Longan essence as well as preparation method and application thereof in cigarettes
A longan essence and longan technology are applied in the directions of preparing tobacco, application, essential oil/spice, etc., and achieving the effects of simple process, easy control and low cost
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Embodiment 1
[0026] A preparation method of longan essence, which comprises the following steps:
[0027] (1) Peeling and removing seeds: Select mature longan with high sugar content and high juice yield, remove the skin and longan seeds with a knife to obtain longan pulp;
[0028] (2) Crushing and beating: the longan pulp is beaten with a high-speed tissue masher for 2 minutes at a speed of 11,000 rpm to obtain longan pulp;
[0029] (3) Filtration under reduced pressure: filter the obtained longan pulp with a Buchner funnel under reduced pressure, and collect the filtrate;
[0030] (4) Concentration under reduced pressure: Concentrate the filtrate under reduced pressure at 45°C and 55KPa to obtain concentrated longan juice. The dry matter content in the concentrated longan juice is 30%;
[0031] (5) Maillard reaction: Add 30g of longan concentrated juice, 10g of maltose, 10g of proline and 400g of propylene glycol in a 1000ml three-neck flask equipped with a reflux tube and a stirrer, he...
Embodiment 2
[0043] A preparation method of longan essence, which comprises the following steps:
[0044] (1) Peeling and removing seeds: Select mature longan with high sugar content and high juice yield, remove the skin and longan seeds with a knife to obtain longan pulp;
[0045] (2) Crushing and beating: the longan pulp was beaten for 15 minutes with a high-speed tissue masher at a speed of 12000 rpm to obtain longan pulp;
[0046] (3) Filtration under reduced pressure: filter the obtained longan pulp with a Buchner funnel under reduced pressure, and collect the filtrate;
[0047] (4) Concentration under reduced pressure: Concentrate the filtrate under reduced pressure at 60°C and 65KPa to obtain concentrated longan juice. The dry matter content in the concentrated longan juice is 25%;
[0048] (5) Maillard reaction: add 40g of longan concentrated juice, 10g of honey, 10g of glycine and 400g of propylene glycol to a 1000ml three-necked bottle equipped with a reflux tube and a stirrer, ...
Embodiment 3
[0057] A preparation method of longan essence, which comprises the following steps:
[0058] (1) Peeling and removing seeds: Select mature longan with high sugar content and high juice yield, remove the skin and longan seeds with a knife to obtain longan pulp;
[0059] (2) Crushing and beating: the longan pulp was beaten with a high-speed tissue masher for 20 minutes at a speed of 10,000 rpm to obtain longan pulp;
[0060] (3) Filtration under reduced pressure: filter the obtained longan pulp with a Buchner funnel under reduced pressure, and collect the filtrate;
[0061] (4) Concentration under reduced pressure: Concentrate the filtrate under reduced pressure at 40°C and 70KPa to obtain concentrated longan juice. The dry matter content in the concentrated longan juice is 35%;
[0062] (5) Maillard reaction: Add 30g of longan juice concentrate, 10g of malt extract, 5g of alanine and 350g of propylene glycol in sequence in a 1000ml three-neck flask equipped with a reflux tube ...
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