To provide a freshness retaining method by which can suppress moisture loss of greengrocery and retain freshness of greengrocery for an extended period, and to provide a freshness retainer.SOLUTION: The freshness retaining method of greengrocery is a method for storing, in pseudo-microgravity, parts for having vessels of greengrocery. By storing the parts for having vessels of greengrocery in pseudo-microgravity, moisture loss of greengrocery is suppressed, with freshness of greengrocery retained for an extended period.SELECTED DRAWING: Figure 7
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