

[0164] Safety test:

[0165] Irritation: 30-person patch test (24-hour closed application), record adverse reactions.

[0166] Experimental data table

[0167] Table 4: Physical property comparison

[0168]

[0169] Table 5: Anticorrosion Performance and pH Value

[0170]

[0171] Table 6: Function and Safety

[0172]

[0173]

[0174] Analysis of Experimental Results

[0175] 1. Advantages in Physical Properties

[0176] Optimization of Foaming Process: The foaming expansion rate of the experimental group is 250% (only 90% for the commercially available control group). Combined with low-temperature shaping (standing at 0°C for 18 hours), it forms uniform pore size (0.3 mm) and low density (0.18 g / cm 3 ), proving that the mechanical foaming + cold storage shaping process significantly improves the softness and elasticity of the product.

[0177] Necessity of Konjac Purified Powder: In Variable Control Group 1 (without Konjac purified powder), uneven pore size (0.5 mm) and structural collapse occurred due to insufficient fermentation, indicating that Konjac purified powder plays a role in strengthening gel during molding.

[0178] 2. Anticorrosion and Safety

[0179] Synergistic Anticorrosion Effect: The total number of bacteria in the experimental group is < 100 CFU / g within 7 days (exceeding the standard to 10 4 CFU / g in the blank control group in 3 days), indicating that the composite anticorrosion system of cinnamaldehyde (1.25 parts) + 70% alcohol effectively inhibits the growth of microorganisms.

[0180] Verification of Mildness: The pH value of the experimental group is 6.2, close to the weak acidic environment of the skin, and the qualification rate of irritation is 96.7% (83.3% for the commercially available control group), meeting the safety standards of cosmetics.

[0181] 3. Improvement in Functional Performance

[0182] Cleaning Power: The cleaning rate of the experimental group is 92% (68% for the commercially available control group), benefiting from the increased contact area of dirt due to the foaming structure;

[0183] Moisturizing Property: The water-locking property of konjac polysaccharide increases skin moisture by 16% (7% for the commercially available control group), reflecting the functional advantages of natural ingredients.

[0184] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0185] In the accompanying drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, and other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0186] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The composite raw material foaming and shaping konjac facial puff is characterized in that It consists of the following raw materials in parts by mass: Konjac powder 20 - 60 parts, polyvinyl alcohol (PVA) 5 - 15 parts, hydrochloric acid 1 - 3 parts, purified konjac powder 10 - 30 parts, edible baking soda 2 - 5 parts, edible alcohol with a concentration of 70% 10 - 20 parts, dye 0.1 - 0.5 parts, color stabilizer 0.2 - 0.8 parts, deodorant 0.3 - 1 part, talcum powder 3 - 8 parts, cinnamaldehyde 0.5 - 2 parts.

2. The preparation method of the composite raw material foaming and shaping konjac facial puff according to claim 1, characterized in that, It includes the following steps: Step 1, raw material mixing and foaming and shaping: Mix konjac powder, PVA, hydrochloric acid, dye, color stabilizer, deodorant and talcum powder in proportion, add purified water and stir until uniform to obtain a slurry; Perform mechanical foaming treatment on the slurry, with a foaming volume expansion rate of 200 - 300% and a foaming pore diameter of 0.1 - 0.5 mm, and then transfer it to a cold storage at -5°C to 5°C for static shaping for 12 - 24 hours; Step 2, fermentation and shaping: Mix purified konjac powder and edible baking soda, stir into a paste-like liquid and inject it into a mold, cover the surface of the foamed and shaped slurry obtained in Step 1, and let it stand in a fermentation chamber at 20 ± 2°C for 100 - 150 minutes to form a semi-finished product; Step 3, anti-corrosion treatment: Mix cinnamaldehyde and 70% edible alcohol in a ratio of 1:5 - 1:10, evenly spray it on the surface of the semi-finished product obtained in Step 2, and let it stand for 20 - 60 minutes; Step 4, post-treatment: After demolding, trim, dry and disinfect the facial puff.

3. The preparation method of the konjac facial puff according to claim 2, wherein, In Step 1, the dye is a food-grade natural pigment, the color stabilizer is sodium citrate, and the deodorant is a plant-extracted essential oil.

4. The preparation method of the konjac facial puff according to claim 2, wherein In Step 4, the drying method is drying at 40 - 60°C.

5. The preparation method of the konjac facial puff according to claim 2, wherein, In Step 4, the disinfection method is ultraviolet disinfection, and the irradiation dose of the ultraviolet disinfection is 3000 - 5000 μW / cm 2 , lasting for 10 - 15 minutes.

6. The preparation method of the konjac facial puff according to claim 2, wherein In Step 1, the foaming treatment adopts the compressed air injection method.

7. The preparation method of the konjac facial puff according to claim 2, characterized in that, In Step 4, the disinfection method adopts high-temperature steam disinfection, and the high-temperature steam disinfection temperature is 105 - 110°C, lasting for 10 - 15 minutes.

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