Method for raising rehydration performance of far-infrared dried agaricus bisporus by ultrasonic pretreatment

A technology of far-infrared drying and rehydration performance, which is applied in the direction of dry preservation of eggs, etc., can solve the problem of lack and other problems, and achieve the effect of fast rehydration speed, favorable rehydration ratio and rehydration performance, and superior rehydration performance

Active Publication Date: 2015-09-30
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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Problems solved by technology

However, the current research on ultrasonic in the field of drying is mainly limited to how to improve the drying efficiency. There is still a lack of research on th

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  • Method for raising rehydration performance of far-infrared dried agaricus bisporus by ultrasonic pretreatment
  • Method for raising rehydration performance of far-infrared dried agaricus bisporus by ultrasonic pretreatment
  • Method for raising rehydration performance of far-infrared dried agaricus bisporus by ultrasonic pretreatment

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Embodiment

[0024] Commercially purchased fresh Agaricus bisporus with uniform size, cleaned and removed the stalk, and cut into 5mm thin slices longitudinally (along the growth direction). Under normal temperature conditions, the cut Agaricus bisporus slices were put into a digitally controlled ultrasonic cleaner for pretreatment, with a material-to-liquid ratio of 1:4, an ultrasonic frequency of 40kHz, and a power density of 0.367W / cm 2 , The ultrasonic treatment time is 10 minutes, the intermittent time is 3 minutes, and the intermittent frequency is 3 times. After ultrasonic treatment, drain the surface moisture of Agaricus bisporus slices, and then place them in far-infrared drying equipment for drying, with a radiation distance of 150mm and a radiation intensity of 2.1KW / m 2 , so that the water content of Agaricus bisporus is below 5%. The dried Agaricus bisporus slices are filled with nitrogen and packed in a well-sealed aluminum-plastic bag, and stored in a dry place at room temp...

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Abstract

The invention relates to a method for raising rehydration performance of far-infrared dried agaricus bisporus by ultrasonic pretreatment and belongs to the field of agricultural products deep processing. The method comprises the following steps: choosing fresh and equally-sized agaricus bisporus, cleaning and removing agaricus bisporus stems, vertically slicing, and carrying out intermittent ultrasonic pretreatment with ultrasonic pretreatment frequency being 20-40 kHz, power density being 0.2-0.5 W/cm<2>, ultrasonic pretreatment time being 3-10 min, intermittent time being 2-5 min and intermittent number of times being 2-6 times; and draining off moisture on the surface of the agaricus bisporus slices which have undergone ultrasonic pretreatment, placing the agaricus bisporus slices in far-infrared drying equipment with radiation distance being 100-200mm and radiation intensity being 1.6-2.9 KW/m<2> and drying until water content of the agaricus bisporus is lower than 5%. By the intermittent ultrasonic pretreatment, internal cells of the agaricus bisporus form micro-channels which are beneficial to enhance rehydration performance of the dehydrated agaricus bisporus slices after drying. Rehydration performance of the dehydrated agaricus bisporus slices which have undergone intermittent ultrasonic pretreatment is raised by 15-22% in comparison with rehydration performance of untreated agaricus bisporus slices. Rehydration performance is enhanced remarkably, and nutritional ingredients are retained effectively.

Description

technical field [0001] The invention relates to a method for improving the rehydration performance of far-infrared dried Agaricus bisporus through ultrasonic pretreatment, and belongs to the field of deep processing of agricultural products. Background technique [0002] Agaricus bisporus belongs to Basidiomycotina, Agaricaceae, Agaricaceae, and mushroom genus. It is native to France. Artificial cultivation in my country began in 1935. At present, it is mainly produced in Anhui, Shandong, Hebei, Henan and other places. Agaricus bisporus is rich in vitamins B1, B2, niacin and other vitamins, minerals, polyphenols and polysaccharides and other nutrients, which can regulate human metabolism and have significant curative effects on the prevention and treatment of chronic diseases such as hypertension, coronary heart disease and cancer. But Agaricus bisporus is not resistant to preservation, and its freshness decreases rapidly after harvesting, and it is prone to phenomena such a...

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Application Information

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IPC IPC(8): A23B5/02
Inventor 张钟元刘宗博李大婧刘春泉江宁
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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