Actinidia arguta Sieb.et Zucc. freeze-dried powder and standard thereof
The invention relates to the field of fruit processing and discloses Actinidia arguta Sieb.et Zucc. freeze-dried powder and a standard thereof. A pre-cooling process comprises putting a device with Actinidia arguta Sieb.et Zucc. paste into a refrigerating chamber, carrying out pre-freezing at a pre-...
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Zusammenfassung: | The invention relates to the field of fruit processing and discloses Actinidia arguta Sieb.et Zucc. freeze-dried powder and a standard thereof. A pre-cooling process comprises putting a device with Actinidia arguta Sieb.et Zucc. paste into a refrigerating chamber, carrying out pre-freezing at a pre-freezing temperature of -35 DEG C for 10h until the core temperature of the Actinidia arguta Sieb.et Zucc. paste is -40 DEG C, and keeping the temperature for 2-6h so that the pre-cooling process is finished. A vacuum freeze-drying process comprises feeding the pre-frozen Actinidia arguta Sieb.et Zucc. paste into a drying cabin, starting a vacuum pump, keeping vacuum pressure of 1-20pa, slowly heating the Actinidia arguta Sieb.et Zucc. paste to -30 DEG C at a heating rate of 1 DEG C/h, keeping the temperature for 12h, slowly heating the Actinidia arguta Sieb.et Zucc. paste to -5 DEG C at a heating rate of 2 DEG C/h, keeping the temperature for 8h so that a first drying stage is finished, on the premise of enzyme activity guarantee, slowly heating the Actinidia arguta Sieb.et Zucc. paste to 40 DEG C at a heating rate of 3 DEG C/h, keeping the temperature for 8h and taking the Actinidia arguta Sieb.et Zucc. paste out of the cabin. The Actinidia arguta Sieb.et Zucc. freeze-dried powder has small nutrition loss and good fruit powder processing effects and is suitable for being eaten in different seasons. The Actinidia arguta Sieb.et Zucc. freeze-dried powder has scientific and reasonable quality indexes and gets the guarantee. |
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