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A kind of aloe vera extract and extract technology, applied in the application, food science, food preservation and other directions, can solve the problem of not meeting the needs of use, and achieve the effects of reducing abrasion and browning, reducing water evaporation, and delaying the rate of decline
Inactive Publication Date: 2015-11-25
刘静兵
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This kind of manual workshop method obviously cannot meet the needs of use
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Embodiment 1
[0011] Aloe Vera Extract is produced by:
[0012] (1) Take aloe vera, crush it, soak it with 5-15 times the amount of 50-100% ethanol aqueous solution, then reflux and extract several times, extract for 1-5 hours each time, filter to obtain the ethanol extract and filter residue, combine the ethanol extract, and let it stand 12~48h, filter off the precipitate, recover the solvent to get the crude extract; (2) put the water-soluble crude extract on a macroporous adsorption resin column, wash off the sugar with water, elute with 50~100% ethanol aqueous solution, collect the ethanol for elution (3) The water-soluble extract is extracted with 10 to 20 times the amount of dichloromethane, ethyl acetate, and n-butanol in sequence; the remaining aqueous phase after concentration and extraction is washed with methanol until the concentrate cannot Dissolved again to obtain the final extract.
Embodiment 2
[0014] Fruit and vegetable preservative, composed of the following components by mass fraction: 50% citric acid, sodium bisulfite, 10% aloe extract, 10% lotus leaf extract, 0.03% phytate, 1% amino acid, 1% vitamin B. 1% niacin, 1% Vc, 0.1% trace elements (iron, copper, zinc, cobalt, manganese, chromium, selenium, iodine, nickel, fluorine, molybdenum, vanadium, tin, silicon, strontium, boron, rubidium, Arsenic, equal weight), the sum of the mass fractions of each component is 100%.
[0015] The above components are firstly dissolved in water, then dried and packaged. When using, first use cold boiled water to make a paste of the antistaling agent to be used, so as not to see dry powder, and then dilute it with sterile water at a ratio of 1.5--2%. During the dilution process, you can use it while stirring. The wooden stick scrapes the paste to the four walls of the container, spreads it thinly, and the preservative can be dissolved.
[0016] Generally, the method of spraying o...
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Abstract
The invention discloses an aloe extract and application thereof. A preparation method for the aloe extract comprises the following steps: (1) weighing and crushing aloe, soaking the crushed aloe with an aqueous ethanol solution having a concentration of 50 to 100% and accounting for 5 to 15 times of the crushed aloe, then carrying out reflux extraction several times, wherein extraction lasts for 1 to 5 h each time, carrying out filtering to obtain ethanol extracts and filter residues, combining the ethanol extracts, carrying out standing for 12 to 48 h, removing sediments through filtering and recovering the solvent to obtain a crude extract; (2) dissolving the crude extract with water, introducing the dissolved crude extract into a macroporous adsorption resin column, carrying out washing and desugaring, then carrying out elution with the aqueous ethanol solution having a concentration of 50 to 100%, collecting ethanol eluate and recovering the solvent so as to obtain an extract; and (3) dissolving crude extract with water, successively carrying out extraction with dichloromethane, ethyl acetate and n-butanol accounting for 5 to 15 times of the dissolved extract, carrying out concentration and extraction so as to obtain a water phase and then carrying out washing with methanol until a concentrate cannot be dissolved so as to obtain the final extract. The aloe extract provided by the invention can effectively prolong the shelf life of fruit and vegetable, reduce release of ethylene gas, maintain hardness of fruit and vegetable, delay the decrease speed of chlorophyll, decrease moisture evaporation, lower low temperature damage of fruit and vegetable, retain balance between sugar degree and acidity and improve luster of fruit and vegetable.
Description
technical field [0001] The invention belongs to the technical field of natural plant extracts, in particular to an aloe extract and its application. Background technique [0002] Aloe belongs to the genus Aloe (scientific name: Aloe), commonly known as aloe, native to the Mediterranean Sea and Africa, and is a perennial herb of the Cyraceae family. Aloe extract, colorless transparent to brown slightly viscous liquid, yellow fine powder after drying. No smell or slightly specific smell. [0003] Aloe vera active ingredients have long been prepared in the form of aloe vera gel. At first, it is obtained by cutting the leaves of aloe vera, collecting the leaf juice, boiling it in a pot to make a thick paste, then soaking it in a container, cooling and solidifying. It can be seen that this aloe vera gel can only be said to be a crude product. The method of heating with a pot will decompose most of the natural active ingredients, so it is mainly used as a laxative. This kind o...
Claims
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Application Information
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