Litchi fresh-keeping liquid as well as preparation method and use method thereof
A technology of fresh-keeping liquid and litchi, which is applied in the field of fresh-keeping liquid and its preparation, can solve the problems of reducing fruit rot rate, reducing nutrient content, temperature instability, etc., and achieves inhibition of bacterial and fungal growth, delaying enzymatic browning of pericarp, The effect of preventing the degradation of the membrane structure
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Embodiment 1
[0054] A kind of lychee fresh-keeping liquid, by weight percentage, its formula is as follows:
[0055] Litchi bark extract 8%, litchi core extract 5%, sweet-scented osmanthus essential oil 0.05%, n-hexanol 0.5%, ascorbic acid 4%, citric acid 2%, and the rest is water.
[0056] The preparation method of lychee fresh-keeping solution comprises the steps:
[0057] (1) Preparation of litchi bark extract:
[0058] ①Pretreatment: take fresh lychee skin, wash, dry, crush and sieve to get lychee skin powder;
[0059] ②Extraction: Take the above-mentioned lychee peel powder, put it into a subcritical high-pressure reaction kettle, set the extraction temperature to 180°C, and the magnetic stirring speed to 200r / min, and add ultra-pure water 15 times the weight of the lychee peel powder for extraction. After the end, use a cooling machine to quickly cool, filter, and centrifuge to obtain the litchi peel extract;
[0060] ③ Drying: Use a rotary evaporator to concentrate the above litc...
Embodiment 2
[0085] A kind of lychee fresh-keeping liquid, by weight percentage, its formula is as follows:
[0086] Litchi peel extract 5%, litchi core extract 4%, osmanthus essential oil 0.04%, n-hexanol 0.4%, ascorbic acid 3%, citric acid 1%, and the rest is water.
[0087] The preparation method of lychee fresh-keeping solution comprises the steps:
[0088] (1) Preparation of litchi bark extract:
[0089] ①Pretreatment: take fresh lychee skin, wash, dry, crush and sieve to get lychee skin powder;
[0090] ②Extraction: Take the above-mentioned lychee peel powder, put it into a subcritical high-pressure reactor, set the extraction temperature to 200°C, and set the magnetic stirring speed to 150r / min, and add ultra-pure water 15 times the weight of the lychee peel powder for extraction. After the end, use a cooling machine to quickly cool, filter, and centrifuge to obtain the litchi peel extract;
[0091] ③Drying: Use a rotary evaporator to recover ethanol at 40°C, concentrate under re...
Embodiment 3
[0116] A kind of lychee fresh-keeping liquid, by weight percentage, its formula is as follows:
[0117] Litchi peel extract 10%, litchi core extract 6%, osmanthus essential oil 0.08%, n-hexanol 0.8%, ascorbic acid 5%, citric acid 3%, and the rest is water.
[0118] The preparation method of lychee fresh-keeping solution comprises the steps:
[0119] (1) Preparation of litchi bark extract:
[0120] ①Pretreatment: take fresh lychee skin, wash, dry, crush and sieve to get lychee skin powder;
[0121] ②Extraction: Take the above-mentioned lychee peel powder, put it into a subcritical high-pressure reaction kettle, set the extraction temperature to 200°C, and the magnetic stirring speed to 180r / min, and add ultra-pure water 18 times the weight of the lychee peel powder for extraction. After the end, use a cooling machine to quickly cool, filter, and centrifuge to obtain the litchi peel extract;
[0122] ③Drying: Use a rotary evaporator to concentrate the above litchi peel extrac...
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