Patents Assigned to Margaret Louise Carstairs
  • Patent number: 5677019
    Abstract: The invention provides a method of making preserved plant material having the color and texture of fresh plant material and substantially free from curling or distortion, the method comprising the step of immersing the plant material in an aqueous solution comprising from 40% to 95% by weight of one or more C.sub.3 -C.sub.6 dihydric alcohols at a temperature of from 60.degree. C. to 95.degree. C. The dihydric alcohols preferably comprise a major fraction of propylene glycol. The immersion is preferably carried out for from 5 to 90 minutes at a temperature of from 65.degree. to 85.degree. C. The aqueous solution may also contain dehydrating alcohols and/or polyethylene glycol. The aqueous solution of the dihydric alcohols exchanges for aqueous sap and juices in the plant material, e.g. cut green foliage or cut flowers, without changing the color or texture of the material.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: October 14, 1997
    Assignee: Margaret Louise Carstairs
    Inventors: Margaret Louise Carstairs, Lawrence Jennings