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Antioxidants are substances that prevent or delay food oxidation, improve food stability, and extend storage life.Food antioxidants can be divided into oil-soluble antioxidants and water-soluble antioxidants based on their solubility properties.Oil soluble antioxidants can be soluble in fats and oils, and have a good antioxidant effect on fats and fatty foods, preventing their oxidation, rancidity, and oil burning. Commonly used include butyl ether, dibutyl light toluene, gallic acid propionic acid vinegar, etc.TBHQ may volatilize faster than BHT.
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Animal fats undergo a series of reactions such as the aggregation of fats, the production and transmission of free radicals, and so on at high temperatures. At the same time, animal fats lack natural antioxidants, so it is necessary to add effective antioxidants to maintain an appropriate shelf life. Chen Yongquan et al. measured the changes in peroxide value of samples added with different antioxidants in lard while studying the antioxidant properties of TBHQ.
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When the oil contains a large amount of metal ions and oxygen, the addition of antioxidants can inhibit the formation of peroxides. When citric acid is combined with antioxidants, the higher the content of these impurities in the oil, the more obvious the synergistic effect. TBHQ has good oil solubility and thermal stability, and does not change in color after heating. It can be added before and after the deodorization process of oil.
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According to the hygiene standard GB2760 (0.4007) for the use of food additives in the People's Republic of China, TBHQ can be used for edible oils, fried foods, dried fish products, biscuits, instant noodles, instant boiled rice, canned dried fruits, pickled meat products, roasted and fried nut foods (supplemented in February 2007), etc. The maximum usage is 0.2g/kg. It is generally recommended to use 0.01~0.02% of the total amount of oil.One dose is versatile and can effectively inhibit the growth of bacteria and molds.
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Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-0Antioxidants are substances that prevent or delay oxidation of food, improve the stability of food and extend the storage period.Food antioxidants can be divided into oil-soluble antioxidants and water-soluble antioxidants according to their solubility properties.
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1.Product CharacteristicsTertiary butylhydroquinone(TBHQ), white or slightly reddish brown crystalline powder, has a very light special fragrance, almost insoluble in water (about 5 per cent), soluble in ethanol, ethyl acetate, ether and other organic solvents.Tertiary butylhydroquinone has synergistic properties and can be used synergistically with other antioxidants (e.g. BHA, B HT) as well as chelating agents (e.g.
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White or off-white crystalline powder; slight odor, non-toxic; main component content ≥98.5%; relative density 1.09; melting point 212-218℃; solubility (g/100g solvent, 25℃): ethanol 35.1, acetone 39.0, ethyl acetate 48.8, benzene 1.5, insoluble in gasoline, insoluble in water; colorless, non-polluting, easy to disperse, etc. Characteristicsf DTBHQ:Chemical name: 2,5-Di-tert-butylhydroquinone (2,5-di-tert-butylhydroquinone), abbreviation: DTBHQEnglish name: 2,5-Di-tert-butylhydroquinone (DTBHQ)Molecular formula: C14H22O2Molecular weight: 222.33Classification belongs to: Polyphenols CAS: 8
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The seed method first completely dissolves TBHQ in a small amount of oil or 95% alcohol solution, and prepares 5-10% TBHQ oil or alcohol solution. Then, directly or with a measuring device, it is added to the fat or oil and stirred evenly.Fully dissolve and evenly disperse TBHQ in oil, otherwise it will affect the antioxidant effectSome organic acids and their derivatives can enhance the activity of TBHQ. It is better to mix it with 0010.02% citric acid.This product cannot be mixed with PG (Propyl Gallate) for use.
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In the United States and China, the maximum allowable dosage of TBHQ in food is 200ppm,At present, the production of tert butyl hydroquinone both domestically and internationally adopts the tert butylation method of hydroquinone, as shown in Figure 2. According to different classifications of alkylation reagents.Both domestic and foreign patent literature have reported this process, such as using toluene or xylene as solvents, the selectivity and yield of this reaction are relatively ideal.
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The US Food and Drug Administration (FDA) allows TBHQ to be used alone or in combination (with BHA or BHT) for oil or fatty foods, including volatile essential oils, with a maximum allowable dosage of 200PPM. It can also be used in non-alcoholic beverages, margarine, and mixed nuts.TBHQ, also known as tert butyl hydroquinone, is a phenolic oil soluble antioxidant. TBHQ has high efficiency and stability, which can extend the shelf life of foods rich in oil and improve food safety.
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It is soluble in ethanol, acetic acid, ethyl ester, isopropanol, ether, and oils, and is almost insoluble in water (25 ℃,<1%; 95 ℃, 5%). TBHQ is an oil soluble antioxidant that can prevent or delay the oxidation and deterioration of fats in food. As a food additive, TBHQ has been used in more than 20 countries such as the United States. In 1992, China was approved for use in oil and fat containing foods, dried fish products, biscuits, instant noodles, canned oil containing foods, pickled meat products, etc.
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1.Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-0As a food additive, TBHQ has been used in more than 20 countries, such as the United States, and was approved to be used in oil and fat-containing foods, fish products, biscuits, quick-cooking noodles, canned fat-containing foods, and cured meat products in China in 1992. In the United States and China, the maximum permitted dosage of TBHQ in food is 200 ppm. the effect is not very ideal. Isobutene has higher activity than tert butanol, and its application and promotion prospects are very optimistic.
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Scope of applicationAccording to GB2760(0.4007), the hygienic standard of the People's Republic of China for the use of food additives, TBHQ can be used in edible fats and oils, deep-fried food, dried fish products, biscuits, instant noodle, instant rice, canned dried fruits, cured meat products, roasted and stir-fried nuts (February 2007 supplement), etc. The maximum use level is 0.2g/kg, and the general recommended use level is 0.01~0.02% of the total amount of fats and oils.
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Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-0Product AdvantagesNowadays, as the synthesis cost continues to decrease, the application scope is gradually expanded to petrochemical industry, feed industry, electronic industry, battery industry, etc..Academic research and developmentTertiary butylhydroquinone is a chemically synthesized antioxidant, due to its antioxidant effect, is widely used in the food industry, feed industry, petrochemical industry, paint industry, electronics industry, cosmetics industry, etc., the application prospect is very broad
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White or off-white crystalline powder; moderate smell, non-toxic; most important issue content ≥98.5%; relative density 1.09; melting point 212-218℃; solubility (g/100g solvent, 25℃): ethanol 35.1, acetone 39.0, ethyl acetate forty eight.eight, benzene 1.5, insoluble in fuel, insoluble in water; colorless, non-polluting, smooth to disperse, and so forth. Characteristicsf DTBHQ:Chemical call: 2,five-di-tert-butylhydroquinone (2,5-di-tert-butylhydroquinone)Abbreviation: DTBHQEnglish name: 2,five-di-tert-butylhydroquinone (DTBHQ)Molecular formula: C14H22O2Molecular weight: 222.33Type
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Physical and chemical properties:Density: 1.328g/cm3Melting point: 172-175℃Boiling point: 286℃Flash factor: 141.6Refractive index: 1.612Vital temperature: 549.9℃Crucial stress: 7.45mpaIgnition temperature: 516℃Explosion limit (v/v): 15.3%Lower explosion restrict (v/v): 1.6 %Property: White needle crystal, discolored through light, with special odor.Solubility: Soluble in hot water, soluble in bloodless water, ethanol and ether, slightly soluble in benzene. Packaging, storage, transportation:1: 25kg (internet weight) kraft paper laminated bag, coated with double polyethylene plastic bag.2:
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TBHQ may volatilize faster than BHT. Therefore, the application of microcapsule technology can solve this problem under high temperature conditions. Using natural antioxidant tea polyphenols, BHA, BHT, and synergistic agent citric acid as the core material, and food grade natural substance p-cyclodextrin as the wall material, microcapsule antioxidant was prepared using microcapsule technology.Water soluble antioxidants are soluble in water and mainly used for food oxidation and discoloration.
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At present, the most commonly used antioxidants for oils and their products are BHA, BHT, PG, TBHQ, and tocopherols. As for vegetable oils, their antioxidant capacity is in the order of TBHQ>PG>BHT>BHA. As for animal fats, the order of their antioxidant capacity is TBHQ>PG>BHA>BHT. For anhydrous milk fat, their antioxidant capacity is in the order of PG>TBHQ>BHA>tocopherols.
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Physical and chemical properties:Density: 1.328g/cm3Melting point: 172-175℃Boiling point: 286℃Flash point: 141.6Refractive index: 1.612Critical temperature: 549.9℃Critical pressure: 7.45MPaIgnition temperature: 516℃Explosion limit (V/V): 15.3%Lower explosion limit (V/V): 1.6 %Property: white needle crystal, discolored by light, with special odorSolubility: soluble in hot water, soluble in cold water, ethanol and ether, slightly soluble in benzene Packaging, storage, transportation:1: 25KG (net weight) kraft paper laminated bag, lined with double polyethylene plastic bag.2: Store in a cool
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Tert butyl hydroquinone (TBHQ), also known as tert butyl hydroquinone, is a white crystalline powder with a melting point of 126.5-128.5 ℃ and a boiling point of 300 ℃. Its CAS number is 1948-33-0, and it is easily soluble in ethanol and ether. It is the most effective antioxidant for most oils, especially vegetable oils. T-butylhydroquinone, abbreviated as TBHQ, has a molecular formula of Cl0H1402 and a molecular weight of 166.22. [1] It is a white to light gray crystalline or crystalline powder with a very slight special odor.
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1.Product Characteristics1. Synthetic oil antioxidant TBHQ is a highly efficient, low-toxicity phenolic antioxidant with excellent antioxidant effect, and the antioxidant capacity is up to 5-7 times compared with existing food antioxidants such as BHA, BHT and PG.2. Synergistic: TBHQ can be used together with other antioxidants (such as BHA, B HT) and chelating agents (such as citric acid, etc.).3. High temperature resistance: TBHQ can be used in high temperature processed food, such as frying food, with good thermal stability.4.
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1.Product ParametersMolecular formula: C10H14O2Molecular weight: 166.22CAS No.: 1948-33-0The oil in oily food undergoes oxidation in the air, producing free radicals and peroxides, which are early indicators of food rancidity. Peroxides further decompose to form small organic compounds such as aldehydes, ketones, and acids, which directly affect the taste and flavor of the product and cause great harm to human health.
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The main mechanism of TBHQ is to provide hydrogen to the free radicals R or RO0 in oils and fats, which can form stable dimers and become relatively stable substances.Temperature is the most important factor affecting oil oxidation, similar to general chemical reactions. As the temperature increases, the automatic oxidation rate of oil in the food increases. For every 10C increase in temperature. In addition, essential fatty acids such as linoleic acid and linolenic acid in oil are also damaged, reducing the nutritional function of the product.
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Product DescriptionIn addition, TBHQ also has characteristics such as high temperature resistance, oil solubility, and antibacterial properties, which are widely used in edible oils, fried foods, etc. By comparing the effects of various antioxidants in different products, summarizing the usage patterns, and providing theoretical basis for the application of TBHQ.The oil in oily food undergoes oxidation in the air, producing free radicals and peroxides, which are early indicators of food rancidity.
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