Method for producing neohesperidin dihydrochalcone
A new hesperidin dihydrochalcone and square technology, which is applied in the field of extracting hesperidin and essential oils, can solve the problems of large solvent loss, long process, complex process, etc., and achieve the goal of increasing output and yield Effect
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Embodiment 1
[0024] A method for extracting essential oil and neohesperidin dihydrochalcone from orange peel, comprising the following steps:
[0025] 1) Select fresh orange peels without mildew, and put them in a cool, ventilated and dry place for later use;
[0026] 2) Soak 100 g of the orange peel in step 1) in 1 L of calcium carbonate saturated aqueous solution for 24 hours, remove and rinse;
[0027] 3) Cut the orange peel into 5mm square pieces, soak in 70% ethanol for 30 minutes, and remove the ethanol by rotary evaporation under reduced pressure;
[0028] 4) Irradiate under ultraviolet light for 15 minutes, send it into a screw press, add 100ml of pH regulator when pressing, the components of pH regulator are: 0.2mol / L NaCl and 0.1mol / L NaHCO 3 ;
[0029] 5) Take the filtrate after filtering the extruded product, and take out the filter residue for the subsequent production process of other products; according to the volume ratio of filtrate: sodium sulfate solution, add a sodium...
Embodiment 2
[0038] A method for extracting essential oil and neohesperidin dihydrochalcone from orange peel, comprising the following steps:
[0039] 1 Select fresh orange peels without mildew, and put them in a cool, ventilated and dry place for later use;
[0040] 2 Take 100 g of orange peels from step 1) and soak them in 1 L of calcium carbonate saturated aqueous solution for 24 hours, remove and rinse;
[0041] 3 Cut the orange peel into 5mm square pieces, soak in 70% ethanol for 40 minutes, and remove the ethanol by rotary evaporation under reduced pressure;
[0042] 4 Irradiate under ultraviolet light for 30 minutes, send it into the screw press, add 100ml of pH regulator when pressing, the components of the pH regulator are: 0.2mol / L NaCl and 0.1mol / L NaHCO 3 ;
[0043] ) to get the filtrate after filtering the squeezed matter, and take out the filter residue for the subsequent production process of other products; according to the filtrate: the sodium sulfate solution is a volum...
Embodiment 3
[0052] 1, by the essential oil component analysis that embodiment 1 extracts:
[0053] The components of essential oils were analyzed by GC-MS technology: D-limonene 81.17%, terpinene 6.27%, myrcene 2.96%, linalool 2.468%, 2-thujene 1.28%, terpinolene 1.046%, and other minor components.
[0054] 2. Qualitative identification of hesperidin
[0055] Take about 10 mg of the hesperidin sample of Example 1, add 20 ml of ethanol to heat to dissolve, shake and let cool, add a small amount of magnesium powder, slowly add 4 ml of hydrochloric acid dropwise along the tube wall, purple-red, hesperidin belongs to flavonoids, Most flavonoids, flavonols, dihydroflavones and dihydroflavonols are orange-red to purple-red, and the B ring has OH or OCH 3 When replacing, the color deepens accordingly. This reaction presents the characteristics of specific color development of flavonoids. Easily soluble in pyridine or dimethylformamide, insoluble in water, in line with the solubility properti...
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