Liquid nitrogen fresh-keeping process

The invention provides a liquid nitrogen fresh-keeping process, and relates to the technical field of food fresh-keeping. The liquid nitrogen fresh-keeping process comprises the following steps of: putting food into an ultralow-temperature cooking basin, mounting a spraying pipe of a liquid nitrogen...

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Bibliographische Detailangaben
1. Verfasser:	CHEN YONGQIAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Beschreibung
Zusammenfassung:	The invention provides a liquid nitrogen fresh-keeping process, and relates to the technical field of food fresh-keeping. The liquid nitrogen fresh-keeping process comprises the following steps of: putting food into an ultralow-temperature cooking basin, mounting a spraying pipe of a liquid nitrogen spraying machine above the ultralow-temperature cooking basin, spraying liquid nitrogen into the ultralow-temperature cooking basin, enabling the liquid nitrogen to completely soak the food in the ultralow-temperature cooking basin, and enabling frozen objects to pass through a maximum ice crystalgeneration area in an extremely short time at an ultralow temperature of -35 to -85 DEG C, so as to realize quick-freezing fresh-keeping. According to the liquid nitrogen fresh-keeping process provided by the invention, original nutritional ingredients of the food are hardly lost, the quality of the food is consistent with that of original fresh food, and the liquid nitrogen fresh-keeping processis used for fresh-keeping