A dishwashing block for removing odor and preparation method thereof

Abstract

The present invention relates to an odor-removing dishwashing pad, which comprises the following components in different mass fractions: cucurbituril and probiotics. The cucurbituril and probiotics work synergistically. Cucurbituril removes odors in the early stages by molecular adsorption, while probiotics effectively decompose food residues, the source of the odor, in the later stages. By treating odors at different stages, the pad achieves the purpose of long-term odor removal.

Description

Technical Field

[0001] The invention belongs to the technical field of production of special detergents for automatic dishwashers, and particularly relates to a dishwashing block for removing odors and a preparation method thereof. Background Art

[0002] With the increasing popularity of mechanized washing on social platforms in recent years, dishwashers, as efficient and energy-saving devices, are becoming more and more popular among consumers. The most direct experience of consumers using dishwashers to wash dishes is that dishwashers help solve the problem of washing dishes.

[0003] Cleaning dishes is merely a basic requirement. With the development and improvement of dishwashers, consumers are demanding more than just stain removal. Dishwashing tablets are a new type of pre-packaged dishwasher detergent that offers a convenient, fast, and effective way to remove stains. Furthermore, as the demand for dishwashing tablets grows, consumers are also increasingly concerned with odor. Generally speaking, dishwasher odors come in two flavors: the first is the odor of food residue from unwashed dishes, which cannot be completely removed by detergent and can remain on the dishes even after washing. The second is the need to rinse larger food residues from dishes before washing. However, some smaller food residues inevitably remain. Even if the stains are removed promptly after washing, some may remain inside the dishwasher and in the drain pipe. Over time, these food residues can ferment in the dishwasher tub or drain pipe, producing an unpleasant odor. Even after the dishwasher cleans the dishes, the odor still lingers, reducing consumer satisfaction with the dishwasher.

[0004] Existing dishwashing tablets generally claim to be "slow-release," "natural and environmentally friendly," and "powerful at removing grease." Products specifically addressing odor are even rarer. To address the problem of odors generated by long-term dishwasher use and lingering on dishes, the current recommendation is to use derivative products such as dishwasher tub cleaners and cleaning salts. Regularly cleaning the dishwasher can reduce odors to a certain extent. However, using these products is a significant additional expense for consumers, with a low cost-effectiveness ratio. Furthermore, if cleaning is performed infrequently, odors can persist.

[0005] There are many methods on the market that claim to remove odors. One method involves using fragrances to mask odors or alcohol to evaporate and remove them; another involves using biguanide salts and polyhexamethylammonium chloride to remove odors; a third involves using polysaccharides, chlorhexidine acetate, dodecyldimethylbenzyl ammonium bromide, and povidone-iodine; and a fourth involves using benzalkonium chloride. These methods primarily mask and neutralize odors. While they can alleviate odors in the short term, they do not fundamentally eliminate them, are inefficient, and can irritate the sense of smell. Over time, the odor will gradually reappear, failing to achieve true odor removal.

[0006] Therefore, it is very necessary to develop a deodorizing technology for dishwasher-specific dishwashing blocks, which can effectively improve the problem of odor after washing dishes and enhance the better experience effect that dishwashers bring to people. Summary of the Invention

[0007] In view of the above defects, the present invention provides a dishwashing block composed of cucurbituril and probiotics that can effectively remove odors. On the basis of the strong decontamination effect of existing dishwashing blocks, it can meet the performance requirements of removing odors, and can effectively remove the unpleasant odors caused by fermentation of food residues in the dishwasher tank or drain pipe, fundamentally solving the problem of odors in washing dishes.

[0008] Specifically, during the washing process, the active ingredients in the dishwashing tablets, combined with rinsing water, can essentially remove stains from the dishwasher. The addition of cucurbituril, on the other hand, can capture various residual odors from the dishes. This is primarily due to the unique macrocyclic molecular structure of cucurbituril, which easily binds to odor molecules, thus achieving the capture effect. Finally, the addition of probiotics decomposes food residues in the dishwasher and pipes, achieving the goal of long-term and effective odor removal. This is primarily due to the probiotics' ability to secrete antimicrobial peptides with broad-spectrum bactericidal activity. These peptides block the production of odor molecules caused by the fermentation of food residues through various means, including microbial antagonism, increased enzyme activity, oxygen deprivation, and bacterial flora adjustments.

[0009] The cucurbituril and probiotics are added together to produce a synergistic effect. Cucurbituril removes odors in the early stage by molecular adsorption, while probiotics effectively decompose food residues that are the source of odors in the later stage. By treating odors at different stages, the purpose of long-term odor removal is achieved.

[0010] One object of the present invention is to provide a dishwashing block with high efficiency in removing odors, comprising the following components in weight fractions:

[0011]

[0012] Wherein, the cucurbituril satisfies the following general formula:

[0013]

[0014] Where n=6-8.

[0015] Furthermore, the alkaline salt is at least one or more of silicate, sulfate, bicarbonate, carbonate, and citrate.

[0016] Furthermore, the surfactant is selected from one or more of EO / PO block polyethers, isooctyl phosphate derivatives, ethoxylated fatty acid methyl ester derivatives, and polyether-modified silicones.

[0017] Furthermore, the auxiliary agent is selected from one or more of an oxidant, a dispersant, a chelating agent, an adhesive, a release agent, and an enzyme preparation.

[0018] Furthermore, the concentration of probiotics is not less than 1*10 7 cfu / g.

[0019] Furthermore, the oxidant is selected from peroxides.

[0020] Furthermore, the dispersant is selected from high molecular polymers.

[0021] Furthermore, the probiotics are selected from lactobacilli.

[0022] Another object of the present invention is to provide a method for preparing the above-mentioned deodorizing dishwashing block, which comprises the following steps:

[0023] S1: uniformly mixing the components according to the mass fraction ratio to obtain a mixture;

[0024] S2: After the mixture is evenly mixed, mixed particles with a particle size of 8-200 mesh are obtained;

[0025] S3: After the mixed particles are pressed into shape, a product is obtained.

[0026] The present invention has the following beneficial effects:

[0027] 1. The addition of the cucurbituril can capture odor molecules, so that the equipment and tableware will not have any odor after washing. This is mainly due to the interaction between the hydrophobic cavity and the polar part of the cucurbituril, which can block the odor receptors and form new low-odor molecules. The cucurbituril is a macrocyclic receptor that can capture and carry odor molecules volatilized by food. Amine odor molecules such as butylamine and trimethylamine are produced by the fishy smell in food; odor molecules such as dipropyl sulfide and fatty acids are produced by sulfur-containing compounds such as onions, garlic, and leeks; odor molecules such as 2-pentaethylfuran, thiazole and thiol (2-ethyl-1-hexanethiol) produced by meat and sheep smell; malodor molecules such as acidic compounds (acetic acid) act as donors and are captured and carried away by the cucurbituril, thereby achieving a temporary odor removal effect.

[0028] 2. In particular, the addition of probiotics of the present invention results in lactic acid and antimicrobial peptides produced through anaerobic respiration after the dishwasher washes dishes for the first time. The antimicrobial peptides remain in the dishwasher body, drain outlet, filter, etc. in the form of spores. The spores use the odor molecules as their own nutrients to germinate and begin to produce enzymes that decompose insoluble dirt on hard surfaces. The active ingredients in the dishwashing tablets combined with rinsing water make it easier for the enzymes to decompose the fine insoluble dirt on the hard surfaces into simple inorganic substances, while the probiotics decompose them into water and stable carbon compounds, thus blocking the generation of odor at the source.

[0029] 3. Finally, the present invention unexpectedly discovered that the combined action of cucurbituril and probiotics significantly reduces the odor of dishwashers and tableware. This combination provides a long-term solution to the problem of post-wash odor. Specifically, cucurbituril uses molecular adsorption to remove odors in the early stages, effectively removing residual odor molecules from the tableware and also effectively removing odor molecules from within the dishwasher. Probiotics, on the other hand, block the production of odor molecules caused by fermentation of food residues, thus playing a later role in removing odors. This odor removal method can last longer and be more effective. Furthermore, the addition of probiotics can maintain the activity of cucurbituril molecules. This is because during storage, substances outside the product storage environment consume cucurbituril, while probiotics can counteract the odors produced by these substances. Probiotics can produce some antioxidants, amino acids, etc., which can bind to cucurbituril, preventing the interaction of cucurbituril molecules with substances outside the storage environment. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the technical solutions of the present invention, the following examples are given. Unless otherwise stated, the raw materials, reactions and post-processing methods mentioned in the examples are common raw materials on the market and technical methods well known to those skilled in the art.

[0031] The reagent of the embodiment of the present invention includes the following components:

[0032] The cucurbituril of the embodiment of the present invention was purchased from Shengbang Chemical, model

[0033] The alkaline salts in the embodiments of the present invention are anhydrous sodium sulfate and sodium carbonate.

[0034] The low-foaming surfactant in the composition of the embodiment of the present invention is EO / PO block polyether, and the EO / PO block polyether is fatty alcohol polyoxyethylene ether, which is fatty alcohol polyoxyethylene ether AEO-3 produced by Jiangsu Yiweici Chemical Co., Ltd.

[0035] The oxidant in the embodiment of the present invention is sodium percarbonate.

[0036] The chelating agent in the embodiment of the present invention is tetrasodium glutamate diacetate produced by Zhejiang Jinke Daily Chemical New Materials Co., Ltd.

[0037] The high molecular weight polymer in the embodiment of the present invention is Dow ACUSOL 445NG.

[0038] The adhesive in the embodiment of the present invention is polyethylene glycol with a molecular weight of 6000 produced by Liaoning Aoke Chemical Co., Ltd.

[0039] The release agent of the embodiment of the present invention is 2000 mesh talc powder from Haiyang Powder Technology Co., Ltd.

[0040] The soybean ethyl sulfate morpholine in the embodiment of the present invention is a raw material of Tesco Chemical Co., Ltd.

[0041] The enzyme preparations in the embodiments of the present invention are products of Novozymes Enzymes, the amylase model is StainzymePlus Evity24T, and the protease model is BLAZE EVITY 100T.

[0042] The concentration of probiotics in the embodiment of the present invention is 1*10 11 cfu / g.

[0043] The mixture formulas of the dishwashing blocks of the embodiments of the present invention and the comparative examples are shown in Table 1.

[0044] Table 1 Components and corresponding mass fractions of Examples 1-3 and Comparative Examples 1-3

[0045]

[0046]

[0047] The preparation methods of the above Examples 1-3 and Comparative Examples 1-3 are as follows:

[0048] S1: Mix the ingredients in Table 1 according to their mass fractions to obtain a mixture;

[0049] S2: After the mixed materials are evenly mixed, mixed particles with a particle size of about 10-90 mesh are obtained;

[0050] S3: After the mixed particles are pressed into shape, a product is obtained.

[0051] Test method:

[0052] Test Example 1-Stability Investigation Plan:

[0053] Prepare samples and conduct stability tests: that is, under laboratory conditions, conduct a series of stability tests such as 8 weeks of high temperature (45±1℃, 37±1℃ / 75%RH) accelerated stability and 8 weeks of low temperature (0±2℃) stability. Evaluate the stability of the product by judging the appearance, observing the color, and observing whether there is no obvious change in the aroma; there is no obvious fluffy and fragile phenomenon, and no obvious moisture absorption and precipitation phenomenon.

[0054] The results of the stability test are shown in Table 2.

[0055] Table 2 Stability test results of Examples 1-3 and Comparative Examples 1-3

[0056]

[0057] Stability testing results showed that Examples 1-3, Comparative Examples 2, and Comparative Example 3 exhibited no significant changes in aroma, fluffiness, or moisture absorption or precipitation, indicating normal stability. However, Comparative Example 1 exhibited moisture absorption and precipitation during high-temperature (45±1°C, 37±1°C / 75% RH) stability testing, indicating that the sample failed stability testing.

[0058] Test Example 2 - Test method for instant odor removal:

[0059] By extracting and analyzing the fishy smell, mutton smell and other odors in food.

[0060] An odor source with the same composition was used to simulate the fishy and mutton-related odors carried by tableware. This odor source was then used to create a mixed impregnation liquid with these odors. The impregnation liquid formula was as follows: 2wt% oyster sauce, 2wt% lard, 2wt% egg, 5wt% tilapia tail meat, 2wt% mutton fat, 2wt% lamb chops, 2wt% hot pot base, and 85wt% distilled water.

[0061] Prepare the dipping solution according to the above ratios. Leave the tilapia tails untreated. Chop the lamb chops so that the minced meat can pass through a 10-mesh sieve. For the hot pot base, choose a Haidilao brand. Bring the prepared dipping solution to a boil. Dilute it with boiling distilled water at a concentration of 100g / L and cool to 25°C. Soak the tableware in the diluted 25°C dipping solution, ensuring it is completely submerged. Soak for 20 minutes before washing.

[0062] Instruments used: Panasonic dishwasher NP-K8RWH3R;

[0063] Washing mode: standard + high temperature sterilization (3.5h);

[0064] Washing water: tap water. Washing times: 1 time;

[0065] Washing Process: Place dishes in a Panasonic dishwasher, add the dishwashing sample, and run the dishwasher on standard mode. Results and Verification: Twelve reviewers were selected to evaluate the odor removal of dishes washed with the test sample. The average scores were compared based on the wash results. The rating scale is divided into three levels out of 5: 0 (complete odor removal); ≤3 (effective odor removal); and >3 (presence of odor). The average score was used for statistical calculation.

[0066] The results of the instant odor removal test are shown in Table 3.

[0067] Table 3 Instant odor removal test results of Examples 1-3 and Comparative Examples 1-3 (unit: minutes)

[0068]

[0069] From the test results in Table 3 we can see that:

[0070] In Example 1-3, the samples containing probiotics and cucurbituril were tested for immediate odor removal. Compared with the pre-washing (odor present), the samples effectively removed odor. Furthermore, as the dosage increased, the samples effectively removed odor more significantly, and the immediate odor removal effect became even better.

[0071] Comparative Example 1 does not add cucurbituril, and uses soybean ethyl sulfate morpholine to neutralize the odor. Compared with before washing (odor exists), the immediate odor removal effect is obvious, but the sample stability is unsatisfactory.

[0072] Comparative Example 2, in which cucurbituril and bifidobacterium were added as probiotics, achieved a better odor removal effect immediately after washing. Since cucurbituril removes odors in the early stage by molecular adsorption, it effectively removes odor molecules remaining on the tableware.

[0073] Comparative Example 3, in which neither probiotics nor cucurbituril was added, showed improvement in odor compared to before washing, but still had a noticeable odor. The powerful decontamination effect of the dishwashing block had a certain effect on removing odor, but the immediate odor removal effect was poor.

[0074] Test Example 3 - The test method for long-term odor removal is:

[0075] The tableware used was soaked in the same manner as in Test Example 2 and washed in the same mode. Results and judgment: At least 6 evaluators were selected to evaluate the odor concentration of the dishwasher tub after washing with the test sample at 0h, 24h, 48h, 72h, 96h, and 120h (the dishwasher door must be closed during the test and reopened for evaluation). Scores were compared based on the odor concentration results. The full score is 5 points, divided into three levels: 0 points for no odor at all; ≤3 points for odor; >3 points for obvious odor. The scores were calculated as average values.

[0076] The results are shown in Table 4.

[0077] Table 4 Long-term odor removal test results (unit: points)

[0078]

[0079] From the long-term odor removal test results in Table 4, it can be seen that Examples 1-3 basically do not generate new odors and continue to reduce the odor concentration over time. Based on the early stage of odor removal by molecular adsorption of cucurbituril, the continued decomposition of probiotics in the later stage effectively reduces the odor intensity and effectively removes the odor molecules remaining in the tableware, solving the odor problem.

[0080] Comparative Example 1 did not add cucurbituril, but used soybean ethyl sulfate morpholine to neutralize the odor. The odor removal effect was good in the early stage, and the odor intensity was effectively reduced in the later stage due to the continued decomposition of probiotics. However, the stability of the sample was unsatisfactory.

[0081] In Comparative Example 2, the probiotic Bifidobacterium was added. Cucurbituril provided a good immediate odor removal effect, but the odor concentration increased over time, resulting in a more severe odor. Because Bifidobacteria do not form spores, they struggle to decompose food residue in the dishwasher and pipes, and are unable to work with cucurbituril to remove odors, resulting in a more severe odor later in the dish.

[0082] Comparative Example 3, which added neither probiotics nor cucurbiturils, showed improved odor compared to pre-wash, but a noticeable odor persisted, increasing in intensity over time and resulting in a more severe odor. This is because the powerful cleaning effect of the dishwashing tablets, while effective at removing odors, is less effective in long-term odor removal.

[0083] The differences between Examples 1-3 and Comparative Examples 1-3 are summarized. The co-addition of probiotics and cucurbituril significantly and effectively removes odors. However, lacking one or both of probiotics and cucurbituril cannot achieve an efficient odor removal effect. There is an excellent synergistic effect between probiotics and cucurbituril, which is manifested in that the co-addition of the probiotics and cucurbituril makes up for the shortcomings of a single deodorizing agent. The two play a synergistic role. Cucurbituril uses molecular adsorption to remove odors in the early stage, while probiotics effectively decompose food residues that are the source of odor in the later stage. By treating odor forms at different stages, the purpose of long-term odor removal is achieved.

[0084] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0085] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A dishwashing block for removing odors, characterized by: The deodorizing dishwashing block is composed of the following components by mass fraction: Anhydrous sodium sulfate 46.5% Sodium carbonate 15% AEO-3 2% Sodium percarbonate 20% Dispersant 9% Tetrasodium glutamate diacetate 0.5% Talc 1% PEG6000 1% Protease 1% Amylase 2% Cucurbituril 1% Lactobacillus 1% or Anhydrous sodium sulfate 45.5% Sodium carbonate 15% AEO-3 2% Sodium percarbonate 20% Dispersant 9% Tetrasodium glutamate diacetate 0.5% Talc 1% PEG6000 1% Protease 1% Amylase 2% Cucurbituril 2% Lactobacillus 1% or Anhydrous sodium sulfate 42.5% Sodium carbonate 15% AEO-3 2% Sodium percarbonate 20% Dispersant 9% Tetrasodium glutamate diacetate 0.5% Talc 1% PEG6000 1% Protease 1% Amylase 2% Cucurbituril 3% Lactobacillus 3% Wherein, the cucurbituril satisfies the following general formula: Where n=6-8; The dispersant is a high molecular polymer; The concentration of the lactobacillus is 1*10 11 cfu / g.

2. The method for preparing the odor-removing dishwashing block according to claim 1, wherein: The preparation method of the deodorizing dishwashing block comprises the following steps: S1: uniformly mixing the components according to the mass fraction ratio to obtain a mixture; S2: Screening the mixture to obtain mixed particles with a particle size of 10-90 mesh; S3: After the mixed particles are pressed into shape, a product is obtained.

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