A method for separating solid kiwifruit seed meat at low temperature

Abstract

The invention discloses a method for separating solid kiwi fruit pulp at low temperature. The kiwi fruit is selected, sterilized and cleaned, manually or mechanically peeled, and the peeled pulp is cut into kiwi fruit slices with a thickness of 0.5 to 1 cm. The temperature is -25°C to Vacuum at ‑35°C to freeze the kiwifruit slices quickly, supplement the heat with radiation heating, and dry the kiwifruit slices below 40°C to a water content below 2%; the dried kiwifruit slices are crushed, and the pulp with light specific gravity is extracted by an air pump in a closed space The kiwi fruit powder falls into the kiwi fruit powder filter bag under the action of air-conditioning pressurized purge and disturbed air flow, and the kiwi fruit seeds with heavy specific gravity fall into the kiwi fruit seed storage barrel, and the air circulates in the closed space through the filter bag. The invention can effectively avoid the problems that the traditional kiwi fruit pulp separation method easily causes the loss of pulp nutrients, the separation of the pulp is difficult, a large amount of processing water is discharged during the processing process, and the problems of energy saving and emission reduction are not achieved.

Description

technical field [0001] The invention belongs to the field of food production, in particular to a method for separating solid kiwifruit seed meat at low temperature. Background technique [0002] The content of α-linolenic acid in kiwi seed oil is as high as 61.82%, which is twice the content of omega-3 fatty acids in fish oil. It is a good fish oil substitute. However, kiwifruit seeds are small, shaped like sesame seeds, and brown in color. Each fruit contains as few as 600-1200 seeds, with an average of about 900 seeds. The weight of 1,000 seeds is 1.2-1.3 grams, and each kilogram of fruit contains about 33-46 grams of dried seeds. For example, the annual output of kiwifruit in the country is 2.5 million tons, with more than 87,000 tons of seeds. These seeds are indigestible in the slices and affect the quality of the slices. And after separation, oil extraction is worth a lot. Existing separation technology has not been formed, and it just falls off automatically durin...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-temperature kiwifruit solid seed meat separation method, which aims to solve the problem that the kiwifruit seed meat separation method is easy to cause the loss of pulp nutrients, the separation of seed flesh is difficult, and a large amount of processing water is discharged during the processing process, which does not save energy and reduce emissions.

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