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Drying and processing method of red date

A processing method and technology for jujubes, which are applied in heating preservation of fruits/vegetables, food preservation, fresh fruit and vegetable preservation, etc., can solve the problems of high labor intensity, long drying time, low thermal efficiency, etc. High-quality, fast-drying results

Inactive Publication Date: 2010-04-14
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drying in the drying room refers to setting up masonry flues on the floor of the drying room with brick-wood and brick-concrete structures, and the furnace is built outside the drying room, or the cave is slightly modified, and then the material rack and tray are placed, so that the materials are easy to obtain. The investment is small, but due to the small heat transfer capacity of the masonry flue, most of the heat energy is discharged with the flue gas, and the thermal efficiency is very low, which makes the drying time long, generally takes about 2 days, and because the drying room cannot accurately control the drying temperature and is everywhere Heating is uneven and requires frequent reversing; while kang drying is not only labor-intensive and energy utilization is low, but also the dried jujube has uneven moisture content, wrinkled shape, dark red color, and some jujubes have a serious burnt smell.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The steps of a drying processing method for red dates are as follows: ①fresh red dates that have just been picked; The head dates and immature tender green dates are sorted out, and then the fresh red dates that have been cleaned and sorted are washed with tap water to remove surface soil and debris; ③Use high-temperature, high-speed superheated steam for anhydrous blanching to kill enzymes and sterilize The blanching temperature is 110°C, the relative humidity of the superheated steam is 35%, the speed of the superheated steam is 9m / s, and the blanching time is 120s; ④The jujube after the blanching, enzyme and sterilization treatment is subjected to drum vacuum pulsation drying , the drying process parameters are 5rpm rotating speed, 50°C drying temperature, pulsating drying chamber vacuum degree between 0 and 0.092Mpa, the drying time is 2 minutes when the vacuum degree is 0 within a pulsation cycle, and the drying chamber vacuum degree is The drying time of 0.092Mpa ...

Embodiment 2

[0023]A drying processing method of red dates is as follows: ①fresh red dates that have just been picked; The head dates and immature tender green dates are sorted out, and then the fresh red dates that have been cleaned and sorted are washed with tap water to remove surface soil and debris; ③ After cleaning, sorting and cleaning, the red dates are graded according to size And use a pitting machine to remove the pits; ④Use high-temperature, high-speed superheated steam for anhydrous blanching to kill enzymes and sterilize. The blanching temperature is 125°C, the relative humidity of superheated steam is 30%, and the speed of superheated steam is 12m / s , The blanching time is 110s; ⑤ Carry out drum vacuum pulsation drying to the jujube after the blanching, enzyme and sterilization treatment, the drying process parameters are as follows: the speed is 10rpm, the drying temperature is 60°C, and the vacuum degree of the drying chamber is between 0 and 0.092Mpa Pulsation, the drying...

Embodiment 3

[0025] A drying processing method of red dates is as follows: ①fresh red dates that have just been picked; The head dates and immature tender green dates are sorted out, and then the fresh red dates that have been cleaned and sorted are washed with tap water to remove surface soil and debris; ③Use high-temperature, high-speed superheated steam for anhydrous blanching to kill enzymes and sterilize The blanching temperature is 140°C, the relative humidity of the superheated steam is 25%, the speed of the superheated steam is 15m / s, and the blanching time is 90s; ④The jujubes after the blanching, enzyme and sterilization treatment are subjected to drum vacuum pulsation drying , the drying process parameters are 15rpm rotating speed, 65°C drying temperature, pulsating drying chamber vacuum degree between 0 and 0.090Mpa, the drying time is 5 minutes when the vacuum degree is 0 within a pulsation cycle, and the drying chamber vacuum degree is The drying time of 0.090Mpa is 25 minute...

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Abstract

The invention relates to a drying and processing method of red date, which belongs to the technical field of agricultural product processing. The invention aims at supplying a drying and processing method of red date for processing red date in short time and big batches in harvesting season, improving processing technology, shortening drying time, improving quality and improving the sanitary condition of red date treatment. The drying and processing method of red data comprises taking fresh red date, removing impurities, sorting, cleaning, blanching, sterilizing, drying, cooling and packaging.

Description

technical field [0001] The invention relates to a method for drying and processing red dates, belonging to the technical field of agricultural product processing. Background technique [0002] Jujube is the fruit of the plant Jujube in Rhamnaceae, which is native to my country and has high economic value. my country is the main producer of jujube in the world, accounting for 90% of the world's total output and 98% of the international trade volume. Jujube, as a fruit of "medicine and food from the same source", has always been regarded as "top-grade nourishing". "Qi Min Yao Shu" listed the nutritional value of jujube as the first of 42 kinds of fruits. "Shen Nong's Materia Medica" and "Compendium of Materia Medica" have records of its medical value. Thrift can save money, and suffering can be prepared for medicine, supplementary food to support the people's livelihood", "dried jujube nourishes the heart and lungs, relieves cough, nourishes the five internal organs, cures d...

Claims

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Application Information

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IPC IPC(8): A23B7/028A23B7/005
Inventor 高振江肖红伟娄正杜志龙姚雪东林海
Owner CHINA AGRI UNIV