The macadamia nut (Macadamia integrifolia and
M. tetraphylla) is one of the world’s finest dessert
nuts. The macadamia nut is comprised of the husk
(the green outer covering of the nut), shell, and
nut kernel (fig. 1). The shell contains approximately 2.8%
oil and the hull consists of 14% substances suitable for
tanning leather (Pope, 1929). The edible kernel containing
between 70% and 75% fat, may be eaten either raw or
roasted, and used in cakes, confectionery, and ice cream.
Since being introduced into Hawaii in 1882, the
macadamia nut has become the most important tree crop in
the state. Its production has expanded at a rate exceeding
any other important crop in Hawaii (Pope, 1929; Cross,
1955; Hamilton and Fukunaga, 1959). The current
production in Hawaii is 27 million tons with a farm value
of $35 million (Anon., 1999).
Macadamia nuts fall from the tree after reaching
maturity or being mechanically harvested by shakers and
are picked up from the ground either by hand or
mechanically. The green husks are removed by various
mechanical means and the husked nuts then go through a
series of drying operations.
The macadamia nut (Macadamia integrifolia andM. tetraphylla) is one of the world’s finest dessertnuts. The macadamia nut is comprised of the husk(the green outer covering of the nut), shell, andnut kernel (fig. 1). The shell contains approximately 2.8%oil and the hull consists of 14% substances suitable fortanning leather (Pope, 1929). The edible kernel containingbetween 70% and 75% fat, may be eaten either raw orroasted, and used in cakes, confectionery, and ice cream.Since being introduced into Hawaii in 1882, themacadamia nut has become the most important tree crop inthe state. Its production has expanded at a rate exceedingany other important crop in Hawaii (Pope, 1929; Cross,1955; Hamilton and Fukunaga, 1959). The currentproduction in Hawaii is 27 million tons with a farm valueof $35 million (Anon., 1999).Macadamia nuts fall from the tree after reachingmaturity or being mechanically harvested by shakers andare picked up from the ground either by hand ormechanically. The green husks are removed by variousmechanical means and the husked nuts then go through aseries of drying operations.
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