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Intermittent drying process for improving bonded phenol in litchi pomace and application thereof

A drying process and litchi fruit technology, applied in the fields of application, food drying, drying solid materials, etc., can solve the problems such as the decrease of the mass fraction of bound phenols and the discussion of changes

Active Publication Date: 2021-06-08
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Li Yuanzhi et al. compared the effects of hot air drying and heat pump drying on the quality of litchi fruit. Xu Fengying et al. studied the effects of different radiation sources on the quality of dried litchi fruit, but they did not discuss the changes of bound phenols in litchi pulp; Tang Daobang In the study of using heat pump to dry litchi pulp, they found that the mass fraction of bound phenols in litchi decreased.

Method used

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  • Intermittent drying process for improving bonded phenol in litchi pomace and application thereof
  • Intermittent drying process for improving bonded phenol in litchi pomace and application thereof
  • Intermittent drying process for improving bonded phenol in litchi pomace and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 500g of lychee pomace and dry it with a specially controlled intermittent process-heat pump infrared combined drying. The specific steps are as follows:

[0039] S1: peeling and removing the pits of fresh lychees, then washing the obtained lychee pulp, then squeezing and centrifuging the lychee pulp to obtain lychee pomace;

[0040] S2: ① Dry the fresh lychee pomace first with heat pump for 1 hour, heat pump combined with infrared drying for 4 hours, and stop for 2 hours; 25h, excluding downtime); Among them, the heat pump temperature is 50°C, the heat pump wind speed is 1.0m / s, the far-infrared radiation power is 1000w, and the distance from the radiation plate is 10cm (the heat pump combined with infrared dryer is in the heat pump dryer WRH-100TB ( Guangdong Weierxin Industrial Co., Ltd.) The left and right walls of the drying room are laid with far-infrared radiation heating panels (customized by Yancheng Gemei Electric Heating Technology Co., Ltd., emissivity 0...

Embodiment 2

[0044] Take 500g of lychee pomace and dry it with a specially controlled intermittent process-heat pump infrared combined drying. The specific steps are as follows:

[0045] S1: peeling and removing the pits of fresh lychees, then washing the obtained lychee pulp, then squeezing and centrifuging the lychee pulp to obtain lychee pomace;

[0046] S2: ① Dry the fresh lychee pomace first with heat pump for 1 hour, heat pump combined with infrared drying for 4 hours, and stop for 2 hours; 25h, excluding downtime); Among them, the heat pump temperature is 60°C, the heat pump wind speed is 1.5m / s, the far-infrared radiation power is 2000w, and the distance from the radiation plate is 10cm (the heat pump combined with infrared dryer is in the heat pump dryer WRH-100TB ( Guangdong Weierxin Industrial Co., Ltd.) The left and right walls of the drying room are laid with far-infrared radiation heating panels (customized by Yancheng Gemei Electric Heating Technology Co., Ltd., emissivity 0.9...

Embodiment 3

[0050] Take 500g of lychee pomace and dry it with a specially controlled intermittent process-heat pump infrared combined drying. The specific steps are as follows:

[0051] S1: peeling and removing the pits of fresh lychees, then washing the obtained lychee pulp, then squeezing and centrifuging the lychee pulp to obtain lychee pomace;

[0052] S2: ① Dry the fresh lychee pomace first with heat pump for 1 hour, heat pump combined with infrared drying for 4 hours, and stop for 2 hours; 25h, excluding downtime); Among them, the heat pump temperature is 90°C, the heat pump wind speed is 2.0m / s, the far-infrared radiation power is 3000w, and the distance from the radiation plate is 10cm (the heat pump combined with infrared dryer is in the heat pump dryer WRH-100TB ( Guangdong Weierxin Industrial Co., Ltd.) The left and right walls of the drying room are laid with far-infrared radiation heating panels (customized by Yancheng Gemei Electric Heating Technology Co., Ltd., emissivity 0...

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Abstract

The invention discloses an intermittent drying process for improving bonded phenol in litchi pomace and application thereof. The drying process comprises the steps of: (1) pretreatment: after peeling, denucleating and cleaning litchis, carrying out juicing, and centrifuging to remove supernatant so as to obtain litchi pomace; and (2) intermittent process and heat pump infrared combined drying: carrying out intermittent process and heat pump infrared combined drying on the litchi pomace to obtain the dried litchi pomace. According to the invention, the dried litchi pomace can be further subjected to superfine grinding to obtain litchi fruit powder. According to the drying process disclosed by the invention, the content of the bonded phenol in the litchi pomace can be remarkably increased, the obtained litchi fruit powder product is good in color and luster, the increase of the content of the bonded phenol in the litchi is effectively promoted, the antioxidant function of the bonded phenol in the litchi is remarkably improved so as to improve the nutritional function of the litchi pomace powder, and the drying process has commercial value in functional food development and utilization.

Description

technical field [0001] The invention belongs to the technical field of food, and in particular relates to an intermittent drying process for improving the binding phenol of litchi pomace and its application. Background technique [0002] Litchi is a characteristic fruit in South China. It is bright red when ripe, and is loved by people for its delicious taste. Traditional Chinese medicine believes that lychee pulp has the effects of strengthening the spleen, benefiting the liver, and beautifying the face. According to reports, polyphenols in lychee have various health benefits such as anti-oxidation, lowering blood sugar, lowering blood fat, protecting the liver, regulating immunity, and promoting the activity of colonic microorganisms. They have broad prospects in the development of functional foods and medicinal value. my country is a major producer of lychees. In 2020, the total area of ​​lychee production in the country is about 540,300 hectares, and the total output is...

Claims

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Application Information

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IPC IPC(8): A23L19/00A23L33/00A23L5/30F26B3/30F26B23/00
CPCA23L19/09A23L33/00A23L5/30F26B3/30F26B23/00A23V2002/00A23V2200/30A23V2300/10Y02P60/85
Inventor 苏东晓万梦喜熊雄曾庆祝
Owner GUANGZHOU UNIVERSITY
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