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Guava fruit and leaf extract cyclodextrin inclusion compound and preparation method and application thereof

A technology of cyclodextrin inclusion compound and leaf extract, which is applied in the fields of application, food science, food ultrasonic treatment, etc., to achieve the effect of convenient consumption, easy absorption by human body, and various tastes

Inactive Publication Date: 2018-12-18
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no cyclodextrin inclusion complex of guava fruit leaf extract on the market

Method used

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  • Guava fruit and leaf extract cyclodextrin inclusion compound and preparation method and application thereof
  • Guava fruit and leaf extract cyclodextrin inclusion compound and preparation method and application thereof
  • Guava fruit and leaf extract cyclodextrin inclusion compound and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Weigh 100 g of guava leaves, wash and dry, break into lumps, add 1000 mL of 70% (v / v) edible ethanol, and ultrasonically extract for 30 min with a power of 300 W to obtain an extract. Add the extract to a vacuum rotary evaporator, evaporate and concentrate until the volume is about 30% of the original volume, add 10g of hydroxypropyl-β-cyclodextrin, mix well, place in a dark place, and use 120W power for continuous ultrasonication for 30 minutes. The temperature is 35°C. After the ultrasonication is over, the temperature is controlled at 50°C and magnetically stirred at a speed of 100rpm for 6h. During the stirring process, the pH of the solution is adjusted to maintain at 3-4, and then filtered through a 0.45μm water filter membrane to elute the unincluded extract The filtrate was cooled to 4°C, then placed in a -80°C ultra-low temperature refrigerator for 2 hours, placed in a freeze dryer, and freeze-dried overnight to obtain the inclusion complex of hydroxypropyl-β-cy...

Embodiment 2

[0055]Weigh 100 g of guava fruit slices, wash and dry, break into lumps, add 1000 mL of 70% (v / v) edible ethanol, and ultrasonically extract for 30 min with a power of 300 W to obtain an extract. Add the extract to a vacuum rotary evaporator, evaporate and concentrate to about 30% of the original volume, add 15g of hydroxypropyl-β-cyclodextrin, mix well, place in a dark place, and use 120W power for continuous ultrasonication for 30min at a temperature of 35 ℃, after the end of ultrasound, control the temperature at 60 ℃, magnetically stir at 100rpm for 6h, adjust the pH of the solution at 3-4 during the stirring process, and then filter through a 0.45μm water filter to elute the unincluded extract. After cooling the filtrate to 4°C, put it into a -80°C ultra-low temperature refrigerator to continue freezing for 2 hours, put it into a freeze dryer, and freeze-dry it overnight to obtain the hydroxypropyl-β-cyclodextrin inclusion complex of guava fruit extract dry powder.

Embodiment 3

[0057] Weigh 100g of guava fruit slices, wash and dry them, break them into lumps, add 1000mL of 100℃ hot water, let stand for leaching for 90min, and obtain the extract. Add the extract to a vacuum rotary evaporator, evaporate until concentrated to about 30% of the original volume, add 10g of γ-cyclodextrin, mix well, place in a dark place, stir magnetically at a speed of 100rpm at room temperature for 24h, pass through a 0.45μm Filtrate with an aqueous filter membrane to elute the unincluded extract, and directly spray-dry the filtrate to obtain the γ-cyclodextrin inclusion complex dry powder of the water extract of guava fruit slices.

[0058] The γ-cyclodextrin inclusion compound dry powder of the water extract of guava fruit slices obtained is mixed with citric acid and lactic acid according to the mass ratio of 5:2:1, dried, sealed and bagged to make a beverage infusion.

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Abstract

The present invention discloses a guava fruit and leaf extract cyclodextrin inclusion compound, a preparation method and an application thereof. After guava fruits and / or leaves are extracted, vacuumconcentrating is conducted; concentrated liquid is subjected to inclusion with cyclodextrin; and filtering, drying and crushing are conducted to obtain the guava fruit and leaf extract cyclodextrin inclusion compound. The guava fruit and leaf extract cyclodextrin inclusion compound can mask the bitter tastes of the fruits / leaves. The preparation method increases water solubility of functional components of flavonoids, polyphenols, etc. in the extract. The inclusion compound is stable, not easily oxidized and easily absorbed by human body. The prepared solid instant granule drink and preparation are convenient to eat, have various mouthfeel, have the anti-diarrhea and blood-sugar-lowering functional ingredients of the guava fruits / leaves, are healthy products suitable for related sub-healthgroups or patients, and have good application prospects.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a guava fruit leaf extract cyclodextrin inclusion compound and a preparation method and application thereof. Background technique [0002] Dried guava fruit and dried leaves are commonly used beverage brewing materials among the people. Generally, immature dried fruit slices, young leaf buds or old leaves of guava trees are used to dry leaves in the sun. Studies have shown that guava fruit and leaves have healthy functional components such as terpenoids, flavonoids, polyphenols, trace elements, fibers, etc., and have shown positive effects in antibacterial, anti-diarrhea, anti-cancer and hypoglycemic aspects, and have good anti-inflammatory properties. Oxidative properties, therefore, are recognized and popular, and are widely used in South America and Southeast Asia. [0003] At present, guava fruit / leaf is mainly eaten by brewing dried raw materials, but the rich functional ingr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/105A23P10/30A23L29/30A23L5/30
CPCA23V2002/00A23L5/32A23L29/35A23L33/105A23P10/30A23V2300/48A23V2200/32A23V2200/328A23V2250/5112
Inventor 吴振强邬亚男吴瀚聪
Owner SOUTH CHINA UNIV OF TECH
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