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A method for extracting pumpkin seed phylloquinone based on subcritical fluid and molecular distillation

A subcritical fluid and molecular distillation technology, which is applied in the direction of fat oil/fat separation, fat generation, fat oil/fat production, etc., can solve the problems of low economic benefits of pumpkin seeds, increase production but not increase efficiency, etc., and improve deep processing and market added value , The process route is simple and the effect of few steps

Active Publication Date: 2020-11-20
国农绿源(北京)农业科技研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the supply of raw materials, the economic benefits of pumpkin seeds after harvesting are low, so that the actual problem of increasing production without increasing efficiency has emerged

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for extracting pumpkin seed phylloquinone based on subcritical fluid and molecular distillation is carried out according to the following steps:

[0020] (1) Raw material pretreatment: select mature and plump pumpkin seeds as raw materials, place them in an oven and dry them at 47°C for 51 hours to obtain pumpkin seeds with a moisture content of 2.5%, and then put the dried pumpkin seeds into a grinder for crushing After passing through a 40-mesh sieve, the seed kernel powder is obtained for subsequent use;

[0021] (2) Subcritical fluid extraction: put the above-mentioned seed kernel powder into 210-mesh mesh silk and put it into the subcritical extraction kettle, and use a vacuum pump to make the vacuum degree in the subcritical extraction kettle and the separation kettle be -0.1MPa. Inject the extraction solvent n-butane into the subcritical extraction kettle until the sample is completely submerged. Use a hot water circulation system to heat the extraction ...

Embodiment 2

[0028] A method for extracting pumpkin seed phylloquinone based on subcritical fluid and molecular distillation is carried out according to the following steps:

[0029] (1) Raw material pretreatment: select mature and plump pumpkin seeds as raw materials, place them in an oven and dry them at 52°C for 53 hours to obtain pumpkin seeds with a moisture content of 2.2%, and then put the dried pumpkin seeds into a grinder for crushing After passing through a 50-mesh sieve, the seed kernel powder is obtained for subsequent use;

[0030] (2) Subcritical fluid extraction: put the above-mentioned seed kernel powder into 220 mesh silk and put it into the subcritical extraction kettle, and use a vacuum pump to make the vacuum in the subcritical extraction kettle and the separation kettle be -0.08MPa. Inject the extraction solvent n-butane into the subcritical extraction kettle until the sample is completely submerged. Use a hot water circulation system to heat the extraction kettle so t...

Embodiment 3

[0037] A method for extracting pumpkin seed phylloquinone based on subcritical fluid and molecular distillation is carried out according to the following steps:

[0038] (1) Raw material pretreatment: select mature and plump pumpkin seeds as raw materials, place them in an oven and dry them at 57°C for 55 hours to obtain pumpkin seeds with a moisture content of 2%, and then put the dried pumpkin seeds into a grinder for crushing After passing through a 60-mesh sieve, the seed kernel powder is obtained for subsequent use;

[0039](2) Subcritical fluid extraction: put the above-mentioned seed powder into 230 mesh silk and put it into the subcritical extraction kettle, and use a vacuum pump to make the vacuum degree in the subcritical extraction kettle and the separation kettle be -0.05MPa. Inject the extraction solvent n-butane into the subcritical extraction kettle until the sample is completely submerged. Use a hot water circulation system to heat the extraction kettle so that...

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Abstract

The present invention discloses a method for extracting pumpkin seed vitamin K1 based on subcritical fluid and molecular distillation, wherein the method comprises raw material pretreatment, subcritical fluid extraction, desolvation, deodorization, methyl esterification, first molecular distillation, and second molecular distillation. According to the present invention, the prepared pumpkin seed vitamin K1 is the food grade, and has the high purity; the technical route uses the subcritical fluid extraction and molecular distillation method; and the method has advantages of simple process route, less steps and low cost, and can improve the deep processing and market added value of the refined by-product.

Description

technical field [0001] The invention belongs to the technical field of extraction and separation of natural products, and in particular relates to a method for extracting pumpkin seed phylloquinone based on subcritical fluid and molecular distillation. Background technique [0002] Pumpkin seeds are the seeds of edible pumpkins. They are rich in nutrients and are precious non-staple food and health food. Health food such as processed food produced from pumpkin seeds has become a hot seller in domestic and foreign markets, and it is an important agricultural product that earns foreign exchange through export. Due to the supply of raw materials, the economic benefits of pumpkin seeds after harvesting are low, so that the actual problem of increasing production without increasing efficiency has emerged. Pumpkin seeds contain a large amount of natural oil (350-600g / kg), and there are differences between different origins and varieties. Natural pumpkin seed oil contains high co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B7/00C11B1/10
CPCC11B1/10C11B7/00
Inventor 李全宏于国泳聂立俊
Owner 国农绿源(北京)农业科技研究院有限公司
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