HARVEST SEASON CHANGES THE TEXTURAL AND COMPOSITIONAL QUALITY OFLONG-TERM HARVESTED GREEN ASPARAGUS FROM MOTHER STALK CULTURE

摘要

Excessive fiber is an undesirable textural quality in asparagus that can make this plant material unacceptable as a food (Clore et al., 1976). The texture of asparagus is determined largely by its fiber content and the degree of lignification of these fibers. Fiber content refers to the quantitatively determined proportion of fiber in a given quantity of spears. The shear press has been used to measure fiber content in asparagus and results have correlated very well with organoleptical evaluations (Sharma and Wolf, 1975). Temperature during growth has a great influence on the textural quality of harvested asparagus spears. A preliminary study showed that fiber content in spears of 'Mary Washington' asparagus was less when grown at 21.1℃ to 26.6℃ than when grown at 10.0℃ to 15.5℃ (Sosa-Coronell et al, 1976).