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Intermediate wave infrared drying method combined with ultrasonic pretreatment for conditioning glial aquatic product

A technology of ultrasonic pretreatment and short-wave infrared, which is applied in the direction of dry preservation of meat/fish, food preservation, food processing, etc., to achieve rapid dehydration, improve the effect of drying processing and consumption

Active Publication Date: 2013-03-27
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] From these studies, it can be found that there are very few reports on the combination of ultrasound and short-wave infrared-hot air integrated drying of colloidal aquatic products. Therefore, this study provides a technical solution for the production of high-quality dehydrated colloidal aquatic products.

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  • Intermediate wave infrared drying method combined with ultrasonic pretreatment for conditioning glial aquatic product

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Embodiment 1

[0020] Example 1: A method of conditioning kelp with medium-short-wave infrared drying combined with ultrasonic pretreatment

[0021] Fresh kelp is washed and cut into 8×4cm kelp strips, and the above-mentioned kelp strips are processed in an ultrasonic processor (20KHz) in a pulse mode (opening and closing ratio=5s:5s) according to a solid-liquid ratio of 1:8 For 5 min, the treatment medium contained 0.5% tea polyphenol extract. The medium-short-wave infrared-hot air integrated drying equipment equipped with 6 medium-short-wave infrared heating tubes (wavelength between 2.4-3um) is used for dehydration. The raw materials subjected to ultrasonic treatment are dried in the above-mentioned equipment for 4.2 hours, and the drying temperature is controlled at 50. -60°C, the wind speed is 0.8-1.0m / s. The dry color difference (ΔE) of the obtained kelp is between 10-15, the ability to scavenge DPPH free radicals reaches 85%, the percentage of dry shrinkage is 75%-80%, the rehydratio...

Embodiment 2

[0022] Example 2: A method of short-wave infrared drying in conditioning squid combined with ultrasonic pretreatment

[0023] Wash the chilled squid, peel off the skin, remove the viscera and cut it into 8×4cm squid strips. Sliced ​​squid was processed in an ultrasonic processor (20KHz) in a pulse mode (on-off ratio = 5s:5s) for 15 minutes at a solid-to-liquid ratio of 1:8. For conditioning, 1.0% licorice was added to the liquid medium Extract. Dehydration is carried out by a combination drying equipment with medium-short-wave infrared and hot air installed with 6 medium-short-wave infrared heating tubes (wavelength between 2.4-3um). The raw materials subjected to ultrasonic treatment are dried in the above-mentioned equipment for 5.5 hours, the drying temperature is controlled at 50-60° C., and the wind speed is 0.8-1.0 m / s. The dry color difference (ΔE) of the obtained squid is between 33-35, the scavenging ability for DPPH free radicals reaches 89%, the volatile base ...

Embodiment 3

[0024] Example 3: A method for drying medium-short-wave infrared in conditioning soft-shelled turtle colloid components combined with ultrasonic pretreatment

[0025] After the soft-shelled turtle has been slaughtered, cleaned, peeled, gutted and cleaned, the soft-shelled soft-shelled soft-shelled soft-shelled soft-shelled soft-shelled soft-shelled turtle must be cut off, the tips of the four claws and the tail sheath should be cut off, the butter attached to the four feet should be removed, and cut into 5×5cm pieces of soft-shelled soft-shelled soft-shelled turtle. In an ultrasonic processor (20KHz) for 20 minutes in a pulse mode (on / off ratio = 5s:5s) at a solid-to-liquid ratio of 1:8, for conditioning treatment, 1.0% licorice extract was added to the liquid medium. Dehydration is carried out by using a combined short-wave infrared-hot air combined drying equipment equipped with 6 medium-short-wave infrared heating tubes (wavelength between 2.4-3 μm). The raw material subjec...

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Abstract

The invention relates to an intermediate wave infrared drying method combined with ultrasonic pretreatment for conditioning a glial aquatic product, and belongs to the field of aquatic product processing technology. The method comprises the steps of conditioning and treating high moisture glial aquatic product which is sliced into sheets or slit into strips for 5-20 minutes by a pulse mode with an open-closed ratio of 5 s : 5 s, in an ultrasonic processor (20 KHz) according to a solid-liquid ratio of 1 : 8; and rapidly dehydrating for 3-6 hours at the temperature of 50-60 DEG C and with wind speed of 0.8-1 m / s under the control of an accurate wavelength of 2.4-3 [mu]m in an intermediate wave infrared-hot wind integrated combination drying apparatus, so that a high quality dried conditioning glial aquatic product which has good maintained color and structure, rapid rehydration speed, good reconstitution capacity, uniform quality, low salt content and high good commodity value is obtained. The method provides an energy-saving and quality-guarantying novel drying technology for drying the glial aquatic product.

Description

technical field [0001] A short-wave infrared drying method for conditioning colloidal aquatic products combined with ultrasonic pretreatment. The invention relates to dried food processing and belongs to the technical field of aquatic product processing. Background technique [0002] Colloidal aquatic products are delicious and have always been people's favorite delicacies. It is not only rich in nutrition, but also a good nourishing product. It has therapeutic effects and is an ideal health food. Dehydration processing is a traditional method of colloidal aquatic food processing and preservation. Usually hot air or natural drying at lower temperature is the most common method. Hot air drying has slow heat and mass transfer speed, long drying time and high energy consumption; natural drying products are prone to various pollutions and are greatly affected by weather. Quality is difficult to control. During the drying process of colloidal aquatic products, the hard shell f...

Claims

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Application Information

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IPC IPC(8): A23B4/03A23L3/40A23L3/54
CPCY02P60/85
Inventor 张慜王应强王拥军徐丰民张卫明
Owner JIANGNAN UNIV
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