Method for processing canned white asparagus by vacuum acidification
A technology of canned asparagus and a processing method, which is applied in heating preservation of fruits/vegetables, food preservation, fresh-keeping of fruits and vegetables, etc., can solve the problems of slow cooling speed, soft and rotten bamboo shoots, affecting the color of white asparagus, etc.
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[0032] Example 1
[0033] (1) Material selection and trimming: The stem length of the raw material is required to be 12-16cm, and the thickness should be the average horizontal diameter of the stem is 1~3.8cm. It must be fresh and good, free of sediment, hollow, cracked, deformed, pest hazards, rust spots and lost raw materials. From the top of the shoot tip to the root direction, peel off the thick old skin, coarse fibers and corners, trim off the cracks and moth-eaten parts, and then carefully remove the scales on the shoot tip. Cut the whole asparagus into 10.5~11cm strips with bamboo tips.
[0034] (2) Ultrasonic cleaning: Put the trimmed white asparagus in an ultrasonic cleaner, and clean it for 10 minutes under 26kHz, 0.32W·cm-2 ultrasonic cleaning conditions.
[0035] (3) Pre-cooking: take the method of pre-cooking in sections, with the tip of the bamboo shoot up and the base down. Put the 2 / 3 near the base into the water and cook for 2 to 3 minutes, and then boil the tip of...
Example Embodiment
[0043] Example 2
[0044] (1) Material selection and trimming: The stem length of the raw material is required to be 12-16cm, and the thickness should be the average horizontal diameter of the stem is 1~3.8cm. It must be fresh and good, free of silt, no hollows, cracks, deformities, pest damage, rust spots and lost raw materials. From the top of the shoot tip to the root direction, peel off the thick old skin, coarse fiber and corners, trim off the cracks and moth-eaten parts, and then carefully remove the scales on the shoot tip. Cut the whole asparagus into 10.5~11cm strips with bamboo tips.
[0045] (2) Ultrasonic cleaning: Put the trimmed white asparagus in an ultrasonic cleaner, and clean it for 11 minutes under 30kHz, 0.30W·cm-2 ultrasonic cleaning conditions.
[0046] (3) Pre-cooking: take the method of pre-cooking in sections, with the shoot tip upward and the base down, first put 2 / 3 near the base into water and boil for 2 to 3 minutes, and then boil the shoot tip part in ...
Example Embodiment
[0054] Example 3
[0055] (1) Material selection and trimming: The stem length of the raw material is required to be 12-16cm, and the thickness should be 1 to 3.8cm on average. It must be fresh and good, free of silt, no hollows, cracks, deformities, pest damage, rust spots and lost raw materials. From the top of the shoot tip to the root direction, peel off the thick old skin, coarse fibers and corners, trim off the cracks and moth-eaten parts, and then carefully remove the scales on the shoot tip. Cut the whole asparagus into 10.5~11cm strips with bamboo tips.
[0056] (2) Ultrasonic cleaning: Put the trimmed white asparagus in an ultrasonic cleaner, and clean for 12 minutes under the conditions of 25kHz, 0.40W·cm-2 ultrasonic cleaning.
[0057] (3) Pre-cooking: take the method of pre-cooking in sections, with the tip of the bamboo shoot up and the base down. Put the 2 / 3 near the base into the water and cook for 2 to 3 minutes, and then boil the tip of the bamboo shoot for about ...
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