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A technology of vacuum freeze-drying and processing method, applied in the direction of drying solid materials, drying solid materials without heating, drying, etc., can solve the problems of mildew, poor quality, easy saccharification, etc. The effect of low moisture content
Inactive Publication Date: 2012-06-27
重庆市秀山红星中药材开发有限公司
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However, because asparagus contains a lot of sugar, products processed by traditional sun-dried and high-temperature drying methods are prone to saccharification, discoloration, and poor quality. The processed asparagus products still have a water content of 10-14%. Mildew may occur
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example 1
[0016] Harvest 100kg of asparagus, remove debris and moldy parts of pests, select roots with a diameter of more than 1.3cm, and cut off the fibrous roots at both ends of each root from the bottom; then wash with running water, put all the roots of asparagus in water, and put them up and down. Shake and rinse repeatedly until the soil on the tubers is completely removed, and then grade them according to the diameter of 1.3-1.5cm, 1.5-1.8cm, and 1.8cm or more.
[0017] Boil clean water, then pour the washed asparagus roots into a boiling water pot and cook for 15 minutes on medium heat, until the skin is cracked and the heart is penetrated; then peel off the outer skin while it is hot, and remove it by hand Tear off one end of the root tuber to the other end, peel off completely, and then use 1% CaCl 2 Soak in solution for 15 minutes. Put the soaked asparagus into a vacuum freezer. The initial temperature in the freezer is 0°C~-5°C, and then it will drop to -25°C~-30°C within 1...
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Abstract
An asparagus tuber vacuum freeze-drying processing method comprises six steps of cutting roots and removing impurities, washing roots and grading, boiling in boiling water, peeling and immersing, and carrying out vacuum freeze-drying and vacuum packaging. The invention has the following beneficial effects: the boiling time is limited within 14-16 minutes to guarantee peeling of asparagus tuber and simultaneously not to damage contents of effective substances in asparagus tuber; after peeling, 1% of a CaCL2 solution is used to immerse asparagus tuber so as to raise hardness of dried asparagus tuber and avoid saccharification; vacuum freeze-drying can accelerate the drying speed, enhance the drying effect, lower moisture content and keep asparagus tuber fresh; and after processed, the asparagus tuber product has excellent quality, is yellow white, is crispy, hard and transparent, and has no white core and no saccharification.
Description
technical field [0001] The invention belongs to a processing method of pure natural medicine, in particular to a processing method of vacuum freeze-drying asparagus. Background technique [0002] Asparagus cochinchinensis (Lour.) Merr., also known as asparagus, is an evergreen vine of Liliaceae, and its roots are used as medicine. It is mainly produced in Guizhou, Guangxi, Yunnan, Gansu, Anhui, Henan, Hunan, Hubei, Sichuan and Jiangxi. Asparagus was first recorded in "Shen Nong's Materia Medica", and it has been recorded in successive dynasties of herbal medicines. It is sweet, bitter, cold in nature, belongs to the lung and kidney meridian, can nourish yin and moisten dryness, clear lung and generate body fluid; it is mainly used for dry cough due to dryness of the lung, cough due to consumptive fatigue, thirsty body wound, insomnia due to complex heart, internal heat and thirst, constipation due to dryness of the intestine, etc. disease. It can also treat dry throat and...
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