Tangerine fruit cv. Sai Nam Phueng were harvested at commercial maturity
from a commercial orchard in Fang District, Chiang Mai Province, Thailand, in
February 2008. Fruit were sized immediately after harvesting using a dimension
sizer. Fruit were selected for a weight range of about 92-98 g (No. 4) and
134-142 g (No. 6) as well as uniform maturity, shape, color and lack of defects.
Tangerines were washed with water and rotated on a soft brush. Fruit surfaces
were dried by warm air (45°C) before coating by Zivdar (Safepack Products Ltd.,
Israel) or Fomesa (Fomesa Fruitech, S.L., Spain), then dried again by warm air
(40°C). Non-coated fruit were used as a control. Tangerine fruit were packed
into cartons and transported by truck (~3 hours) to the Postharvest Horticultural
Laboratory, Department of Plant Science and Natural Resources, Faculty of
Agriculture, Chiang Mai University. The study consisted of a factorial design with
two fruit sizes and two types of coating