Additive for fresh keeping of oranges and application
A preservative and additive technology, applied in the field of citrus storage and preservation, can solve the problems of citrus fruit edible safety hazards, complex types of added ingredients, prolonging the preservation time of citrus, etc., to delay the change of peel hardness and color difference value, and efficiently preserve freshness Good effect, water retention effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0037] As an embodiment, the present invention provides a citrus fresh-keeping emulsifier, the preparation method of which includes: heating 22-30 double-carbon long multi-carbon chain aldehydes, emulsifier raw materials and partially deionized water to 90°C while stirring Melt the raw materials, slowly add a portion of deionized water at 95°C ± 5°C dropwise to the reaction system to form a microemulsion, and finally add the remaining 95°C ± 5°C deionized water to make up the volume, and cool down with water. Wherein, the optional raw materials of the emulsifier are oleic acid and morpholine, and the emulsifier morpholine fatty acid salt is obtained by the reaction. Those skilled in the art can also select a suitable emulsifier according to the emulsification situation.
[0038]Experiments have confirmed that the 24-aldehyde and 26-aldehyde coatings prepared by using morpholine fatty acid salt as an emulsifier can significantly reduce the weight loss rate of Yunnan plateau man...
Embodiment 1
[0041] Correlation analysis between external wax and water loss in different citrus varieties:
[0042] Sample information
[0043] All citrus varieties were picked from the citrus resource garden of Huazhong Agricultural University. The picking time is the commercial ripening period of the fruit. Varieties include: Yiyuan No. 3, Cocktail Grapefruit, Cram Navel Orange, Royal Grapefruit, Gaoban Pomelo, Wanmi No. 2, ZTI Navel Orange, 72-1 Navel Orange, Xinnu Ponkan, Qingjiang Ponkan, Gillete Navel Orange, February Red Navel orange, Newhall navel orange, red heart grapefruit, Meishan seedless golden orange, oroblanco grapefruit, old bud line navel orange, HB grapefruit, ugli tanger, otangique, Clementine nour, Flame grapefruit, red-fleshed navel orange.
[0044] 1. Weight loss test: 10-20 fruits from different varieties or treatment groups were taken, and the weight of the fruits was checked regularly after numbering, once every 6 days, for a total of 30 days. Fruit storage te...
Embodiment 2
[0061] Synthesis of 24 aldehydes:
[0062] Accurately weigh Dess-Martin reagent (9.03 g, 21.30 mmol) and sodium bicarbonate (22.68 g, 269.98 mmol) into a 1L single-neck round-bottomed flask containing 600 mL of dichloromethane solvent, and then slowly add 1-dichloromethane. tetradecanol (5.00 g, 14.20 mmol) and stirred at room temperature for 1 hour. 300 mL of saturated aqueous sodium bicarbonate solution was added to the round-bottomed flask, extracted with 100 mL×3 dichloromethane, the organic phases were combined and washed with saturated brine (50 mL), dried with anhydrous sodium sulfate, and removed under vacuum with a rotary evaporator The solvent was then separated by flash silica gel column chromatography (eluent: dichloromethane / n-hexane (volume ratio) = 1:3) to obtain a white solid target product of 3.78 g in weight, behenyltetraaldehyde, with a yield of 76% .
[0063] 1 H NMR (600MHz, CDCl 3 )δ(ppm)9.76(t,J=1.8Hz,1H,- CHO ),2.41(dt,J=7.4,1.8Hz,2H,- CH 2 -CH...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Probe diameter | aaaaa | aaaaa |
| Penetration rate | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More