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Method for preparing citrus essential oil, flavonoid, pectin and dietary fiber

A technology of citrus essential oil and dietary fiber, which is applied in the fields of essential oils/spices, food science, and food ingredients containing natural extracts, etc. It can solve the problems of low extraction rate, single extraction product, and poor economic benefits, so as to improve the extraction rate, The effect of improving economic efficiency and reducing dosage

Pending Publication Date: 2021-02-05
JIANGSU HAGONG PHARMA MACHINE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing citrus essential oil, flavonoids, pectin and dietary fiber, which prolongs the citrus industrial chain, and simultaneously extracts citrus essential oil, flavonoids, pectin and Dietary fiber is extracted, which realizes the comprehensive development and utilization of citrus peel, and solves the problems of single extraction product, low extraction rate and poor economic benefit of citrus peel

Method used

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  • Method for preparing citrus essential oil, flavonoid, pectin and dietary fiber

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Experimental program
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Effect test

Embodiment 1

[0029] Comparison of traditional distillation and ultrasonic-distillation extraction of citrus essential oil.

[0030] Direct extraction of citrus essential oils by traditional distillation

[0031] Select a fresh citrus fruit—citrus citrus, weigh 2 portions of 100g fresh citrus peel, wash and remove impurities, dry the citrus peel, and crush the cleaned citrus peel into pieces of about 10mm with a crushing machine. Citrus peel pieces and distilled water are added to the retort according to the solid-to-liquid ratio of 1:5kg / L, and 2% NaCl is added as an additive, and distilled and extracted. When the distillate oil layer basically no longer increases, it can be stopped. It needs to be distilled for 90 minutes, and then low temperature Stand at 4°C for 24 hours, separate oil from water by sedimentation, absorb the upper oil layer to obtain crude orange peel essential oil, add 0.5% anhydrous calcium chloride to the crude orange peel essential oil, stir and let it stand for a pe...

Embodiment 2

[0036] Fresh citrus peels and citrus peels after extracting citrus essential oils were used as raw materials for comparison

[0037] Experiment (1) Yield of direct extraction of citrus flavonoids using fresh citrus peel as raw material

[0038] Extract citrus flavonoids from fresh citrus peels: Weigh 200g of fresh citrus peels, wash and remove impurities, dry the citrus peels, crush the dried citrus peels into pieces of about 10mm with a crushing machine, add 6 times 75 % ethanol solution, continuous ultrasonic extraction at a temperature of 40°C for 30 minutes, and filtration to obtain the filtrate; the filtrate was concentrated at a low temperature of 50°C; the concentrated solution was allowed to stand at 4°C for 24 hours, recrystallized, crystallized and filtered, and the filter cake was placed in a vacuum Low-temperature drying in a freeze dryer to obtain 3.26 g of high-purity flavonoid products;

[0039] Experiment (2) extracting citrus flavonoids from citrus peels afte...

Embodiment 3

[0047] A method for preparing citrus essential oil, flavonoids, pectin and dietary fiber, comprising the following steps:

[0048] 1) Material pretreatment: Clean and remove impurities from fresh citrus peels, dry them so that the water content of citrus peels is 8%, and crush the dried citrus peels into 10mm citrus peel fragments for later use, such as citrus peels As a dry material, it can be directly broken into citrus peel pieces;

[0049] 2) Extraction of citrus essential oil by ultrasonic-distillation: add the citrus peel fragments and distilled water prepared in step 1) into a continuous ultrasonic extraction device at a solid-to-liquid ratio of 1:4kg / L, extract for 10 minutes, and add 3% NaCl as an additive after continuous ultrasonic extraction , carry out steam distillation, and stop when the distillate oil layer no longer increases, and leave the distillate for 24 hours to obtain citrus crude essential oil and citrus peel residue liquid, add desiccant 0.8% anhydrous...

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Abstract

The invention discloses a method for preparing citrus essential oil, flavonoid, pectin and dietary fiber. The method comprises the following steps: (1) pretreating materials; (2) extracting citrus essential oil by an ultrasonic-distillation method; (3) extracting a citrus flavonoid product by an ultrasonic method; (4) extracting citrus pectin by an acid extraction and alcohol precipitation method;and (5) preparing citrus dietary fiber. According to the method, the citrus industry chain is prolonged, continuous extraction of the citrus essential oil, flavonoid, pectin and dietary fiber from citrus peels can be completed in one production line, comprehensive development and efficient utilization of the citrus peels are achieved, and the economic benefits of the citrus peels are increased.

Description

technical field [0001] The invention relates to a method for preparing citrus essential oil, flavonoids, pectin and dietary fiber, which can be extracted from citrus peel. Background technique [0002] Citrus is a general term for plants of the Citrinae subfamily (Citreae) of the Citrus subfamily (Auramtioideae) in the Rutaceae (Rutaceae), mainly including sweet oranges, broad-skinned citrus, grapefruit and pomelo, lemons, Miscellaneous oranges and kumquats, etc. [0003] In 2018, my country's citrus cultivation area reached more than 40 million mu, and its output reached more than 39 million tons. It is the fruit with the largest cultivation area and output in my country. In my country, citrus is mainly eaten fresh, and citrus peels generally account for 25 to 40% of the total weight of fresh fruits. Therefore, the annual output of citrus peels exceeds 10 million tons. Except for a small part of these citrus peels that are processed and utilized, most of them are used as a...

Claims

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Application Information

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IPC IPC(8): A23L33/21A23L33/105C11B9/02C07D311/30C07D311/40C07G99/00C08B37/06
CPCA23L33/21A23L33/105C11B9/025C07D311/30C07D311/40C08B37/0048A23V2002/00C07G99/00A23V2250/21
Inventor 赵亮刘兆宇
Owner JIANGSU HAGONG PHARMA MACHINE TECH CO LTD
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